Double-Loop Couplings | McMaster-Carr

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Shaft Diameter

For Shaft Misalignment Type

Material

Overall Length

Angular Misalignment Capability

Finish

Maximum Torque

For Rotary Motion

Length

Torque

REACH

RoHS

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

Parallel Misalignment Capability

119 Products

High-Misalignment Vibration-Damping Precision Flexible Shaft Couplings

Also called double-loop couplings, these have a flexible center that reduces vibration and compensates for high parallel and angular shaft misalignment. They allow zero backlash (no play) and will run smoothly and quietly. Fasten to your shaft by tightening the set screws, which bite into the shaft to hold it.

316L Stainless Steel—316L stainless steel couplings offer excellent corrosion resistance.

						Misalignment Capability
	For Shaft Diameter	Overall Lg.	OD	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	For Rotary Motion	Center Material	Temp. Range, ° F		Each
Zinc-Plated Steel



		3/16" × 3/16"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K31	000000


		3/16" × 1/4"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K32	00000
		3/16" × 5/16"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K301	00000
		1/4" × 1/4"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K33	00000
		1/4" × 1/4"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K41	00000
		1/4" × 3/8"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K38	00000
		1/4" × 3/8"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K48	00000
		1/4" × 1/2"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K306	00000
		5/16" × 5/16"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K35	00000
		5/16" × 5/16"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K42	00000
		5/16" × 3/8"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K36	00000


		3/8" × 3/8"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K34	00000
		3/8" × 3/8"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K43	00000
		3/8" × 3/8"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K51	00000
		3/8" × 1/2"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K44	00000
		3/8" × 1/2"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K58	00000
		3/8" × 5/8"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K316	00000
		1/2" × 1/2"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K45	00000
		1/2" × 1/2"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K52	00000
		1/2" × 1/2"	2 7/16"	2"	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K61	00000
		1/2" × 5/8"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K53	00000


		1/2" × 5/8"	2 7/16"	2"	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K62	00000
		5/8" × 5/8"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K54	00000
		5/8" × 5/8"	2 7/16"	2"	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K63	00000
		3 mm × 3 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T501	00000
		4 mm × 4 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T502	00000
		4 mm × 4 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T601	00000
		4 mm × 5 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T503	00000
		4 mm × 6 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T504	00000
		5 mm × 5 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T505	00000
		6 mm × 6 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T506	00000


		6 mm × 6 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T602	00000
		6 mm × 6 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T701	00000
		6 mm × 6 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T801	00000
		6 mm × 8 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T507	00000
		6 mm × 8 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T603	00000
		6 mm × 8 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T702	00000
		8 mm × 8 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T508	00000
		8 mm × 8 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T604	00000
		8 mm × 8 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T703	00000
		8 mm × 8 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T802	00000


		8 mm × 10 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T605	00000
		8 mm × 10 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T704	00000
		8 mm × 10 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T803	00000
		10 mm × 10 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T606	00000
		10 mm × 10 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T705	00000
		10 mm × 10 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T804	00000
		10 mm × 12 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T607	00000
		10 mm × 12 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T706	00000
		11 mm × 11 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T608	00000
		12 mm × 12 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T609	00000

12 mm × 12 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T707	00000
12 mm × 12 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T806	00000
14 mm × 14 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T708	00000
14 mm × 14 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T807	00000
14 mm × 15 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T709	00000
15 mm × 15 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T711	00000
15 mm × 15 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T808	00000
16 mm × 16 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T712	00000
16 mm × 16 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T809	00000

316L Stainless Steel



		3/16" × 3/16"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K501	00000


		3/16" × 1/4"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K502	00000
		1/4" × 1/4"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K505	00000
		1/4" × 1/4"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K601	00000
		1/4" × 3/8"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K507	00000
		1/4" × 3/8"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K603	00000
		1/4" × 1/2"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K605	00000
		5/16" × 5/16"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K508	00000
		5/16" × 5/16"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K606	00000
		5/16" × 3/8"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K509	00000
		3/8" × 3/8"	1 1/8"	7/8"	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K511	00000


		3/8" × 3/8"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K611	00000
		3/8" × 3/8"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K701	000000
		3/8" × 1/2"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K613	00000
		3/8" × 1/2"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K703	000000
		3/8" × 5/8"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K705	000000
		1/2" × 1/2"	1 27/32"	1 11/16"	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K616	00000
		1/2" × 1/2"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K711	000000
		1/2" × 1/2"	2 7/16"	2"	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K801	000000
		1/2" × 5/8"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K713	000000
		1/2" × 5/8"	2 7/16"	2"	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K803	000000


		5/8" × 5/8"	2 1/4"	1 13/16"	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K716	000000
		5/8" × 5/8"	2 7/16"	2"	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	6183K806	000000
		3 mm × 3 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T101	00000
		4 mm × 4 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T102	00000
		4 mm × 4 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T201	00000
		4 mm × 5 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T103	00000
		4 mm × 6 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T104	00000
		5 mm × 5 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T105	00000
		6 mm × 6 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T106	00000
		6 mm × 6 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T202	00000


		6 mm × 6 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T301	00000
		6 mm × 6 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T401	000000
		6 mm × 8 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T107	00000
		6 mm × 8 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T203	00000
		6 mm × 8 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T302	00000
		8 mm × 8 mm	29 mm	22 mm	3,600	3	0.094"	10°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T108	00000
		8 mm × 8 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T204	00000
		8 mm × 8 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T303	00000
		8 mm × 8 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T402	000000
		8 mm × 10 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T205	00000


		8 mm × 10 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T304	00000
		8 mm × 10 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T403	000000
		10 mm × 10 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T206	00000
		10 mm × 10 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T305	00000
		10 mm × 10 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T404	000000
		10 mm × 12 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T207	00000
		10 mm × 12 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T306	00000
		11 mm × 11 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T208	00000
		12 mm × 12 mm	51 mm	43 mm	3,600	12	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T209	00000
		12 mm × 12 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T307	00000

12 mm × 12 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T406	000000
14 mm × 14 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T308	00000
14 mm × 14 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T407	000000
14 mm × 15 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T309	00000
15 mm × 15 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T311	00000
15 mm × 15 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T408	000000
16 mm × 16 mm	57 mm	46 mm	3,600	28	0.188"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T312	00000
16 mm × 16 mm	62 mm	51 mm	3,600	40	0.125"	15°	Forward/Reverse, Start/Stop	Polyurethane Rubber	0 to 180	5384T409	000000