Bushings for Spline Shafts

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Shaft Type

Round with Support Rail

Splined

Square

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System of Measurement

Diameter

Shaft Diameter

Length

Overall Length

Construction

Component

SAE Spline Size

Material

Iron

Stainless Steel

Steel

Maximum Torque

Less than 10,000 in·lbf

10,000 in·lbf to 19,999 in·lbf

20,000 in·lbf to 29,999 in·lbf

30,000 in·lbf to 39,999 in·lbf

40,000 in·lbf or greater

Flange OD

For Rotary Motion

Shaft Mount Type

Ball Material

Number of Splines

For Shaft Misalignment Type

Bearing Material

Bearing Type

DFARS Specialty Metals

Exempt

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

REACH

Compliant

Export Control Classification Number (ECCN)

RoHS

68 Products

Mounted Linear Bearings for Ball Splines

A flange with mounting holes makes it easy to attach a load to these bearings. Create a compact linear and rotary motion system for robots and other applications requiring complex, fast movements, by combining them with ball splines. These bearings move smoothly and precisely even at high speeds along ball splines while grooves on the ball spline transmit rotary power. Clip a retaining ring (not included) into the groove on these bearings to position them in your system.

Steel Bearings


		For 4 Splines

												Groove, mm
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	Flange OD, mm	Bolt Circle Dia., mm	OD, mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque, in·lbf	Max. Static Torque, in·lbf	Max. Temp., ° F	With Retaining Ring Grooves	Wd.	Dia.	No. of Mounting Holes		Each



	6	4	25	30	22	14	270	510	13	21	176	Yes	1.25	13.7	4	61145K41	0000000


	8	4	25	32	24	16	325	645	18	32	176	Yes	1.25	15.6	4	61145K42	000000
	10	4	33	42	32	21	610	1,100	38	72	176	Yes	1.65	20.5	4	61145K43	000000
	13	4	36	43	33	24	600	1,050	185	346	176	Yes	1.3	22.7	4	61145K111	00000
	16	4	50	50	40	31	1,350	2,500	531	973	176	Yes	1.6	29.4	4	61145K112	000000
	18.2	4	60	51	40	32	1,750	2,500	734	1,177	176	Yes	3	31.3	4	61145K46	000000
	20	4	63	58	45	35	2,000	3,650	929	1,717	176	Yes	2	33	4	61145K113	000000
	23	4	70	60	47	37	2,750	3,600	1,433	2,115	176	Yes	3.5	36.1	4	61145K47	000000
	25	4	71	65	52	42	2,850	5,250	1,672	3,062	176	Yes	2.5	39.5	4	61145K114	000000
	28	4	80	70	54	45	4,150	5,200	2,557	3,646	176	Yes	4	43.9	4	61145K48	000000
	30	4	80	75	60	47	4,150	5,200	2,716	3,885	176	Yes	3	44	4	61145K115	000000


	37.4	4	100	90	72	60	6,900	8,400	5,637	7,806	176	Yes	5	58.6	4	61145K49	000000
	40	4	100	100	82	64	6,900	8,400	5,964	8,266	176	Yes	4	60	4	61145K116	000000

Keyless Locking Rigid Shaft Couplings for Overhung Loads

Support the weight of a motor and transfer torque to another shaft at the same time with these couplings. Often used to hang motors from conveyor belts and other driven equipment, or to connect long sections of shafts, these couplings eliminate the need for support brackets. Use a torque arm to prevent hanging motors from spinning.

The clamping screws on the coupling face squeeze two outer collars against an inner ring, pressing it tight against shafts to lock them together. This ring-locking mechanism leaves no room for backlash, meaning that all of the turning force created by the motor is passed on to the second shaft. These couplings grip shafts of any shape, so you can install them onto existing keyways and splines without using a key.

To install these couplings, use a torque wrench to tighten each screw to the fastener tightening torque listed for each coupling size. To remove, gradually loosen each screw in sequence until you can slide the coupling on the shaft. Warning: Do not remove any clamping screws from the coupling until the outer collars are separated from the inner ring. The ring is under tension, and a sudden release of the collars can cause serious injury.

Overhung load capacity is the amount of downward force that a coupling can withstand from a motor or other object that it is supporting. To calculate the overhung load, measure the distance from the center of the coupling to the center of gravity of the motor. Multiply that distance by the combined weight of the motor and the portion of the shaft between the coupling and the motor. Do not exceed the overhung load capacity for a coupling.

Steel

Image of Product. Front orientation. Rigid Shaft Couplings. Keyless Locking Rigid Shaft Couplings for Overhung Loads .

	Overall Lg.	OD	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Overhung Load Cap., in·lbf	For Rotary Motion		Each
For Keyed, Round, and Splined Shafts



	1 1/4"	1 7/8"	3"	10,000	8,435	104	2,105	Forward/Reverse, Start/Stop, Continuous	3456N11	0000000


	1 3/8"	1 7/8"	3"	10,000	9,285	104	2,320	Forward/Reverse, Start/Stop, Continuous	3456N12	000000
	1 1/2"	2 3/16"	3 3/4"	8,000	17,160	264	4,290	Forward/Reverse, Start/Stop, Continuous	3456N13	000000
	1 3/4"	2 3/16"	3 3/4"	8,000	20,025	264	5,005	Forward/Reverse, Start/Stop, Continuous	3456N14	000000
	2"	2 11/16"	4 7/16"	7,700	32,685	264	8,170	Forward/Reverse, Start/Stop, Continuous	3456N15	000000
	2 1/4"	3 1/16"	4 3/4"	7,500	44,135	264	11,030	Forward/Reverse, Start/Stop, Continuous	3456N16	000000
	2 1/2"	3 1/16"	4 3/4"	7,500	49,040	264	12,260	Forward/Reverse, Start/Stop, Continuous	3456N17	000000

Linear Bearings for Ball Splines

Combine these bearings with a ball spline to create a compact linear and rotary motion system for applications with fast, complex movements, such as robotics. These bearings move smoothly and precisely even at high speeds along ball splines while grooves on the ball spline transmit rotary power. Clip a retaining ring into the groove on these bearings to position them in your system. Use the keyway and included machine key for attaching your load.

Steel Bearings


	For 4 Splines

										Groove, mm			Keyway, mm
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	OD, mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque, in·lbf	Max. Static Torque, in·lbf	Max. Temp., ° F	With Retaining Ring Grooves	Wd.	Dia.	Includes	Lg.	Wd.	Dp.		Each



	6	4	25	14	270	510	13	21	176	Yes	1.3	13.3	Machine Key	10.5	2.5	1.2	61145K31	000000


	8	4	25	16	325	645	18	32	176	Yes	1.3	15.3	Machine Key	10.5	2.5	1.2	61145K32	00000
	10	4	33	21	610	1,100	38	72	176	Yes	1.7	20	Machine Key	13	3	1.5	61145K33	00000
	13	4	36	24	600	1,050	185	346	176	Yes	1.3	22.7	Machine Key	15	3	1.5	61145K12	00000
	16	4	50	31	1,350	2,500	531	973	176	Yes	1.6	29.4	Machine Key	17.5	3.5	2	61145K13	00000
	18.2	4	60	32	1,750	2,500	734	1,177	176	Yes	3.1	30.2	Machine Key	26	4	2.5	61145K36	000000
	25	4	71	42	2,850	5,250	1,672	3,062	176	Yes	2.5	39.5	Machine Key	36	4	2.5	61145K15	000000
	28	4	80	45	4,150	5,200	2,557	3,646	176	Yes	4.15	42.6	Machine Key	41	7	4	61145K38	000000
	30	4	80	47	4,150	5,200	2,716	3,885	176	Yes	3	44	Machine Key	42	4	2.5	61145K16	000000
	40	4	100	64	6,900	8,400	5,964	8,266	176	Yes	4	60	Machine Key	52	6	3.5	61145K17	000000

Stainless Steel Bearings


	For 4 Splines

Stainless steel bearings are more corrosion resistant than steel bearings.

										Groove, mm			Keyway, mm
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	OD, mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque, in·lbf	Max. Static Torque, in·lbf	Max. Temp., ° F	With Retaining Ring Grooves	Wd.	Dia.	Includes	Lg.	Wd.	Dp.		Each



	6	4	25	14	270	510	13	21	176	Yes	0.6	13.4	Machine Key	10.5	2.5	1.2	61145K23	0000000


	13	4	36	24	600	1,050	185	346	176	Yes	1.3	22.7	Machine Key	15	3	1.5	61145K26	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

Splined-to-Keyed Flexible Shaft Couplings


	(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	00000	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