Dimensions / Performance

SOH-C

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			Side- clamp Hub Split (W)
		D	L	L1	L3	F	Size	Fastening Torque (N·m)							Angular (˚)	Parallel (mm)	End- play (mm)
SOH-16C		16	23.9	7.7	-	2.7	M2.6	1	1	2	13,000	3.1×10-7	65	8.5	1.5	1	0.1	X
SOH-20C		20	25.7	8	-	2.8	M2.6	1	1.5	3	11,000	8.2×10-7	120	14.2	1.5	1.5	0.1	X
SOH-25C		25.5	32	10.2	-	3.5	M3	1.7	2.5	5	10,000	2.7×10-6	200	29.3	1.5	2	0.1	X
SOH-32C		32	44.7	14.4	-	4.9	M4	3.5	7	14	9,000	9.2×10-6	620	59.6	1.5	2.5	0.15	X
SOH-43C		43	52	16.5	-	5.8	M5	8	12.5	25	8,000	3.4×10-5	1,200	127	1.5	3	0.15	X
SOH-53C		53	58.3	19.5	-	6.3	M5	8	20	40	7,000	9.1×10-5	1,400	217	1.5	3.2	0.2	X
SOH-57C		57	76.2	26.9	-	7.7	M6	13	34	68	6,000	1.6×10-4	2,600	329	1.5	3.5	0.2	X
SOH-70C		73	81.5	28	20	10	M8	30	65	130	4,500	5.4×10-4	5,000	670	1.5	3.5	0.3	○
SOH-90C		88	97	33.5	25	12	M10	50	105	210	4,500	1.2×10-3	7,500	1,240	1.5	4	0.35	○
SOH-120C		118	138	40.5	26.5	13	M12	90	200	400	3,500	6.5×10-3	14,000	2,600	1.5	4.5	0.4	○

• 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.

SOH-SC (Combination)

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	L2	F1	F2	Size (M1)	Fastening Torque (N·m)	Size (M2)	Fastening Torque (N·m)							Angular (˚)	Parallel (mm)	End- play (mm)
SOH-16SC		16	20.9	4.7	7.7	2.2	2.7	M3	0.7	M2.6	1	1	2	13,000	2.9×10-7	65	7.5	1.5	1	0.1
SOH-20SC		20	22.8	5.1	8	2.4	2.8	M4	1.7	M2.6	1	1.5	3	11,000	7.2×10-7	120	12.6	1.5	1.5	0.1
SOH-25SC		25.5	28.7	6.9	10.2	3.1	3.5	M4	1.7	M3	1.7	2.5	5	10,000	2.6×10-6	200	26	1.5	2	0.1
SOH-32SC		32	38.3	8	14.4	3.8	4.9	M5	4	M4	3.5	7	14	9,000	7.8×10-6	620	50.3	1.5	2.5	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.
• The values about Screw (size and fastening torque) are stated in left-to-right order. (S/C=Set-screw/Side-clamp)

Standard Inner Diameter (ID)

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

Model	Standard Inner Diameter (d1, d2) (mm)
	15	16	18	19	20	22	24	25	25.4	28	30	32	35	40	42	45	50	55	60
SOH-70□□	●	●	●	●	●	●	●	●	●	●	●	●	●	●
SOH-90□□					●	●	●	●	●	●	●	●	●	●	●	●	●
SOH-120□□								●	●	●	●	●	●	●	●	●	●	●	●

• 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	5	6	6.35	8	9.525	10	11	12	14	15	16	18	19	20
SOH-16C	2	0.5	1
SOH-20C	3		1	1.5	2
SOH-25C	5			2	3.5	3.9
SOH-32C	14				7	7.2
SOH-43C	25						15	15.7	18	18.2	21
SOH-53C	40								21	22.4	23.8	30
SOH-57C	68												42	46.2	49	51.8	56.7

Model	Max. Torque (N·m)	Slip Torque (N·m) by Inner Diameter (d1, d2)
		15	16	18	19	20	22	24	25	28	30	35	40	42	45	50
SOH-70C	130	60	65	85	90	100	120
SOH-90C	210					150	180
SOH-120C	400								200	250	275	300	320	330	350	380