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SFS Models
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- SFS Models
Features of SFS Models
These couplings have disc springs that use steel for the body. They are the basic type of SERVO FLEX. Single-element types with high torsional stiffness, flexible double-element types that separate double elements with a spacer, and floating shaft types that combine double elements with intermediate flanges are available.
Wide line-up
Both SFS S single-element types with high torsional stiffness, flexible SFS W double-element types that separate double elements with a spacer, and SFS G types that support even longer distances between shafts are available.
Electroless nickel plating also available
Products finished with electroless nickel plating as the surface treatment may be selected for pilot bore couplings and key/set screw couplings.
High-precision mounting
The SFS S/W/G-[ ] M- [ ] M types use friction couplings. They are designed to have the sleeve inserted inside the flange, so they can be mounted very precisely, using the outer diameter of the sleeve as a guide.
Can be assembled from part components
Since we deliver products as components, you can safely use them even in designs that cannot be mounted once assembled. Products can also be shipped pre-assembled, upon request. And since the flanges have interchangeable mounting dimensions, you can order products that have a pilot-bore coupling on the flange of only one side, combined with key/set screw type flanges and high-precision friction coupled flanges.
SFS Models Specifications
SFS-□S Types
[Specifications]
| Model | Rated torque［N・m］ | Misalignment | Max. rotation speed［min-1］ | Torsional stiffness［N・m/rad］ | Axial stiffness［N/mm］ | Moment of inertia［kg・m2］ | Mass［kg］ | |
|---|---|---|---|---|---|---|---|---|
| Angular［°］ | Axial［mm］ | |||||||
| SFS-05S | 20 | 1 | ±0.6 | 25000 | 16000 | 43 | 0.11×10-3 | 0.30 |
| SFS-06S | 40 | 1 | ±0.8 | 20000 | 29000 | 45 | 0.30×10-3 | 0.50 |
| SFS-08S | 80 | 1 | ±1.0 | 17000 | 83000 | 60 | 0.87×10-3 | 1.00 |
| SFS-09S | 180 | 1 | ±1.2 | 15000 | 170000 | 122 | 1.60×10-3 | 1.40 |
| SFS-10S | 250 | 1 | ±1.4 | 13000 | 250000 | 160 | 2.60×10-3 | 2.10 |
| SFS-12S | 450 | 1 | ±1.6 | 11000 | 430000 | 197 | 6.50×10-3 | 3.40 |
| SFS-14S | 800 | 1 | ±1.8 | 9500 | 780000 | 313 | 9.90×10-3 | 4.90 |
*Max. rotation speed does not take into account dynamic balance.
*The moment of inertia and mass are measured for the maximum bore diameter.
[Dimensions]
Unit [mm]
| Model | d1・d2 | D | N | L | LF | S | F | K | M | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pilot bore | Min. | Max. | |||||||||
| SFS-05S | 7 | 8 | 20 | 56 | 32 | 45 | 20 | 5 | 11 | 24 | 4-M5×22 |
| SFS-06S | 7 | 8 | 25 | 68 | 40 | 56 | 25 | 6 | 10 | 30 | 4-M6×25 |
| SFS-08S | 10 | 11 | 35 | 82 | 54 | 66 | 30 | 6 | 11 | 38 | 4-M6×29 |
| SFS-09S | 10 | 11 | 38 | 94 | 58 | 68 | 30 | 8 | 21 | 42 | 4-M8×36 |
| SFS-10S | 15 | 16 | 42 | 104 | 68 | 80 | 35 | 10 | 16 | 48 | 4-M8×36 |
| SFS-12S | 18 | 19 | 50 | 126 | 78 | 91 | 40 | 11 | 23 | 54 | 4-M10×45 |
| SFS-14S | 20 | 22 | 60 | 144 | 88 | 102 | 45 | 12 | 31 | 61 | 4-M12×54 |
*Pilot bores are to be drilled into the part.
*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.
[Standard bore diameter]
| Model | Standard bore diameter d1・d2 [mm] | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 9 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 56 | 60 | |
| SFS-05S | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||
| SFS-06S | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-08S | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
| SFS-09S | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||
| SFS-10S | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-12S | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-14S | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.
【Standard Hole-Drilling Standards】
Unit [mm]
| Models compliant with the old JIS standard (class 2) JIS B 1301 1959 | Models compliant with the new JIS standard (H9) JIS B 1301 1996 | Models compliant with the new JIS standard (JS9) JIS B 1301 1996 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7,H8 | ToleranceE9 | － | － | ToleranceH7,H8 | ToleranceH9 | － | － | ToleranceH7,H8 | ToleranceJS9 | － | － | |||
| 8 | 8+0.0220 | － | － | 2-M4 | 8H | 8+0.0220 | 3+0.0250 | 9.4+0.30 | 2-M4 | 8J | 8+0.0220 | 3±0.0125 | 9.4+0.30 | 2-M4 |
| 9 | 9+0.0220 | － | － | 2-M4 | 9H | 9+0.0220 | 3+0.0250 | 10.4+0.30 | 2-M4 | 9J | 9+0.0220 | 3±0.0125 | 10.4+0.30 | 2-M4 |
| 10 | 10+0.0220 | － | － | 2-M4 | 10H | 10+0.0220 | 3+0.0250 | 11.4+0.30 | 2-M4 | 10J | 10+0.0220 | 3±0.0125 | 11.4+0.30 | 2-M4 |
| 11 | 11+0.0180 | － | － | 2-M4 | 11H | 11+0.0180 | 4+0.0300 | 12.8+0.30 | 2-M4 | 11J | 11+0.0180 | 4±0.0150 | 12.8+0.30 | 2-M4 |
| 12 | 12+0.0180 | 4+0.050+0.020 | 13.5+0.30 | 2-M4 | 12H | 12+0.0180 | 4+0.0300 | 13.8+0.30 | 2-M4 | 12J | 12+0.0180 | 4±0.0150 | 13.8+0.30 | 2-M4 |
| 14 | 14+0.0180 | 5+0.050+0.020 | 16+0.30 | 2-M4 | 14H | 14+0.0180 | 5+0.0300 | 16.3+0.30 | 2-M4 | 14J | 14+0.0180 | 5±0.0150 | 16.3+0.30 | 2-M4 |
| 15 | 15+0.0180 | 5+0.050+0.020 | 17+0.30 | 2-M4 | 15H | 15+0.0180 | 5+0.0300 | 17.3+0.30 | 2-M4 | 15J | 15+0.0180 | 5±0.0150 | 17.3+0.30 | 2-M4 |
| 16 | 16+0.0180 | 5+0.050+0.020 | 18+0.30 | 2-M4 | 16H | 16+0.0180 | 5+0.0300 | 18.3+0.30 | 2-M4 | 16J | 16+0.0180 | 5±0.0150 | 18.3+0.30 | 2-M4 |
| 17 | 17+0.0180 | 5+0.050+0.020 | 19+0.30 | 2-M4 | 17H | 17+0.0180 | 5+0.0300 | 19.3+0.30 | 2-M4 | 17J | 17+0.0180 | 5±0.0150 | 19.3+0.30 | 2-M4 |
| 18 | 18+0.0180 | 5+0.050+0.020 | 20+0.30 | 2-M4 | 18H | 18+0.0180 | 6+0.0300 | 20.8+0.30 | 2-M5 | 18J | 18+0.0180 | 6±0.0150 | 20.8+0.30 | 2-M5 |
| 19 | 19+0.0210 | 5+0.050+0.020 | 21+0.30 | 2-M4 | 19H | 19+0.0210 | 6+0.0300 | 21.8+0.30 | 2-M5 | 19J | 19+0.0210 | 6±0.0150 | 21.8+0.30 | 2-M5 |
| 20 | 20+0.0210 | 5+0.050+0.020 | 22+0.30 | 2-M4 | 20H | 20+0.0210 | 6+0.0300 | 22.8+0.30 | 2-M5 | 20J | 20+0.0210 | 6±0.0150 | 22.8+0.30 | 2-M5 |
| 22 | 22+0.0210 | 7+0.061+0.025 | 25+0.30 | 2-M6 | 22H | 22+0.0210 | 6+0.0300 | 24.8+0.30 | 2-M5 | 22J | 22+0.0210 | 6±0.0150 | 24.8+0.30 | 2-M5 |
| 24 | 24+0.0210 | 7+0.061+0.025 | 27+0.30 | 2-M6 | 24H | 24+0.0210 | 8+0.0360 | 27.3+0.30 | 2-M6 | 24J | 24+0.0210 | 8±0.0180 | 27.3+0.30 | 2-M6 |
| 25 | 25+0.0210 | 7+0.061+0.025 | 28+0.30 | 2-M6 | 25H | 25+0.0210 | 8+0.0360 | 28.3+0.30 | 2-M6 | 25J | 25+0.0210 | 8±0.0180 | 28.3+0.30 | 2-M6 |
| 28 | 28+0.0210 | 7+0.061+0.025 | 31+0.30 | 2-M6 | 28H | 28+0.0210 | 8+0.0360 | 31.3+0.30 | 2-M6 | 28J | 28+0.0210 | 8±0.0180 | 31.3+0.30 | 2-M6 |
| 30 | 30+0.0210 | 7+0.061+0.025 | 33+0.30 | 2-M6 | 30H | 30+0.0210 | 8+0.0360 | 33.3+0.30 | 2-M6 | 30J | 30+0.0210 | 8±0.0180 | 33.3+0.30 | 2-M6 |
| 32 | 32+0.0250 | 10+0.061+0.025 | 35.5+0.30 | 2-M8 | 32H | 32+0.0250 | 10+0.0360 | 35.3+0.30 | 2-M8 | 32J | 32+0.0250 | 10±0.0180 | 35.3+0.30 | 2-M8 |
| 35 | 35+0.0250 | 10+0.061+0.025 | 38.5+0.30 | 2-M8 | 35H | 35+0.0250 | 10+0.0360 | 38.3+0.30 | 2-M8 | 35J | 35+0.0250 | 10±0.0180 | 38.3+0.30 | 2-M8 |
| 38 | 38+0.0250 | 10+0.061+0.025 | 41.5+0.30 | 2-M8 | 38H | 38+0.0250 | 10+0.0360 | 41.3+0.30 | 2-M8 | 38J | 38+0.0250 | 10±0.0180 | 41.3+0.30 | 2-M8 |
| 40 | 40+0.0250 | 10+0.061+0.025 | 43.5+0.30 | 2-M8 | 40H | 40+0.0250 | 12+0.0430 | 43.3+0.30 | 2-M8 | 40J | 40+0.0250 | 12±0.0215 | 43.3+0.30 | 2-M8 |
| 42 | 42+0.0250 | 12+0.075+0.032 | 45.5+0.30 | 2-M8 | 42H | 42+0.0250 | 12+0.0430 | 45.3+0.30 | 2-M8 | 42J | 42+0.0250 | 12±0.0215 | 45.3+0.30 | 2-M8 |
| 45 | 45+0.0250 | 12+0.075+0.032 | 48.5+0.30 | 2-M8 | 45H | 45+0.0250 | 14+0.0430 | 48.8+0.30 | 2-M10 | 45J | 45+0.0250 | 14±0.0215 | 48.8+0.30 | 2-M10 |
| 48 | 48+0.0250 | 12+0.075+0.032 | 51.5+0.30 | 2-M8 | 48H | 48+0.0250 | 14+0.0430 | 51.8+0.30 | 2-M10 | 48J | 48+0.0250 | 14±0.0215 | 51.8+0.30 | 2-M10 |
| 50 | 50+0.0250 | 12+0.075+0.032 | 53.5+0.30 | 2-M8 | 50H | 50+0.0250 | 14+0.0430 | 53.8+0.30 | 2-M10 | 50J | 50+0.0250 | 14±0.0215 | 53.8+0.30 | 2-M10 |
| 55 | 55+0.0300 | 15+0.075+0.032 | 60+0.30 | 2-M10 | 55H | 55+0.0300 | 16+0.0430 | 59.3+0.30 | 2-M10 | 55J | 55+0.0300 | 16±0.0215 | 59.3+0.30 | 2-M10 |
| 56 | 56+0.0300 | 15+0.075+0.032 | 61+0.30 | 2-M10 | 56H | 56+0.0300 | 16+0.0430 | 60.3+0.30 | 2-M10 | 56J | 56+0.0300 | 16±0.0215 | 60.3+0.30 | 2-M10 |
| 60 | 60+0.0300 | 15+0.075+0.032 | 65+0.30 | 2-M10 | 60H | 60+0.0300 | 18+0.0430 | 64.4+0.30 | 2-M10 | 60J | 60+0.0300 | 18±0.0215 | 64.4+0.30 | 2-M10 |
| Models compliant with the new JIS standard (P9) JIS B 1301 1996 | Models compliant with the motor standard JIS C 4210 2001 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7，H8 | ToleranceP9 | + 0.30 0 | － | － | ToleranceG7，F7 | ToleranceH9 | － | ||
| 8P | 8 +0.022 | 3－0.006－0.031 | 9.4+0.30 | 2-M4 | - | - | - | - | - |
| 9P | 9 +0.022 | 3－0.006－0.031 | 10.4+0.30 | 2-M4 | - | - | - | - | - |
| 10P | 10 +0.022 | 3－0.006－0.031 | 11.4+0.30 | 2-M4 | - | - | - | - | - |
| 11P | 11+0.018 | 4－0.042－0.012 | 12.8+0.30 | 2-M4 | - | - | - | - | - |
| 12P | 12 +0.018 | 4－0.042－0.012 | 13.8+0.30 | 2-M4 | - | - | - | - | - |
| 14P | 14+0.018 | 5－0.042－0.012 | 16.3+0.30 | 2-M4 | 14N | 14+0.024+0.006 | 5+0.030 | 16.3+0.30 | 2-M4 |
| 15P | 15+0.018 | 5－0.042－0.012 | 17.3+0.30 | 2-M4 | - | - | - | - | - |
| 16P | 16+0.018 | 5－0.042－0.012 | 18.3+0.30 | 2-M4 | - | - | - | - | - |
| 17P | 17+0.018 | 5－0.042－0.012 | 19.3+0.30 | 2-M4 | - | - | - | - | - |
| 18P | 18+0.018 | 6－0.042－0.012 | 20.8+0.30 | 2-M5 | - | - | - | - | - |
| 19P | 19 +0.021 | 6－0.042－0.012 | 21.8+0.30 | 2-M5 | 19N | 19+0.028+0.007 | 6+0.030 | 21.8+0.30 | 2-M5 |
| 20P | 20 +0.021 | 6－0.042－0.012 | 22.8+0.30 | 2-M5 | - | - | - | - | - |
| 22P | 22 +0.021 | 6－0.042－0.012 | 24.8+0.30 | 2-M5 | - | - | - | - | - |
| 24P | 24 +0.021 | 8－0.051－0.015 | 27.3+0.30 | 2-M6 | 24N | 24+0.028+0.007 | 8+0.036 | 27.3+0.30 | 2-M6 |
| 25P | 25 +0.021 | 8－0.051－0.015 | 28.3+0.30 | 2-M6 | - | - | - | - | - |
| 28P | 28 +0.021 | 8－0.051－0.015 | 31.3+0.30 | 2-M6 | 28N | 28+0.028+0.007 | 8+0.036 | 31.3+0.30 | 2-M6 |
| 30P | 30 +0.021 | 8－0.051－0.015 | 33.3+0.30 | 2-M6 | - | - | - | - | - |
| 32P | 32 +0.025 | 10－0.051－0.015 | 35.3+0.30 | 2-M8 | - | - | - | ||
| 35P | 35 +0.025 | 10－0.051－0.015 | 38.3+0.30 | 2-M8 | - | - | - | - | |
| 38P | 38 +0.025 | 10－0.051－0.015 | 41.3+0.30 | 2-M8 | 38N | 38+0.050+0.025 | 10+0.036 | 41.3+0.30 | 2-M8 |
| 40P | 40 +0.025 | 12－0.061－0.018 | 43.3+0.30 | 2-M8 | - | - | - | - | - |
| 42P | 42 +0.025 | 12－0.061－0.018 | 45.3+0.30 | 2-M8 | 42N | 42+0.050+0.025 | 12+0.043 | 45.3+0.30 | 2-M8 |
| 45P | 45 +0.025 | 14－0.061－0.018 | 48.8+0.30 | 2-M10 | - | - | - | - | - |
| 48P | 48 +0.025 | 14－0.061－0.018 | 51.8+0.30 | 2-M10 | 48N | 48+0.050+0.025 | 14+0.043 | 51.8+0.30 | 2-M10 |
| 50P | 50 +0.025 | 14－0.061－0.018 | 53.8+0.30 | 2-M10 | - | - | - | - | - |
| 55P | 55 +0.030 | 16－0.061－0.018 | 59.3+0.30 | 2-M10 | 55N | 55+0.060+0.030 | 16+0.043 | 59.3+0.30 | 2-M10 |
| 56P | 56 +0.030 | 16－0.061－0.018 | 60.3+0.30 | 2-M10 | - | - | - | - | - |
| 60P | 60 +0.030 | 18－0.061－0.018 | 64.4+0.30 | 2-M10 | 60N | 60+0.060+0.030 | 18+0.043 | 64.4+0.30 | 2-M10 |
※Positions of set screws and keyways are not on the same plane.
※Set screws are included with the product.
※Positioning precision for keyway milling is determined by sight.
※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.
※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.
【Set screw position】
| Model | Distance from edge [mm] |
|---|---|
| SFS-05 | 7 |
| SFS-06 | 9 |
| SFS-08 | 10 |
| SFS-09 | 10 |
| SFS-10 | 12 |
| SFS-12 | 12 |
| SFS-14 | 15 |
SFS-□S (C) Types
[Specifications]
| Model | Rated torque［N・m］ | Misalignment | Max. rotation speed［min-1］ | Torsional stiffness［N・m/rad］ | Axial stiffness［N/mm］ | Moment of inertia［kg・m2］ | Mass［kg］ | |
|---|---|---|---|---|---|---|---|---|
| Angular［°］ | Axial［mm］ | |||||||
| SFS-05S-C | 15 | 1 | ±0.6 | 25000 | 16000 | 43 | 0.11×10-3 | 0.30 |
| SFS-06S-C | 30 | 1 | ±0.8 | 20000 | 29000 | 45 | 0.30×10-3 | 0.50 |
| SFS-08S-C | 60 | 1 | ±1.0 | 17000 | 83000 | 60 | 0.87×10-3 | 1.00 |
| SFS-09S-C | 135 | 1 | ±1.2 | 15000 | 170000 | 122 | 1.60×10-3 | 1.40 |
| SFS-10S-C | 190 | 1 | ±1.4 | 13000 | 250000 | 160 | 2.60×10-3 | 2.10 |
| SFS-12S-C | 340 | 1 | ±1.6 | 11000 | 430000 | 197 | 6.50×10-3 | 3.40 |
| SFS-14S-C | 600 | 1 | ±1.8 | 9500 | 780000 | 313 | 9.90×10-3 | 4.90 |
*Max. rotation speed does not take into account dynamic balance.
*The moment of inertia and mass are measured for the maximum bore diameter.
[Dimensions]
Unit [mm]
| Model | d1・d2 | D | N | L | LF | S | F | K | M | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min. | Max. | |||||||||
| SFS-05S-C | 8 | 20 | 56 | 32 | 45 | 20 | 5 | 11 | 24 | 4-M5×22 |
| SFS-06S-C | 8 | 25 | 68 | 40 | 56 | 25 | 6 | 10 | 30 | 4-M6×25 |
| SFS-08S-C | 11 | 35 | 82 | 54 | 66 | 30 | 6 | 11 | 38 | 4-M6×29 |
| SFS-09S-C | 11 | 38 | 94 | 58 | 68 | 30 | 8 | 21 | 42 | 4-M8×36 |
| SFS-10S-C | 16 | 42 | 104 | 68 | 80 | 35 | 10 | 16 | 48 | 4-M8×36 |
| SFS-12S-C | 19 | 50 | 126 | 78 | 91 | 40 | 11 | 23 | 54 | 4-M10×45 |
| SFS-14S-C | 22 | 60 | 144 | 88 | 102 | 45 | 12 | 31 | 61 | 4-M12×54 |
*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.
[Standard bore diameter]
| Model | Standard bore diameter d1・d2 [mm] | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 9 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 56 | 60 | |
| SFS-05S-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||
| SFS-06S-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-08S-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
| SFS-09S-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||
| SFS-10S-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-12S-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-14S-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.
【Standard Hole-Drilling Standards】
Unit [mm]
| Models compliant with the old JIS standard (class 2) JIS B 1301 1959 | Models compliant with the new JIS standard (H9) JIS B 1301 1996 | Models compliant with the new JIS standard (JS9) JIS B 1301 1996 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7,H8 | ToleranceE9 | － | － | ToleranceH7,H8 | ToleranceH9 | － | － | ToleranceH7,H8 | ToleranceJS9 | － | － | |||
| 8 | 8+0.0220 | － | － | 2-M4 | 8H | 8+0.0220 | 3+0.0250 | 9.4+0.30 | 2-M4 | 8J | 8+0.0220 | 3±0.0125 | 9.4+0.30 | 2-M4 |
| 9 | 9+0.0220 | － | － | 2-M4 | 9H | 9+0.0220 | 3+0.0250 | 10.4+0.30 | 2-M4 | 9J | 9+0.0220 | 3±0.0125 | 10.4+0.30 | 2-M4 |
| 10 | 10+0.0220 | － | － | 2-M4 | 10H | 10+0.0220 | 3+0.0250 | 11.4+0.30 | 2-M4 | 10J | 10+0.0220 | 3±0.0125 | 11.4+0.30 | 2-M4 |
| 11 | 11+0.0180 | － | － | 2-M4 | 11H | 11+0.0180 | 4+0.0300 | 12.8+0.30 | 2-M4 | 11J | 11+0.0180 | 4±0.0150 | 12.8+0.30 | 2-M4 |
| 12 | 12+0.0180 | 4+0.050+0.020 | 13.5+0.30 | 2-M4 | 12H | 12+0.0180 | 4+0.0300 | 13.8+0.30 | 2-M4 | 12J | 12+0.0180 | 4±0.0150 | 13.8+0.30 | 2-M4 |
| 14 | 14+0.0180 | 5+0.050+0.020 | 16+0.30 | 2-M4 | 14H | 14+0.0180 | 5+0.0300 | 16.3+0.30 | 2-M4 | 14J | 14+0.0180 | 5±0.0150 | 16.3+0.30 | 2-M4 |
| 15 | 15+0.0180 | 5+0.050+0.020 | 17+0.30 | 2-M4 | 15H | 15+0.0180 | 5+0.0300 | 17.3+0.30 | 2-M4 | 15J | 15+0.0180 | 5±0.0150 | 17.3+0.30 | 2-M4 |
| 16 | 16+0.0180 | 5+0.050+0.020 | 18+0.30 | 2-M4 | 16H | 16+0.0180 | 5+0.0300 | 18.3+0.30 | 2-M4 | 16J | 16+0.0180 | 5±0.0150 | 18.3+0.30 | 2-M4 |
| 17 | 17+0.0180 | 5+0.050+0.020 | 19+0.30 | 2-M4 | 17H | 17+0.0180 | 5+0.0300 | 19.3+0.30 | 2-M4 | 17J | 17+0.0180 | 5±0.0150 | 19.3+0.30 | 2-M4 |
| 18 | 18+0.0180 | 5+0.050+0.020 | 20+0.30 | 2-M4 | 18H | 18+0.0180 | 6+0.0300 | 20.8+0.30 | 2-M5 | 18J | 18+0.0180 | 6±0.0150 | 20.8+0.30 | 2-M5 |
| 19 | 19+0.0210 | 5+0.050+0.020 | 21+0.30 | 2-M4 | 19H | 19+0.0210 | 6+0.0300 | 21.8+0.30 | 2-M5 | 19J | 19+0.0210 | 6±0.0150 | 21.8+0.30 | 2-M5 |
| 20 | 20+0.0210 | 5+0.050+0.020 | 22+0.30 | 2-M4 | 20H | 20+0.0210 | 6+0.0300 | 22.8+0.30 | 2-M5 | 20J | 20+0.0210 | 6±0.0150 | 22.8+0.30 | 2-M5 |
| 22 | 22+0.0210 | 7+0.061+0.025 | 25+0.30 | 2-M6 | 22H | 22+0.0210 | 6+0.0300 | 24.8+0.30 | 2-M5 | 22J | 22+0.0210 | 6±0.0150 | 24.8+0.30 | 2-M5 |
| 24 | 24+0.0210 | 7+0.061+0.025 | 27+0.30 | 2-M6 | 24H | 24+0.0210 | 8+0.0360 | 27.3+0.30 | 2-M6 | 24J | 24+0.0210 | 8±0.0180 | 27.3+0.30 | 2-M6 |
| 25 | 25+0.0210 | 7+0.061+0.025 | 28+0.30 | 2-M6 | 25H | 25+0.0210 | 8+0.0360 | 28.3+0.30 | 2-M6 | 25J | 25+0.0210 | 8±0.0180 | 28.3+0.30 | 2-M6 |
| 28 | 28+0.0210 | 7+0.061+0.025 | 31+0.30 | 2-M6 | 28H | 28+0.0210 | 8+0.0360 | 31.3+0.30 | 2-M6 | 28J | 28+0.0210 | 8±0.0180 | 31.3+0.30 | 2-M6 |
| 30 | 30+0.0210 | 7+0.061+0.025 | 33+0.30 | 2-M6 | 30H | 30+0.0210 | 8+0.0360 | 33.3+0.30 | 2-M6 | 30J | 30+0.0210 | 8±0.0180 | 33.3+0.30 | 2-M6 |
| 32 | 32+0.0250 | 10+0.061+0.025 | 35.5+0.30 | 2-M8 | 32H | 32+0.0250 | 10+0.0360 | 35.3+0.30 | 2-M8 | 32J | 32+0.0250 | 10±0.0180 | 35.3+0.30 | 2-M8 |
| 35 | 35+0.0250 | 10+0.061+0.025 | 38.5+0.30 | 2-M8 | 35H | 35+0.0250 | 10+0.0360 | 38.3+0.30 | 2-M8 | 35J | 35+0.0250 | 10±0.0180 | 38.3+0.30 | 2-M8 |
| 38 | 38+0.0250 | 10+0.061+0.025 | 41.5+0.30 | 2-M8 | 38H | 38+0.0250 | 10+0.0360 | 41.3+0.30 | 2-M8 | 38J | 38+0.0250 | 10±0.0180 | 41.3+0.30 | 2-M8 |
| 40 | 40+0.0250 | 10+0.061+0.025 | 43.5+0.30 | 2-M8 | 40H | 40+0.0250 | 12+0.0430 | 43.3+0.30 | 2-M8 | 40J | 40+0.0250 | 12±0.0215 | 43.3+0.30 | 2-M8 |
| 42 | 42+0.0250 | 12+0.075+0.032 | 45.5+0.30 | 2-M8 | 42H | 42+0.0250 | 12+0.0430 | 45.3+0.30 | 2-M8 | 42J | 42+0.0250 | 12±0.0215 | 45.3+0.30 | 2-M8 |
| 45 | 45+0.0250 | 12+0.075+0.032 | 48.5+0.30 | 2-M8 | 45H | 45+0.0250 | 14+0.0430 | 48.8+0.30 | 2-M10 | 45J | 45+0.0250 | 14±0.0215 | 48.8+0.30 | 2-M10 |
| 48 | 48+0.0250 | 12+0.075+0.032 | 51.5+0.30 | 2-M8 | 48H | 48+0.0250 | 14+0.0430 | 51.8+0.30 | 2-M10 | 48J | 48+0.0250 | 14±0.0215 | 51.8+0.30 | 2-M10 |
| 50 | 50+0.0250 | 12+0.075+0.032 | 53.5+0.30 | 2-M8 | 50H | 50+0.0250 | 14+0.0430 | 53.8+0.30 | 2-M10 | 50J | 50+0.0250 | 14±0.0215 | 53.8+0.30 | 2-M10 |
| 55 | 55+0.0300 | 15+0.075+0.032 | 60+0.30 | 2-M10 | 55H | 55+0.0300 | 16+0.0430 | 59.3+0.30 | 2-M10 | 55J | 55+0.0300 | 16±0.0215 | 59.3+0.30 | 2-M10 |
| 56 | 56+0.0300 | 15+0.075+0.032 | 61+0.30 | 2-M10 | 56H | 56+0.0300 | 16+0.0430 | 60.3+0.30 | 2-M10 | 56J | 56+0.0300 | 16±0.0215 | 60.3+0.30 | 2-M10 |
| 60 | 60+0.0300 | 15+0.075+0.032 | 65+0.30 | 2-M10 | 60H | 60+0.0300 | 18+0.0430 | 64.4+0.30 | 2-M10 | 60J | 60+0.0300 | 18±0.0215 | 64.4+0.30 | 2-M10 |
| Models compliant with the new JIS standard (P9) JIS B 1301 1996 | Models compliant with the motor standard JIS C 4210 2001 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7，H8 | ToleranceP9 | + 0.30 0 | － | － | ToleranceG7，F7 | ToleranceH9 | － | ||
| 8P | 8 +0.022 | 3－0.006－0.031 | 9.4+0.30 | 2-M4 | - | - | - | - | - |
| 9P | 9 +0.022 | 3－0.006－0.031 | 10.4+0.30 | 2-M4 | - | - | - | - | - |
| 10P | 10 +0.022 | 3－0.006－0.031 | 11.4+0.30 | 2-M4 | - | - | - | - | - |
| 11P | 11+0.018 | 4－0.042－0.012 | 12.8+0.30 | 2-M4 | - | - | - | - | - |
| 12P | 12 +0.018 | 4－0.042－0.012 | 13.8+0.30 | 2-M4 | - | - | - | - | - |
| 14P | 14+0.018 | 5－0.042－0.012 | 16.3+0.30 | 2-M4 | 14N | 14+0.024+0.006 | 5+0.030 | 16.3+0.30 | 2-M4 |
| 15P | 15+0.018 | 5－0.042－0.012 | 17.3+0.30 | 2-M4 | - | - | - | - | - |
| 16P | 16+0.018 | 5－0.042－0.012 | 18.3+0.30 | 2-M4 | - | - | - | - | - |
| 17P | 17+0.018 | 5－0.042－0.012 | 19.3+0.30 | 2-M4 | - | - | - | - | - |
| 18P | 18+0.018 | 6－0.042－0.012 | 20.8+0.30 | 2-M5 | - | - | - | - | - |
| 19P | 19 +0.021 | 6－0.042－0.012 | 21.8+0.30 | 2-M5 | 19N | 19+0.028+0.007 | 6+0.030 | 21.8+0.30 | 2-M5 |
| 20P | 20 +0.021 | 6－0.042－0.012 | 22.8+0.30 | 2-M5 | - | - | - | - | - |
| 22P | 22 +0.021 | 6－0.042－0.012 | 24.8+0.30 | 2-M5 | - | - | - | - | - |
| 24P | 24 +0.021 | 8－0.051－0.015 | 27.3+0.30 | 2-M6 | 24N | 24+0.028+0.007 | 8+0.036 | 27.3+0.30 | 2-M6 |
| 25P | 25 +0.021 | 8－0.051－0.015 | 28.3+0.30 | 2-M6 | - | - | - | - | - |
| 28P | 28 +0.021 | 8－0.051－0.015 | 31.3+0.30 | 2-M6 | 28N | 28+0.028+0.007 | 8+0.036 | 31.3+0.30 | 2-M6 |
| 30P | 30 +0.021 | 8－0.051－0.015 | 33.3+0.30 | 2-M6 | - | - | - | - | - |
| 32P | 32 +0.025 | 10－0.051－0.015 | 35.3+0.30 | 2-M8 | - | - | - | ||
| 35P | 35 +0.025 | 10－0.051－0.015 | 38.3+0.30 | 2-M8 | - | - | - | - | |
| 38P | 38 +0.025 | 10－0.051－0.015 | 41.3+0.30 | 2-M8 | 38N | 38+0.050+0.025 | 10+0.036 | 41.3+0.30 | 2-M8 |
| 40P | 40 +0.025 | 12－0.061－0.018 | 43.3+0.30 | 2-M8 | - | - | - | - | - |
| 42P | 42 +0.025 | 12－0.061－0.018 | 45.3+0.30 | 2-M8 | 42N | 42+0.050+0.025 | 12+0.043 | 45.3+0.30 | 2-M8 |
| 45P | 45 +0.025 | 14－0.061－0.018 | 48.8+0.30 | 2-M10 | - | - | - | - | - |
| 48P | 48 +0.025 | 14－0.061－0.018 | 51.8+0.30 | 2-M10 | 48N | 48+0.050+0.025 | 14+0.043 | 51.8+0.30 | 2-M10 |
| 50P | 50 +0.025 | 14－0.061－0.018 | 53.8+0.30 | 2-M10 | - | - | - | - | - |
| 55P | 55 +0.030 | 16－0.061－0.018 | 59.3+0.30 | 2-M10 | 55N | 55+0.060+0.030 | 16+0.043 | 59.3+0.30 | 2-M10 |
| 56P | 56 +0.030 | 16－0.061－0.018 | 60.3+0.30 | 2-M10 | - | - | - | - | - |
| 60P | 60 +0.030 | 18－0.061－0.018 | 64.4+0.30 | 2-M10 | 60N | 60+0.060+0.030 | 18+0.043 | 64.4+0.30 | 2-M10 |
※Positions of set screws and keyways are not on the same plane.
※Set screws are included with the product.
※Positioning precision for keyway milling is determined by sight.
※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.
※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.
【Set screw position】
| Model | Distance from edge [mm] |
|---|---|
| SFS-05 | 7 |
| SFS-06 | 9 |
| SFS-08 | 10 |
| SFS-09 | 10 |
| SFS-10 | 12 |
| SFS-12 | 12 |
| SFS-14 | 15 |
SFS-□W Types
[Specifications]
| Model | Rated torque［N・m］ | Misalignment | Max. rotation speed［min-1］ | Torsional stiffness［N・m/rad］ | Axial stiffness［N/mm］ | Moment of inertia［kg・m2］ | Mass［kg］ | ||
|---|---|---|---|---|---|---|---|---|---|
| Parallel［mm］ | Angular［°］ | Axial［mm］ | |||||||
| SFS-05W | 20 | 0.2 | 1(On one side) | ±1.2 | 10000 | 8000 | 21 | 0.14×10-3 | 0.40 |
| SFS-06W | 40 | 0.3 | 1(On one side) | ±1.6 | 8000 | 14000 | 22 | 0.41×10-3 | 0.70 |
| SFS-08W | 80 | 0.3 | 1(On one side) | ±2.0 | 6800 | 41000 | 30 | 1.10×10-3 | 1.30 |
| SFS-09W | 180 | 0.5 | 1(On one side) | ±2.4 | 6000 | 85000 | 61 | 2.20×10-3 | 2.10 |
| SFS-10W | 250 | 0.5 | 1(On one side) | ±2.8 | 5200 | 125000 | 80 | 3.60×10-3 | 2.80 |
| SFS-12W | 450 | 0.6 | 1(On one side) | ±3.2 | 4400 | 215000 | 98 | 9.20×10-3 | 4.90 |
| SFS-14W | 800 | 0.7 | 1(On one side) | ±3.6 | 3800 | 390000 | 156 | 15.00×10-3 | 7.10 |
*Max. rotation speed does not take into account dynamic balance.
*The moment of inertia and mass are measured for the maximum bore diameter.
[Dimensions]
Unit [mm]
| Model | d1・d2 | D | N | L | LF | LP | S | F | d3 | K | M | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pilot bore | Min. | Max. | |||||||||||
| SFS-05W | 7 | 8 | 20 | 56 | 32 | 58 | 20 | 8 | 5 | 4 | 20 | 24 | 8-M5×15 |
| SFS-06W | 7 | 8 | 25 | 68 | 40 | 74 | 25 | 12 | 6 | 3 | 24 | 30 | 8-M6×18 |
| SFS-08W | 10 | 11 | 35 | 82 | 54 | 84 | 30 | 12 | 6 | 2 | 28 | 38 | 8-M6×20 |
| SFS-09W | 10 | 11 | 38 | 94 | 58 | 98 | 30 | 22 | 8 | 12 | 32 | 42 | 8-M8×27 |
| SFS-10W | 15 | 16 | 42 | 104 | 68 | 110 | 35 | 20 | 10 | 7 | 34 | 48 | 8-M8×27 |
| SFS-12W | 18 | 19 | 50 | 126 | 78 | 127 | 40 | 25 | 11 | 10 | 40 | 54 | 8-M10×32 |
| SFS-14W | 20 | 22 | 60 | 144 | 88 | 144 | 45 | 30 | 12 | 15 | 46 | 61 | 8-M12×38 |
*Pilot bores are to be drilled into the part.
*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.
[Standard bore diameter]
| Model | Standard bore diameter d1・d2 [mm] | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 9 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 56 | 60 | |
| SFS-05W | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||
| SFS-06W | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-08W | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
| SFS-09W | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||
| SFS-10W | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-12W | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-14W | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.
【Standard Hole-Drilling Standards】
Unit [mm]
| Models compliant with the old JIS standard (class 2) JIS B 1301 1959 | Models compliant with the new JIS standard (H9) JIS B 1301 1996 | Models compliant with the new JIS standard (JS9) JIS B 1301 1996 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7,H8 | ToleranceE9 | － | － | ToleranceH7,H8 | ToleranceH9 | － | － | ToleranceH7,H8 | ToleranceJS9 | － | － | |||
| 8 | 8+0.0220 | － | － | 2-M4 | 8H | 8+0.0220 | 3+0.0250 | 9.4+0.30 | 2-M4 | 8J | 8+0.0220 | 3±0.0125 | 9.4+0.30 | 2-M4 |
| 9 | 9+0.0220 | － | － | 2-M4 | 9H | 9+0.0220 | 3+0.0250 | 10.4+0.30 | 2-M4 | 9J | 9+0.0220 | 3±0.0125 | 10.4+0.30 | 2-M4 |
| 10 | 10+0.0220 | － | － | 2-M4 | 10H | 10+0.0220 | 3+0.0250 | 11.4+0.30 | 2-M4 | 10J | 10+0.0220 | 3±0.0125 | 11.4+0.30 | 2-M4 |
| 11 | 11+0.0180 | － | － | 2-M4 | 11H | 11+0.0180 | 4+0.0300 | 12.8+0.30 | 2-M4 | 11J | 11+0.0180 | 4±0.0150 | 12.8+0.30 | 2-M4 |
| 12 | 12+0.0180 | 4+0.050+0.020 | 13.5+0.30 | 2-M4 | 12H | 12+0.0180 | 4+0.0300 | 13.8+0.30 | 2-M4 | 12J | 12+0.0180 | 4±0.0150 | 13.8+0.30 | 2-M4 |
| 14 | 14+0.0180 | 5+0.050+0.020 | 16+0.30 | 2-M4 | 14H | 14+0.0180 | 5+0.0300 | 16.3+0.30 | 2-M4 | 14J | 14+0.0180 | 5±0.0150 | 16.3+0.30 | 2-M4 |
| 15 | 15+0.0180 | 5+0.050+0.020 | 17+0.30 | 2-M4 | 15H | 15+0.0180 | 5+0.0300 | 17.3+0.30 | 2-M4 | 15J | 15+0.0180 | 5±0.0150 | 17.3+0.30 | 2-M4 |
| 16 | 16+0.0180 | 5+0.050+0.020 | 18+0.30 | 2-M4 | 16H | 16+0.0180 | 5+0.0300 | 18.3+0.30 | 2-M4 | 16J | 16+0.0180 | 5±0.0150 | 18.3+0.30 | 2-M4 |
| 17 | 17+0.0180 | 5+0.050+0.020 | 19+0.30 | 2-M4 | 17H | 17+0.0180 | 5+0.0300 | 19.3+0.30 | 2-M4 | 17J | 17+0.0180 | 5±0.0150 | 19.3+0.30 | 2-M4 |
| 18 | 18+0.0180 | 5+0.050+0.020 | 20+0.30 | 2-M4 | 18H | 18+0.0180 | 6+0.0300 | 20.8+0.30 | 2-M5 | 18J | 18+0.0180 | 6±0.0150 | 20.8+0.30 | 2-M5 |
| 19 | 19+0.0210 | 5+0.050+0.020 | 21+0.30 | 2-M4 | 19H | 19+0.0210 | 6+0.0300 | 21.8+0.30 | 2-M5 | 19J | 19+0.0210 | 6±0.0150 | 21.8+0.30 | 2-M5 |
| 20 | 20+0.0210 | 5+0.050+0.020 | 22+0.30 | 2-M4 | 20H | 20+0.0210 | 6+0.0300 | 22.8+0.30 | 2-M5 | 20J | 20+0.0210 | 6±0.0150 | 22.8+0.30 | 2-M5 |
| 22 | 22+0.0210 | 7+0.061+0.025 | 25+0.30 | 2-M6 | 22H | 22+0.0210 | 6+0.0300 | 24.8+0.30 | 2-M5 | 22J | 22+0.0210 | 6±0.0150 | 24.8+0.30 | 2-M5 |
| 24 | 24+0.0210 | 7+0.061+0.025 | 27+0.30 | 2-M6 | 24H | 24+0.0210 | 8+0.0360 | 27.3+0.30 | 2-M6 | 24J | 24+0.0210 | 8±0.0180 | 27.3+0.30 | 2-M6 |
| 25 | 25+0.0210 | 7+0.061+0.025 | 28+0.30 | 2-M6 | 25H | 25+0.0210 | 8+0.0360 | 28.3+0.30 | 2-M6 | 25J | 25+0.0210 | 8±0.0180 | 28.3+0.30 | 2-M6 |
| 28 | 28+0.0210 | 7+0.061+0.025 | 31+0.30 | 2-M6 | 28H | 28+0.0210 | 8+0.0360 | 31.3+0.30 | 2-M6 | 28J | 28+0.0210 | 8±0.0180 | 31.3+0.30 | 2-M6 |
| 30 | 30+0.0210 | 7+0.061+0.025 | 33+0.30 | 2-M6 | 30H | 30+0.0210 | 8+0.0360 | 33.3+0.30 | 2-M6 | 30J | 30+0.0210 | 8±0.0180 | 33.3+0.30 | 2-M6 |
| 32 | 32+0.0250 | 10+0.061+0.025 | 35.5+0.30 | 2-M8 | 32H | 32+0.0250 | 10+0.0360 | 35.3+0.30 | 2-M8 | 32J | 32+0.0250 | 10±0.0180 | 35.3+0.30 | 2-M8 |
| 35 | 35+0.0250 | 10+0.061+0.025 | 38.5+0.30 | 2-M8 | 35H | 35+0.0250 | 10+0.0360 | 38.3+0.30 | 2-M8 | 35J | 35+0.0250 | 10±0.0180 | 38.3+0.30 | 2-M8 |
| 38 | 38+0.0250 | 10+0.061+0.025 | 41.5+0.30 | 2-M8 | 38H | 38+0.0250 | 10+0.0360 | 41.3+0.30 | 2-M8 | 38J | 38+0.0250 | 10±0.0180 | 41.3+0.30 | 2-M8 |
| 40 | 40+0.0250 | 10+0.061+0.025 | 43.5+0.30 | 2-M8 | 40H | 40+0.0250 | 12+0.0430 | 43.3+0.30 | 2-M8 | 40J | 40+0.0250 | 12±0.0215 | 43.3+0.30 | 2-M8 |
| 42 | 42+0.0250 | 12+0.075+0.032 | 45.5+0.30 | 2-M8 | 42H | 42+0.0250 | 12+0.0430 | 45.3+0.30 | 2-M8 | 42J | 42+0.0250 | 12±0.0215 | 45.3+0.30 | 2-M8 |
| 45 | 45+0.0250 | 12+0.075+0.032 | 48.5+0.30 | 2-M8 | 45H | 45+0.0250 | 14+0.0430 | 48.8+0.30 | 2-M10 | 45J | 45+0.0250 | 14±0.0215 | 48.8+0.30 | 2-M10 |
| 48 | 48+0.0250 | 12+0.075+0.032 | 51.5+0.30 | 2-M8 | 48H | 48+0.0250 | 14+0.0430 | 51.8+0.30 | 2-M10 | 48J | 48+0.0250 | 14±0.0215 | 51.8+0.30 | 2-M10 |
| 50 | 50+0.0250 | 12+0.075+0.032 | 53.5+0.30 | 2-M8 | 50H | 50+0.0250 | 14+0.0430 | 53.8+0.30 | 2-M10 | 50J | 50+0.0250 | 14±0.0215 | 53.8+0.30 | 2-M10 |
| 55 | 55+0.0300 | 15+0.075+0.032 | 60+0.30 | 2-M10 | 55H | 55+0.0300 | 16+0.0430 | 59.3+0.30 | 2-M10 | 55J | 55+0.0300 | 16±0.0215 | 59.3+0.30 | 2-M10 |
| 56 | 56+0.0300 | 15+0.075+0.032 | 61+0.30 | 2-M10 | 56H | 56+0.0300 | 16+0.0430 | 60.3+0.30 | 2-M10 | 56J | 56+0.0300 | 16±0.0215 | 60.3+0.30 | 2-M10 |
| 60 | 60+0.0300 | 15+0.075+0.032 | 65+0.30 | 2-M10 | 60H | 60+0.0300 | 18+0.0430 | 64.4+0.30 | 2-M10 | 60J | 60+0.0300 | 18±0.0215 | 64.4+0.30 | 2-M10 |
| Models compliant with the new JIS standard (P9) JIS B 1301 1996 | Models compliant with the motor standard JIS C 4210 2001 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7，H8 | ToleranceP9 | + 0.30 0 | － | － | ToleranceG7，F7 | ToleranceH9 | － | ||
| 8P | 8 +0.022 | 3－0.006－0.031 | 9.4+0.30 | 2-M4 | - | - | - | - | - |
| 9P | 9 +0.022 | 3－0.006－0.031 | 10.4+0.30 | 2-M4 | - | - | - | - | - |
| 10P | 10 +0.022 | 3－0.006－0.031 | 11.4+0.30 | 2-M4 | - | - | - | - | - |
| 11P | 11+0.018 | 4－0.042－0.012 | 12.8+0.30 | 2-M4 | - | - | - | - | - |
| 12P | 12 +0.018 | 4－0.042－0.012 | 13.8+0.30 | 2-M4 | - | - | - | - | - |
| 14P | 14+0.018 | 5－0.042－0.012 | 16.3+0.30 | 2-M4 | 14N | 14+0.024+0.006 | 5+0.030 | 16.3+0.30 | 2-M4 |
| 15P | 15+0.018 | 5－0.042－0.012 | 17.3+0.30 | 2-M4 | - | - | - | - | - |
| 16P | 16+0.018 | 5－0.042－0.012 | 18.3+0.30 | 2-M4 | - | - | - | - | - |
| 17P | 17+0.018 | 5－0.042－0.012 | 19.3+0.30 | 2-M4 | - | - | - | - | - |
| 18P | 18+0.018 | 6－0.042－0.012 | 20.8+0.30 | 2-M5 | - | - | - | - | - |
| 19P | 19 +0.021 | 6－0.042－0.012 | 21.8+0.30 | 2-M5 | 19N | 19+0.028+0.007 | 6+0.030 | 21.8+0.30 | 2-M5 |
| 20P | 20 +0.021 | 6－0.042－0.012 | 22.8+0.30 | 2-M5 | - | - | - | - | - |
| 22P | 22 +0.021 | 6－0.042－0.012 | 24.8+0.30 | 2-M5 | - | - | - | - | - |
| 24P | 24 +0.021 | 8－0.051－0.015 | 27.3+0.30 | 2-M6 | 24N | 24+0.028+0.007 | 8+0.036 | 27.3+0.30 | 2-M6 |
| 25P | 25 +0.021 | 8－0.051－0.015 | 28.3+0.30 | 2-M6 | - | - | - | - | - |
| 28P | 28 +0.021 | 8－0.051－0.015 | 31.3+0.30 | 2-M6 | 28N | 28+0.028+0.007 | 8+0.036 | 31.3+0.30 | 2-M6 |
| 30P | 30 +0.021 | 8－0.051－0.015 | 33.3+0.30 | 2-M6 | - | - | - | - | - |
| 32P | 32 +0.025 | 10－0.051－0.015 | 35.3+0.30 | 2-M8 | - | - | - | ||
| 35P | 35 +0.025 | 10－0.051－0.015 | 38.3+0.30 | 2-M8 | - | - | - | - | |
| 38P | 38 +0.025 | 10－0.051－0.015 | 41.3+0.30 | 2-M8 | 38N | 38+0.050+0.025 | 10+0.036 | 41.3+0.30 | 2-M8 |
| 40P | 40 +0.025 | 12－0.061－0.018 | 43.3+0.30 | 2-M8 | - | - | - | - | - |
| 42P | 42 +0.025 | 12－0.061－0.018 | 45.3+0.30 | 2-M8 | 42N | 42+0.050+0.025 | 12+0.043 | 45.3+0.30 | 2-M8 |
| 45P | 45 +0.025 | 14－0.061－0.018 | 48.8+0.30 | 2-M10 | - | - | - | - | - |
| 48P | 48 +0.025 | 14－0.061－0.018 | 51.8+0.30 | 2-M10 | 48N | 48+0.050+0.025 | 14+0.043 | 51.8+0.30 | 2-M10 |
| 50P | 50 +0.025 | 14－0.061－0.018 | 53.8+0.30 | 2-M10 | - | - | - | - | - |
| 55P | 55 +0.030 | 16－0.061－0.018 | 59.3+0.30 | 2-M10 | 55N | 55+0.060+0.030 | 16+0.043 | 59.3+0.30 | 2-M10 |
| 56P | 56 +0.030 | 16－0.061－0.018 | 60.3+0.30 | 2-M10 | - | - | - | - | - |
| 60P | 60 +0.030 | 18－0.061－0.018 | 64.4+0.30 | 2-M10 | 60N | 60+0.060+0.030 | 18+0.043 | 64.4+0.30 | 2-M10 |
※Positions of set screws and keyways are not on the same plane.
※Set screws are included with the product.
※Positioning precision for keyway milling is determined by sight.
※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.
※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.
【Set screw position】
| Model | Distance from edge [mm] |
|---|---|
| SFS-05 | 7 |
| SFS-06 | 9 |
| SFS-08 | 10 |
| SFS-09 | 10 |
| SFS-10 | 12 |
| SFS-12 | 12 |
| SFS-14 | 15 |
SFS-□W (C) Types
[Specifications]
| Model | Rated torque［N・m］ | Misalignment | Max. rotation speed［min-1］ | Torsional stiffness［N・m/rad］ | Axial stiffness［N/mm］ | Moment of inertia［kg･m2］ | Mass［kg］ | ||
|---|---|---|---|---|---|---|---|---|---|
| Parallel［mm］ | Angular［°］ | Axial［mm］ | |||||||
| SFS-05W-C | 15 | 0.2 | 1(On one side) | ±1.2 | 10000 | 8000 | 21 | 0.14×10-3 | 0.40 |
| SFS-06W-C | 30 | 0.3 | 1(On one side) | ±1.6 | 8000 | 14000 | 22 | 0.41×10-3 | 0.70 |
| SFS-08W-C | 60 | 0.3 | 1(On one side) | ±2.0 | 6800 | 41000 | 30 | 1.10×10-3 | 1.30 |
| SFS-09W-C | 135 | 0.5 | 1(On one side) | ±2.4 | 6000 | 85000 | 61 | 2.20×10-3 | 2.10 |
| SFS-10W-C | 190 | 0.5 | 1(On one side) | ±2.8 | 5200 | 125000 | 80 | 3.60×10-3 | 2.80 |
| SFS-12W-C | 340 | 0.6 | 1(On one side) | ±3.2 | 4400 | 215000 | 98 | 9.20×10-3 | 4.90 |
| SFS-14W-C | 600 | 0.7 | 1(On one side) | ±3.6 | 3800 | 390000 | 156 | 15.00×10-3 | 7.10 |
*Max. rotation speed does not take into account dynamic balance.
*The moment of inertia and mass are measured for the maximum bore diameter.
[Dimensions]
Unit [mm]
| Model | d1・d2 | D | N | L | LF | LP | S | F | d3 | K | M | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. | Max. | |||||||||||
| SFS-05W-C | 8 | 20 | 56 | 32 | 58 | 20 | 8 | 5 | 4 | 20 | 24 | 8-M5×15 |
| SFS-06W-C | 8 | 25 | 68 | 40 | 74 | 25 | 12 | 6 | 3 | 24 | 30 | 8-M6×18 |
| SFS-08W-C | 11 | 35 | 82 | 54 | 84 | 30 | 12 | 6 | 2 | 28 | 38 | 8-M6×20 |
| SFS-09W-C | 11 | 38 | 94 | 58 | 98 | 30 | 22 | 8 | 12 | 32 | 42 | 8-M8×27 |
| SFS-10W-C | 16 | 42 | 104 | 68 | 110 | 35 | 20 | 10 | 7 | 34 | 48 | 8-M8×27 |
| SFS-12W-C | 19 | 50 | 126 | 78 | 127 | 40 | 25 | 11 | 10 | 40 | 54 | 8-M10×32 |
| SFS-14W-C | 22 | 60 | 144 | 88 | 144 | 45 | 30 | 12 | 15 | 46 | 61 | 8-M12×38 |
*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.
[Standard bore diameter]
| Model | Standard bore diameter d1・d2 [mm] | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 9 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 56 | 60 | |
| SFS-05W-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||
| SFS-06W-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-08W-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
| SFS-09W-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||
| SFS-10W-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-12W-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-14W-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.
【Standard Hole-Drilling Standards】
Unit [mm]
| Models compliant with the old JIS standard (class 2) JIS B 1301 1959 | Models compliant with the new JIS standard (H9) JIS B 1301 1996 | Models compliant with the new JIS standard (JS9) JIS B 1301 1996 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7,H8 | ToleranceE9 | － | － | ToleranceH7,H8 | ToleranceH9 | － | － | ToleranceH7,H8 | ToleranceJS9 | － | － | |||
| 8 | 8+0.0220 | － | － | 2-M4 | 8H | 8+0.0220 | 3+0.0250 | 9.4+0.30 | 2-M4 | 8J | 8+0.0220 | 3±0.0125 | 9.4+0.30 | 2-M4 |
| 9 | 9+0.0220 | － | － | 2-M4 | 9H | 9+0.0220 | 3+0.0250 | 10.4+0.30 | 2-M4 | 9J | 9+0.0220 | 3±0.0125 | 10.4+0.30 | 2-M4 |
| 10 | 10+0.0220 | － | － | 2-M4 | 10H | 10+0.0220 | 3+0.0250 | 11.4+0.30 | 2-M4 | 10J | 10+0.0220 | 3±0.0125 | 11.4+0.30 | 2-M4 |
| 11 | 11+0.0180 | － | － | 2-M4 | 11H | 11+0.0180 | 4+0.0300 | 12.8+0.30 | 2-M4 | 11J | 11+0.0180 | 4±0.0150 | 12.8+0.30 | 2-M4 |
| 12 | 12+0.0180 | 4+0.050+0.020 | 13.5+0.30 | 2-M4 | 12H | 12+0.0180 | 4+0.0300 | 13.8+0.30 | 2-M4 | 12J | 12+0.0180 | 4±0.0150 | 13.8+0.30 | 2-M4 |
| 14 | 14+0.0180 | 5+0.050+0.020 | 16+0.30 | 2-M4 | 14H | 14+0.0180 | 5+0.0300 | 16.3+0.30 | 2-M4 | 14J | 14+0.0180 | 5±0.0150 | 16.3+0.30 | 2-M4 |
| 15 | 15+0.0180 | 5+0.050+0.020 | 17+0.30 | 2-M4 | 15H | 15+0.0180 | 5+0.0300 | 17.3+0.30 | 2-M4 | 15J | 15+0.0180 | 5±0.0150 | 17.3+0.30 | 2-M4 |
| 16 | 16+0.0180 | 5+0.050+0.020 | 18+0.30 | 2-M4 | 16H | 16+0.0180 | 5+0.0300 | 18.3+0.30 | 2-M4 | 16J | 16+0.0180 | 5±0.0150 | 18.3+0.30 | 2-M4 |
| 17 | 17+0.0180 | 5+0.050+0.020 | 19+0.30 | 2-M4 | 17H | 17+0.0180 | 5+0.0300 | 19.3+0.30 | 2-M4 | 17J | 17+0.0180 | 5±0.0150 | 19.3+0.30 | 2-M4 |
| 18 | 18+0.0180 | 5+0.050+0.020 | 20+0.30 | 2-M4 | 18H | 18+0.0180 | 6+0.0300 | 20.8+0.30 | 2-M5 | 18J | 18+0.0180 | 6±0.0150 | 20.8+0.30 | 2-M5 |
| 19 | 19+0.0210 | 5+0.050+0.020 | 21+0.30 | 2-M4 | 19H | 19+0.0210 | 6+0.0300 | 21.8+0.30 | 2-M5 | 19J | 19+0.0210 | 6±0.0150 | 21.8+0.30 | 2-M5 |
| 20 | 20+0.0210 | 5+0.050+0.020 | 22+0.30 | 2-M4 | 20H | 20+0.0210 | 6+0.0300 | 22.8+0.30 | 2-M5 | 20J | 20+0.0210 | 6±0.0150 | 22.8+0.30 | 2-M5 |
| 22 | 22+0.0210 | 7+0.061+0.025 | 25+0.30 | 2-M6 | 22H | 22+0.0210 | 6+0.0300 | 24.8+0.30 | 2-M5 | 22J | 22+0.0210 | 6±0.0150 | 24.8+0.30 | 2-M5 |
| 24 | 24+0.0210 | 7+0.061+0.025 | 27+0.30 | 2-M6 | 24H | 24+0.0210 | 8+0.0360 | 27.3+0.30 | 2-M6 | 24J | 24+0.0210 | 8±0.0180 | 27.3+0.30 | 2-M6 |
| 25 | 25+0.0210 | 7+0.061+0.025 | 28+0.30 | 2-M6 | 25H | 25+0.0210 | 8+0.0360 | 28.3+0.30 | 2-M6 | 25J | 25+0.0210 | 8±0.0180 | 28.3+0.30 | 2-M6 |
| 28 | 28+0.0210 | 7+0.061+0.025 | 31+0.30 | 2-M6 | 28H | 28+0.0210 | 8+0.0360 | 31.3+0.30 | 2-M6 | 28J | 28+0.0210 | 8±0.0180 | 31.3+0.30 | 2-M6 |
| 30 | 30+0.0210 | 7+0.061+0.025 | 33+0.30 | 2-M6 | 30H | 30+0.0210 | 8+0.0360 | 33.3+0.30 | 2-M6 | 30J | 30+0.0210 | 8±0.0180 | 33.3+0.30 | 2-M6 |
| 32 | 32+0.0250 | 10+0.061+0.025 | 35.5+0.30 | 2-M8 | 32H | 32+0.0250 | 10+0.0360 | 35.3+0.30 | 2-M8 | 32J | 32+0.0250 | 10±0.0180 | 35.3+0.30 | 2-M8 |
| 35 | 35+0.0250 | 10+0.061+0.025 | 38.5+0.30 | 2-M8 | 35H | 35+0.0250 | 10+0.0360 | 38.3+0.30 | 2-M8 | 35J | 35+0.0250 | 10±0.0180 | 38.3+0.30 | 2-M8 |
| 38 | 38+0.0250 | 10+0.061+0.025 | 41.5+0.30 | 2-M8 | 38H | 38+0.0250 | 10+0.0360 | 41.3+0.30 | 2-M8 | 38J | 38+0.0250 | 10±0.0180 | 41.3+0.30 | 2-M8 |
| 40 | 40+0.0250 | 10+0.061+0.025 | 43.5+0.30 | 2-M8 | 40H | 40+0.0250 | 12+0.0430 | 43.3+0.30 | 2-M8 | 40J | 40+0.0250 | 12±0.0215 | 43.3+0.30 | 2-M8 |
| 42 | 42+0.0250 | 12+0.075+0.032 | 45.5+0.30 | 2-M8 | 42H | 42+0.0250 | 12+0.0430 | 45.3+0.30 | 2-M8 | 42J | 42+0.0250 | 12±0.0215 | 45.3+0.30 | 2-M8 |
| 45 | 45+0.0250 | 12+0.075+0.032 | 48.5+0.30 | 2-M8 | 45H | 45+0.0250 | 14+0.0430 | 48.8+0.30 | 2-M10 | 45J | 45+0.0250 | 14±0.0215 | 48.8+0.30 | 2-M10 |
| 48 | 48+0.0250 | 12+0.075+0.032 | 51.5+0.30 | 2-M8 | 48H | 48+0.0250 | 14+0.0430 | 51.8+0.30 | 2-M10 | 48J | 48+0.0250 | 14±0.0215 | 51.8+0.30 | 2-M10 |
| 50 | 50+0.0250 | 12+0.075+0.032 | 53.5+0.30 | 2-M8 | 50H | 50+0.0250 | 14+0.0430 | 53.8+0.30 | 2-M10 | 50J | 50+0.0250 | 14±0.0215 | 53.8+0.30 | 2-M10 |
| 55 | 55+0.0300 | 15+0.075+0.032 | 60+0.30 | 2-M10 | 55H | 55+0.0300 | 16+0.0430 | 59.3+0.30 | 2-M10 | 55J | 55+0.0300 | 16±0.0215 | 59.3+0.30 | 2-M10 |
| 56 | 56+0.0300 | 15+0.075+0.032 | 61+0.30 | 2-M10 | 56H | 56+0.0300 | 16+0.0430 | 60.3+0.30 | 2-M10 | 56J | 56+0.0300 | 16±0.0215 | 60.3+0.30 | 2-M10 |
| 60 | 60+0.0300 | 15+0.075+0.032 | 65+0.30 | 2-M10 | 60H | 60+0.0300 | 18+0.0430 | 64.4+0.30 | 2-M10 | 60J | 60+0.0300 | 18±0.0215 | 64.4+0.30 | 2-M10 |
| Models compliant with the new JIS standard (P9) JIS B 1301 1996 | Models compliant with the motor standard JIS C 4210 2001 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7，H8 | ToleranceP9 | + 0.30 0 | － | － | ToleranceG7，F7 | ToleranceH9 | － | ||
| 8P | 8 +0.022 | 3－0.006－0.031 | 9.4+0.30 | 2-M4 | - | - | - | - | - |
| 9P | 9 +0.022 | 3－0.006－0.031 | 10.4+0.30 | 2-M4 | - | - | - | - | - |
| 10P | 10 +0.022 | 3－0.006－0.031 | 11.4+0.30 | 2-M4 | - | - | - | - | - |
| 11P | 11+0.018 | 4－0.042－0.012 | 12.8+0.30 | 2-M4 | - | - | - | - | - |
| 12P | 12 +0.018 | 4－0.042－0.012 | 13.8+0.30 | 2-M4 | - | - | - | - | - |
| 14P | 14+0.018 | 5－0.042－0.012 | 16.3+0.30 | 2-M4 | 14N | 14+0.024+0.006 | 5+0.030 | 16.3+0.30 | 2-M4 |
| 15P | 15+0.018 | 5－0.042－0.012 | 17.3+0.30 | 2-M4 | - | - | - | - | - |
| 16P | 16+0.018 | 5－0.042－0.012 | 18.3+0.30 | 2-M4 | - | - | - | - | - |
| 17P | 17+0.018 | 5－0.042－0.012 | 19.3+0.30 | 2-M4 | - | - | - | - | - |
| 18P | 18+0.018 | 6－0.042－0.012 | 20.8+0.30 | 2-M5 | - | - | - | - | - |
| 19P | 19 +0.021 | 6－0.042－0.012 | 21.8+0.30 | 2-M5 | 19N | 19+0.028+0.007 | 6+0.030 | 21.8+0.30 | 2-M5 |
| 20P | 20 +0.021 | 6－0.042－0.012 | 22.8+0.30 | 2-M5 | - | - | - | - | - |
| 22P | 22 +0.021 | 6－0.042－0.012 | 24.8+0.30 | 2-M5 | - | - | - | - | - |
| 24P | 24 +0.021 | 8－0.051－0.015 | 27.3+0.30 | 2-M6 | 24N | 24+0.028+0.007 | 8+0.036 | 27.3+0.30 | 2-M6 |
| 25P | 25 +0.021 | 8－0.051－0.015 | 28.3+0.30 | 2-M6 | - | - | - | - | - |
| 28P | 28 +0.021 | 8－0.051－0.015 | 31.3+0.30 | 2-M6 | 28N | 28+0.028+0.007 | 8+0.036 | 31.3+0.30 | 2-M6 |
| 30P | 30 +0.021 | 8－0.051－0.015 | 33.3+0.30 | 2-M6 | - | - | - | - | - |
| 32P | 32 +0.025 | 10－0.051－0.015 | 35.3+0.30 | 2-M8 | - | - | - | ||
| 35P | 35 +0.025 | 10－0.051－0.015 | 38.3+0.30 | 2-M8 | - | - | - | - | |
| 38P | 38 +0.025 | 10－0.051－0.015 | 41.3+0.30 | 2-M8 | 38N | 38+0.050+0.025 | 10+0.036 | 41.3+0.30 | 2-M8 |
| 40P | 40 +0.025 | 12－0.061－0.018 | 43.3+0.30 | 2-M8 | - | - | - | - | - |
| 42P | 42 +0.025 | 12－0.061－0.018 | 45.3+0.30 | 2-M8 | 42N | 42+0.050+0.025 | 12+0.043 | 45.3+0.30 | 2-M8 |
| 45P | 45 +0.025 | 14－0.061－0.018 | 48.8+0.30 | 2-M10 | - | - | - | - | - |
| 48P | 48 +0.025 | 14－0.061－0.018 | 51.8+0.30 | 2-M10 | 48N | 48+0.050+0.025 | 14+0.043 | 51.8+0.30 | 2-M10 |
| 50P | 50 +0.025 | 14－0.061－0.018 | 53.8+0.30 | 2-M10 | - | - | - | - | - |
| 55P | 55 +0.030 | 16－0.061－0.018 | 59.3+0.30 | 2-M10 | 55N | 55+0.060+0.030 | 16+0.043 | 59.3+0.30 | 2-M10 |
| 56P | 56 +0.030 | 16－0.061－0.018 | 60.3+0.30 | 2-M10 | - | - | - | - | - |
| 60P | 60 +0.030 | 18－0.061－0.018 | 64.4+0.30 | 2-M10 | 60N | 60+0.060+0.030 | 18+0.043 | 64.4+0.30 | 2-M10 |
※Positions of set screws and keyways are not on the same plane.
※Set screws are included with the product.
※Positioning precision for keyway milling is determined by sight.
※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.
※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.
【Set screw position】
| Model | Distance from edge [mm] |
|---|---|
| SFS-05 | 7 |
| SFS-06 | 9 |
| SFS-08 | 10 |
| SFS-09 | 10 |
| SFS-10 | 12 |
| SFS-12 | 12 |
| SFS-14 | 15 |
SFS-□G Types
[Specifications]
| Model | Rated torque［N・m］ | Misalignment | Max. rotation speed［min-1］ | Torsional stiffness［N・m/rad］ | Axial stiffness［N/mm］ | Moment of inertia［kg･m2］ | Mass［kg］ | ||
|---|---|---|---|---|---|---|---|---|---|
| Parallel［mm］ | Angular［°］ | Axial［mm］ | |||||||
| SFS-05G | 20 | 0.5 | 1(On one side) | ±1.2 | 20000 | 8000 | 21 | 0.20×10-3 | 0.50 |
| SFS-06G | 40 | 0.5 | 1(On one side) | ±1.6 | 16000 | 14000 | 22 | 0.55×10-3 | 0.90 |
| SFS-08G | 80 | 0.5 | 1(On one side) | ±2.0 | 13000 | 41000 | 30 | 1.50×10-3 | 1.70 |
| SFS-09G | 180 | 0.6 | 1(On one side) | ±2.4 | 12000 | 85000 | 61 | 2.90×10-3 | 2.40 |
| SFS-10G | 250 | 0.6 | 1(On one side) | ±2.8 | 10000 | 125000 | 80 | 4.60×10-3 | 3.30 |
| SFS-12G | 450 | 0.8 | 1(On one side) | ±3.2 | 8000 | 215000 | 98 | 11.80×10-3 | 5.80 |
| SFS-14G | 800 | 0.9 | 1(On one side) | ±3.6 | 7000 | 390000 | 156 | 21.20×10-3 | 8.60 |
*Max. rotation speed does not take into account dynamic balance.
*The moment of inertia and mass are measured for the maximum bore diameter.
[Dimensions]
Unit [mm]
| Model | d1・d2 | D | N | L | LF | LS | S | F | K | M | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pilot bore | Min. | Max. | ||||||||||
| SFS-05G | 7 | 8 | 20 | 56 | 32 | 74 | 20 | 24 | 5 | 11 | 24 | 8-M5×22 |
| SFS-06G | 7 | 8 | 25 | 68 | 40 | 86 | 25 | 24 | 6 | 10 | 30 | 8-M6×25 |
| SFS-08G | 10 | 11 | 35 | 82 | 54 | 98 | 30 | 26 | 6 | 11 | 38 | 8-M6×29 |
| SFS-09G | 10 | 11 | 38 | 94 | 58 | 106 | 30 | 30 | 8 | 21 | 42 | 8-M8×36 |
| SFS-10G | 15 | 16 | 42 | 104 | 68 | 120 | 35 | 30 | 10 | 16 | 48 | 8-M8×36 |
| SFS-12G | 18 | 19 | 50 | 126 | 78 | 140 | 40 | 38 | 11 | 23 | 54 | 8-M10×45 |
| SFS-14G | 20 | 22 | 60 | 144 | 88 | 160 | 45 | 46 | 12 | 31 | 61 | 8-M12×54 |
*Pilot bores are to be drilled into the part.
*If you require a product with an LS dimension that exceeds those above, contact Miki Pulley with your required dimension [mm]. Please contact Miki Pulley for assistance if the LS dimension is less than those
*The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.
[Standard bore diameter]
| Model | Standard bore diameter d1・d2 [mm] | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 9 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 56 | 60 | |
| SFS-05G | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||
| SFS-06G | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-08G | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
| SFS-09G | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||
| SFS-10G | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-12G | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-14G | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information.
【Standard Hole-Drilling Standards】
Unit [mm]
| Models compliant with the old JIS standard (class 2) JIS B 1301 1959 | Models compliant with the new JIS standard (H9) JIS B 1301 1996 | Models compliant with the new JIS standard (JS9) JIS B 1301 1996 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7,H8 | ToleranceE9 | － | － | ToleranceH7,H8 | ToleranceH9 | － | － | ToleranceH7,H8 | ToleranceJS9 | － | － | |||
| 8 | 8+0.0220 | － | － | 2-M4 | 8H | 8+0.0220 | 3+0.0250 | 9.4+0.30 | 2-M4 | 8J | 8+0.0220 | 3±0.0125 | 9.4+0.30 | 2-M4 |
| 9 | 9+0.0220 | － | － | 2-M4 | 9H | 9+0.0220 | 3+0.0250 | 10.4+0.30 | 2-M4 | 9J | 9+0.0220 | 3±0.0125 | 10.4+0.30 | 2-M4 |
| 10 | 10+0.0220 | － | － | 2-M4 | 10H | 10+0.0220 | 3+0.0250 | 11.4+0.30 | 2-M4 | 10J | 10+0.0220 | 3±0.0125 | 11.4+0.30 | 2-M4 |
| 11 | 11+0.0180 | － | － | 2-M4 | 11H | 11+0.0180 | 4+0.0300 | 12.8+0.30 | 2-M4 | 11J | 11+0.0180 | 4±0.0150 | 12.8+0.30 | 2-M4 |
| 12 | 12+0.0180 | 4+0.050+0.020 | 13.5+0.30 | 2-M4 | 12H | 12+0.0180 | 4+0.0300 | 13.8+0.30 | 2-M4 | 12J | 12+0.0180 | 4±0.0150 | 13.8+0.30 | 2-M4 |
| 14 | 14+0.0180 | 5+0.050+0.020 | 16+0.30 | 2-M4 | 14H | 14+0.0180 | 5+0.0300 | 16.3+0.30 | 2-M4 | 14J | 14+0.0180 | 5±0.0150 | 16.3+0.30 | 2-M4 |
| 15 | 15+0.0180 | 5+0.050+0.020 | 17+0.30 | 2-M4 | 15H | 15+0.0180 | 5+0.0300 | 17.3+0.30 | 2-M4 | 15J | 15+0.0180 | 5±0.0150 | 17.3+0.30 | 2-M4 |
| 16 | 16+0.0180 | 5+0.050+0.020 | 18+0.30 | 2-M4 | 16H | 16+0.0180 | 5+0.0300 | 18.3+0.30 | 2-M4 | 16J | 16+0.0180 | 5±0.0150 | 18.3+0.30 | 2-M4 |
| 17 | 17+0.0180 | 5+0.050+0.020 | 19+0.30 | 2-M4 | 17H | 17+0.0180 | 5+0.0300 | 19.3+0.30 | 2-M4 | 17J | 17+0.0180 | 5±0.0150 | 19.3+0.30 | 2-M4 |
| 18 | 18+0.0180 | 5+0.050+0.020 | 20+0.30 | 2-M4 | 18H | 18+0.0180 | 6+0.0300 | 20.8+0.30 | 2-M5 | 18J | 18+0.0180 | 6±0.0150 | 20.8+0.30 | 2-M5 |
| 19 | 19+0.0210 | 5+0.050+0.020 | 21+0.30 | 2-M4 | 19H | 19+0.0210 | 6+0.0300 | 21.8+0.30 | 2-M5 | 19J | 19+0.0210 | 6±0.0150 | 21.8+0.30 | 2-M5 |
| 20 | 20+0.0210 | 5+0.050+0.020 | 22+0.30 | 2-M4 | 20H | 20+0.0210 | 6+0.0300 | 22.8+0.30 | 2-M5 | 20J | 20+0.0210 | 6±0.0150 | 22.8+0.30 | 2-M5 |
| 22 | 22+0.0210 | 7+0.061+0.025 | 25+0.30 | 2-M6 | 22H | 22+0.0210 | 6+0.0300 | 24.8+0.30 | 2-M5 | 22J | 22+0.0210 | 6±0.0150 | 24.8+0.30 | 2-M5 |
| 24 | 24+0.0210 | 7+0.061+0.025 | 27+0.30 | 2-M6 | 24H | 24+0.0210 | 8+0.0360 | 27.3+0.30 | 2-M6 | 24J | 24+0.0210 | 8±0.0180 | 27.3+0.30 | 2-M6 |
| 25 | 25+0.0210 | 7+0.061+0.025 | 28+0.30 | 2-M6 | 25H | 25+0.0210 | 8+0.0360 | 28.3+0.30 | 2-M6 | 25J | 25+0.0210 | 8±0.0180 | 28.3+0.30 | 2-M6 |
| 28 | 28+0.0210 | 7+0.061+0.025 | 31+0.30 | 2-M6 | 28H | 28+0.0210 | 8+0.0360 | 31.3+0.30 | 2-M6 | 28J | 28+0.0210 | 8±0.0180 | 31.3+0.30 | 2-M6 |
| 30 | 30+0.0210 | 7+0.061+0.025 | 33+0.30 | 2-M6 | 30H | 30+0.0210 | 8+0.0360 | 33.3+0.30 | 2-M6 | 30J | 30+0.0210 | 8±0.0180 | 33.3+0.30 | 2-M6 |
| 32 | 32+0.0250 | 10+0.061+0.025 | 35.5+0.30 | 2-M8 | 32H | 32+0.0250 | 10+0.0360 | 35.3+0.30 | 2-M8 | 32J | 32+0.0250 | 10±0.0180 | 35.3+0.30 | 2-M8 |
| 35 | 35+0.0250 | 10+0.061+0.025 | 38.5+0.30 | 2-M8 | 35H | 35+0.0250 | 10+0.0360 | 38.3+0.30 | 2-M8 | 35J | 35+0.0250 | 10±0.0180 | 38.3+0.30 | 2-M8 |
| 38 | 38+0.0250 | 10+0.061+0.025 | 41.5+0.30 | 2-M8 | 38H | 38+0.0250 | 10+0.0360 | 41.3+0.30 | 2-M8 | 38J | 38+0.0250 | 10±0.0180 | 41.3+0.30 | 2-M8 |
| 40 | 40+0.0250 | 10+0.061+0.025 | 43.5+0.30 | 2-M8 | 40H | 40+0.0250 | 12+0.0430 | 43.3+0.30 | 2-M8 | 40J | 40+0.0250 | 12±0.0215 | 43.3+0.30 | 2-M8 |
| 42 | 42+0.0250 | 12+0.075+0.032 | 45.5+0.30 | 2-M8 | 42H | 42+0.0250 | 12+0.0430 | 45.3+0.30 | 2-M8 | 42J | 42+0.0250 | 12±0.0215 | 45.3+0.30 | 2-M8 |
| 45 | 45+0.0250 | 12+0.075+0.032 | 48.5+0.30 | 2-M8 | 45H | 45+0.0250 | 14+0.0430 | 48.8+0.30 | 2-M10 | 45J | 45+0.0250 | 14±0.0215 | 48.8+0.30 | 2-M10 |
| 48 | 48+0.0250 | 12+0.075+0.032 | 51.5+0.30 | 2-M8 | 48H | 48+0.0250 | 14+0.0430 | 51.8+0.30 | 2-M10 | 48J | 48+0.0250 | 14±0.0215 | 51.8+0.30 | 2-M10 |
| 50 | 50+0.0250 | 12+0.075+0.032 | 53.5+0.30 | 2-M8 | 50H | 50+0.0250 | 14+0.0430 | 53.8+0.30 | 2-M10 | 50J | 50+0.0250 | 14±0.0215 | 53.8+0.30 | 2-M10 |
| 55 | 55+0.0300 | 15+0.075+0.032 | 60+0.30 | 2-M10 | 55H | 55+0.0300 | 16+0.0430 | 59.3+0.30 | 2-M10 | 55J | 55+0.0300 | 16±0.0215 | 59.3+0.30 | 2-M10 |
| 56 | 56+0.0300 | 15+0.075+0.032 | 61+0.30 | 2-M10 | 56H | 56+0.0300 | 16+0.0430 | 60.3+0.30 | 2-M10 | 56J | 56+0.0300 | 16±0.0215 | 60.3+0.30 | 2-M10 |
| 60 | 60+0.0300 | 15+0.075+0.032 | 65+0.30 | 2-M10 | 60H | 60+0.0300 | 18+0.0430 | 64.4+0.30 | 2-M10 | 60J | 60+0.0300 | 18±0.0215 | 64.4+0.30 | 2-M10 |
| Models compliant with the new JIS standard (P9) JIS B 1301 1996 | Models compliant with the motor standard JIS C 4210 2001 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7，H8 | ToleranceP9 | + 0.30 0 | － | － | ToleranceG7，F7 | ToleranceH9 | － | ||
| 8P | 8 +0.022 | 3－0.006－0.031 | 9.4+0.30 | 2-M4 | - | - | - | - | - |
| 9P | 9 +0.022 | 3－0.006－0.031 | 10.4+0.30 | 2-M4 | - | - | - | - | - |
| 10P | 10 +0.022 | 3－0.006－0.031 | 11.4+0.30 | 2-M4 | - | - | - | - | - |
| 11P | 11+0.018 | 4－0.042－0.012 | 12.8+0.30 | 2-M4 | - | - | - | - | - |
| 12P | 12 +0.018 | 4－0.042－0.012 | 13.8+0.30 | 2-M4 | - | - | - | - | - |
| 14P | 14+0.018 | 5－0.042－0.012 | 16.3+0.30 | 2-M4 | 14N | 14+0.024+0.006 | 5+0.030 | 16.3+0.30 | 2-M4 |
| 15P | 15+0.018 | 5－0.042－0.012 | 17.3+0.30 | 2-M4 | - | - | - | - | - |
| 16P | 16+0.018 | 5－0.042－0.012 | 18.3+0.30 | 2-M4 | - | - | - | - | - |
| 17P | 17+0.018 | 5－0.042－0.012 | 19.3+0.30 | 2-M4 | - | - | - | - | - |
| 18P | 18+0.018 | 6－0.042－0.012 | 20.8+0.30 | 2-M5 | - | - | - | - | - |
| 19P | 19 +0.021 | 6－0.042－0.012 | 21.8+0.30 | 2-M5 | 19N | 19+0.028+0.007 | 6+0.030 | 21.8+0.30 | 2-M5 |
| 20P | 20 +0.021 | 6－0.042－0.012 | 22.8+0.30 | 2-M5 | - | - | - | - | - |
| 22P | 22 +0.021 | 6－0.042－0.012 | 24.8+0.30 | 2-M5 | - | - | - | - | - |
| 24P | 24 +0.021 | 8－0.051－0.015 | 27.3+0.30 | 2-M6 | 24N | 24+0.028+0.007 | 8+0.036 | 27.3+0.30 | 2-M6 |
| 25P | 25 +0.021 | 8－0.051－0.015 | 28.3+0.30 | 2-M6 | - | - | - | - | - |
| 28P | 28 +0.021 | 8－0.051－0.015 | 31.3+0.30 | 2-M6 | 28N | 28+0.028+0.007 | 8+0.036 | 31.3+0.30 | 2-M6 |
| 30P | 30 +0.021 | 8－0.051－0.015 | 33.3+0.30 | 2-M6 | - | - | - | - | - |
| 32P | 32 +0.025 | 10－0.051－0.015 | 35.3+0.30 | 2-M8 | - | - | - | ||
| 35P | 35 +0.025 | 10－0.051－0.015 | 38.3+0.30 | 2-M8 | - | - | - | - | |
| 38P | 38 +0.025 | 10－0.051－0.015 | 41.3+0.30 | 2-M8 | 38N | 38+0.050+0.025 | 10+0.036 | 41.3+0.30 | 2-M8 |
| 40P | 40 +0.025 | 12－0.061－0.018 | 43.3+0.30 | 2-M8 | - | - | - | - | - |
| 42P | 42 +0.025 | 12－0.061－0.018 | 45.3+0.30 | 2-M8 | 42N | 42+0.050+0.025 | 12+0.043 | 45.3+0.30 | 2-M8 |
| 45P | 45 +0.025 | 14－0.061－0.018 | 48.8+0.30 | 2-M10 | - | - | - | - | - |
| 48P | 48 +0.025 | 14－0.061－0.018 | 51.8+0.30 | 2-M10 | 48N | 48+0.050+0.025 | 14+0.043 | 51.8+0.30 | 2-M10 |
| 50P | 50 +0.025 | 14－0.061－0.018 | 53.8+0.30 | 2-M10 | - | - | - | - | - |
| 55P | 55 +0.030 | 16－0.061－0.018 | 59.3+0.30 | 2-M10 | 55N | 55+0.060+0.030 | 16+0.043 | 59.3+0.30 | 2-M10 |
| 56P | 56 +0.030 | 16－0.061－0.018 | 60.3+0.30 | 2-M10 | - | - | - | - | - |
| 60P | 60 +0.030 | 18－0.061－0.018 | 64.4+0.30 | 2-M10 | 60N | 60+0.060+0.030 | 18+0.043 | 64.4+0.30 | 2-M10 |
※Positions of set screws and keyways are not on the same plane.
※Set screws are included with the product.
※Positioning precision for keyway milling is determined by sight.
※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.
※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.
【Set screw position】
| Model | Distance from edge [mm] |
|---|---|
| SFS-05 | 7 |
| SFS-06 | 9 |
| SFS-08 | 10 |
| SFS-09 | 10 |
| SFS-10 | 12 |
| SFS-12 | 12 |
| SFS-14 | 15 |
SFS-□G (C) Types
[Specifications]
[Dimensions]
Unit [mm]
| Model | d1・d2 | D | N | L | LF | LS | S | F | K | M | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pilot bore | Min. | Max. | ||||||||||
| SFS-05G-C | 7 | 8 | 20 | 56 | 32 | 74 | 20 | 24 | 5 | 11 | 24 | 8-M5×22 |
| SFS-06G-C | 7 | 8 | 25 | 68 | 40 | 86 | 25 | 24 | 6 | 10 | 30 | 8-M6×25 |
| SFS-08G-C | 10 | 11 | 35 | 82 | 54 | 98 | 30 | 26 | 6 | 11 | 38 | 8-M6×29 |
| SFS-09G-C | 10 | 11 | 38 | 94 | 58 | 106 | 30 | 30 | 8 | 21 | 42 | 8-M8×36 |
| SFS-10G-C | 15 | 16 | 42 | 104 | 68 | 120 | 35 | 30 | 10 | 16 | 48 | 8-M8×36 |
| SFS-12G-C | 18 | 19 | 50 | 126 | 78 | 140 | 40 | 38 | 11 | 23 | 54 | 8-M10×45 |
| SFS-14G-C | 20 | 22 | 60 | 144 | 88 | 160 | 45 | 46 | 12 | 31 | 61 | 8-M12×54 |
* If you require a product with an LS dimension that exceeds those above, contact Miki Pulley with your required dimension [mm]. Please contact Miki Pulley for assistance if the LS dimension is less than thoseabove or if LS ≧ 1000.
* Please note that when the LS dimension exceeds 100 mm with the electroless nickel plating specification (SFS- □ G-C), the insertion length of the shaft cannot exceed the LS dimension.
* The nominal diameter of the reamer bolt M is equal to the quantity minus the nominal diameter of the screw threads times the nominal length.
[Standard bore diameter]
| Model | Standard bore diameter d1・d2 [mm] | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 9 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 56 | 60 | |
| SFS-05G-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||
| SFS-06G-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-08G-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
| SFS-09G-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||
| SFS-10G-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-12G-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||
| SFS-14G-C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||
* Bore diameters marked with ● are supported as standard bore diameter. See the standard hole-drilling standards for information
【Standard Hole-Drilling Standards】
Unit [mm]
| Models compliant with the old JIS standard (class 2) JIS B 1301 1959 | Models compliant with the new JIS standard (H9) JIS B 1301 1996 | Models compliant with the new JIS standard (JS9) JIS B 1301 1996 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway height（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7,H8 | ToleranceE9 | － | － | ToleranceH7,H8 | ToleranceH9 | － | － | ToleranceH7,H8 | ToleranceJS9 | － | － | |||
| 8 | 8+0.0220 | － | － | 2-M4 | 8H | 8+0.0220 | 3+0.0250 | 9.4+0.30 | 2-M4 | 8J | 8+0.0220 | 3±0.0125 | 9.4+0.30 | 2-M4 |
| 9 | 9+0.0220 | － | － | 2-M4 | 9H | 9+0.0220 | 3+0.0250 | 10.4+0.30 | 2-M4 | 9J | 9+0.0220 | 3±0.0125 | 10.4+0.30 | 2-M4 |
| 10 | 10+0.0220 | － | － | 2-M4 | 10H | 10+0.0220 | 3+0.0250 | 11.4+0.30 | 2-M4 | 10J | 10+0.0220 | 3±0.0125 | 11.4+0.30 | 2-M4 |
| 11 | 11+0.0180 | － | － | 2-M4 | 11H | 11+0.0180 | 4+0.0300 | 12.8+0.30 | 2-M4 | 11J | 11+0.0180 | 4±0.0150 | 12.8+0.30 | 2-M4 |
| 12 | 12+0.0180 | 4+0.050+0.020 | 13.5+0.30 | 2-M4 | 12H | 12+0.0180 | 4+0.0300 | 13.8+0.30 | 2-M4 | 12J | 12+0.0180 | 4±0.0150 | 13.8+0.30 | 2-M4 |
| 14 | 14+0.0180 | 5+0.050+0.020 | 16+0.30 | 2-M4 | 14H | 14+0.0180 | 5+0.0300 | 16.3+0.30 | 2-M4 | 14J | 14+0.0180 | 5±0.0150 | 16.3+0.30 | 2-M4 |
| 15 | 15+0.0180 | 5+0.050+0.020 | 17+0.30 | 2-M4 | 15H | 15+0.0180 | 5+0.0300 | 17.3+0.30 | 2-M4 | 15J | 15+0.0180 | 5±0.0150 | 17.3+0.30 | 2-M4 |
| 16 | 16+0.0180 | 5+0.050+0.020 | 18+0.30 | 2-M4 | 16H | 16+0.0180 | 5+0.0300 | 18.3+0.30 | 2-M4 | 16J | 16+0.0180 | 5±0.0150 | 18.3+0.30 | 2-M4 |
| 17 | 17+0.0180 | 5+0.050+0.020 | 19+0.30 | 2-M4 | 17H | 17+0.0180 | 5+0.0300 | 19.3+0.30 | 2-M4 | 17J | 17+0.0180 | 5±0.0150 | 19.3+0.30 | 2-M4 |
| 18 | 18+0.0180 | 5+0.050+0.020 | 20+0.30 | 2-M4 | 18H | 18+0.0180 | 6+0.0300 | 20.8+0.30 | 2-M5 | 18J | 18+0.0180 | 6±0.0150 | 20.8+0.30 | 2-M5 |
| 19 | 19+0.0210 | 5+0.050+0.020 | 21+0.30 | 2-M4 | 19H | 19+0.0210 | 6+0.0300 | 21.8+0.30 | 2-M5 | 19J | 19+0.0210 | 6±0.0150 | 21.8+0.30 | 2-M5 |
| 20 | 20+0.0210 | 5+0.050+0.020 | 22+0.30 | 2-M4 | 20H | 20+0.0210 | 6+0.0300 | 22.8+0.30 | 2-M5 | 20J | 20+0.0210 | 6±0.0150 | 22.8+0.30 | 2-M5 |
| 22 | 22+0.0210 | 7+0.061+0.025 | 25+0.30 | 2-M6 | 22H | 22+0.0210 | 6+0.0300 | 24.8+0.30 | 2-M5 | 22J | 22+0.0210 | 6±0.0150 | 24.8+0.30 | 2-M5 |
| 24 | 24+0.0210 | 7+0.061+0.025 | 27+0.30 | 2-M6 | 24H | 24+0.0210 | 8+0.0360 | 27.3+0.30 | 2-M6 | 24J | 24+0.0210 | 8±0.0180 | 27.3+0.30 | 2-M6 |
| 25 | 25+0.0210 | 7+0.061+0.025 | 28+0.30 | 2-M6 | 25H | 25+0.0210 | 8+0.0360 | 28.3+0.30 | 2-M6 | 25J | 25+0.0210 | 8±0.0180 | 28.3+0.30 | 2-M6 |
| 28 | 28+0.0210 | 7+0.061+0.025 | 31+0.30 | 2-M6 | 28H | 28+0.0210 | 8+0.0360 | 31.3+0.30 | 2-M6 | 28J | 28+0.0210 | 8±0.0180 | 31.3+0.30 | 2-M6 |
| 30 | 30+0.0210 | 7+0.061+0.025 | 33+0.30 | 2-M6 | 30H | 30+0.0210 | 8+0.0360 | 33.3+0.30 | 2-M6 | 30J | 30+0.0210 | 8±0.0180 | 33.3+0.30 | 2-M6 |
| 32 | 32+0.0250 | 10+0.061+0.025 | 35.5+0.30 | 2-M8 | 32H | 32+0.0250 | 10+0.0360 | 35.3+0.30 | 2-M8 | 32J | 32+0.0250 | 10±0.0180 | 35.3+0.30 | 2-M8 |
| 35 | 35+0.0250 | 10+0.061+0.025 | 38.5+0.30 | 2-M8 | 35H | 35+0.0250 | 10+0.0360 | 38.3+0.30 | 2-M8 | 35J | 35+0.0250 | 10±0.0180 | 38.3+0.30 | 2-M8 |
| 38 | 38+0.0250 | 10+0.061+0.025 | 41.5+0.30 | 2-M8 | 38H | 38+0.0250 | 10+0.0360 | 41.3+0.30 | 2-M8 | 38J | 38+0.0250 | 10±0.0180 | 41.3+0.30 | 2-M8 |
| 40 | 40+0.0250 | 10+0.061+0.025 | 43.5+0.30 | 2-M8 | 40H | 40+0.0250 | 12+0.0430 | 43.3+0.30 | 2-M8 | 40J | 40+0.0250 | 12±0.0215 | 43.3+0.30 | 2-M8 |
| 42 | 42+0.0250 | 12+0.075+0.032 | 45.5+0.30 | 2-M8 | 42H | 42+0.0250 | 12+0.0430 | 45.3+0.30 | 2-M8 | 42J | 42+0.0250 | 12±0.0215 | 45.3+0.30 | 2-M8 |
| 45 | 45+0.0250 | 12+0.075+0.032 | 48.5+0.30 | 2-M8 | 45H | 45+0.0250 | 14+0.0430 | 48.8+0.30 | 2-M10 | 45J | 45+0.0250 | 14±0.0215 | 48.8+0.30 | 2-M10 |
| 48 | 48+0.0250 | 12+0.075+0.032 | 51.5+0.30 | 2-M8 | 48H | 48+0.0250 | 14+0.0430 | 51.8+0.30 | 2-M10 | 48J | 48+0.0250 | 14±0.0215 | 51.8+0.30 | 2-M10 |
| 50 | 50+0.0250 | 12+0.075+0.032 | 53.5+0.30 | 2-M8 | 50H | 50+0.0250 | 14+0.0430 | 53.8+0.30 | 2-M10 | 50J | 50+0.0250 | 14±0.0215 | 53.8+0.30 | 2-M10 |
| 55 | 55+0.0300 | 15+0.075+0.032 | 60+0.30 | 2-M10 | 55H | 55+0.0300 | 16+0.0430 | 59.3+0.30 | 2-M10 | 55J | 55+0.0300 | 16±0.0215 | 59.3+0.30 | 2-M10 |
| 56 | 56+0.0300 | 15+0.075+0.032 | 61+0.30 | 2-M10 | 56H | 56+0.0300 | 16+0.0430 | 60.3+0.30 | 2-M10 | 56J | 56+0.0300 | 16±0.0215 | 60.3+0.30 | 2-M10 |
| 60 | 60+0.0300 | 15+0.075+0.032 | 65+0.30 | 2-M10 | 60H | 60+0.0300 | 18+0.0430 | 64.4+0.30 | 2-M10 | 60J | 60+0.0300 | 18±0.0215 | 64.4+0.30 | 2-M10 |
| Models compliant with the new JIS standard (P9) JIS B 1301 1996 | Models compliant with the motor standard JIS C 4210 2001 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） | Nominal bore diameter | Bore diameter（d1・d2） | Keyway width（W1･W2） | Keyway height（T1･T2） | Set screw hole（M） |
| ToleranceH7，H8 | ToleranceP9 | + 0.30 0 | － | － | ToleranceG7，F7 | ToleranceH9 | － | ||
| 8P | 8 +0.022 | 3－0.006－0.031 | 9.4+0.30 | 2-M4 | - | - | - | - | - |
| 9P | 9 +0.022 | 3－0.006－0.031 | 10.4+0.30 | 2-M4 | - | - | - | - | - |
| 10P | 10 +0.022 | 3－0.006－0.031 | 11.4+0.30 | 2-M4 | - | - | - | - | - |
| 11P | 11+0.018 | 4－0.042－0.012 | 12.8+0.30 | 2-M4 | - | - | - | - | - |
| 12P | 12 +0.018 | 4－0.042－0.012 | 13.8+0.30 | 2-M4 | - | - | - | - | - |
| 14P | 14+0.018 | 5－0.042－0.012 | 16.3+0.30 | 2-M4 | 14N | 14+0.024+0.006 | 5+0.030 | 16.3+0.30 | 2-M4 |
| 15P | 15+0.018 | 5－0.042－0.012 | 17.3+0.30 | 2-M4 | - | - | - | - | - |
| 16P | 16+0.018 | 5－0.042－0.012 | 18.3+0.30 | 2-M4 | - | - | - | - | - |
| 17P | 17+0.018 | 5－0.042－0.012 | 19.3+0.30 | 2-M4 | - | - | - | - | - |
| 18P | 18+0.018 | 6－0.042－0.012 | 20.8+0.30 | 2-M5 | - | - | - | - | - |
| 19P | 19 +0.021 | 6－0.042－0.012 | 21.8+0.30 | 2-M5 | 19N | 19+0.028+0.007 | 6+0.030 | 21.8+0.30 | 2-M5 |
| 20P | 20 +0.021 | 6－0.042－0.012 | 22.8+0.30 | 2-M5 | - | - | - | - | - |
| 22P | 22 +0.021 | 6－0.042－0.012 | 24.8+0.30 | 2-M5 | - | - | - | - | - |
| 24P | 24 +0.021 | 8－0.051－0.015 | 27.3+0.30 | 2-M6 | 24N | 24+0.028+0.007 | 8+0.036 | 27.3+0.30 | 2-M6 |
| 25P | 25 +0.021 | 8－0.051－0.015 | 28.3+0.30 | 2-M6 | - | - | - | - | - |
| 28P | 28 +0.021 | 8－0.051－0.015 | 31.3+0.30 | 2-M6 | 28N | 28+0.028+0.007 | 8+0.036 | 31.3+0.30 | 2-M6 |
| 30P | 30 +0.021 | 8－0.051－0.015 | 33.3+0.30 | 2-M6 | - | - | - | - | - |
| 32P | 32 +0.025 | 10－0.051－0.015 | 35.3+0.30 | 2-M8 | - | - | - | ||
| 35P | 35 +0.025 | 10－0.051－0.015 | 38.3+0.30 | 2-M8 | - | - | - | - | |
| 38P | 38 +0.025 | 10－0.051－0.015 | 41.3+0.30 | 2-M8 | 38N | 38+0.050+0.025 | 10+0.036 | 41.3+0.30 | 2-M8 |
| 40P | 40 +0.025 | 12－0.061－0.018 | 43.3+0.30 | 2-M8 | - | - | - | - | - |
| 42P | 42 +0.025 | 12－0.061－0.018 | 45.3+0.30 | 2-M8 | 42N | 42+0.050+0.025 | 12+0.043 | 45.3+0.30 | 2-M8 |
| 45P | 45 +0.025 | 14－0.061－0.018 | 48.8+0.30 | 2-M10 | - | - | - | - | - |
| 48P | 48 +0.025 | 14－0.061－0.018 | 51.8+0.30 | 2-M10 | 48N | 48+0.050+0.025 | 14+0.043 | 51.8+0.30 | 2-M10 |
| 50P | 50 +0.025 | 14－0.061－0.018 | 53.8+0.30 | 2-M10 | - | - | - | - | - |
| 55P | 55 +0.030 | 16－0.061－0.018 | 59.3+0.30 | 2-M10 | 55N | 55+0.060+0.030 | 16+0.043 | 59.3+0.30 | 2-M10 |
| 56P | 56 +0.030 | 16－0.061－0.018 | 60.3+0.30 | 2-M10 | - | - | - | - | - |
| 60P | 60 +0.030 | 18－0.061－0.018 | 64.4+0.30 | 2-M10 | 60N | 60+0.060+0.030 | 18+0.043 | 64.4+0.30 | 2-M10 |
※Positions of set screws and keyways are not on the same plane.
※Set screws are included with the product.
※Positioning precision for keyway milling is determined by sight.
※Contact Miki Pulley when the keyway requires a positioning precision for a particular flange hub.
※Consult the technical documentation at the end of this volume for standard dimensions for bore drilling other than those given here.
【Set screw position】
| Model | Distance from edge [mm] |
|---|---|
| SFS-05 | 7 |
| SFS-06 | 9 |
| SFS-08 | 10 |
| SFS-09 | 10 |
| SFS-10 | 12 |
| SFS-12 | 12 |
| SFS-14 | 15 |
Lineup
Structure and Materials
SFS S
SFS S-□M-□M
SFS S-□M-□C
SFS S C
SFS W
SFS G
Related Product
Basic Specifications
- Max. nominal torque 2500 N･m
- Pilot-bore additional processing range 13 mm to 120 mm
- Operating temperature -40℃ to 120℃
Basic Specifications
- Max. rated torque 25 N･m
- Bore ranges 6 mm to 22 mm
- Operating temperature -30℃ to 100℃
