ETP BUSH

Original hydraulic system connects with a single bolt

Our original hydraulic system connects with a single bolt. The shaft and hub are coupled by friction without use of keys, so the shortcomings and difficulties of key couplings are solved all at once. Its construction is simple, mounting and removal are easy, and it can accurately position and index. This greatly reduces work from the design stage to assembly, calibration, and maintenance. ,It can be mounted using a single bolt, and many models are available, including the ETP-T, which meets a concentricity of 0.006 mm.

* ETP is a registered trademark of ETP Transmission AB.

Application

Machine tools/Pumps/Molding machines/Printing machines/Palletizing robots/Tools and jigs

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ETP-E Plus Models

The axle and hub are connected by a single bolt, so installation can be done quickly and easily. Moreover, the concentricity is an excellent 0.02mm, so it is perfect for places where high precision is required and it will be frequently removed and installed. It is built to tighten radially, so it does not need a lot of space to operate.

Bore diameter
15 mm to 100 mm
Max. rated torque
17000 N･m
Concentricity
0.02 mm

ETP-T Models

The shaft and hub can be easily and quickly coupled using a single pressure screw.This facilitates assembly of equipment that requires positioning in the rotation and axial directions. It is also effective in locations requiring repeated mounting and removal. The concentricity of the shaft and hub is 0.006 mm, so ultra-precise positioning is possible as well.

Bore diameter
15 mm to 100 mm
Max. rated torque
18000 N･m
Concentricity
0.006 mm

ETP-A Models

Shaft and hub can be easily and quickly coupled by tightening a clamping bolt located on the flange surface.Fastening is accomplished using fewer bolts than with mechanical systems, and there is no slotting as with mechanical systems, so high-precision coupling with a concentricity of 0.05 mm is possible.

Bore diameter
15 mm to 100 mm
Max. rated torque
15500 N･m
Concentricity
0.05 mm

ETP-H Models

Shaft and hub are strongly coupled by pumping oil into the sleeve under pressure to move the wedge of the built-in taper piston.The oil used for coupling is only necessary for moving the piston, so after coupling is achieved, the pressure is released and the taper piston is held in place by the wedge effect.

Bore diameter
50 mm to 220 mm
Max. rated torque
273000 N･m
Concentricity
0.02 mm

Printing Presses

Product Models Used SFC + ETP

ETP bushing is used to fix the feed roll. The roll and the shaft can be fixed easily and accurately, and the size in the direction of the shaft can be reduced.

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Plastic Bottle Molding Machines

Product Models Used ETP-T

ETP bushing is used to connect the mold fixing shaft and the shaft of the index feeding unit. Connection with one bolt substantially reduces the adjustment time.

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Food Processing Machines

Product Models Used ETP-E R

Stainless ETP bushing is used in a food processing machine. It can be used in sections that need to be washed or are exposed to water.

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Filling Machines

Product Models Used ETP-T + PSL

ETP bushings are used to position alignment tables and alignment screws.

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Bookbinding Machines

Product Models Used ETP-A

ETP-A model parts are used to secure timing pulleys in place.

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Belt Systems

Product Models Used ETP-A C

ETP-A model parts are used to position complicated timing belt systems.

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Applications for Slitter Knife Holders

Applications for Models that are Integrated with the Gear

This is a hydraulic slitter knife holder. This holder is used to position the rotating knife to cut tin, iron, aluminum plates, or paper sheet in any position. Petitioning in the shaft direction can be performed arbitrarily with 1 bolt. For the angular deflection caused by detachment and attachment, a micron meter(μm) level repeatable accuracy can be maintained.

Including the gear as part of the machine structure ensures an extremely precise level of bore concentricity and makes it easier to position parts along the shaft and engagement directions.

Accommodating Different Sleeve Lengths to Meet Specific Requirements

Applications for Retaining Jigs

The length of the sleeve can be made shorter than that on standard models as needed to meet specific requirements for accommodating parts with thin counter mounting hubs.

Placing the retaining jig on a workstand or similar stand to use as a parts holder during assembly and machining work enables work to be performed more stably. Use of a retaining jig also allows the part retaining position to be reproduced at an extremely high level.

Please let me know about the durability of the ETP bushings.

If the rated torque is cyclically applied to the ETP bushing, it can withstand about 500,000 cycles in terms of fatigue life. If 75% of the rated torque is applied, it can withstand an unlimited number of cycles in terms of fatigue life.

Can I use the ETP bushings for the shaft and hub with keyways in them?

You can use the ETP bushing by completely filling the keyway with epoxy putty for metals and then shaping it.
If you use the device with keyways on the shaft and hub, the sleeve may be deformed and the device may become unable to be detached and attached again.

Can I use the ETP bushing when the shaft and hub do not overlap the entire sleeve length?: Please select a short sleeve so that the shaft and the hub overlap the entire sleeve length, or please consult with us. If there is a part of the sleeve that does not contact the shaft and hub, the deformation of that part of the sleeve is not controlled and the amount of deformation increases, so the sleeve will be deformed and enough friction force will not be able to be obtained. As a result, the specified value cannot be met.

Can the rated torque be transmitted even if thrust load is applied?: The specified rated torque and rated thrust are the maximum rated values when they are applied independently. If the torque and thrust are applied at the same time, obtain the combined load and check that it is less than the rated torque.

If an ETP bushing slips once, can it be reused?: Whether or not it can be reused depends on the degree of slip. If the degree of slip is small, it can be reused. However, if you reuse it, you need to check it to make sure there is no scratch on the surface of the ETP bushing, shaft, and hub, and there is no deformation on the ETP bushing main body. And, if you reuse it, you need to remove the cause of the slip.