Dimensions / Performance

Model	CAD	Size (±0.3mm)				Screw		Rated Torque (N·m)	Max. Torque (N·m)	Max. rpm (min-1)	Moment of Inertia (kg·m2)	Static Torsional Stiffness (N·m/rad)	Mass (g)	Permissible Misalignment
		D	L	L1	F	Size	Fastening Torque (N·m)							Angular (˚)	Parallel (mm)	End- play (mm)
SOHM-12C		11.9	16.5	5	2.5	M2	0.5	0.9	1.8	15,000	7.4 x 10-8	55	3.5	1.5	1	0.05
SOHM-16C		16	20.7	6.1	3	M2.6	1	1	2	13,000	2.6×10-7	65	7.4	1.5	1	0.1
SOHM-20C		20	21.9	6.1	2.9	M2.6	1	1.5	3	11,000	6.8×10-7	120	12	1.5	1.5	0.1
SOHM-25C		25.5	26.4	7.4	3.7	M3	1.7	2.5	5	10,000	2.2×10-6	200	23	1.5	2	0.1
SOHM-32C		32	34.9	9.5	4.7	M4	3.5	7	14	9,000	6.8×10-6	620	44	1.5	2.5	0.2
SOHM-43C		43	47	14	7	M5	8	12.5	25	8,000	3.0×10-5	1,200	114	1.5	3	0.15
SOHM-53C		53	53.1	16.9	8.3	M5	8	20	40	7,400	8.3×10-5	1,400	197	1.5	3.2	0.15
SOHM-57C		57	56.8	17.2	8.5	M6	13	34	68	6,000	1.2×10-4	2,600	232	1.5	3.5	0.2
SOHM-70C		73	75.5	25	12.3	M8	30	60	120	4,500	4.5×10-4	5,000	547	1.5	3.5	0.2

• The Moment of Inertia and Mass values are based on products with max. Inner diameter.
• Please modify rated/max. torque value with temperature correction factor when it’s higher than 30°C.
• Max. torque/rated torque is the value regarding to a coupling’s self-durability and is not related to slip-torque between the coupling bore and the shaft.

Standard Inner Diameter (ID)

Model	Standard Inner Diameter (d1, d2) (mm)
	3	4	4.5	5	6	6.35	8	9	9.525	10	11	12	14	15	16	18	19	20	22	24	25	25.4	28	30	32	35
SOHM-12C	●	●	●	●
SOHM-16C	●	●		●	●
SOHM-20C		●		●	●	●	●
SOHM-25C				●	●	●	●	●	●	●
SOHM-32C					●	●	●	●	●	●	●	●	●	●
SOHM-43C							●	●	●	●	●	●	●	●	●	●	●
SOHM-53C										●	●	●	●	●	●	●	●	●	●	●	●
SOHM-57C														●	●	●	●	●	●	●	●	●	●
SOHM-70C														●	●	●	●	●	●	●	●	●	●	●	●	●

• The recommended shaft tolerance is h7.
• Custom process (e.g. non-standard Inner diameter, special tolerance etc.) is also available upon a special request in prior to order placement.
• Keyway is available. (Optional)

Slip Torque

• The below table shows the actual permissible torque values when the slip torque value is lower than the coupling’s max. torque value.
• If the slip torque value is lower than the coupling’s max. torque value, please check and compare between the slip torque in the below table and the operating torque value of the connected motor. It is safer to size up the coupling or use a key/keyway when the slip torque value is lower than the motor’s operating torque.
• The below slip torque values may be subject to change according to different testing conditions. (e.g. shaft tolerance, surface roughness, surface treatment or acceleration/deceleration of driving shafts). On the other hand, the values could be affected when a different kind of fastening screw is used (body material or surface treatment). Therefore, we recommend you test under the same conditions before mounting.

Model	Max. Torque (N·m)	Slip Torque (N·m) by Inner Diameter (d1, d2)
		3	4	4.5	5	6	6.35	8	9.525	10	11	12	14	15	16	18	19	20	22
SOHM-12C	1.8	0.5	0.6	1	1.2
SOHM-16C	2	0.6	0.6		1	1.4
SOHM-20C	3		1		1.5	1.8	2.7
SOHM-25C	5				1.8	2.6	3
SOHM-32C	14					5	5.9	6.8	8.4	10	12	13
SOHM-43C	25							14	17	18	19	22
SOHM-53C	40									16	20	24	30	32
SOHM-57C	68													37	43	47	50	55	60
SOHM-70C	130													72	84	95	99	108	110