Rough Stock Bore Couplings

Filter by

System of Measurement

Shaft Diameter

Shaft Type

Material

Construction

Overall Length

Shaft Mount Type

Keyway Width

End Type

For Shaft Misalignment Type

For Rotary Motion

Keyway Depth

Length

Clamping Screw Material

18-8 Stainless Steel

Steel

Shaft Coupling Flexibility

Flexible

Rigid

Maximum Torque

Less than 1,000 in·lbf

1,000 in·lbf to 1,999 in·lbf

2,000 in·lbf to 2,999 in·lbf

3,000 in·lbf to 3,999 in·lbf

4,000 in·lbf or greater

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

Yes

RoHS

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

EAR99

Maximum Rotation Speed

Thread Size

Torque

Less than 1,000 in·lbf

1,000 in·lbf to 1,999 in·lbf

2,000 in·lbf to 2,999 in·lbf

3,000 in·lbf to 3,999 in·lbf

4,000 in·lbf or greater

Hardness

181 Products

Machinable-Bore Clamping Rigid Shaft Couplings

When one of your shafts is undersized from wear, oversized from coatings, or uncommonly sized, machine one end of these couplings to fit. They clamp around your shafts for a secure hold that won’t cause damage. But, you’ll need access to the end of each shaft to slide them into place. Since they’re rigid, they prevent movement between the shafts, making them good for high-torque applications. This also means your shafts must align to connect.

Steel


	For Keyed Shafts	For Round Shafts

Steel couplings resist corrosion in dry environments.

For Keyed Shafts—Couplings for keyed shafts grip the shaft’s key to eliminate slipping. They handle higher torque than couplings for round shafts.

	Overall Lg.	OD	Max. Rotation Speed	Max. Torque, in·lbf	For Rotary Motion		Each
For Keyed Shafts



	1/2" × 0.235" to 0.500"	1 7/8"	1 1/4"	Not Rated	380	Forward/Reverse, Start/Stop, Continuous	3084K65	000000


	5/8" × 0.235" to 0.625"	2 1/4"	1 1/2"	Not Rated	785	Forward/Reverse, Start/Stop, Continuous	3084K66	00000
	3/4" × 0.235" to 0.750"	2 5/8"	1 3/4"	Not Rated	1,505	Forward/Reverse, Start/Stop, Continuous	3084K67	00000
	7/8" × 0.235" to 0.875"	2 7/8"	1 7/8"	Not Rated	1,760	Forward/Reverse, Start/Stop, Continuous	3084K68	00000
	1" × 0.360" to 1.000"	3"	2"	Not Rated	2,010	Forward/Reverse, Start/Stop, Continuous	3084K69	00000
	1 1/8" × 0.360" to 1.125"	3 1/4"	2 1/8"	Not Rated	2,260	Forward/Reverse, Start/Stop, Continuous	3084K71	00000
	1 1/4" × 0.360" to 1.250"	3 3/8"	2 1/4"	Not Rated	2,510	Forward/Reverse, Start/Stop, Continuous	3084K72	00000
	1 3/8" × 0.360" to 1.375"	3 5/8"	2 3/8"	Not Rated	2,770	Forward/Reverse, Start/Stop, Continuous	3084K73	00000
	1 1/2" × 0.485" to 1.500"	3 3/4"	2 1/2"	Not Rated	3,020	Forward/Reverse, Start/Stop, Continuous	3084K74	000000
	1 3/4" × 0.485" to 1.750"	4 1/2"	3"	Not Rated	5,625	Forward/Reverse, Start/Stop, Continuous	3084K75	000000
	2" × 0.485" to 2.000"	4 7/8"	3 1/4"	Not Rated	6,430	Forward/Reverse, Start/Stop, Continuous	3084K76	000000


	8 mm × 6.000 mm to 8.000 mm	30 mm	18 mm	Not Rated	225	Forward/Reverse, Start/Stop, Continuous	3084K114	00000
	10 mm × 6.000 mm to 10.000 mm	35 mm	24 mm	Not Rated	285	Forward/Reverse, Start/Stop, Continuous	3084K115	00000
	12 mm × 6.000 mm to 12.000 mm	45 mm	28 mm	Not Rated	545	Forward/Reverse, Start/Stop, Continuous	3084K116	00000
	16 mm × 6.000 mm to 16.000 mm	50 mm	34 mm	Not Rated	1,095	Forward/Reverse, Start/Stop, Continuous	3084K117	00000
	20 mm × 6.000 mm to 20.000 mm	65 mm	40 mm	Not Rated	2,025	Forward/Reverse, Start/Stop, Continuous	3084K118	00000
	25 mm × 9.500 mm to 25.000 mm	65 mm	45 mm	Not Rated	2,535	Forward/Reverse, Start/Stop, Continuous	3084K119	00000
	30 mm × 9.500 mm to 30.000 mm	75 mm	54 mm	Not Rated	5,420	Forward/Reverse, Start/Stop, Continuous	3084K121	000000
	35 mm × 9.500 mm to 35.000 mm	80 mm	57 mm	Not Rated	3,550	Forward/Reverse, Start/Stop, Continuous	3084K122	000000
	40 mm × 12.500 mm to 40.000 mm	90 mm	60 mm	Not Rated	4,055	Forward/Reverse, Start/Stop, Continuous	3084K123	000000


	For Round Shafts



			1/2" × 0.235" to 0.500"	1 7/8"	1 1/4"	Not Rated	285	Forward/Reverse, Start/Stop, Continuous	3084K31	00000


			5/8" × 0.235" to 0.625"	2 1/4"	1 1/2"	Not Rated	490	Forward/Reverse, Start/Stop, Continuous	3084K32	00000
			3/4" × 0.235" to 0.750"	2 5/8"	1 3/4"	Not Rated	1,130	Forward/Reverse, Start/Stop, Continuous	3084K33	00000
			7/8" × 0.235" to 0.875"	2 7/8"	1 7/8"	Not Rated	1,320	Forward/Reverse, Start/Stop, Continuous	3084K47	00000
			1" × 0.360" to 1.000"	3"	2"	Not Rated	1,510	Forward/Reverse, Start/Stop, Continuous	3084K34	00000
			1 1/8" × 0.360" to 1.125"	3 1/4"	2 1/8"	Not Rated	1,695	Forward/Reverse, Start/Stop, Continuous	3084K48	00000
			1 1/4" × 0.360" to 1.250"	3 3/8"	2 1/4"	Not Rated	1,885	Forward/Reverse, Start/Stop, Continuous	3084K35	00000
			1 3/8" × 0.360" to 1.375"	3 5/8"	2 3/8"	Not Rated	2,080	Forward/Reverse, Start/Stop, Continuous	3084K49	00000
			1 1/2" × 0.485" to 1.500"	3 3/4"	2 1/2"	Not Rated	2,265	Forward/Reverse, Start/Stop, Continuous	3084K36	00000
			1 3/4" × 0.485" to 1.750"	4 1/2"	3"	Not Rated	4,220	Forward/Reverse, Start/Stop, Continuous	3084K51	000000
			2" × 0.485" to 2.000"	4 7/8"	3 1/4"	Not Rated	4,825	Forward/Reverse, Start/Stop, Continuous	3084K52	000000


			8 mm × 6.000 mm to 8.000 mm	30 mm	18 mm	Not Rated	170	Forward/Reverse, Start/Stop, Continuous	3084K89	00000
			10 mm × 6.000 mm to 10.000 mm	35 mm	24 mm	Not Rated	210	Forward/Reverse, Start/Stop, Continuous	3084K91	00000
			12 mm × 6.000 mm to 12.000 mm	45 mm	28 mm	Not Rated	405	Forward/Reverse, Start/Stop, Continuous	3084K92	00000
			16 mm × 6.000 mm to 16.000 mm	50 mm	34 mm	Not Rated	820	Forward/Reverse, Start/Stop, Continuous	3084K93	00000
			20 mm × 6.000 mm to 20.000 mm	65 mm	40 mm	Not Rated	1,520	Forward/Reverse, Start/Stop, Continuous	3084K94	00000
			25 mm × 9.500 mm to 25.000 mm	65 mm	45 mm	Not Rated	1,900	Forward/Reverse, Start/Stop, Continuous	3084K95	00000
			30 mm × 9.500 mm to 30.000 mm	75 mm	54 mm	Not Rated	4,065	Forward/Reverse, Start/Stop, Continuous	3084K96	00000
			35 mm × 9.500 mm to 35.000 mm	80 mm	57 mm	Not Rated	2,660	Forward/Reverse, Start/Stop, Continuous	3084K97	000000
			40 mm × 12.500 mm to 40.000 mm	90 mm	60 mm	Not Rated	3,040	Forward/Reverse, Start/Stop, Continuous	3084K98	000000

303 Stainless Steel


	For Keyed Shafts	For Round Shafts

303 stainless steel couplings resist rusting from water. But, they won’t stand up to salt water or chloride.

For Keyed Shafts—Couplings for keyed shafts grip the shaft’s key to eliminate slipping. They handle higher torque than couplings for round shafts.

	Overall Lg.	OD	Max. Rotation Speed	Max. Torque, in·lbf	For Rotary Motion		Each
For Keyed Shafts



	1/2" × 0.235" to 0.500"	1 7/8"	1 1/4"	Not Rated	260	Forward/Reverse, Start/Stop, Continuous	3084K77	000000


	5/8" × 0.235" to 0.625"	2 1/4"	1 1/2"	Not Rated	540	Forward/Reverse, Start/Stop, Continuous	3084K78	000000
	3/4" × 0.235" to 0.750"	2 5/8"	1 3/4"	Not Rated	1,035	Forward/Reverse, Start/Stop, Continuous	3084K79	000000
	1" × 0.360" to 1.000"	3"	2"	Not Rated	1,380	Forward/Reverse, Start/Stop, Continuous	3084K82	000000
	1 1/8" × 0.360" to 1.125"	3 1/4"	2 1/8"	Not Rated	1,550	Forward/Reverse, Start/Stop, Continuous	3084K83	000000
	1 1/4" × 0.360" to 1.250"	3 3/8"	2 1/4"	Not Rated	1,725	Forward/Reverse, Start/Stop, Continuous	3084K84	000000
	1 1/2" × 0.485" to 1.500"	3 3/4"	2 1/2"	Not Rated	2,075	Forward/Reverse, Start/Stop, Continuous	3084K86	000000
	10 mm × 6.000 mm to 10.000 mm	35 mm	24 mm	Not Rated	65	Forward/Reverse, Start/Stop, Continuous	3084K127	00000
	12 mm × 6.000 mm to 12.000 mm	45 mm	28 mm	Not Rated	240	Forward/Reverse, Start/Stop, Continuous	3084K128	00000
	16 mm × 6.000 mm to 16.000 mm	50 mm	34 mm	Not Rated	485	Forward/Reverse, Start/Stop, Continuous	3084K129	00000
	20 mm × 6.000 mm to 20.000 mm	65 mm	40 mm	Not Rated	900	Forward/Reverse, Start/Stop, Continuous	3084K131	000000


	For Round Shafts



			1/2" × 0.235" to 0.500"	1 7/8"	1 1/4"	Not Rated	195	Forward/Reverse, Start/Stop, Continuous	3084K53	00000


			5/8" × 0.235" to 0.625"	2 1/4"	1 1/2"	Not Rated	405	Forward/Reverse, Start/Stop, Continuous	3084K54	00000
			3/4" × 0.235" to 0.750"	2 5/8"	1 3/4"	Not Rated	775	Forward/Reverse, Start/Stop, Continuous	3084K55	00000
			7/8" × 0.235" to 0.875"	2 7/8"	1 7/8"	Not Rated	905	Forward/Reverse, Start/Stop, Continuous	3084K56	000000
			1" × 0.360" to 1.000"	3"	2"	Not Rated	1,035	Forward/Reverse, Start/Stop, Continuous	3084K57	000000
			1 1/4" × 0.360" to 1.250"	3 3/8"	2 1/4"	Not Rated	1,295	Forward/Reverse, Start/Stop, Continuous	3084K59	000000
			1 1/2" × 0.485" to 1.500"	3 3/4"	2 1/2"	Not Rated	1,555	Forward/Reverse, Start/Stop, Continuous	3084K62	000000
			1 3/4" × 0.485" to 1.750"	4 1/2"	3"	Not Rated	2,900	Forward/Reverse, Start/Stop, Continuous	3084K63	000000
			8 mm × 6.000 mm to 8.000 mm	30 mm	18 mm	Not Rated	35	Forward/Reverse, Start/Stop, Continuous	3084K102	00000
			10 mm × 6.000 mm to 10.000 mm	35 mm	24 mm	Not Rated	45	Forward/Reverse, Start/Stop, Continuous	3084K103	00000
			12 mm × 6.000 mm to 12.000 mm	45 mm	28 mm	Not Rated	180	Forward/Reverse, Start/Stop, Continuous	3084K104	00000


			16 mm × 6.000 mm to 16.000 mm	50 mm	34 mm	Not Rated	365	Forward/Reverse, Start/Stop, Continuous	3084K105	000000
			20 mm × 6.000 mm to 20.000 mm	65 mm	40 mm	Not Rated	675	Forward/Reverse, Start/Stop, Continuous	3084K106	000000

Machinable Shaft Ends

One side is unfinished for milling custom pulleys, threaded hubs, sprockets, collars, knobs, sensor targets, or just about anything imaginable; the other side is a one-piece clamping coupling for mounting whatever you’ve created to your shaft. Slide these ends onto your shaft and tighten the clamping screws for a secure hold that won’t damage your shaft.

Straight End


For Keyed Shafts	For Round Shafts

1215 Carbon Steel—Carbon steel ends are easier to machine than stainless steel. They have a black-oxide finish that adds a layer of rust resistance but should be used in primarily dry environments.

303 Stainless Steel—Stainless steel ends provide the most corrosion resistance but are more difficult to machine than steel.

For Keyed Shafts—Ends for keyed shafts have keyways that firmly grip the shaft’s key to eliminate slipping. They handle higher torque than ends for round shafts.

	For Shaft Dia.	Overall Lg.	OD	For Rotary Motion		Each
Black-Oxide 1215 Carbon Steel







				For Keyed Shafts

				1/2"	2 3/4"	1 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N75	000000


				5/8"	3 1/4"	1 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N76	00000
				3/4"	4 1/4"	1 3/4"	Continuous, Forward/Reverse, Start/Stop	3463N77	00000
				7/8"	4 3/8"	1 7/8"	Continuous, Forward/Reverse, Start/Stop	3463N78	00000
				1"	4 3/4"	2"	Continuous, Forward/Reverse, Start/Stop	3463N79	00000
				1 1/8"	4 3/4"	2 1/8"	Continuous, Forward/Reverse, Start/Stop	3463N81	00000
				1 1/4"	5"	2 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N82	000000
				1 3/8"	5"	2 3/8"	Continuous, Forward/Reverse, Start/Stop	3463N83	000000
				1 1/2"	5 3/8"	2 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N84	000000
				1 3/4"	6"	3"	Continuous, Forward/Reverse, Start/Stop	3463N85	000000
				2"	6 3/4"	3 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N86	000000




						For Round Shafts

						1/2"	2 3/4"	1 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N51	00000


						5/8"	3 1/4"	1 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N52	00000
						3/4"	4 1/4"	1 3/4"	Continuous, Forward/Reverse, Start/Stop	3463N53	00000
						7/8"	4 3/8"	1 7/8"	Continuous, Forward/Reverse, Start/Stop	3463N54	00000
						1"	4 3/4"	2"	Continuous, Forward/Reverse, Start/Stop	3463N55	00000
						1 1/8"	4 3/4"	2 1/8"	Continuous, Forward/Reverse, Start/Stop	3463N56	00000
						1 1/4"	5"	2 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N57	00000
						1 3/8"	5"	2 3/8"	Continuous, Forward/Reverse, Start/Stop	3463N58	00000
						1 1/2"	5 3/8"	2 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N59	00000
						1 3/4"	6"	3"	Continuous, Forward/Reverse, Start/Stop	3463N61	000000
						2"	6 3/4"	3 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N62	000000


						303 Stainless Steel







										For Keyed Shafts

										1/2"	2 3/4"	1 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N87	00000


										5/8"	3 1/4"	1 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N88	00000
										3/4"	4 1/4"	1 3/4"	Continuous, Forward/Reverse, Start/Stop	3463N89	000000
										7/8"	4 3/8"	1 7/8"	Continuous, Forward/Reverse, Start/Stop	3463N91	000000
										1"	4 3/4"	2"	Continuous, Forward/Reverse, Start/Stop	3463N92	000000
										1 1/8"	4 3/4"	2 1/8"	Continuous, Forward/Reverse, Start/Stop	3463N93	000000
										1 1/4"	5"	2 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N94	000000
										1 3/8"	5"	2 3/8"	Continuous, Forward/Reverse, Start/Stop	3463N95	000000
										1 1/2"	5 3/8"	2 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N96	000000
1 3/4"										6"	3"	Continuous, Forward/Reverse, Start/Stop	3463N97	000000
2"	6 3/4"									3 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N98	000000




		For Round Shafts

		1/2"	2 3/4"							1 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N63	00000


		5/8"	3 1/4"							1 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N64	00000
		3/4"	4 1/4"							1 3/4"	Continuous, Forward/Reverse, Start/Stop	3463N65	00000
		7/8"	4 3/8"							1 7/8"	Continuous, Forward/Reverse, Start/Stop	3463N66	00000
		1"	4 3/4"							2"	Continuous, Forward/Reverse, Start/Stop	3463N67	000000
		1 1/8"	4 3/4"							2 1/8"	Continuous, Forward/Reverse, Start/Stop	3463N68	00000
		1 1/4"	5"							2 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N69	000000
		1 3/8"	5"							2 3/8"	Continuous, Forward/Reverse, Start/Stop	3463N71	000000
		1 1/2"	5 3/8"							2 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N72	000000
		1 3/4"	6"							3"	Continuous, Forward/Reverse, Start/Stop	3463N73	000000
		2"	6 3/4"							3 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N74	000000

Flanged End


For Keyed Shafts	For Round Shafts

Use flanged ends to make objects with larger ODs than straight ends, or add mounting holes to create a custom mounting flange for connecting components.

1117 Carbon Steel—Carbon steel ends are easier to machine than stainless steel. They have a black-oxide finish that adds a layer of rust resistance but should be used in primarily dry environments.

303 Stainless Steel—Stainless steel ends provide the most corrosion resistance but are more difficult to machine than steel.

For Keyed Shafts—Ends for keyed shafts have keyways that firmly grip the shaft’s key to eliminate slipping. They handle higher torque than ends for round shafts.

	Flange OD	For Rotary Motion		Each
Black-Oxide 1117 Carbon Steel







	For Keyed Shafts

	1/2"	1 11/16"	1 1/4"	2 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N31	000000


	3/4"	2 1/16"	1 3/4"	2 63/64"	Continuous, Forward/Reverse, Start/Stop	3463N32	000000
	1"	2 1/4"	2"	3 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N33	000000




			For Round Shafts

			1/2"	1 11/16"	1 1/4"	2 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N11	00000


			3/4"	2 1/16"	1 3/4"	2 63/64"	Continuous, Forward/Reverse, Start/Stop	3463N12	00000
			1"	2 1/4"	2"	3 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N13	00000


			303 Stainless Steel







							For Keyed Shafts

							1/2"	1 11/16"	1 1/4"	2 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N41	000000


							3/4"	2 1/16"	1 3/4"	2 63/64"	Continuous, Forward/Reverse, Start/Stop	3463N42	000000
							1"	2 1/4"	2"	3 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N43	000000




									For Round Shafts

									1/2"	1 11/16"	1 1/4"	2 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N21	00000


									3/4"	2 1/16"	1 3/4"	2 63/64"	Continuous, Forward/Reverse, Start/Stop	3463N22	000000
									1"	2 1/4"	2"	3 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N23	000000

Machinable-Bore Flexible Shaft Couplings


	(Each Component Sold Separately)

Customize the bore of these flexible couplings to align uncommon shaft sizes as well as shafts that have become undersized from wear or oversized from coatings. Also known as Lovejoy® couplings, these three-piece couplings have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment. A complete coupling consists of two hubs and one spider (all components sold separately). Fasten to your shaft with set screws (not included), which bite into the shaft for a secure hold. If the spider fails, the hubs will lock together, giving you time to shut down your equipment to prevent component damage and replace the spider. These couplings do not need lubrication.

Iron Hubs and Buna-N Spiders

Buna-N—Buna-N spiders are the most commonly used because they damp the most vibration, making them best for forward/reverse and start/stop motion. They resist oil and chemicals.

Hubs									Buna-N Spiders
					For Set Screw						Misalignment Capability
For Shaft Dia.	Overall Lg.	OD	For Rotary Motion	Fabrication	Type	Thread Size		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
1/4" to 5/8"	1 23/32"	1 5/64"	Forward/Reverse, Start/Stop	Sintered	Cup Point	1/4"-20	3530N111	00000	18,000	26	0.015"	1°	-40 to 212	Buna-N	6408K84	00000
1/4" to 3/4"	1 63/64"	1 23/64"	Forward/Reverse, Start/Stop	Sintered	Cup Point	1/4"-20	3530N112	00000	14,000	43	0.015"	1°	-40 to 212	Buna-N	6408K73	0000
1/4" to 7/8"	2 1/8"	1 3/4"	Forward/Reverse, Start/Stop	Sintered	Cup Point	1/4"-20	3530N113	00000	11,000	90	0.015"	1°	-40 to 212	Buna-N	6408K74	00000
1/4" to 1"	2 5/32"	2 7/64"	Forward/Reverse, Start/Stop	Sintered	Cup Point	1/4"-20	3530N114	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000
7/16" to 1 1/8"	2 1/2"	2 7/64"	Forward/Reverse, Start/Stop	Sintered	Cup Point	5/16"-18	3530N115	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000
7/16" to 1 3/16"	2 27/32"	2 35/64"	Forward/Reverse, Start/Stop	Sintered	Cup Point	5/16"-18	3530N116	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000
7/16" to 1 3/8"	3 31/64"	2 35/64"	Forward/Reverse, Start/Stop	Sintered	Cup Point	5/16"-18	3530N117	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000
5/8" to 1 5/8"	4 7/32"	3 21/64"	Forward/Reverse, Start/Stop	Sintered	Cup Point	5/16"-18	3530N118	00000	5,000	790	0.015"	1°	-40 to 212	Buna-N	6408K79	00000
5/8" to 1 7/8"	4 1/2"	3 3/4"	Forward/Reverse, Start/Stop	Sintered	Cup Point	3/8"-16	3530N119	000000	5,000	1,240	0.015"	1°	-40 to 212	Buna-N	6408K81	00000
3/4" to 2 1/8"	4 7/8"	4 1/2"	Forward/Reverse, Start/Stop	Sintered	Cup Point	1/2"-13	3530N121	000000	5,000	1,725	0.015"	1°	-40 to 212	Buna-N	6408K82	00000
3/4" to 2 5/8"	5 11/32"	5"	Forward/Reverse, Start/Stop	Cast	Cup Point	1/2"-13	3530N122	000000	4,200	2,340	0.015"	1°	-40 to 212	Buna-N	6408K62	00000

Iron Hubs and Polyurethane Spiders

Polyurethane Rubber—Polyurethane spiders can run at a higher torque than Buna-N spiders, but do not offer as much vibration damping. Use them for continuous motion. Similar to Buna-N, they resist oil and chemicals.

Hubs									Polyurethane Spiders
					For Set Screw						Misalignment Capability
For Shaft Dia.	Overall Lg.	OD	For Rotary Motion	Fabrication	Type	Thread Size		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
1/4" to 7/8"	2 1/8"	1 3/4"	Continuous	Sintered	Cup Point	1/4"-20	3530N313	000000	3,600	135	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K11	000000
1/4" to 1"	2 5/32"	2 7/64"	Continuous	Sintered	Cup Point	1/4"-20	3530N314	00000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	00000
7/16" to 1 1/8"	2 1/2"	2 7/64"	Continuous	Sintered	Cup Point	5/16"-18	3530N315	00000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	00000
7/16" to 1 3/16"	2 27/32"	2 35/64"	Continuous	Sintered	Cup Point	5/16"-18	3530N316	00000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000
7/16" to 1 3/8"	3 31/64"	2 35/64"	Continuous	Sintered	Cup Point	5/16"-18	3530N317	00000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000
5/8" to 1 5/8"	4 7/32"	3 21/64"	Continuous	Sintered	Cup Point	5/16"-18	3530N318	00000	3,600	1,185	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K17	000000
5/8" to 1 7/8"	4 1/2"	3 3/4"	Continuous	Sintered	Cup Point	3/8"-16	3530N319	000000	3,600	1,860	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K19	000000

Iron Hubs and Hytrel Spiders

Hytrel—Hytrel spiders operate at the highest torque, but are less flexible than Buna-N and polyurethane spiders so they have less misalignment and vibration damping capabilities. Use them for continuous motion. Compared to Buna-N and polyurethane, these have the best oil and chemical resistance.

Hubs									Hytrel Spiders
					For Set Screw						Misalignment Capability
For Shaft Dia.	Overall Lg.	OD	For Rotary Motion	Fabrication	Type	Thread Size		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
1/4" to 5/8"	1 23/32"	1 5/64"	Continuous	Sintered	Cup Point	1/4"-20	3530N211	00000	18,000	50	0.015"	0.5°	-55 to 245	Hytrel	6408K91	000000
1/4" to 3/4"	1 63/64"	1 23/64"	Continuous	Sintered	Cup Point	1/4"-20	3530N212	00000	3,600	110	0.015"	0.5°	-55 to 245	Hytrel	6408K93	00000
1/4" to 7/8"	2 1/8"	1 3/4"	Continuous	Sintered	Cup Point	1/4"-20	3530N213	00000	3,600	225	0.015"	0.5°	-55 to 245	Hytrel	6408K94	00000
1/4" to 1"	2 5/32"	2 7/64"	Continuous	Sintered	Cup Point	1/4"-20	3530N214	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000
7/16" to 1 1/8"	2 1/2"	2 7/64"	Continuous	Sintered	Cup Point	5/16"-18	3530N215	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000
7/16" to 1 3/16"	2 27/32"	2 35/64"	Continuous	Sintered	Cup Point	5/16"-18	3530N216	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000
7/16" to 1 3/8"	3 31/64"	2 35/64"	Continuous	Sintered	Cup Point	5/16"-18	3530N217	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000
5/8" to 1 5/8"	4 7/32"	3 21/64"	Continuous	Sintered	Cup Point	5/16"-18	3530N218	00000	3,600	2,265	0.015"	0.5°	-55 to 245	Hytrel	6408K97	000000
5/8" to 1 7/8"	4 1/2"	3 3/4"	Continuous	Sintered	Cup Point	3/8"-16	3530N219	000000	3,600	3,705	0.015"	0.5°	-55 to 245	Hytrel	6408K98	000000
3/4" to 2 1/8"	4 7/8"	4 1/2"	Continuous	Sintered	Cup Point	1/2"-13	3530N221	000000	5,000	4,680	0.015"	0.5°	-55 to 245	Hytrel	6408K99	000000
3/4" to 2 5/8"	5 11/32"	5"	Continuous	Cast	Cup Point	1/2"-13	3530N222	000000	4,200	6,225	0.015"	0.5°	-55 to 245	Hytrel	6408K64	000000

Machinable-Bore Single U-Joints

Customize the bores of these U-joints to fit the exact dimensions of your shafts. To make drilling easy, they come apart and have a small, centered starter hole on each end. They’re single U-joints, so they connect and transfer torque between two shafts that are misaligned at an angle. A good choice for most applications, all have a pin-and-block joint that handles higher torque at lower speeds than other joint types, such as those with needle bearings. Made of steel, they’re strong and handle a good amount of torque.

To extend their life by keeping lubricant in and contaminants out, use the grooves on their body to add a cover (sometimes called bellows or boots). Drill holes through the U-joint and your shafts and then connect using spring pins.

Your shafts' misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.

								Torque
	For Max. Shaft Dia.	For Max. Shaft Dp.	Joint Dia.	Overall Lg.	Max. Operating Angle	Max. Rotation Speed, rpm	Max. Torque, in·lbf	3° Operating Angle	10° Operating Angle	Joint Type	For Shaft Type		Each
Steel



		3/8"	5/8"	1/2"	2"	25°	1,750	375	150 in·lbf @ 300 rpm	51 in·lbf @ 300 rpm	Pin and Block	Round	6443K12	000000


		1/2"	11/16"	5/8"	2 1/4"	25°	1,750	540	245 in·lbf @ 300 rpm	83 in·lbf @ 300 rpm	Pin and Block	Round	6443K42	00000
		5/8"	7/8"	3/4"	2 11/16"	25°	1,750	765	330 in·lbf @ 300 rpm	110 in·lbf @ 300 rpm	Pin and Block	Round	6443K13	00000

Machinable-Bore Double U-Joints

Drill custom bore sizes to connect shafts that are either parallel to each other or are misaligned at an angle. These double U-joints come apart and have a small, centered hole on each end to make drilling easy. Besides transferring torque, they keep parallel shafts moving in sync by making the output shaft move at the same rate as the input shaft. They have a pin-and-block joint, so they handle higher torque at lower speeds than other joint types such as those with needle bearings, making them a good choice for most applications. Made of steel, they’re strong and handle a good amount of torque.

Your shafts' misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.

								Torque
	For Max. Shaft Dia.	For Max. Shaft Dp.	Joint Dia.	Overall Lg.	Max. Operating Angle	Max. Rotation Speed, rpm	Max. Torque, in·lbf	3° Operating Angle	10° Operating Angle	Parallel Misalignment Capability	Joint Type	For Shaft Type		Each
Steel



		3/8"	5/8"	1/2"	4"	25°	1,750	375	150 in·lbf @ 300 rpm	51 in·lbf @ 300 rpm	0.845"	Pin and Block	Round	6443K15	0000000


		1/2"	11/16"	5/8"	4 1/2"	25°	1,750	540	245 in·lbf @ 300 rpm	83 in·lbf @ 300 rpm	0.951"	Pin and Block	Round	6443K52	000000
		5/8"	7/8"	3/4"	5 3/8"	25°	1,750	765	330 in·lbf @ 300 rpm	110 in·lbf @ 300 rpm	1.133"	Pin and Block	Round	6443K63	000000
		3/4"	1"	1"	6 3/4"	25°	1,750	1,560	595 in·lbf @ 300 rpm	200 in·lbf @ 300 rpm	1.428"	Pin and Block	Round	6443K55	000000
		1"	1 1/16"	1 1/4"	7 1/2"	25°	1,750	5,220	980 in·lbf @ 300 rpm	330 in·lbf @ 300 rpm	1.585"	Pin and Block	Round	6443K29	000000
		1 1/8"	1 3/16"	1 1/2"	8 1/2"	25°	1,750	7,920	1,425 in·lbf @ 300 rpm	480 in·lbf @ 300 rpm	1.796"	Pin and Block	Round	6443K38	000000