Knurled Clutches | McMaster-Carr

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System of Measurement

Shaft Diameter

Shaft Mount Type

Clutch Type

Drive Direction

Shaft Type

Maximum Torque

Less than 1,000 in·lbf

Rotation Speed

2,000 rpm to 9,999 rpm

Drive Type

Torque

Maximum Rotation Speed

Engagement Type

Drive Style

Finish

Hub Diameter

Hub Length

Hub Type

Set Screw Drive Style

Hex

Set Screw Material

Steel

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

REACH

Not Compliant

RoHS

Compliant

Number of Set Screws Included

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6 Products

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—Knurled Hub

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

Clutches with a knurled hub can be press fit into the bore of your component.

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

Set-Screw Shaft Mount—Clutches that mount to shafts with set screws bite into your shaft when tightened to hold it.

								Shaft		Hub		Clockwise Drive		Counterclockwise 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.		Each		Each
Through Shaft



		1/4"	Round	0.83	5,000	15/16"	31/32"	Steel	—	Set Screw	5/8"	9/32"	4550N41	0000000	4550N42	0000000


		3/8"	Keyed	1.25	5,000	1 3/16"	1"	Steel	3/32" × 3/64"	Set Screw	9/16"	3/8"	4550N43	000000	4550N44	000000
		1/2"	Keyed	4.16	2,000	1 1/2"	1 9/32"	Steel	1/8" × 1/16"	Set Screw	7/8"	1/2"	4550N45	000000	4550N46	000000