1.5" Shaft Diameter Torque Limiters

Filter by

System of Measurement

Shaft Diameter

Maximum Torque

2,000 in·lbf to 2,999 in·lbf

3,000 in·lbf to 9,999 in·lbf

10,000 in·lbf or greater

Torque Limiter Type

Torque

24 ft·lbf to 320 ft·lbf

26 ft·lbf to 440 ft·lbf

90 ft·lbf to 250 ft·lbf

120 ft·lbf to 400 ft·lbf

Shaft Type

Keyway Width

For Maximum Sprocket or Pulley Width

5/8"

3/4"

13/16"

Maximum Rotation Speed

Width

Shaft Mount Type

Rotation Speed

Keyway Depth

Overall Width

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Torque-Limiting Mechanism

REACH

RoHS

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

Material

Steel

Drive Direction

Clockwise

Clockwise or Counterclockwise

Adjustability

Torque Adjustability

Hub Material

16 Products

Chain and Belt Torque Limiters


Torque Limiter Shown with Sprocket		Replacement Friction Lining

Prevent damage from overloading. When overloaded, these limiters cause your sprocket or pulley to slip. Once the overload is removed, the limiters automatically reset. Set the torque within the range listed. Friction lining is between the hub and pressure plate.

Double Spring—Double-spring limiters have a second spring for handling nearly twice the torque of single-spring limiters.

Sprockets—Sprockets are designed specifically to fit their corresponding limiters. These hubless sprockets are not interchangeable.

	Torque Limiters												Sprockets			Replacement Friction Lining
				Keyway				Torque, ft·lbf
	For Shaft Dia.	OD	Overall Wd.	Wd.	Dp.	For Max. Sprocket or Pulley Wd.	Friction Lining Thk.	Min.	Max.	Hub Material		Each	Choose a Roller Chain Trade Number		Each		Each
Single Spring



		1 1/2"	5"	2 7/8"	3/8"	3/16"	5/8"	1/8"	90	250	Steel	6524K157	0000000	40, 41, 50, 60, 80	6525K15	000000	6525K66	000000


		1 1/2"	6"	3"	3/8"	3/16"	13/16"	1/8"	24	320	Steel	6524K128	000000	40, 41, 50, 60, 80, 100	6525K33	000000	6525K73	00000


		Double Spring



				1 1/2"	5"	2 7/8"	3/8"	3/16"	5/8"	1/8"	120	400	Steel	6524K457	000000	40, 41, 50, 60, 80	6525K15	00000	6525K66	00000


				1 1/2"	6"	3"	3/8"	3/16"	3/4"	1/8"	26	440	Steel	6524K135	000000	40, 41, 50, 60, 80, 100	6525K33	000000	6525K73	00000

Replacements for Chain and Belt Torque Limiters

	For Roller Chain Trade No.
For 5" OD


40, 50	6525K811	000000
41	6525K812	00000
60, 80	6525K813	00000

For OD		Each
5"	6525K803	000000

One-Way Clutches

Since they transfer torque in one direction and spin freely in the other, these clutches are useful in applications where you don’t want motion to reverse, such as in backstopping, indexing, and overrunning. For example, they can be used to prevent a conveyor from reversing direction.

When choosing a clutch, consider how much torque you need to transfer. You should also consider how the clutch will attach to your mounted component.

Roller Engagement—Keyed Hub

Roller clutches are best for low- to medium-torque transfer in overrunning and indexing applications.

Clutches with a keyed hub let you slip on your component.

Through Shaft—Through-shaft clutches regulate torque transmission between an input shaft and a mounted component.

Slip-Fit Shaft Mount—Clutches that mount to shafts with a slip fit must be secured with a shaft collar or in some other way that prevents them from moving along the length of your shaft.

								Shaft		Hub			Clockwise Drive
	For Shaft Dia.	For Shaft Type	Max. Torque, ft·lbf	Max. Rotation Speed, rpm	OD	Overall Lg.	Material	Keyway Wd. × Keyway Dp.	Mount Type	Dia.	Lg.	Keyway Wd. × Keyway Dp.		Each
Through Shaft



		1 1/2"	Keyed	200	800	4 1/2"	4 1/2"	Steel	3/8" × 3/16"	Slip Fit	3"	2 1/16"	3/8" × 3/16"	4550N18	0000000

Sprag Engagement—Flush Hub


	Covers


Torque Arm Shown Installed	Torque Arms

Sprag clutches handle higher torque than roller clutches because they have more contact points. This makes them best for backstopping applications.

Clutches with a flush hub have a precision ground outer race, so they can be press fit directly into a component and positioned anywhere along the length of your shaft. They also have mounting holes on their face you can use to secure your component or an anti-rotation device, such as a torque arm, for a different backstopping setup.

Through Shaft—Through-shaft clutches regulate torque transmission between an input shaft and a mounted component.

Slip-Fit Shaft Mount—Clutches that mount to shafts with a slip fit must be secured with a shaft collar or in some other way that prevents them from moving along the length of your shaft.

Covers—Covers protect you from rotating equipment when the clutch is mounted to the end of the shaft.

Torque Arms—Clutch torque arms work as an anchor for clutches in backstopping applications. Mount to the outer race of your clutch and a stationary piece of equipment.

	Clutches												Covers		Torque Arms
				Max. Rotation Speed, rpm					Shaft		Clockwise or Counterclockwise Drive
	For Shaft Dia.	For Shaft Type	Max. Torque, ft·lbf	Inner-Race	Outer-Race	OD	Overall Lg.	Material	Keyway Wd. × Keyway Dp.	Mount Type		Each		Each		Each
Through Shaft



		1 1/2"	Keyed	2,250	2,200	750	5 3/8"	3 3/4"	Steel	3/8" × 3/16"	Slip Fit	4550N24	000000000	4550N203	0000000	4550N303	0000000