Spider Couplings | McMaster-Carr

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235 Products

Set Screw Flexible Shaft Couplings


Hubs, Split Spider, and Retaining Ring Shown Assembled	(Each Component Sold Separately)

Hubs and Spider Shown Assembled	(Each Component Sold Separately)

Each hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place. 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, or two hubs, one split spider, and one retaining ring (all components sold separately). Split spiders are easier to install and replace than standard spiders because there’s no need for tools or removing your hubs. Twist-lock them in place using a retaining ring.

303 Stainless Steel—303 stainless steel hubs have excellent corrosion resistance.

Buna-N—Buna-N spiders provide good vibration damping and chemical resistance.

Hytrel—Hytrel spiders provide fair vibration damping and excellent chemical resistance.

Polyurethane Rubber—Polyurethane spiders and split spiders provide fair vibration damping and good chemical resistance.

	Hubs							Buna-N Spiders								Hytrel Spiders								Polyurethane Spiders								Polyurethane Split Spiders								347 Stainless Steel Retaining Rings
										Misalignment Capability								Misalignment Capability								Misalignment Capability								Misalignment Capability
	Overall Lg.	OD	For Shaft Type	For Rotary Motion	Choose a Shaft Diameter		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each		Each







				303 Stainless Steel Hubs

				2 1/8"	1 3/4"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 7/8"	2306K13	0000000	11,000	90	0.015"	1°	-40 to 212	Buna-N	6408K74	000000	3,600	225	0.015"	0.5°	-55 to 245	Hytrel	6408K94	000000	3,600	135	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K11	000000	—	—	—	—	—	—	———	0	———	0


				2 1/8"	1 3/4"	Round	Forward/Reverse, Start/Stop	1/4"	2306K131	000000	11,000	90	0.015"	1°	-40 to 212	Buna-N	6408K74	00000	3,600	225	0.015"	0.5°	-55 to 245	Hytrel	6408K94	00000	3,600	135	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K11	00000	—	—	—	—	—	—	———	0	———	0
				2 1/2"	2 7/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1", 1 1/8"	2306K14	000000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	00000	9,200	670	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K33	000000	2393K23	000000
				3 31/64"	2 35/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 7/8", 1", 1 1/8", 1 3/8"	2306K16	000000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000	7,700	1,110	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K34	000000	2393K24	00000
				4 7/32"	3 21/64"	Keyed	Forward/Reverse, Start/Stop	1", 1 1/8", 1 3/8", 1 1/2", 1 5/8"	2306K18	000000	5,000	790	0.015"	1°	-40 to 212	Buna-N	6408K79	00000	3,600	2,265	0.015"	0.5°	-55 to 245	Hytrel	6408K97	000000	3,600	1,185	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K17	000000	5,900	2,180	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K35	000000	2393K25	000000




						Iron Hubs

						13/16"	5/8"	Round	Forward/Reverse, Start/Stop	1/8", 3/16", 1/4", 5/16", 3/8"	6408K9	0000	31,000	3	0.015"	1°	-40 to 212	Buna-N	6408K61	0000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0


						1 23/32"	1 5/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 9/16", 9 mm, 10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm	6408K11	0000	18,000	26	0.015"	1°	-40 to 212	Buna-N	6408K84	0000	18,000	50	0.015"	0.5°	-55 to 245	Hytrel	6408K91	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
						1 23/32"	1 5/64"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16", 5/8"	6408K92	0000	18,000	26	0.015"	1°	-40 to 212	Buna-N	6408K84	0000	18,000	50	0.015"	0.5°	-55 to 245	Hytrel	6408K91	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
						1 63/64"	1 23/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 9/16", 5/8", 11/16", 3/4", 10 mm, 11 mm, 12 mm, 14 mm, 16 mm, 19 mm	6408K12	00000	14,000	43	0.015"	1°	-40 to 212	Buna-N	6408K73	0000	3,600	110	0.015"	0.5°	-55 to 245	Hytrel	6408K93	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
						1 63/64"	1 23/64"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	6408K118	00000	14,000	43	0.015"	1°	-40 to 212	Buna-N	6408K73	0000	3,600	110	0.015"	0.5°	-55 to 245	Hytrel	6408K93	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
						2 1/8"	1 3/4"	Keyed	Forward/Reverse, Start/Stop	1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 12 mm, 14 mm, 15 mm, 16 mm, 19 mm, 20 mm, 22 mm	6408K13	00000	11,000	90	0.015"	1°	-40 to 212	Buna-N	6408K74	00000	3,600	225	0.015"	0.5°	-55 to 245	Hytrel	6408K94	00000	3,600	135	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K11	00000	—	—	—	—	—	—	———	0	———	0
						2 1/8"	1 3/4"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	6408K119	00000	11,000	90	0.015"	1°	-40 to 212	Buna-N	6408K74	00000	3,600	225	0.015"	0.5°	-55 to 245	Hytrel	6408K94	00000	3,600	135	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K11	00000	—	—	—	—	—	—	———	0	———	0
						2 5/32"	2 7/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 12 mm, 14 mm, 15 mm, 16 mm, 18 mm, 19 mm, 20 mm, 22 mm, 24 mm	6408K14	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	00000	9,200	670	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K33	00000	2393K23	00000
						2 5/32"	2 7/64"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	6408K23	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	225	0.015"	0.5°	-55 to 245	Hytrel	6408K94	00000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	00000	9,200	670	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K33	00000	2393K23	00000
						2 1/2"	2 7/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1 1/16", 1 1/8", 19 mm, 20 mm, 24 mm, 25 mm, 28 mm	6408K15	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	00000	9,200	670	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K33	00000	2393K23	00000
						2 1/2"	2 7/64"	Round	Forward/Reverse, Start/Stop	7/16"	6408K152	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	00000	9,200	670	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K33	00000	2393K23	00000


						2 27/32"	2 35/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1 1/8", 1 3/16", 22 mm, 24 mm, 28 mm	6408K16	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000	7,700	1,110	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K34	000000	2393K24	00000
						2 27/32"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	6408K161	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000	7,700	1,110	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K34	000000	2393K24	00000
						3 31/64"	2 35/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 9/16", 5/8", 11/16", 3/4", 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 24 mm, 25 mm, 28 mm, 30 mm	6408K17	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000	7,700	1,110	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K34	000000	2393K24	00000
						3 31/64"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	6408K172	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000	7,700	1,110	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K34	000000	2393K24	00000
						4 7/32"	3 21/64"	Keyed	Forward/Reverse, Start/Stop	5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1 1/8", 1 3/16", 1 1/4", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8", 19 mm, 20 mm, 24 mm, 25 mm, 28 mm, 30 mm, 32 mm, 38 mm	6408K18	00000	5,000	790	0.015"	1°	-40 to 212	Buna-N	6408K79	00000	3,600	2,265	0.015"	0.5°	-55 to 245	Hytrel	6408K97	000000	3,600	1,185	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K17	000000	5,900	2,180	0.03"	2°	-30 to 200	Polyurethane Rubber	2393K35	000000	2393K25	000000
						4 1/2"	3 3/4"	Keyed	Forward/Reverse, Start/Stop	5/8", 3/4", 7/8", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8", 1 11/16", 1 3/4", 1 7/8", 24 mm, 38 mm, 42 mm	6408K19	000000	5,000	1,240	0.015"	1°	-40 to 212	Buna-N	6408K81	00000	3,600	3,705	0.015"	0.5°	-55 to 245	Hytrel	6408K98	000000	3,600	1,860	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K19	000000	—	—	—	—	—	—	———	0	———	0
						4 7/8"	4 1/2"	Keyed	Forward/Reverse, Start/Stop	3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 3/4", 1 7/8", 1 15/16", 2", 2 1/8"	6408K21	000000	5,000	1,725	0.015"	1°	-40 to 212	Buna-N	6408K82	00000	5,000	4,680	0.015"	0.5°	-55 to 245	Hytrel	6408K99	000000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
						5 11/32"	5"	Keyed	Forward/Reverse, Start/Stop	3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 3/4", 1 7/8", 1 15/16", 2", 2 1/8", 2 3/16", 2 1/4", 2 3/8", 2 7/16", 2 1/2", 2 5/8"	6408K22	000000	4,200	2,340	0.015"	1°	-40 to 212	Buna-N	6408K62	00000	4,200	6,225	0.015"	0.5°	-55 to 245	Hytrel	6408K64	000000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0




								Steel Hubs

								21 mm	16 mm	Round	Forward/Reverse, Start/Stop	4 mm, 5 mm, 6 mm, 8 mm	6133N11	0000	31,000	3	0.015"	1°	-40 to 212	Buna-N	6408K61	0000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0


								44 mm	27 mm	Round	Forward/Reverse, Start/Stop	5 mm, 7 mm	6133N12	0000	18,000	26	0.015"	1°	-40 to 212	Buna-N	6408K84	0000	18,000	50	0.015"	0.5°	-55 to 245	Hytrel	6408K91	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								51 mm	35 mm	Keyed	Forward/Reverse, Start/Stop	17 mm	6133N117	00000	14,000	43	0.015"	1°	-40 to 212	Buna-N	6408K73	0000	3,600	110	0.015"	0.5°	-55 to 245	Hytrel	6408K93	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								54 mm	45 mm	Keyed	Forward/Reverse, Start/Stop	10 mm	6133N119	00000	11,000	90	0.015"	1°	-40 to 212	Buna-N	6408K74	00000	3,600	225	0.015"	0.5°	-55 to 245	Hytrel	6408K94	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								54 mm	45 mm	Keyed	Forward/Reverse, Start/Stop	11 mm	6133N14	00000	11,000	90	0.015"	1°	-40 to 212	Buna-N	6408K74	00000	3,600	225	0.015"	0.5°	-55 to 245	Hytrel	6408K94	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								54 mm	54 mm	Keyed	Forward/Reverse, Start/Stop	10 mm	6133N123	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								54 mm	54 mm	Keyed	Forward/Reverse, Start/Stop	25 mm	6133N124	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								64 mm	54 mm	Keyed	Forward/Reverse, Start/Stop	11 mm, 12 mm, 14 mm, 15 mm, 16 mm, 17 mm, 22 mm	6133N16	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								73 mm	65 mm	Keyed	Forward/Reverse, Start/Stop	15 mm, 16 mm, 19 mm, 20 mm, 30 mm	6133N17	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								89 mm	65 mm	Keyed	Forward/Reverse, Start/Stop	12 mm, 16 mm, 20 mm, 22 mm, 32 mm, 35 mm	6133N18	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
								108 mm	85 mm	Keyed	Forward/Reverse, Start/Stop	22 mm, 35 mm, 40 mm, 42 mm	6133N19	00000	5,000	790	0.015"	1°	-40 to 212	Buna-N	6408K79	00000	3,600	2,265	0.015"	0.5°	-55 to 245	Hytrel	6408K97	000000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0


115 mm	96 mm							Keyed	Forward/Reverse, Start/Stop	25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 48 mm	6133N21	00000	5,000	1,240	0.015"	1°	-40 to 212	Buna-N	6408K81	00000	3,600	3,705	0.015"	0.5°	-55 to 245	Hytrel	6408K98	000000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
124 mm	115 mm							Keyed	Forward/Reverse, Start/Stop	24 mm, 30 mm, 32 mm, 35 mm, 38 mm, 40 mm, 42 mm, 55 mm	6133N22	000000	5,000	1,725	0.015"	1°	-40 to 212	Buna-N	6408K82	00000	5,000	4,680	0.015"	0.5°	-55 to 245	Hytrel	6408K99	000000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0
137 mm	127 mm							Keyed	Forward/Reverse, Start/Stop	32 mm, 38 mm, 40 mm, 42 mm, 45 mm, 48 mm, 50 mm, 55 mm, 60 mm	6133N23	000000	4,200	2,340	0.015"	1°	-40 to 212	Buna-N	6408K62	00000	4,200	6,225	0.015"	0.5°	-55 to 245	Hytrel	6408K64	000000	—	—	—	—	—	—	———	0	—	—	—	—	—	—	———	0	———	0

Clamping Vibration-Damping Precision Flexible Shaft Couplings


Components of a Coupling Shown Assembled	(Each Component Sold Separately)

Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screws to secure. Good for precision motor and pump applications, the spider-shaped cushion reduces shock and compensates for minor shaft misalignment. Couplings allow zero backlash (no play).

A complete coupling consists of two hubs and one spider (each component sold separately). Hubs are lightweight, corrosion-resistant aluminum. Spiders are polyurethane for fair vibration damping and good chemical resistance.

Hubs							Durometer 98A Polyurethane Spiders							Durometer 92A Polyurethane Spiders							Durometer 85A Polyurethane Spiders
									Misalignment Capability							Misalignment Capability							Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Rotary Motion	Choose a Shaft Diameter		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F		Each







			2024 Aluminum Hubs

			1 7/64"	3/4"	Round	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 4 mm, 5 mm, 6 mm, 7 mm, 8 mm	9845T1	000000	8,000	30	0.003"	0.8°	0 to 180	9845T11	000000	8,000	18	0.004"	0.9°	0 to 180	9845T12	000000	8,000	10	0.005"	1°	0 to 180	9845T13	000000


			1 13/32"	1"	Keyed	Forward/Reverse, Start/Stop	10 mm, 11 mm, 12 mm	9845T63	00000	8,000	150	0.003"	0.8°	0 to 180	9845T14	00000	8,000	58	0.005"	0.9°	0 to 180	9845T15	00000	8,000	30	0.006"	1°	0 to 180	9845T16	00000
			1 13/32"	1"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 1/2", 6 mm, 7 mm, 8 mm, 9 mm	9845T2	00000	8,000	150	0.003"	0.8°	0 to 180	9845T14	00000	8,000	58	0.005"	0.9°	0 to 180	9845T15	00000	8,000	30	0.006"	1°	0 to 180	9845T16	00000
			1 13/16"	1 5/16"	Keyed	Forward/Reverse, Start/Stop	10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm	9845T64	00000	8,000	170	0.003"	0.8°	0 to 180	9845T17	00000	8,000	70	0.005"	0.9°	0 to 180	9845T18	00000	8,000	36	0.006"	1°	0 to 180	9845T19	00000
			1 13/16"	1 5/16"	Round	Forward/Reverse, Start/Stop	5/16", 3/8", 1/2", 5/8", 8 mm, 9 mm	9845T3	00000	8,000	170	0.003"	0.8°	0 to 180	9845T17	00000	8,000	70	0.005"	0.9°	0 to 180	9845T18	00000	8,000	36	0.006"	1°	0 to 180	9845T19	00000
			2 7/64"	1 5/8"	Keyed	Forward/Reverse, Start/Stop	10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm, 20 mm	9845T4	00000	8,000	330	0.004"	0.8°	0 to 180	9845T21	00000	8,000	190	0.006"	0.9°	0 to 180	9845T22	00000	—	—	—	—	—	———	0
			2 7/64"	1 5/8"	Round	Forward/Reverse, Start/Stop	3/8", 1/2", 5/8", 3/4"	9845T65	00000	8,000	330	0.004"	0.8°	0 to 180	9845T21	00000	8,000	190	0.006"	0.9°	0 to 180	9845T22	00000	—	—	—	—	—	———	0
			2 13/32"	2"	Keyed	Forward/Reverse, Start/Stop	12 mm, 14 mm, 15 mm, 16 mm, 20 mm, 25 mm	9845T5	000000	8,000	550	0.005"	0.8°	0 to 180	9845T24	00000	8,000	440	0.006"	0.9°	0 to 180	9845T25	00000	—	—	—	—	—	———	0
			2 13/32"	2"	Round	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1"	9845T66	000000	8,000	550	0.005"	0.8°	0 to 180	9845T24	00000	8,000	440	0.006"	0.9°	0 to 180	9845T25	00000	—	—	—	—	—	———	0
			3 13/64"	2 1/4"	Keyed	Forward/Reverse, Start/Stop	14 mm, 15 mm, 16 mm, 20 mm, 25 mm, 30 mm	9845T6	000000	8,000	820	0.004"	0.8°	0 to 180	9845T26	00000	8,000	570	0.005"	0.9°	0 to 180	9845T27	00000	—	—	—	—	—	———	0
			3 13/64"	2 1/4"	Round	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1"	9845T67	000000	8,000	820	0.004"	0.8°	0 to 180	9845T26	00000	8,000	570	0.005"	0.9°	0 to 180	9845T27	00000	—	—	—	—	—	———	0


			21.8 mm	15 mm	Round	Forward/Reverse, Start/Stop	3 mm, 4 mm, 5 mm, 6 mm	9845T51	00000	8,000	16	0.002"	0.8°	0 to 180	9845T485	00000	8,000	10	0.004"	0.9°	0 to 180	9845T486	00000	8,000	4.8	0.005"	1°	0 to 180	9845T487	00000
			35.3 mm	25.4 mm	Keyed	Forward/Reverse, Start/Stop	8 mm, 9 mm	9845T57	00000	8,000	150	0.003"	0.8°	0 to 180	9845T14	00000	8,000	58	0.005"	0.9°	0 to 180	9845T15	00000	8,000	30	0.006"	1°	0 to 180	9845T16	00000
			35.3 mm	25.4 mm	Round	Forward/Reverse, Start/Stop	10 mm, 11 mm, 12 mm	9845T52	00000	8,000	150	0.003"	0.8°	0 to 180	9845T14	00000	8,000	58	0.005"	0.9°	0 to 180	9845T15	00000	8,000	30	0.006"	1°	0 to 180	9845T16	00000
			44.5 mm	33.3 mm	Keyed	Forward/Reverse, Start/Stop	8 mm, 9 mm	9845T58	00000	8,000	170	0.003"	0.8°	0 to 180	9845T17	00000	8,000	70	0.005"	0.9°	0 to 180	9845T18	00000	8,000	36	0.006"	1°	0 to 180	9845T19	00000
			44.5 mm	33.3 mm	Round	Forward/Reverse, Start/Stop	10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm	9845T53	00000	8,000	170	0.003"	0.8°	0 to 180	9845T17	00000	8,000	70	0.005"	0.9°	0 to 180	9845T18	00000	8,000	36	0.006"	1°	0 to 180	9845T19	00000
			53 mm	41.3 mm	Keyed	Forward/Reverse, Start/Stop	13 mm, 17 mm, 18 mm, 19 mm	9845T59	00000	8,000	330	0.004"	0.8°	0 to 180	9845T21	00000	8,000	190	0.006"	0.9°	0 to 180	9845T22	00000	—	—	—	—	—	———	0
			53 mm	41.3 mm	Round	Forward/Reverse, Start/Stop	10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm	9845T54	00000	8,000	330	0.004"	0.8°	0 to 180	9845T21	00000	8,000	190	0.006"	0.9°	0 to 180	9845T22	00000	—	—	—	—	—	———	0
			61 mm	50.8 mm	Keyed	Forward/Reverse, Start/Stop	17 mm, 19 mm, 22 mm, 24 mm	9845T61	000000	8,000	550	0.005"	0.8°	0 to 180	9845T24	00000	8,000	440	0.006"	0.9°	0 to 180	9845T25	00000	—	—	—	—	—	———	0
			61 mm	50.8 mm	Round	Forward/Reverse, Start/Stop	12 mm, 15 mm, 19 mm, 22 mm, 24 mm, 25 mm	9845T55	00000	8,000	550	0.005"	0.8°	0 to 180	9845T24	00000	8,000	440	0.006"	0.9°	0 to 180	9845T25	00000	—	—	—	—	—	———	0
			80 mm	57.2 mm	Keyed	Forward/Reverse, Start/Stop	19 mm, 22 mm, 24 mm, 28 mm	9845T62	000000	8,000	820	0.004"	0.8°	0 to 180	9845T26	00000	8,000	570	0.005"	0.9°	0 to 180	9845T27	00000	—	—	—	—	—	———	0


			80 mm	57.2 mm	Round	Forward/Reverse, Start/Stop	16 mm, 19 mm, 20 mm, 22 mm, 25 mm, 30 mm, 32 mm	9845T56	000000	8,000	820	0.004"	0.8°	0 to 180	9845T26	00000	8,000	570	0.005"	0.9°	0 to 180	9845T27	00000	—	—	—	—	—	———	0

High-Torque Set Screw Flexible Shaft Couplings


(Each Component Sold Separately)	Hubs, Split Spider, and Split Spider Cover Shown Assembled

The thick split spider on these couplings takes on twice as much torque as standard split spiders, while a set screw holds the hubs in place on your shaft. Also known as jaw couplings, use them to connect motors to pumps, mixers, and other high-torque equipment. You don’t need to lubricate them.

For a complete coupling, you’ll need two hubs, one split spider, and a split spider cover (all sold separately).

Hubs attach to the end of your shaft.

Split spiders cushion between the two hubs to dampen vibration, reduce shocks, and handle shaft misalignment, extending the life of bearings, seals, and motors. You can replace them without having to remove the hubs or move your shaft and equipment around, which reduces the risk of needing to realign the shaft.

Split spider covers hold the spider in place.

Hubs							303 Stainless Steel Split Spider Covers		Steel Split Spider Covers
Overall Lg.	OD	For Shaft Type	For Rotary Motion	Choose a Shaft Diameter		Each		Each		Each







			303 Stainless Steel Hubs, Split Spiders

			2 13/16"	2"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 11 mm, 12 mm, 14 mm, 15 mm, 16 mm, 18 mm, 19 mm, 20 mm, 22 mm, 24 mm, 25 mm	3565N1	000000	3565N61	000000	———	0




					Steel Hubs, Split Spiders

					3 39/64"	2 5/16"	Keyed	Forward/Reverse, Start/Stop	3/4", 1", 1 1/8", 1 1/4", 1 3/8", 1 1/2", 20 mm, 22 mm, 25 mm, 28 mm	3565N2	00000	———	0	3565N62	000000


					4 29/32"	3 3/16"	Keyed	Forward/Reverse, Start/Stop	3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8", 1 1/2", 1 5/8", 1 3/4", 2", 2 1/8", 24 mm, 25 mm, 28 mm, 30 mm, 32 mm, 35 mm, 38 mm, 40 mm, 42 mm, 45 mm	3565N3	000000	———	0	3565N63	00000
					6 1/16"	3 33/64"	Keyed	Forward/Reverse, Start/Stop	1", 1 3/8", 1 1/2", 1 3/4", 1 7/8", 2", 2 1/8", 2 1/4", 2 3/8", 40 mm, 55 mm	3565N9	000000	———	0	3565N64	000000

Urethane Split Spiders

			Misalignment Capability
	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Color		Each
Medium Soft







				Durometer 48D

				6,000	7,065	0.038"	2°	-60 to 212	Red	3565N51	000000


				7,000	3,425	0.039"	2°	-60 to 212	Red	3565N47	00000
				9,000	1,055	0.039"	2°	-60 to 212	Red	3565N44	00000
				12,000	375	0.02"	2°	-60 to 212	Red	3565N41	00000


				Medium







								Durometer 60D

								6,000	14,000	0.038"	2°	-60 to 212	Blue	3565N53	00000


								6,000	14,000	0.038"	2°	-60 to 350	White	3565N52	000000
								7,000	6,460	0.039"	2°	-60 to 212	Blue	3565N49	00000
								7,000	6,460	0.039"	2°	-60 to 350	White	3565N48	000000
								9,000	2,075	0.039"	2°	-60 to 212	Blue	3565N46	00000
								9,000	2,075	0.039"	2°	-60 to 350	White	3565N45	000000
								12,000	815	0.02"	2°	-60 to 212	Blue	3565N43	00000
								12,000	815	0.02"	2°	-60 to 350	White	3565N42	00000

Set Screw Vibration-Damping Precision Flexible Shaft Couplings


(Each Component Sold Separately)	Components of a Coupling Shown Assembled

The included set screw holds the coupling in place. Good for precision motor and pump applications, the spider-shaped cushion reduces shock and compensates for minor shaft misalignment. Couplings allow zero backlash (no play).

Hubs							Durometer 98A Polyurethane Spiders							Durometer 92A Polyurethane Spiders							Durometer 85A Polyurethane Spiders							Durometer 80A Polyurethane Spiders							Durometer 64D Polyurethane Spiders
									Misalignment Capability							Misalignment Capability							Misalignment Capability							Misalignment Capability							Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Rotary Motion	Choose a Shaft Diameter		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F		Each







			2024 Aluminum Hubs

			21 mm	15 mm	Round	Continuous, Forward/Reverse, Start/Stop	4 mm, 5 mm, 6 mm	9939T31	000000	8,000	16	0.002"	0.8°	-10 to 180	9939T444	000000	8,000	10	0.004"	0.9°	-10 to 180	9939T445	000000	8,000	4.8	0.005"	1°	-10 to 180	9939T446	000000	—	—	—	—	—	———	0	—	—	—	—	—	———	0


			27 mm	19 mm	Round	Continuous, Forward/Reverse, Start/Stop	5 mm, 6 mm, 7 mm, 8 mm	9939T32	00000	8,000	30	0.003"	0.8°	0 to 180	9845T11	00000	8,000	18	0.004"	0.9°	0 to 180	9845T12	00000	8,000	10	0.005"	1°	0 to 180	9845T13	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0
			35 mm	25 mm	Keyed	Continuous, Forward/Reverse, Start/Stop	10 mm, 11 mm	9939T38	00000	8,000	150	0.003"	0.8°	0 to 180	9845T14	00000	8,000	58	0.005"	0.9°	0 to 180	9845T15	00000	8,000	30	0.006"	1°	0 to 180	9845T16	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0
			35 mm	25 mm	Round	Continuous, Forward/Reverse, Start/Stop	6 mm, 8 mm, 10 mm, 11 mm, 12 mm	9939T33	00000	8,000	150	0.003"	0.8°	0 to 180	9845T14	00000	8,000	58	0.005"	0.9°	0 to 180	9845T15	00000	8,000	30	0.006"	1°	0 to 180	9845T16	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0
			44 mm	33 mm	Keyed	Continuous, Forward/Reverse, Start/Stop	14 mm, 16 mm	9939T39	00000	8,000	170	0.003"	0.8°	0 to 180	9845T17	00000	8,000	70	0.005"	0.9°	0 to 180	9845T18	00000	8,000	36	0.006"	1°	0 to 180	9845T19	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0
			44 mm	33 mm	Round	Continuous, Forward/Reverse, Start/Stop	8 mm, 14 mm	9939T34	00000	8,000	170	0.003"	0.8°	0 to 180	9845T17	00000	8,000	70	0.005"	0.9°	0 to 180	9845T18	00000	8,000	36	0.006"	1°	0 to 180	9845T19	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0
			53 mm	41 mm	Keyed	Continuous, Forward/Reverse, Start/Stop	12 mm, 14 mm, 16 mm, 20 mm	9939T41	00000	8,000	330	0.004"	0.8°	0 to 180	9845T21	00000	8,000	190	0.006"	0.9°	0 to 180	9845T22	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	—	—	—	—	—	———	0
			53 mm	41 mm	Round	Continuous, Forward/Reverse, Start/Stop	12 mm, 14 mm, 18 mm, 20 mm	9939T35	00000	8,000	330	0.004"	0.8°	0 to 180	9845T21	00000	8,000	190	0.006"	0.9°	0 to 180	9845T22	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	—	—	—	—	—	———	0
			61 mm	50 mm	Keyed	Continuous, Forward/Reverse, Start/Stop	18 mm, 20 mm, 24 mm	9939T42	000000	8,000	550	0.005"	0.8°	0 to 180	9845T24	00000	8,000	440	0.006"	0.9°	0 to 180	9845T25	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	—	—	—	—	—	———	0
			80 mm	57 mm	Keyed	Continuous, Forward/Reverse, Start/Stop	14 mm, 20 mm, 24 mm, 28 mm	9939T43	000000	8,000	820	0.004"	0.8°	0 to 180	9845T26	00000	8,000	570	0.005"	0.9°	0 to 180	9845T27	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	—	—	—	—	—	———	0




					6023 Aluminum Hubs

					1 3/8"	1 1/4"	Keyed	Forward/Reverse, Start/Stop	3/8", 1/2", 5/8"	9939T111	00000	10,000	220	0.011"	1°	0 to 180	9939T11	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	10,000	50	0.011"	1.2°	0 to 180	9939T13	00000	10,000	280	0.011"	0.8°	0 to 180	9939T12	00000


					1 3/8"	1 1/4"	Round	Forward/Reverse, Start/Stop	1/4"	9939T105	00000	10,000	220	0.011"	1°	0 to 180	9939T11	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	10,000	50	0.011"	1.2°	0 to 180	9939T13	0000	10,000	280	0.011"	0.8°	0 to 180	9939T12	0000
					2 39/64"	1 21/32"	Keyed	Forward/Reverse, Start/Stop	3/8", 1/2", 5/8", 3/4"	9939T112	00000	9,000	300	0.011"	1°	0 to 180	9939T14	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	9,000	105	0.011"	1.2°	0 to 180	9939T16	0000	9,000	370	0.011"	0.8°	0 to 180	9939T15	0000
					3 5/64"	2 13/64"	Keyed	Forward/Reverse, Start/Stop	5/8", 3/4", 1"	9939T113	000000	8,000	1,060	0.011"	1°	0 to 180	9939T17	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	8,000	305	0.011"	1.2°	0 to 180	9939T19	00000	8,000	1,320	0.011"	0.8°	0 to 180	9939T18	00000
					3 35/64"	2 39/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 1", 1 1/4", 1 1/2"	9939T114	000000	7,000	2,830	0.011"	1°	0 to 180	9939T21	00000	—	—	—	—	—	———	0	—	—	—	—	—	———	0	7,000	750	0.011"	1.2°	0 to 180	9939T23	00000	7,000	3,540	0.011"	0.8°	0 to 180	9939T22	00000

Clamping Flexible Shaft Couplings


Components of a Coupling Shown Assembled	(Each Component Sold Separately)

Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screw to secure. Also known as Lovejoy® couplings, they 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 (each component sold separately). Hubs are aluminum for light weight and good corrosion resistance.

Hytrel—Hytrel spiders provide fair vibration damping and excellent chemical resistance.

Polyurethane Rubber—Polyurethane spiders provide fair vibration damping and good chemical resistance.

Hubs							Hytrel Spiders								Polyurethane Spiders
									Misalignment Capability								Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Rotary Motion	Choose a Shaft Diameter		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each







			6026 Aluminum Hubs

			7/8"	9/16"	Round	Forward/Reverse, Start/Stop	1/8", 3/16", 1/4"	2401K12	000000	27,000	42	0.002"	0.8°	-55 to 245	Hytrel	2401K82	000000	27,000	21	0.004"	1°	-30 to 160	Polyurethane Rubber	2401K81	00000


			1 3/16"	51/64"	Round	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 3/8"	2401K13	00000	19,000	105	0.002"	0.8°	-55 to 245	Hytrel	2401K84	00000	19,000	53	0.004"	1°	-30 to 160	Polyurethane Rubber	2401K83	0000
			1 11/32"	63/64"	Round	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 3/8", 7/16"	2401K14	00000	15,200	210	0.002"	0.8°	-55 to 245	Hytrel	2401K86	00000	15,200	89	0.004"	1°	-30 to 160	Polyurethane Rubber	2401K85	00000
			1 25/64"	1 3/16"	Round	Forward/Reverse, Start/Stop	3/16", 1/4", 3/8", 1/2", 5/8"	2401K15	00000	12,700	280	0.002"	0.8°	-55 to 245	Hytrel	2401K88	00000	12,700	130	0.004"	1°	-30 to 160	Polyurethane Rubber	2401K87	0000

Metal-Detectable Flexible Shaft Couplings


Hubs and Spider Shown Assembled	(Each Component Sold Separately)

Safely connect slightly misaligned shafts near food lines—the spider on these couplings contains metal, so it’ll trigger a metal detector if a piece frays off and contaminates your batch. The hubs are made of 303 stainless steel to resist rusting in wet conditions common to food plants. However, these couplings shouldn’t directly touch food, since they’re not FDA compliant. If the spider fails, the hubs will interlock, giving you time to shut down equipment before other components break. You don’t need to lubricate these couplings.

Also called Lovejoy® and jaw couplings, a complete coupling requires two hubs and one spider (all sold separately).

Hubs attach to the end of your shaft and have a set screw that bites into the shaft to hold the coupling in place.

Spiders cushion between the two hubs to reduce shocks and handle minor shaft misalignment.

Metal-Impregnated Buna-N—Metal-impregnated Buna-N spiders are the most commonly used and are good for applications that start, stop, and reverse often. They also dampen vibration and resist some chemicals.

Metal-Impregnated Hytrel—Metal-impregnated Hytrel spiders run at higher torque and resist chemicals better than Buna-N spiders. However, they shouldn’t be used in applications that start, stop, and reverse frequently.

	Hubs						Metal-Impregnated Buna-N Spiders							Metal-Impregnated Hytrel Spiders
									Misalignment Capability							Misalignment Capability
	Overall Lg.	OD	For Rotary Motion	Choose a Shaft Diameter		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Spider Material		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Spider Material		Each
303 Stainless Steel Hubs



		2 1/8"	1 3/4"	Continuous, Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 7/8"	3507N9	000000	3,600	80	0.015"	1°	Metal-Impregnated Buna-N	3507N39	000000	3,600	240	0.015"	1°	Metal-Impregnated Hytrel	3507N44	000000


		2 1/2"	2 1/8"	Continuous, Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 7/8", 1", 1 1/8"	3507N615	000000	3,600	185	0.015"	1°	Metal-Impregnated Buna-N	3507N4	00000	3,600	565	0.015"	1°	Metal-Impregnated Hytrel	3507N45	000000
		3 1/2"	2 17/32"	Continuous, Forward/Reverse, Start/Stop	3/4", 1", 1 1/4", 1 3/8"	3507N815	000000	3,600	415	0.015"	1°	Metal-Impregnated Buna-N	3507N41	00000	3,600	1,245	0.015"	1°	Metal-Impregnated Hytrel	3507N46	000000
		54 mm	45 mm	Continuous, Forward/Reverse, Start/Stop	14 mm, 19 mm, 20 mm, 22 mm	6953N111	000000	3,600	80	0.015"	1°	Metal-Impregnated Buna-N	3507N39	00000	3,600	240	0.015"	1°	Metal-Impregnated Hytrel	3507N44	00000
		64 mm	54 mm	Continuous, Forward/Reverse, Start/Stop	20 mm, 22 mm, 24 mm	6953N181	000000	3,600	185	0.015"	1°	Metal-Impregnated Buna-N	3507N4	00000	3,600	565	0.015"	1°	Metal-Impregnated Hytrel	3507N45	000000
		89 mm	65 mm	Continuous, Forward/Reverse, Start/Stop	20 mm, 24 mm, 25 mm	6953N281	000000	3,600	415	0.015"	1°	Metal-Impregnated Buna-N	3507N41	00000	3,600	1,245	0.015"	1°	Metal-Impregnated Hytrel	3507N46	000000

Machinable-Bore Flexible Shaft Couplings


Hubs and Spider Shown Assembled	(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

Splined-to-Keyed Flexible Shaft Couplings


Hubs and Spider Shown Assembled	(Each Component Sold Separately)

Diameter

Connect splined shafts to keyed shafts. These couplings are commonly used to connect hydraulic pumps, compressors, and other heavy duty equipment, which often have splined shafts, to electric motors and other components that often have keyed shafts. They have a splined hub on one side and a keyed hub on the other. A spider cushion in the middle damps vibration, absorbs shock loads, and adjusts for misalignment. Because the hubs interlock with the spider, these couplings will continue to work even if the spider breaks or wears away. This fail-safe design gives you time to shut down your power source before damage occurs to other components. Lubrication is not required.

A complete coupling consists of two hubs and one spider. All components are sold separately.

Splined Iron Hubs and Buna-N Spiders—For Forward/Reverse, Start/Stop Motion

Buna-N—Buna-N spiders are best for high-speed systems and jobs with frequent starting, stopping, and reversing. The most commonly used spider material, Buna-N absorbs vibration better than other materials but cannot handle as much torque. It won't break down when exposed to oil and chemicals.

Hubs							Keyed Iron Hubs			Buna-N Spiders
												Misalignment Capability
Overall Lg.	OD	Pitch	Pressure Angle	Choose an SAE Spline Size (Diameter X × Diameter Y)		Each	Choose a Shaft Diameter		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
2 3/16"	2 7/64"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754")	9843T101	000000	3/8", 1/2", 5/8", 3/4", 1"	3451N801	000000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	000000
2 7/8"	2 17/32"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877")	9843T301	00000	1/2", 5/8", 3/4", 1", 1 1/8"	3451N802	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000
4 1/2"	3 3/4"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877"), C (1 1/4" × 1.087"), D (1 3/4" × 1.506"), E (1 3/4" × 1.506")	9843T601	000000	5/8", 3/4", 1", 1 1/8", 1 1/4", 1 1/2", 1 3/4"	3451N803	00000	5,000	1,240	0.015"	1°	-40 to 212	Buna-N	6408K81	00000

Splined Iron Hubs and Polyurethane Rubber Spiders—For Continuous Motion

Polyurethane Rubber—Use polyurethane spiders for high-torque, continuous-motion applications where vibration is a concern. They absorb vibration better than Hytrel spiders but are not as resistant to oil and chemicals. They're not for use in applications with frequent starting, stopping, and reversing.

Hubs							Keyed Iron Hubs			Polyurethane Spiders
												Misalignment Capability
Overall Lg.	OD	Pitch	Pressure Angle	Choose an SAE Spline Size (Diameter X × Diameter Y)		Each	Choose a Shaft Diameter		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
2 3/16"	2 7/64"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754")	9843T102	000000	3/8", 1/2", 5/8", 3/4", 1"	3451N804	000000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	000000
2 7/8"	2 17/32"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877")	9843T302	00000	1/2", 5/8", 3/4", 1", 1 1/8"	3451N805	00000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000
4 1/2"	3 3/4"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877"), C (1 1/4" × 1.087"), D (1 3/4" × 1.506"), E (1 3/4" × 1.506")	9843T602	000000	5/8", 3/4", 1", 1 1/8", 1 1/4", 1 1/2", 1 3/4"	3451N806	00000	3,600	1,860	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K19	000000

Splined Iron Hubs and Hytrel Spiders—For Continuous Motion

Hytrel—Hytrel spiders handle the highest torque of any of our spiders and have the best resistance to oil and chemicals. However, they don't compensate for as much misalignment and are not recommended for applications with frequent starting, stopping, and reversing.

Hubs							Keyed Iron Hubs			Hytrel Spiders
												Misalignment Capability
Overall Lg.	OD	Pitch	Pressure Angle	Choose an SAE Spline Size (Diameter X × Diameter Y)		Each	Choose a Shaft Diameter		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each
2 3/16"	2 7/64"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754")	9843T103	000000	3/8", 1/2", 5/8", 3/4", 1"	3451N807	000000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	000000
2 7/8"	2 17/32"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877")	9843T303	00000	1/2", 5/8", 3/4", 1", 1 1/8"	3451N808	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000
4 1/2"	3 3/4"	0.5"	30°	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877"), C (1 1/4" × 1.087"), D (1 3/4" × 1.506"), E (1 3/4" × 1.506")	9843T603	000000	5/8", 3/4", 1", 1 1/8", 1 1/4", 1 1/2", 1 3/4"	3451N809	00000	3,600	3,705	0.015"	0.5°	-55 to 245	Hytrel	6408K98	000000

Splined Flexible Shaft Couplings


Components of a Coupling Shown Assembled	(Each Component Sold Separately)	Diameter

For use with splined shafts, which are commonly found in gearboxes and pumps, these couplings are capable of transmitting more torque than couplings for round and keyed shafts. They 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 (each component sold separately). Hubs fasten onto your shafts without damaging them. Tighten the clamping screws to secure.

Buna-N—Buna-N spiders provide good vibration damping and chemical resistance.

Hytrel—Hytrel spiders provide fair vibration damping and excellent chemical resistance.

Polyurethane Rubber—Polyurethane spiders provide fair vibration damping and good chemical resistance.

Hubs									Buna-N Spiders								Hytrel Spiders								Polyurethane Spiders
											Misalignment Capability								Misalignment Capability								Misalignment Capability
Overall Lg.	OD	For Shaft Type	Pitch	Pressure Angle	For Rotary Motion	Choose an SAE Spline Size (Diameter X × Diameter Y)		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	Temp. Range, ° F	Spider Material		Each







			Iron Hubs

			2 3/16"	2 7/64"	Splined	0.5"	30°	Continuous, Forward/Reverse, Start/Stop	A (5/8" × 0.509"), B (7/8" × 0.754")	9843T1	000000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	000000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	000000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	000000


			2 9/16"	2 7/64"	Splined	0.5"	30°	Continuous, Forward/Reverse, Start/Stop	A (5/8" × 0.509"), B (7/8" × 0.754")	9843T2	00000	9,000	140	0.015"	1°	-40 to 212	Buna-N	6408K75	00000	3,600	400	0.015"	0.5°	-55 to 245	Hytrel	6408K95	00000	3,600	210	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K13	00000
			2 7/8"	2 17/32"	Splined	0.5"	30°	Continuous, Forward/Reverse, Start/Stop	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877")	9843T3	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000
			3 1/2"	2 17/32"	Splined	0.5"	30°	Continuous, Forward/Reverse, Start/Stop	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877")	9843T4	00000	7,000	315	0.015"	1°	-40 to 212	Buna-N	6408K77	00000	3,600	790	0.015"	0.5°	-55 to 245	Hytrel	6408K96	000000	3,600	475	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K15	00000
			4 1/4"	3 21/64"	Splined	0.5"	30°	Continuous, Forward/Reverse, Start/Stop	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877"), C (1 1/4" × 1.087")	9843T5	000000	5,000	790	0.015"	1°	-40 to 212	Buna-N	6408K79	00000	3,600	2,265	0.015"	0.5°	-55 to 245	Hytrel	6408K97	000000	3,600	1,185	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K17	000000
			4 1/2"	3 3/4"	Splined	0.5"	30°	Continuous, Forward/Reverse, Start/Stop	A (5/8" × 0.509"), B (7/8" × 0.754"), BB (1" × 0.877"), C (1 1/4" × 1.087"), D (1 3/4" × 1.506"), E (1 3/4" × 1.506")	9843T6	000000	5,000	1,240	0.015"	1°	-40 to 212	Buna-N	6408K81	00000	3,600	3,705	0.015"	0.5°	-55 to 245	Hytrel	6408K98	000000	3,600	1,860	0.015"	1°	-30 to 160	Polyurethane Rubber	2410K19	000000