SRG Models

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Features of SRG Models

These are rigid couplings with ultra-high torsional stiffness that were developed for servo motor applications.Unlike flexible couplings, they have no element to absorb differences between the centers of the two shafts, so they have very high torsional stiffness. Since the outer diameter relative to torque can be reduced compared to flexible couplings, smaller couplings can be used, which helps reduce the moment of inertia.

Through-bolt construction

By using a through-bolt construction for the sleeve and hub on one side, the drive shaft and driven shaft can be engaged simply by tightening the pressure bolt on one side.

Taper adapter

Allows coupling via friction when an optional taper adapter is mounted on the tapered shaft of a servo motor.

Clamp type

A clamp-type rigid coupling can also be manufactured.

Model	d1, d2 ［mm］	Rated torque ［N・m］ compared to the standard bore diameters, d1 and d2 ［mm］	Max. rotation speed ［min^-1］	Torsional stiffness ［N・m/rad］	Moment of inertia ［kg・m²］	Mass ［kg］
Min.	Max.	16	17	18	19	20	22	24	25	28	30	32	35	36	38	40	42	45	48
SRG-050DS	16	22	90	100	110	120	130	140													15000	60000	0.16×10^-3	0.45
SRG-060DS	18	25			80	100	110	145	180	190											13000	115000	0.29×10^-3	0.67
SRG-070DS	22	35						150	200	220	290	340	390	460							12000	340000	0.55×10^-3	0.85
SRG-080DS	30	48										180	220	270	290	320	360	390	440	490	9500	1335000	1.21×10^-3	1.17

Model	Std. bore diameters d1, d2	D	L	LF	LP	C	H	M1	M2
SRG-050DS	16, 17, 18, 19, 20, 22	48	52.8	20	4	4.4	4-5.1	4-M6	2-M6
SRG-060DS	18, 19, 20, 22, 24, 25	54	62	24	4	5	4-5.1	4-M6	2-M6
SRG-070DS	22, 24, 25, 28, 30, 32, 35	64	62	24	4	5	4-5.1	6-M6	2-M6
SRG-080DS	30, 32, 35, 36, 38, 40, 42, 45, 48	78	63	25.5	4	4	4-5.1	6-M6	2-M6