Sprag Clutch Elements

Great for Large Quantities and Applications that Don’t Need Built-In Ball Bearing Support

If you need a large number of sprag clutches, have tight cost restraints but can’t sacrifice torque requirements, then our Series 400 sprag clutch elements are a good fit for your needs.

Series 400 Product Highlights:

• Bore (ID) Range: 2 to 240 mm (0.078 to 9.448 in)
• Torque Range: 1 to 2673 Nm
• Available with or without mounting rings
  • w/out Mounting Rings: FE 400 Series
  • w/ Mounting Rings: FR & FRN Series
• External bearing support is required. We recommend our RL series below.

Our sprag clutch elements are ready to mount on a shaft and can be used for overrunning, backstopping, or indexing.

They consist of a cage, sprags and a spring. The spring is designed to keep the sprags in contact with the shaft and housing.

GMN Sprag Clutch Elements w/out Mounting Rings

Our FE 400 Series is designed without mounting rings ready to place on a shaft and housing that IS hardened and ground.

Note: FE 400 requires external bearing support, we recommend our RL series below.

FE 400 Product Table Key

• M: Meander spring; Can index up to 60 Hz, best for high indexing applications.
• Z: Tension spring; Can index up to 10 Hz, best for overrunning & backstopping applications. (12 mm wide)
• Z2: Tension spring; Thinner version of the Z series (7 mm wide). Good for space restrictions & lower torque applications

Slug	Series	Part No	Spring Type	Shaft Diameter d [mm]	Outer Diameter D [mm]	Width b [mm]	Torque M [Nm]
sc-fe-410-z2-insert-element	FE	410 Z2	Tension	2	10	7	1
sc-fe-412-z-insert-element	FE	412 Z	Tension	4	12	12	4
sc-fe-412-z2-insert-element	FE	412 Z2	Tension	4	12	7	3
sc-fe-413-z2-insert-element	FE	413 Z2	Tension	5	13	7	4
sc-fe-414-z2-insert-element	FE	414 Z2	Tension	6	14	7	6
sc-fe-416-z-insert-element	FE	416 Z	Tension	8	16	12	16
sc-fe-416-z2-insert-element	FE	416 Z2	Tension	8	16	7	10
sc-fe-418-z2-insert-element	FE	418 Z2	Tension	10	18	7	16
sc-fe-420-z-insert-element	FE	420 Z	Tension	12	20	12	35
sc-fe-422-m-insert-element	FE	422 M	Meander	14	22	12	59
sc-fe-422-z-insert-element	FE	422 Z	Tension	14	22	12	53
sc-fe-422-z2-insert-element	FE	422 Z2	Tension	14	22	7	30
sc-fe-423-m-insert-element	FE	423 M	Meander	15	23	12	66
sc-fe-423-z-insert-element	FE	423 Z	Tension	15	23	12	62
sc-fe-423-z2-insert-element	FE	423 Z2	Tension	15	23	7	40
sc-fe-425-m-insert-element	FE	425 M	Meander	17	25	12	79
sc-fe-425-z-insert-element	FE	425 Z	Tension	17	25	12	72
sc-fe-425-z2-insert-element	FE	425 Z2	Tension	17	25	7	43
sc-fe-427-m-insert-element	FE	427 M	Meander	19	27	12	92
sc-fe-427-z-insert-element	FE	427 Z	Tension	19	27	12	83
sc-fe-428-m-insert-element	FE	428 M	Meander	20	28	12	99
sc-fe-428-z-insert-element	FE	428 Z	Tension	20	28	12	93
sc-fe-428-z2-insert-element	FE	428 Z2	Tension	20	28	7	55
sc-fe-430-m-insert-element	FE	430 M	Meander	22	30	12	114
sc-fe-430-z-insert-element	FE	430 Z	Tension	22	30	12	107
sc-fe-432-m-insert-element	FE	432 M	Meander	24	32	12	128
sc-fe-432-z-insert-element	FE	432 Z	Tension	24	32	12	117
sc-fe-433-m-insert-element	FE	433 M	Meander	25	33	12	140
sc-fe-433-z-insert-element	FE	433 Z	Tension	25	33	12	128
sc-fe-433-z2-insert-element	FE	433 Z2	Tension	25	33	7	78
sc-fe-435-m-insert-element	FE	435 M	Meander	27	35	12	153
sc-fe-435-z-insert-element	FE	435 Z	Tension	27	35	12	143
sc-fe-437-m-insert-element	FE	437 M	Meander	29	37	12	169
sc-fe-437-z-insert-element	FE	437 Z	Tension	29	37	12	154
sc-fe-437-z2-insert-element	FE	437 Z2	Tension	29	37	7	97
sc-fe-438-m-insert-element	FE	438 M	Meander	30	38	12	178
sc-fe-438-z-insert-element	FE	438 Z	Tension	30	38	12	166
sc-fe-438-z2-insert-element	FE	438 Z2	Tension	30	38	7	105
sc-fe-442-m-insert-element	FE	442 M	Meander	34	42	12	213
sc-fe-442-z-insert-element	FE	442 Z	Tension	34	42	12	198
sc-fe-442-z2-insert-element	FE	442 Z2	Tension	34	42	7	125
sc-fe-443-m-insert-element	FE	443 M	Meander	35	43	12	224
sc-fe-443-z-insert-element	FE	443 Z	Tension	35	43	12	207
sc-fe-443-z2-insert-element	FE	443 Z2	Tension	35	43	7	131
sc-fe-448-m-insert-element	FE	448 M	Meander	40	48	12	271
sc-fe-448-z-insert-element	FE	448 Z	Tension	40	48	12	248
sc-fe-448-z2-insert-element	FE	448 Z2	Tension	40	48	7	156
sc-fe-453-m-insert-element	FE	453 M	Meander	45	53	12	321
sc-fe-453-z-insert-element	FE	453 Z	Tension	45	53	12	293
sc-fe-453-z2-insert-element	FE	453 Z2	Tension	45	53	7	185
sc-fe-455-z-insert-element	FE	455 Z	Tension	47	55	12	313
sc-fe-458-m-insert-element	FE	458 M	Meander	50	58	12	372
sc-fe-458-z-insert-element	FE	458 Z	Tension	50	58	12	344
sc-fe-458-z2-insert-element	FE	458 Z2	Tension	50	58	7	216
sc-fe-459-m-insert-element	FE	459 M	Meander	51	59	12	381
sc-fe-459-z-insert-element	FE	459 Z	Tension	51	59	12	353
sc-fe-463-m-insert-element	FE	463 M	Meander	55	63	12	426
sc-fe-463-z-insert-element	FE	463 Z	Tension	55	63	12	393
sc-fe-463-z2-insert-element	FE	463 Z2	Tension	55	63	7	246
sc-fe-468-m-insert-element	FE	468 M	Meander	60	68	12	481
sc-fe-468-z-insert-element	FE	468 Z	Tension	60	68	12	444
sc-fe-468-z2-insert-element	FE	468 Z2	Tension	60	68	7	277
sc-fe-470-m-insert-element	FE	470 M	Meander	62	70	12	505
sc-fe-470-z-insert-element	FE	470 Z	Tension	62	70	12	465
sc-fe-473-m-insert-element	FE	473 M	Meander	65	73	12	538
sc-fe-473-z-insert-element	FE	473 Z	Tension	65	73	12	495
sc-fe-478-m-insert-element	FE	478 M	Meander	70	78	12	596
sc-fe-478-z-insert-element	FE	478 Z	Tension	70	78	12	548
sc-fe-488-m-insert-element	FE	488 M	Meander	80	88	12	715
sc-fe-488-z-insert-element	FE	488 Z	Tension	80	88	12	657
sc-fe-508-z-insert-element	FE	508 Z	Tension	100	108	12	889
sc-fe-528-z-insert-element	FE	528 Z	Tension	120	128	12	1127
sc-fe-648-z-insert-element	FE	648 Z	Tension	240	248	12	2673

GMN Sprag Clutch Elements with Mounting Rings

Similar to the FE 400 series but are designed with hardened & ground race rings that press fit into a shaft and housing unit. Use this series if your shaft and housing are NOT hardened and ground.

FR & FRN Product Table Key

• FR: Mounting rings with a press fit inner ring. Fits shaft diameter from 10-45 mm.
• FRN: Mounting rings with a keyway inner ring. Fits shaft diameter from 10-60 mm.
• M: Meander spring; Can index up to 60 Hz, best for high indexing applications.
• Z: Tension spring; Can index up to 10 Hz, best for overrunning & backstopping applications.

Slug	Series	Part No	Spring Type	Shaft Diameter d [mm]	Outer Diameter D [mm]	Width b [mm]	Torque M [Nm]
sc-fr-422-z-insert-element	FR	422 Z	Tension	10	26	12	53
sc-fr-427-z-insert-element	FR	427 Z	Tension	15	31	12	83
sc-fr-432-z-insert-element	FR	432 Z	Tension	20	36	12	117
sc-fr-437-z-insert-element	FR	437 Z	Tension	25	41	12	154
sc-fr-442-z-insert-element	FR	442 Z	Tension	30	46	12	198
sc-fr-448-z-insert-element	FR	448 Z	Tension	35	53	12	248
sc-fr-453-z-insert-element	FR	453 Z	Tension	40	58	12	294
sc-fr-463-z-insert-element	FR	463 Z	Tension	50	68	12	394
sc-fr-473-z-insert-element	FR	473 Z	Tension	60	78	12	496
sc-frn-427-z-insert-element	FRN	427 Z	Tension	10	31	12	83
sc-frn-432-z-insert-element	FRN	432 Z	Tension	12	36	12	117
sc-frn-437-z-insert-element	FRN	437 Z	Tension	15	41	12	154
sc-frn-442-z-insert-element	FRN	442 Z	Tension	20	46	12	198
sc-frn-453-z-insert-element	FRN	453 Z	Tension	25	58	12	294
sc-frn-459-z-insert-element	FRN	459 Z	Tension	30	64	12	353
sc-frn-463-z-insert-element	FRN	463 Z	Tension	35	68	12	393
sc-frn-470-z-insert-element	FRN	470 Z	Tension	40	75	12	466
sc-frn-473-z-insert-element	FRN	473 Z	Tension	45	78	12	496
sc-fr-422-m-insert-element	FR	422 M	Meander	10	26	12	60
sc-fr-427-m-insert-element	FR	427 M	Meander	15	31	12	92
sc-fr-432-m-insert-element	FR	432 M	Meander	20	36	12	128
sc-fr-437-m-insert-element	FR	437 M	Meander	25	41	12	169
sc-fr-442-m-insert-element	FR	442 M	Meander	30	46	12	212
sc-fr-448-m-insert-element	FR	448 M	Meander	35	53	12	272
sc-fr-453-m-insert-element	FR	453 M	Meander	40	58	12	321
sc-fr-463-m-insert-element	FR	463 M	Meander	50	68	12	427
sc-fr-473-m-insert-element	FR	473 M	Meander	60	78	12	539
sc-frn-427-m-insert-element	FRN	427 M	Meander	10	31	12	92
sc-frn-432-m-insert-element	FRN	432 M	Meander	12	36	12	128
sc-frn-437-m-insert-element	FRN	437 M	Meander	15	41	12	169
sc-frn-442-m-insert-element	FRN	442 M	Meander	20	46	12	212
sc-frn-453-m-insert-element	FRN	453 M	Meander	25	58	12	321
sc-frn-459-m-insert-element	FRN	459 M	Meander	30	64	12	332
sc-frn-463-m-insert-element	FRN	463 M	Meander	35	68	12	427
sc-frn-470-m-insert-element	FRN	470 M	Meander	40	75	12	506
sc-frn-473-m-insert-element	FRN	473 M	Meander	45	78	12	539

External Support for Our Sprag Elements

Roller Bearings (RL) Product Table Key

Use our RL roller bearings to give support and center GMN Sprag Elements. The RL series uses the same shaft and housing dimensions as the FE series.

If you are thinking of using the RL series for our FR / FRN sprag elements with mounting rings, please contact our onsite engineers to help you calculate the correct size RL size for your shaft and housing unit.

Slug	Series	Part No	Shaft Diameter d [mm]	Outer Diameter D [mm]	Width b [mm]	Torque M [Nm]
sc-rl-412-4-roller-bearing	RL	412 - 4	4	12	6	N/A
sc-rl-414-4-roller-bearing	RL	414 - 4	6	14	6	N/A
sc-rl-416-4-roller-bearing	RL	416 - 4	8	16	6	N/A
sc-rl-418-4-roller-bearing	RL	418 - 4	10	18	6	N/A
sc-rl-422-4-roller-bearing	RL	422 - 4	14	22	6	N/A
sc-rl-423-4-roller-bearing	RL	423 - 4	15	23	6	N/A
sc-rl-425-4-roller-bearing	RL	425 - 4	17	25	6	N/A
sc-rl-427-4-roller-bearing	RL	427 - 4	19	27	6	N/A
sc-rl-428-4-roller-bearing	RL	428 - 4	20	28	6	N/A
sc-rl-430-4-roller-bearing	RL	430 - 4	22	30	6	N/A
sc-rl-432-4-roller-bearing	RL	432 - 4	24	32	6	N/A
sc-rl-433-4-roller-bearing	RL	433 - 4	25	33	6	N/A
sc-rl-437-4-roller-bearing	RL	437 - 4	29	37	6	N/A
sc-rl-438-4-roller-bearing	RL	438 - 4	30	38	6	N/A
sc-rl-442-4-roller-bearing	RL	442 - 4	34	42	6	N/A
sc-rl-443-4-roller-bearing	RL	443 - 4	35	43	6	N/A
sc-rl-448-4-roller-bearing	RL	448 - 4	40	48	6	N/A
sc-rl-453-4-roller-bearing	RL	453 - 4	45	53	6	N/A
sc-rl-455-4-roller-bearing	RL	455 - 4	47	55	6	N/A
sc-rl-458-4-roller-bearing	RL	458 - 4	50	58	6	N/A
sc-rl-459-4-roller-bearing	RL	459 - 4	51	59	6	N/A
sc-rl-463-4-roller-bearing	RL	463 - 4	55	63	6	N/A
sc-rl-468-4-roller-bearing	RL	468 - 4	60	68	6	N/A
sc-rl-470-4-roller-bearing	RL	470 - 4	62	70	6	N/A
sc-rl-473-4-roller-bearing	RL	473 - 4	65	73	6	N/A
sc-rl-478-4-roller-bearing	RL	478 - 4	70	78	6	N/A
sc-rl-488-4-roller-bearing	RL	488 - 4	80	88	6	N/A