Polyurethane Spiders | McMaster-Carr

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169 Products

About Shaft Couplings

Hubs and Spider Shown Assembled

(Each Component Sold Separately)

Hubs, Split Spider, and Retaining Ring 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.

Stainless steel hubs have excellent corrosion resistance.

Buna-N spiders provide good vibration damping and chemical resistance. Hytrel spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders and split spiders provide fair vibration damping and good chemical resistance.

For technical drawings and 3-D models, click on a part number.

Iron Hubs and Buna-N Rubber Spiders

							Buna-N Rubber Spiders
Iron Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 1/8"	1 3/4"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	00000000	000000	11,000	90	0.015"	1°	-40° to 212°	0000000	000000
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", 12mm, 14mm, 15mm, 16mm, 19mm, 20mm, 22mm	0000000	00000	11,000	90	0.015"	1°	-40° to 212°	0000000	00000
2 5/32"	2 7/64"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	0000000	00000	9,000	140	0.015"	1°	-40° to 212°	0000000	00000
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", 12mm, 14mm, 15mm, 16mm, 18mm, 19mm, 20mm, 22mm, 24mm	0000000	00000	9,000	140	0.015"	1°	-40° to 212°	0000000	00000
2 1/2"	2 7/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	9,000	140	0.015"	1°	-40° to 212°	0000000	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", 19mm, 20mm, 24mm, 25mm, 28mm	0000000	00000	9,000	140	0.015"	1°	-40° to 212°	0000000	00000
2 27/32"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	7,000	315	0.015"	1°	-40° to 212°	0000000	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", 22mm, 24mm, 28mm	0000000	00000	7,000	315	0.015"	1°	-40° to 212°	0000000	00000
3 31/64"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	7,000	315	0.015"	1°	-40° to 212°	0000000	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", 24mm, 25mm, 28mm, 30mm	0000000	00000	7,000	315	0.015"	1°	-40° to 212°	0000000	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", 19mm, 20mm, 24mm, 25mm, 28mm, 30mm, 32mm, 38mm	0000000	00000	5,000	790	0.015"	1°	-40° to 212°	0000000	00000
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", 24mm, 38mm, 42mm	0000000	000000	5,000	1,240	0.015"	1°	-40° to 212°	0000000	00000

303 Stainless Steel Hubs and Buna-N Rubber Spiders

							Buna-N Rubber Spiders
303 Stainless Steel Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 1/8"	1 3/4"	Round	Forward/Reverse, Start/Stop	1/4"	00000000	0000000	11,000	90	0.015"	1°	-40° to 212°	0000000	000000
2 1/8"	1 3/4"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 7/8"	0000000	000000	11,000	90	0.015"	1°	-40° to 212°	0000000	00000
2 1/2"	2 7/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1", 1 1/8"	0000000	000000	9,000	140	0.015"	1°	-40° to 212°	0000000	00000
3 31/64"	2 35/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 7/8", 1", 1 1/8", 1 3/8"	0000000	000000	7,000	315	0.015"	1°	-40° to 212°	0000000	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"	0000000	000000	5,000	790	0.015"	1°	-40° to 212°	0000000	00000

Iron Hubs and Hytrel Rubber Spiders

							Hytrel Rubber Spiders
Iron Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 1/8"	1 3/4"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	00000000	000000	3,600	225	0.015"	0.5°	-55° to 245°	0000000	000000
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", 12mm, 14mm, 15mm, 16mm, 19mm, 20mm, 22mm	0000000	00000	3,600	225	0.015"	0.5°	-55° to 245°	0000000	00000
2 5/32"	2 7/64"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	0000000	00000	3,600	225	0.015"	0.5°	-55° to 245°	0000000	00000
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", 12mm, 14mm, 15mm, 16mm, 18mm, 19mm, 20mm, 22mm, 24mm	0000000	00000	3,600	400	0.015"	0.5°	-55° to 245°	0000000	00000
2 1/2"	2 7/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	3,600	400	0.015"	0.5°	-55° to 245°	0000000	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", 19mm, 20mm, 24mm, 25mm, 28mm	0000000	00000	3,600	400	0.015"	0.5°	-55° to 245°	0000000	00000
2 27/32"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	3,600	790	0.015"	0.5°	-55° to 245°	0000000	000000
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", 22mm, 24mm, 28mm	0000000	00000	3,600	790	0.015"	0.5°	-55° to 245°	0000000	000000
3 31/64"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	3,600	790	0.015"	0.5°	-55° to 245°	0000000	000000
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", 24mm, 25mm, 28mm, 30mm	0000000	00000	3,600	790	0.015"	0.5°	-55° to 245°	0000000	000000
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", 19mm, 20mm, 24mm, 25mm, 28mm, 30mm, 32mm, 38mm	0000000	00000	3,600	2,265	0.015"	0.5°	-55° to 245°	0000000	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", 24mm, 38mm, 42mm	0000000	000000	3,600	3,705	0.015"	0.5°	-55° to 245°	0000000	000000

303 Stainless Steel Hubs and Hytrel Rubber Spiders

							Hytrel Rubber Spiders
303 Stainless Steel Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 1/8"	1 3/4"	Round	Forward/Reverse, Start/Stop	1/4"	00000000	0000000	3,600	225	0.015"	0.5°	-55° to 245°	0000000	000000
2 1/8"	1 3/4"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 7/8"	0000000	000000	3,600	225	0.015"	0.5°	-55° to 245°	0000000	00000
2 1/2"	2 7/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1", 1 1/8"	0000000	000000	3,600	400	0.015"	0.5°	-55° to 245°	0000000	00000
3 31/64"	2 35/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 7/8", 1", 1 1/8", 1 3/8"	0000000	000000	3,600	790	0.015"	0.5°	-55° to 245°	0000000	000000
4 7/32"	3 21/64"	Keyed	Forward/Reverse, Start/Stop	1", 1 1/8", 1 3/8", 1 1/2", 1 5/8"	0000000	000000	3,600	2,265	0.015"	0.5°	-55° to 245°	0000000	000000

Iron Hubs and Polyurethane Spiders

							Polyurethane Spiders
Iron Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 1/8"	1 3/4"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	00000000	000000	3,600	135	0.015"	1°	-30° to 160°	0000000	000000
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", 12mm, 14mm, 15mm, 16mm, 19mm, 20mm, 22mm	0000000	00000	3,600	135	0.015"	1°	-30° to 160°	0000000	00000
2 5/32"	2 7/64"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	0000000	00000	3,600	210	0.015"	1°	-30° to 160°	0000000	00000
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", 12mm, 14mm, 15mm, 16mm, 18mm, 19mm, 20mm, 22mm, 24mm	0000000	00000	3,600	210	0.015"	1°	-30° to 160°	0000000	00000
2 1/2"	2 7/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	3,600	210	0.015"	1°	-30° to 160°	0000000	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", 19mm, 20mm, 24mm, 25mm, 28mm	0000000	00000	3,600	210	0.015"	1°	-30° to 160°	0000000	00000
2 27/32"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	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", 22mm, 24mm, 28mm	0000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	00000
3 31/64"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	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", 24mm, 25mm, 28mm, 30mm	0000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	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", 19mm, 20mm, 24mm, 25mm, 28mm, 30mm, 32mm, 38mm	0000000	00000	3,600	1,185	0.015"	1°	-30° to 160°	0000000	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", 24mm, 38mm, 42mm	0000000	000000	3,600	1,860	0.015"	1°	-30° to 160°	0000000	000000

303 Stainless Steel Hubs and Polyurethane Spiders

							Polyurethane Spiders
303 Stainless Steel Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 1/8"	1 3/4"	Round	Forward/Reverse, Start/Stop	1/4"	00000000	0000000	3,600	135	0.015"	1°	-30° to 160°	0000000	000000
2 1/8"	1 3/4"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 7/8"	0000000	000000	3,600	135	0.015"	1°	-30° to 160°	0000000	00000
2 1/2"	2 7/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1", 1 1/8"	0000000	000000	3,600	210	0.015"	1°	-30° to 160°	0000000	00000
3 31/64"	2 35/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 7/8", 1", 1 1/8", 1 3/8"	0000000	000000	3,600	475	0.015"	1°	-30° to 160°	0000000	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"	0000000	000000	3,600	1,185	0.015"	1°	-30° to 160°	0000000	000000

Iron Hubs, Polyurethane Split Spiders, and 347 Stainless Steel Retaining Rings

							Polyurethane Split Spiders
Iron Hubs									Misalignment Capability					347 Stainless Steel Retaining Rings
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each		Each
2 5/32"	2 7/64"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 7/16"	0000000	000000	9,200	670	0.03"	2°	-30° to 200°	0000000	000000	0000000	000000
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", 12mm, 14mm, 15mm, 16mm, 18mm, 19mm, 20mm, 22mm, 24mm	0000000	00000	9,200	670	0.03"	2°	-30° to 200°	0000000	00000	0000000	00000
2 1/2"	2 7/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	9,200	670	0.03"	2°	-30° to 200°	0000000	00000	0000000	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", 19mm, 20mm, 24mm, 25mm, 28mm	0000000	00000	9,200	670	0.03"	2°	-30° to 200°	0000000	00000	0000000	00000
2 27/32"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	7,700	1,110	0.03"	2°	-30° to 200°	0000000	000000	0000000	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", 22mm, 24mm, 28mm	0000000	00000	7,700	1,110	0.03"	2°	-30° to 200°	0000000	000000	0000000	00000
3 31/64"	2 35/64"	Round	Forward/Reverse, Start/Stop	7/16"	00000000	00000	7,700	1,110	0.03"	2°	-30° to 200°	0000000	000000	0000000	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", 24mm, 25mm, 28mm, 30mm	0000000	00000	7,700	1,110	0.03"	2°	-30° to 200°	0000000	000000	0000000	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", 19mm, 20mm, 24mm, 25mm, 28mm, 30mm, 32mm, 38mm	0000000	00000	5,900	2,180	0.03"	2°	-30° to 200°	0000000	000000	0000000	000000

303 Stainless Steel Hubs, Polyurethane Split Spiders, and 347 Stainless Steel Retaining Rings

							Polyurethane Split Spiders
303 Stainless Steel Hubs									Misalignment Capability					347 Stainless Steel Retaining Rings
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each		Each
2 1/2"	2 7/64"	Keyed	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1", 1 1/8"	0000000	0000000	9,200	670	0.03"	2°	-30° to 200°	0000000	000000	0000000	000000
3 31/64"	2 35/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 7/8", 1", 1 1/8", 1 3/8"	0000000	000000	7,700	1,110	0.03"	2°	-30° to 200°	0000000	000000	0000000	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"	0000000	000000	5,900	2,180	0.03"	2°	-30° to 200°	0000000	000000	0000000	000000

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 spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders provide fair vibration damping and good chemical resistance.

For technical drawings and 3-D models, click on a part number.

6026 Aluminum Hubs and Hytrel Rubber Spiders

						Hytrel Rubber Spiders
6026 Aluminum Hubs								Misalignment Capability
O'all Lg.	OD	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
7/8"	9/16"	Forward/Reverse, Start/Stop	1/8", 3/16", 1/4"	0000000	000000	27,000	42	0.002"	0.8°	-55° to 245°	0000000	000000
1 3/16"	51/64"	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 3/8"	0000000	00000	19,000	105	0.002"	0.8°	-55° to 245°	0000000	00000
1 11/32"	63/64"	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 3/8", 7/16"	0000000	00000	15,200	210	0.002"	0.8°	-55° to 245°	0000000	00000
1 25/64"	1 3/16"	Forward/Reverse, Start/Stop	3/16", 1/4", 3/8", 1/2", 5/8"	0000000	00000	12,700	280	0.002"	0.8°	-55° to 245°	0000000	00000

6026 Aluminum Hubs and Polyurethane Spiders

						Polyurethane Spiders
6026 Aluminum Hubs								Misalignment Capability
O'all Lg.	OD	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
7/8"	9/16"	Forward/Reverse, Start/Stop	1/8", 3/16", 1/4"	0000000	000000	27,000	21	0.004"	1°	-30° to 160°	0000000	00000
1 3/16"	51/64"	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 3/8"	0000000	00000	19,000	53	0.004"	1°	-30° to 160°	0000000	0000
1 11/32"	63/64"	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 3/8", 7/16"	0000000	00000	15,200	89	0.004"	1°	-30° to 160°	0000000	00000
1 25/64"	1 3/16"	Forward/Reverse, Start/Stop	3/16", 1/4", 3/8", 1/2", 5/8"	0000000	00000	12,700	130	0.004"	1°	-30° to 160°	0000000	0000

Machinable-Bore Flexible Shaft Couplings

(Each Component Sold Separately)

Hubs and Spider Shown Assembled

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.

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.

For technical drawings and 3-D models, click on a part number.

Iron Hubs and Polyurethane Spiders

Iron Hubs									Polyurethane Spiders
					For Set Screw						Misalignment Capability
For Shaft Dia.	Overall Lg.	OD	For Motion Type	Material	Type	Thread Size		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
1/4"-7/8"	2 1/8"	1 3/4"	Continuous	Sintered Iron	Cup Point	1/4"-20	00000000	000000	3,600	135	0.015"	1°	-30° to 160°	0000000	000000
1/4"-1"	2 5/32"	2 7/64"	Continuous	Sintered Iron	Cup Point	1/4"-20	00000000	00000	3,600	210	0.015"	1°	-30° to 160°	0000000	00000
7/16"-1 1/8"	2 1/2"	2 7/64"	Continuous	Sintered Iron	Cup Point	5/16"-18	00000000	00000	3,600	210	0.015"	1°	-30° to 160°	0000000	00000
7/16"-1 3/16"	2 27/32"	2 35/64"	Continuous	Sintered Iron	Cup Point	5/16"-18	00000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	00000
7/16"-1 3/8"	3 31/64"	2 35/64"	Continuous	Sintered Iron	Cup Point	5/16"-18	00000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	00000
5/8"-1 5/8"	4 7/32"	3 21/64"	Continuous	Sintered Iron	Cup Point	5/16"-18	00000000	00000	3,600	1,185	0.015"	1°	-30° to 160°	0000000	000000
5/8"-1 7/8"	4 1/2"	3 3/4"	Continuous	Sintered Iron	Cup Point	3/8"-16	00000000	000000	3,600	1,860	0.015"	1°	-30° to 160°	0000000	000000

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.

For technical drawings and 3-D models, click on a part number.

Hubs and Durometer 98A Spiders

							Durometer 98A Polyurethane Spiders
2024 Aluminum Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
1 7/64"	3/4"	Round	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 4mm, 5mm, 6mm, 7mm, 8mm	000000	000000	8,000	30	0.003"	0.8°	0° to 180°	0000000	000000
1 13/32"	1"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 1/2", 6mm, 7mm, 8mm, 9mm	000000	00000	8,000	150	0.003"	0.8°	0° to 180°	0000000	00000
1 13/32"	1"	Keyed	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm	0000000	00000	8,000	150	0.003"	0.8°	0° to 180°	0000000	00000
1 13/16"	1 5/16"	Round	Forward/Reverse, Start/Stop	5/16", 3/8", 1/2", 5/8", 8mm, 9mm	000000	00000	8,000	170	0.003"	0.8°	0° to 180°	0000000	00000
1 13/16"	1 5/16"	Keyed	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 14mm, 15mm, 16mm	0000000	00000	8,000	170	0.003"	0.8°	0° to 180°	0000000	00000
2 7/64"	1 5/8"	Round	Forward/Reverse, Start/Stop	3/8", 1/2", 5/8", 3/4"	0000000	00000	8,000	330	0.004"	0.8°	0° to 180°	0000000	00000
2 7/64"	1 5/8"	Keyed	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 14mm, 15mm, 16mm, 20mm	000000	00000	8,000	330	0.004"	0.8°	0° to 180°	0000000	00000
2 13/32"	2"	Round	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1"	0000000	00000	8,000	550	0.005"	0.8°	0° to 180°	0000000	00000
2 13/32"	2"	Keyed	Forward/Reverse, Start/Stop	12mm, 14mm, 15mm, 16mm, 20mm, 25mm	000000	00000	8,000	550	0.005"	0.8°	0° to 180°	0000000	00000
3 13/64"	2 1/4"	Round	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1"	0000000	000000	8,000	820	0.004"	0.8°	0° to 180°	0000000	00000
3 13/64"	2 1/4"	Keyed	Forward/Reverse, Start/Stop	14mm, 15mm, 16mm, 20mm, 25mm, 30mm	000000	000000	8,000	820	0.004"	0.8°	0° to 180°	0000000	00000
21.8mm	15mm	Round	Forward/Reverse, Start/Stop	3mm, 4mm, 5mm, 6mm	0000000	00000	8,000	16	0.002"	0.8°	0° to 180°	00000000	00000
35.3mm	25.4mm	Round	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm	0000000	00000	8,000	150	0.003"	0.8°	0° to 180°	0000000	00000
35.3mm	25.4mm	Keyed	Forward/Reverse, Start/Stop	8mm, 9mm	0000000	00000	8,000	150	0.003"	0.8°	0° to 180°	0000000	00000
44.5mm	33.3mm	Round	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm	0000000	00000	8,000	170	0.003"	0.8°	0° to 180°	0000000	00000
44.5mm	33.3mm	Keyed	Forward/Reverse, Start/Stop	8mm, 9mm	0000000	00000	8,000	170	0.003"	0.8°	0° to 180°	0000000	00000
53mm	41.3mm	Round	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm	0000000	00000	8,000	330	0.004"	0.8°	0° to 180°	0000000	00000
53mm	41.3mm	Keyed	Forward/Reverse, Start/Stop	13mm, 17mm, 18mm, 19mm	0000000	00000	8,000	330	0.004"	0.8°	0° to 180°	0000000	00000
61mm	50.8mm	Round	Forward/Reverse, Start/Stop	12mm, 15mm, 19mm, 22mm, 24mm, 25mm	0000000	000000	8,000	550	0.005"	0.8°	0° to 180°	0000000	00000
61mm	50.8mm	Keyed	Forward/Reverse, Start/Stop	17mm, 19mm, 22mm, 24mm	0000000	000000	8,000	550	0.005"	0.8°	0° to 180°	0000000	00000
80mm	57.2mm	Round	Forward/Reverse, Start/Stop	16mm, 19mm, 20mm, 22mm, 25mm, 30mm, 32mm	0000000	000000	8,000	820	0.004"	0.8°	0° to 180°	0000000	00000
80mm	57.2mm	Keyed	Forward/Reverse, Start/Stop	19mm, 22mm, 24mm, 28mm	0000000	000000	8,000	820	0.004"	0.8°	0° to 180°	0000000	00000

Hubs and Durometer 92A Spiders

							Durometer 92A Polyurethane Spiders
2024 Aluminum Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
1 7/64"	3/4"	Round	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 4mm, 5mm, 6mm, 7mm, 8mm	000000	000000	8,000	18	0.004"	0.9°	0° to 180°	0000000	000000
1 13/32"	1"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 1/2", 6mm, 7mm, 8mm, 9mm	000000	00000	8,000	58	0.005"	0.9°	0° to 180°	0000000	00000
1 13/32"	1"	Keyed	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm	0000000	00000	8,000	58	0.005"	0.9°	0° to 180°	0000000	00000
1 13/16"	1 5/16"	Round	Forward/Reverse, Start/Stop	5/16", 3/8", 1/2", 5/8", 8mm, 9mm	000000	00000	8,000	70	0.005"	0.9°	0° to 180°	0000000	00000
1 13/16"	1 5/16"	Keyed	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 14mm, 15mm, 16mm	0000000	00000	8,000	70	0.005"	0.9°	0° to 180°	0000000	00000
2 7/64"	1 5/8"	Round	Forward/Reverse, Start/Stop	3/8", 1/2", 5/8", 3/4"	0000000	00000	8,000	190	0.006"	0.9°	0° to 180°	0000000	00000
2 7/64"	1 5/8"	Keyed	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 14mm, 15mm, 16mm, 20mm	000000	00000	8,000	190	0.006"	0.9°	0° to 180°	0000000	00000
2 13/32"	2"	Round	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1"	0000000	00000	8,000	440	0.006"	0.9°	0° to 180°	0000000	00000
2 13/32"	2"	Keyed	Forward/Reverse, Start/Stop	12mm, 14mm, 15mm, 16mm, 20mm, 25mm	000000	00000	8,000	440	0.006"	0.9°	0° to 180°	0000000	00000
3 13/64"	2 1/4"	Round	Forward/Reverse, Start/Stop	1/2", 5/8", 3/4", 1"	0000000	000000	8,000	570	0.005"	0.9°	0° to 180°	0000000	00000
3 13/64"	2 1/4"	Keyed	Forward/Reverse, Start/Stop	14mm, 15mm, 16mm, 20mm, 25mm, 30mm	000000	000000	8,000	570	0.005"	0.9°	0° to 180°	0000000	00000
21.8mm	15mm	Round	Forward/Reverse, Start/Stop	3mm, 4mm, 5mm, 6mm	0000000	00000	8,000	10	0.004"	0.9°	0° to 180°	00000000	00000
35.3mm	25.4mm	Round	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm	0000000	00000	8,000	58	0.005"	0.9°	0° to 180°	0000000	00000
35.3mm	25.4mm	Keyed	Forward/Reverse, Start/Stop	8mm, 9mm	0000000	00000	8,000	58	0.005"	0.9°	0° to 180°	0000000	00000
44.5mm	33.3mm	Round	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm	0000000	00000	8,000	70	0.005"	0.9°	0° to 180°	0000000	00000
44.5mm	33.3mm	Keyed	Forward/Reverse, Start/Stop	8mm, 9mm	0000000	00000	8,000	70	0.005"	0.9°	0° to 180°	0000000	00000
53mm	41.3mm	Round	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 13mm, 14mm, 17mm, 18mm, 15mm, 16mm, 19mm, 20mm	0000000	00000	8,000	190	0.006"	0.9°	0° to 180°	0000000	00000
53mm	41.3mm	Keyed	Forward/Reverse, Start/Stop	13mm, 17mm, 18mm, 19mm	0000000	00000	8,000	190	0.006"	0.9°	0° to 180°	0000000	00000
61mm	50.8mm	Round	Forward/Reverse, Start/Stop	12mm, 15mm, 19mm, 22mm, 24mm, 25mm	0000000	000000	8,000	440	0.006"	0.9°	0° to 180°	0000000	00000
61mm	50.8mm	Keyed	Forward/Reverse, Start/Stop	17mm, 19mm, 22mm, 24mm	0000000	000000	8,000	440	0.006"	0.9°	0° to 180°	0000000	00000
80mm	57.2mm	Round	Forward/Reverse, Start/Stop	16mm, 19mm, 20mm, 22mm, 25mm, 30mm, 32mm	0000000	000000	8,000	570	0.005"	0.9°	0° to 180°	0000000	00000
80mm	57.2mm	Keyed	Forward/Reverse, Start/Stop	19mm, 22mm, 24mm, 28mm	0000000	000000	8,000	570	0.005"	0.9°	0° to 180°	0000000	00000

Hubs and Durometer 85A Spiders

							Durometer 85A Polyurethane Spiders
2024 Aluminum Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
1 7/64"	3/4"	Round	Forward/Reverse, Start/Stop	3/16", 1/4", 5/16", 4mm, 5mm, 6mm, 7mm, 8mm	000000	000000	8,000	10	0.005"	1°	0° to 180°	0000000	000000
1 13/32"	1"	Round	Forward/Reverse, Start/Stop	1/4", 5/16", 3/8", 1/2", 6mm, 7mm, 8mm, 9mm	000000	00000	8,000	30	0.006"	1°	0° to 180°	0000000	00000
1 13/32"	1"	Keyed	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm	0000000	00000	8,000	30	0.006"	1°	0° to 180°	0000000	00000
1 13/16"	1 5/16"	Round	Forward/Reverse, Start/Stop	5/16", 3/8", 1/2", 5/8", 8mm, 9mm	000000	00000	8,000	36	0.006"	1°	0° to 180°	0000000	00000
1 13/16"	1 5/16"	Keyed	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 14mm, 15mm, 16mm	0000000	00000	8,000	36	0.006"	1°	0° to 180°	0000000	00000
21.8mm	15mm	Round	Forward/Reverse, Start/Stop	3mm, 4mm, 5mm, 6mm	0000000	00000	8,000	4.8	0.005"	1°	0° to 180°	00000000	00000
35.3mm	25.4mm	Round	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm	0000000	00000	8,000	30	0.006"	1°	0° to 180°	0000000	00000
35.3mm	25.4mm	Keyed	Forward/Reverse, Start/Stop	8mm, 9mm	0000000	00000	8,000	30	0.006"	1°	0° to 180°	0000000	00000
44.5mm	33.3mm	Round	Forward/Reverse, Start/Stop	10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm	0000000	00000	8,000	36	0.006"	1°	0° to 180°	0000000	00000
44.5mm	33.3mm	Keyed	Forward/Reverse, Start/Stop	8mm, 9mm	0000000	00000	8,000	36	0.006"	1°	0° to 180°	0000000	00000

Set Screw Vibration-Damping Precision Flexible Shaft Couplings

Components of a Coupling Shown Assembled

(Each Component Sold Separately)

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).

For technical drawings and 3-D models, click on a part number.

2024 Aluminum Hubs and Durometer 98A Spiders

							Durometer 98A Polyurethane Spiders
2024 Aluminum Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
21mm	15mm	Round	Continuous, Forward/Reverse, Start/Stop	4mm, 5mm, 6mm	0000000	000000	8,000	16	0.002"	0.8°	-10° to 180°	00000000	000000
27mm	19mm	Round	Continuous, Forward/Reverse, Start/Stop	5mm, 6mm, 7mm, 8mm	0000000	00000	8,000	30	0.003"	0.8°	0° to 180°	0000000	00000
35mm	25mm	Round	Continuous, Forward/Reverse, Start/Stop	6mm, 8mm, 10mm, 11mm, 12mm	0000000	00000	8,000	150	0.003"	0.8°	0° to 180°	0000000	00000
35mm	25mm	Keyed	Continuous, Forward/Reverse, Start/Stop	10mm, 11mm	0000000	00000	8,000	150	0.003"	0.8°	0° to 180°	0000000	00000
44mm	33mm	Round	Continuous, Forward/Reverse, Start/Stop	8mm, 14mm	0000000	00000	8,000	170	0.003"	0.8°	0° to 180°	0000000	00000
44mm	33mm	Keyed	Continuous, Forward/Reverse, Start/Stop	14mm, 16mm	0000000	00000	8,000	170	0.003"	0.8°	0° to 180°	0000000	00000
53mm	41mm	Round	Continuous, Forward/Reverse, Start/Stop	12mm, 14mm, 18mm, 20mm	0000000	00000	8,000	330	0.004"	0.8°	0° to 180°	0000000	00000
53mm	41mm	Keyed	Continuous, Forward/Reverse, Start/Stop	12mm, 14mm, 16mm, 20mm	0000000	00000	8,000	330	0.004"	0.8°	0° to 180°	0000000	00000
61mm	50mm	Keyed	Continuous, Forward/Reverse, Start/Stop	18mm, 20mm, 24mm	0000000	000000	8,000	550	0.005"	0.8°	0° to 180°	0000000	00000
80mm	57mm	Keyed	Continuous, Forward/Reverse, Start/Stop	14mm, 20mm, 24mm, 28mm	0000000	000000	8,000	820	0.004"	0.8°	0° to 180°	0000000	00000

2024 Aluminum Hubs and Durometer 92A Spiders

							Durometer 92A Polyurethane Spiders
2024 Aluminum Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
21mm	15mm	Round	Continuous, Forward/Reverse, Start/Stop	4mm, 5mm, 6mm	0000000	000000	8,000	10	0.004"	0.9°	-10° to 180°	00000000	000000
27mm	19mm	Round	Continuous, Forward/Reverse, Start/Stop	5mm, 6mm, 7mm, 8mm	0000000	00000	8,000	18	0.004"	0.9°	0° to 180°	0000000	00000
35mm	25mm	Round	Continuous, Forward/Reverse, Start/Stop	6mm, 8mm, 10mm, 11mm, 12mm	0000000	00000	8,000	58	0.005"	0.9°	0° to 180°	0000000	00000
35mm	25mm	Keyed	Continuous, Forward/Reverse, Start/Stop	10mm, 11mm	0000000	00000	8,000	58	0.005"	0.9°	0° to 180°	0000000	00000
44mm	33mm	Round	Continuous, Forward/Reverse, Start/Stop	8mm, 14mm	0000000	00000	8,000	70	0.005"	0.9°	0° to 180°	0000000	00000
44mm	33mm	Keyed	Continuous, Forward/Reverse, Start/Stop	14mm, 16mm	0000000	00000	8,000	70	0.005"	0.9°	0° to 180°	0000000	00000
53mm	41mm	Round	Continuous, Forward/Reverse, Start/Stop	12mm, 14mm, 18mm, 20mm	0000000	00000	8,000	190	0.006"	0.9°	0° to 180°	0000000	00000
53mm	41mm	Keyed	Continuous, Forward/Reverse, Start/Stop	12mm, 14mm, 16mm, 20mm	0000000	00000	8,000	190	0.006"	0.9°	0° to 180°	0000000	00000
61mm	50mm	Keyed	Continuous, Forward/Reverse, Start/Stop	18mm, 20mm, 24mm	0000000	000000	8,000	440	0.006"	0.9°	0° to 180°	0000000	00000
80mm	57mm	Keyed	Continuous, Forward/Reverse, Start/Stop	14mm, 20mm, 24mm, 28mm	0000000	000000	8,000	570	0.005"	0.9°	0° to 180°	0000000	00000

2024 Aluminum Hubs and Durometer 85A Spiders

							Durometer 85A Polyurethane Spiders
2024 Aluminum Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
21mm	15mm	Round	Continuous, Forward/Reverse, Start/Stop	4mm, 5mm, 6mm	0000000	000000	8,000	4.8	0.005"	1°	-10° to 180°	00000000	000000
27mm	19mm	Round	Continuous, Forward/Reverse, Start/Stop	5mm, 6mm, 7mm, 8mm	0000000	00000	8,000	10	0.005"	1°	0° to 180°	0000000	00000
35mm	25mm	Round	Continuous, Forward/Reverse, Start/Stop	6mm, 8mm, 10mm, 11mm, 12mm	0000000	00000	8,000	30	0.006"	1°	0° to 180°	0000000	00000
35mm	25mm	Keyed	Continuous, Forward/Reverse, Start/Stop	10mm, 11mm	0000000	00000	8,000	30	0.006"	1°	0° to 180°	0000000	00000
44mm	33mm	Round	Continuous, Forward/Reverse, Start/Stop	8mm, 14mm	0000000	00000	8,000	36	0.006"	1°	0° to 180°	0000000	00000
44mm	33mm	Keyed	Continuous, Forward/Reverse, Start/Stop	14mm, 16mm	0000000	00000	8,000	36	0.006"	1°	0° to 180°	0000000	00000

6023 Aluminum Hubs and Durometer 98A Spiders

							Durometer 98A Polyurethane Spiders
6023 Aluminum Hubs									Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.		Each	Maximum Speed, rpm	Maximum Torque, in.-lbs.	Parallel	Angular	Temp Range, ° F		Each
1 3/8"	1 1/4"	__	Forward/Reverse, Start/Stop	1/4", 3/8", 1/2", 5/8"	00000000	000000	10,000	220	0.011"	1°	0 to 180° F	0000000	000000
2 39/64"	1 21/32"	Keyed	Forward/Reverse, Start/Stop	3/8", 1/2", 5/8", 3/4"	00000000	00000	9,000	300	0.011"	1°	0 to 180° F	0000000	00000
3 5/64"	2 13/64"	Keyed	Forward/Reverse, Start/Stop	5/8", 3/4", 1"	00000000	000000	8,000	1,060	0.011"	1°	0 to 180° F	0000000	00000
3 35/64"	2 39/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 1", 1 1/4", 1 1/2"	00000000	000000	7,000	2,830	0.011"	1°	0 to 180° F	0000000	00000

6023 Aluminum Hubs and Durometer 80A Polyurethane Spiders

6023 Aluminum Hubs								Durometer 80A Polyurethane Spiders
					Set Screw					Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Diameter	Material		Each	Maximum Speed, rpm	Maximum Torque, in.-lbs.	Parallel	Angular	Temp. Range, ° F		Each
1 3/8"	1 1/4"	__	Forward/Reverse, Start/Stop	1/4", 3/8", 1/2", 5/8"	Black Oxide Steel	00000000	000000	10,000	50	0.011"	1.2°	0 to 180° F	0000000	00000
2 39/64"	1 21/32"	Keyed	Forward/Reverse, Start/Stop	3/8", 1/2", 5/8", 3/4"	Black Oxide Steel	00000000	00000	9,000	105	0.011"	1.2°	0 to 180° F	0000000	0000
3 5/64"	2 13/64"	Keyed	Forward/Reverse, Start/Stop	5/8", 3/4", 1"	Black Oxide Steel	00000000	000000	8,000	305	0.011"	1.2°	0 to 180° F	0000000	00000
3 35/64"	2 39/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 1", 1 1/4", 1 1/2"	Black Oxide Steel	00000000	000000	7,000	750	0.011"	1.2°	0 to 180° F	0000000	00000

6023 Aluminum Hubs and Durometer 64D Spiders

6023 Aluminum Hubs								Durometer 64D Polyurethane Spiders
					Set Screw					Misalignment Capability
Overall Lg.	OD	For Shaft Type	For Motion Type	For Shaft Dia.	Material		Each	Max. Speed, rpm	Max Torque, in.-lbs.	Parallel	Angular	Temp. Range, ° F		Each
1 3/8"	1 1/4"	__	Forward/Reverse, Start/Stop	1/4", 3/8", 1/2", 5/8"	Black Oxide Steel	00000000	000000	10,000	280	0.011"	0.8°	0 to 180° F	0000000	00000
2 39/64"	1 21/32"	Keyed	Forward/Reverse, Start/Stop	3/8", 1/2", 5/8", 3/4"	Black Oxide Steel	00000000	00000	9,000	370	0.011"	0.8°	0 to 180° F	0000000	0000
3 5/64"	2 13/64"	Keyed	Forward/Reverse, Start/Stop	5/8", 3/4", 1"	Black Oxide Steel	00000000	000000	8,000	1,320	0.011"	0.8°	0 to 180° F	0000000	00000
3 35/64"	2 39/64"	Keyed	Forward/Reverse, Start/Stop	3/4", 1", 1 1/4", 1 1/2"	Black Oxide Steel	00000000	000000	7,000	3,540	0.011"	0.8°	0 to 180° F	0000000	00000

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 spiders provide good vibration damping and chemical resistance. Hytrel spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders provide fair vibration damping and good chemical resistance.

For technical drawings and 3-D models, click on a part number.

	Dia.
SAE Spline Size	(X)	(Y)
A	5/8"	0.509"
B	7/8"	0.754"
B-B	1"	0.877"
C	1 1/4"	1.087"
D	1 3/4"	1.506"
E	1 3/4"	1.506"

Iron Hubs and Buna-N Rubber Spiders

								Buna-N Rubber Spiders
Iron Hubs										Misalignment Capability
O'all Lg.	OD	Pitch	Pressure Angle	For Motion Type	Choose an SAE Spline Size		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 3/16"	2 7/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B	000000	000000	9,000	140	0.015"	1°	-40° to 212°	0000000	000000
2 9/16"	2 7/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B	000000	00000	9,000	140	0.015"	1°	-40° to 212°	0000000	00000
2 7/8"	2 17/32"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B	000000	00000	7,000	315	0.015"	1°	-40° to 212°	0000000	00000
3 1/2"	2 17/32"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B	000000	00000	7,000	315	0.015"	1°	-40° to 212°	0000000	00000
4 1/4"	3 21/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B, C	000000	00000	5,000	790	0.015"	1°	-40° to 212°	0000000	00000
4 1/2"	3 3/4"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B, C, D, E	000000	000000	5,000	1,240	0.015"	1°	-40° to 212°	0000000	00000

Iron Hubs and Hytrel Rubber Spiders

								Hytrel Rubber Spiders
Iron Hubs										Misalignment Capability
O'all Lg.	OD	Pitch	Pressure Angle	For Motion Type	Choose an SAE Spline Size		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 3/16"	2 7/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B	000000	000000	3,600	400	0.015"	0.5°	-55° to 245°	0000000	000000
2 9/16"	2 7/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B	000000	00000	3,600	400	0.015"	0.5°	-55° to 245°	0000000	00000
2 7/8"	2 17/32"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B	000000	00000	3,600	790	0.015"	0.5°	-55° to 245°	0000000	000000
3 1/2"	2 17/32"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B	000000	00000	3,600	790	0.015"	0.5°	-55° to 245°	0000000	000000
4 1/4"	3 21/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B, C	000000	00000	3,600	2,265	0.015"	0.5°	-55° to 245°	0000000	000000
4 1/2"	3 3/4"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B, C, D, E	000000	000000	3,600	3,705	0.015"	0.5°	-55° to 245°	0000000	000000

Iron Hubs and Polyurethane Spiders

								Polyurethane Spiders
Iron Hubs										Misalignment Capability
O'all Lg.	OD	Pitch	Pressure Angle	For Motion Type	Choose an SAE Spline Size		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 3/16"	2 7/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B	000000	000000	3,600	210	0.015"	1°	-30° to 160°	0000000	000000
2 9/16"	2 7/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B	000000	00000	3,600	210	0.015"	1°	-30° to 160°	0000000	00000
2 7/8"	2 17/32"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B	000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	00000
3 1/2"	2 17/32"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B	000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	00000
4 1/4"	3 21/64"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B, C	000000	00000	3,600	1,185	0.015"	1°	-30° to 160°	0000000	000000
4 1/2"	3 3/4"	0.5"	30°	Forward/Reverse, Start/Stop, Continuous	A, B, B-B, C, D, E	000000	000000	3,600	1,860	0.015"	1°	-30° to 160°	0000000	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.

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.

	Dia.
SAE Spline Size	(X)	(Y)
A	5/8"	0.509"
B	7/8"	0.754"
B-B	1"	0.877"
C	1 1/4"	1.087"
D	1 3/4"	1.506"
E	1 3/4"	1.506"

Iron Hubs and Polyurethane Spiders—For Continuous Motion

										Polyurethane Spiders
Splined Iron Hubs							Keyed Iron Hubs					Misalignment Capability
O'all Lg.	OD	Pitch	Pressure Angle	Choose an SAE Spline Size		Each	For Shaft Dia.		Each	Max. Speed, rpm	Max. Torque, in.-lbs.	Parallel	Angular	Temp. Range, °F		Each
2 3/16"	2 7/64"	0.5"	30°	A, B	00000000	000000	3/8", 1/2", 5/8", 3/4", 1"	00000000	000000	3,600	210	0.015"	1°	-30° to 160°	0000000	000000
2 7/8"	2 17/32"	0.5"	30°	A, B, B-B	00000000	00000	1/2", 5/8", 3/4", 1", 1 1/8"	00000000	00000	3,600	475	0.015"	1°	-30° to 160°	0000000	00000
4 1/2"	3 3/4"	0.5"	30°	A, B, B-B, C, D, E	00000000	000000	5/8", 3/4", 1", 1 1/8", 1 1/4", 1 1/2", 1 3/4"	00000000	00000	3,600	1,860	0.015"	1°	-30° to 160°	0000000	000000

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