6061 Aluminum Shaft Couplings

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System of Measurement

Shaft Diameter

Shaft Type

Construction

Shaft Mount Type

Overall Length

For Shaft Misalignment Type

Shaft Coupling Flexibility

Length

Maximum Rotation Speed

Maximum Torque

Less than 10,000 in·lbf

For Rotary Motion

Keyway Width

Number of Clamping Screws Included

Rotation Speed

Less than 10,000 rpm

Torque

Less than 10,000 in·lbf

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

RoHS

Compliant

REACH

Compliant

Number of Set Screws Included

Clamping Screw Material

Steel

Clamping Screw Finish

Black Oxide

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39 Products

Two-Piece Rigid Shaft Couplings

Install and remove these shaft couplings without disconnecting the shafts, motors, and other attached components—they’re made in two pieces so you don’t need to slide them onto shaft ends. They’re also useful when you have limited access to the ends of the shafts. These couplings clamp onto the shafts, creating a secure hold that won’t mar them. Good for high-torque applications, they have a rigid construction. However, their rigidity means these couplings can only connect shafts that are well aligned.

6061 Aluminum

For Round

Shafts

Aluminum couplings are lightweight, making them useful in precision motion control and servomotor applications.

	Overall Lg.	OD	Max. Rotation Speed, rpm	Max. Torque	For Rotary Motion		Each
For Round Shafts



	1/4" × 1/4"	2 1/2"	1 7/8"	3,450	100 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K18	000000


	1/4" × 3/8"	2 1/2"	1 7/8"	3,450	100 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K21	00000
	3/8" × 3/8"	2 1/2"	1 7/8"	3,450	100 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K22	00000
	1/2" × 1/2"	2 1/2"	1 7/8"	3,450	150 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K11	00000
	1/2" × 5/8"	2 1/2"	1 7/8"	3,450	150 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K31	00000
	1/2" × 3/4"	2 1/2"	1 7/8"	3,450	150 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K32	00000
	5/8" × 5/8"	2 1/2"	1 7/8"	3,450	150 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K12	00000
	5/8" × 3/4"	2 1/2"	1 7/8"	3,450	150 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K33	00000
	3/4" × 3/4"	2 1/2"	1 7/8"	3,450	250 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K13	00000
	3/4" × 7/8"	2 1/2"	1 7/8"	3,450	250 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K34	00000
	3/4" × 1"	2 1/2"	1 7/8"	3,450	250 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K35	00000


	7/8" × 7/8"	2 1/2"	1 7/8"	3,450	250 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K14	00000
	7/8" × 1"	2 1/2"	1 7/8"	3,450	250 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K36	00000
	1" × 1"	2 1/2"	1 7/8"	3,450	500 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K15	00000
	1 1/8" × 1 1/8"	2 1/2"	1 7/8"	3,450	500 in·lbf	Forward/Reverse, Start/Stop, Continuous	6115K23	00000
	10 mm × 10 mm	2 1/2"	1 7/8"	3,450	100 ft·lbf	Forward/Reverse, Start/Stop, Continuous	6115K37	00000
	11 mm × 11 mm	2 1/2"	1 7/8"	3,450	100 ft·lbf	Forward/Reverse, Start/Stop, Continuous	6115K39	00000
	11 mm × 12 mm	2 1/2"	1 7/8"	3,450	150 ft·lbf	Forward/Reverse, Start/Stop, Continuous	6115K41	00000
	12 mm × 15 mm	2 1/2"	1 7/8"	3,450	150 ft·lbf	Forward/Reverse, Start/Stop, Continuous	6115K43	00000
	20 mm × 20 mm	2 1/2"	1 7/8"	3,450	500 ft·lbf	Forward/Reverse, Start/Stop, Continuous	6115K49	00000
	25 mm × 25 mm	2 1/2"	1 7/8"	3,450	500 ft·lbf	Forward/Reverse, Start/Stop, Continuous	6115K52	00000

Set Screw Rigid Shaft Couplings

Slide these couplings onto the end of your shaft and tighten the set screws to secure. Set screws bite into the shaft to hold the coupling in place. Good for high-torque applications, rigid couplings connect two shafts that are aligned, allowing for no relative movement between the shafts.

6061 Aluminum

For Round Shafts

Aluminum couplings are lightweight with good corrosion resistance.

	Overall Lg.	OD	Max. Rotation Speed, rpm	Max. Torque, in·lbf	For Rotary Motion	No. of Set Screws Included		Each
For Round Shafts



	3/16"	3/4"	1/2"	3,450	30	Forward/Reverse, Start/Stop, Continuous	2	2424K9	000000


	1/4"	3/4"	1/2"	2,025	40	Forward/Reverse, Start/Stop, Continuous	2	2424K11	00000
	5/16"	1"	5/8"	2,025	50	Forward/Reverse, Start/Stop, Continuous	2	2424K12	00000
	3/8"	1"	3/4"	2,025	105	Forward/Reverse, Start/Stop, Continuous	2	2424K13	00000
	1/2"	1 1/2"	1"	2,025	140	Forward/Reverse, Start/Stop, Continuous	2	2424K14	00000
	5/8"	2"	1 1/4"	2,025	275	Forward/Reverse, Start/Stop, Continuous	2	2424K15	00000
	3/4"	2"	1 1/2"	2,025	330	Forward/Reverse, Start/Stop, Continuous	2	2424K16	00000
	7/8"	2"	1 3/4"	1,020	385	Forward/Reverse, Start/Stop, Continuous	2	2424K17	00000
	1"	3"	2"	1,020	440	Forward/Reverse, Start/Stop, Continuous	2	2424K18	00000
	1 1/8"	3"	2 1/8"	1,020	695	Forward/Reverse, Start/Stop, Continuous	2	2424K19	00000
	1 1/4"	4"	2 1/4"	1,020	770	Forward/Reverse, Start/Stop, Continuous	2	2424K21	00000


	1 1/2"	4 1/2"	2 1/2"	1,020	925	Forward/Reverse, Start/Stop, Continuous	2	2424K23	000000

Overload-Protection Spring-Loaded Torque Limiters

Protect your machinery if there is a jam, emergency stop, or other overload by cutting off torque between shafts when a maximum torque is reached. These torque limiters automatically resume transmitting torque once it drops below the set maximum. They should not be used in applications that frequently exceed the maximum torque. Since they come factory-set to a maximum torque, there’s no adjustment required and no risk of unintended changes to the torque setting.

They act as a flexible shaft coupling, so they reduce vibration and protect components from wear by compensating for angular and parallel misalignment. Fasten to your shafts by tightening the set screws, which bite into each shaft to hold it.

			Misalignment Capability
For Shaft Dia.	For Shaft Type	Max. Rotation Speed, rpm	Parallel	Angular	OD	Overall Lg.	Keyway Wd. × Keyway Dp.	Material	Center Material	Drive Direction	Re-Engagement Position	Choose a Maximum Torque, in·lbf		Each
1/2"	Round	1,800	0.031"	6°	3 1/2"	3"	—	6061 Aluminum	Steel	Clockwise and Counterclockwise	Multiple	25, 50, 75, 100, 125	6609K11	0000000
5/8"	Keyed	1,800	0.031"	6°	3 1/2"	3"	3/16" × 3/32"	6061 Aluminum	Steel	Clockwise and Counterclockwise	Multiple	25, 50, 75, 100, 125	6609K12	000000
3/4"	Keyed	1,800	0.031"	6°	3 1/2"	3"	3/16" × 3/32"	6061 Aluminum	Steel	Clockwise and Counterclockwise	Multiple	25, 50, 75, 100, 125	6609K13	000000
7/8"	Keyed	1,800	0.031"	6°	3 1/2"	3"	3/16" × 3/32"	6061 Aluminum	Steel	Clockwise and Counterclockwise	Multiple	25, 50, 75, 100, 125	6609K14	000000
1"	Keyed	1,800	0.031"	6°	3 1/2"	3"	1/4" × 1/8"	6061 Aluminum	Steel	Clockwise and Counterclockwise	Multiple	25, 50, 75, 100, 125	6609K15	000000

Torque Limiter Sensor Rings


Torque Limiter with Sensor Ring Installed

Sensor rings help you detect an overload by moving only when the limiter is transmitting torque. Use a sensor (not included) to trigger an alarm or shut down when the ring stops moving.

Material	OD	Thk.		Each
Steel	3 1/2"	0.06"	6609K1	000000