Spline Bearings | McMaster-Carr

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147 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

52100 Alloy Steel Splines

Image of ProductInUse. Front orientation. Contains Annotated. Ball Splines and Bearings. Mounted Linear Bearings for Ball Splines, Splines.

Image of Product. Front orientation. ZoomedIn view. Contains MultipleImages. Ball Splines and Bearings. Mounted Linear Bearings for Ball Splines, Splines, Splined on Both Ends.

Splined on Both

Ends

Splined End ×

Step-Down End

4 Splines

Image of Attribute. Front orientation. ZoomedIn view. Contains Annotated. Mounted Linear Bearings for Ball Splines.

Splines are alloy steel for high strength and wear resistance. They're hardened only on the outside, so they stand up to repeated motion while keeping their center soft enough to absorb stress from shifting loads.

Step-Down End—Splines with a step-down end have a shoulder near the end to stop gears, sprockets, and bearings.

		Spline				Step, mm
	Dia., mm	Lg., mm	No. of	Lg., mm	Root Dia., mm	Dia.	Lg.		Each
Splined on Both Ends



		6	150	4	150	5.3	—	—	61145K61	0000000


		6	200	4	200	5.3	—	—	61145K136	000000
		6	300	4	300	5.3	—	—	61145K137	000000
		8	150	4	150	7.2	—	—	61145K62	000000
		8	200	4	200	7.2	—	—	61145K139	000000
		10	200	4	200	9	—	—	61145K63	000000
		10	300	4	300	9	—	—	61145K144	000000
		10	600	4	600	9	—	—	61145K147	000000
		13	200	4	200	11.7	—	—	61145K148	00000
		13	500	4	500	11.7	—	—	61145K149	000000
		13	700	4	700	11.7	—	—	61145K151	000000


		16	200	4	200	14.2	—	—	61145K154	000000
		16	700	4	700	14.2	—	—	61145K156	000000
		20	200	4	200	17.9	—	—	61145K161	000000
		20	2,000	4	2,000	17.9	—	—	61145K165	000000
		25	200	4	200	22.4	—	—	61145K166	000000
		25	500	4	500	22.4	—	—	61145K167	000000
		30	300	4	300	26.8	—	—	61145K172	000000
		30	1,000	4	1,000	26.8	—	—	61145K174	000000
		30	2,000	4	2,000	26.8	—	—	61145K176	00000000
		40	400	4	400	35.5	—	—	61145K177	000000


		40	700	4	700	35.5	—	—	61145K178	000000


		Splined End × Step-Down End



				18.2	200	4	350	16.4	15	150	61145K86	000000


				23	200	4	350	20.6	20	150	61145K87	000000
				28	300	4	450	24.8	25	150	61145K88	000000
				37.4	400	4	550	33.1	30	150	61145K89	000000

Sleeve Splines and Bearings

Often used in wet and dirty environments, these sleeve splines and bearings create a compact linear and rotary motion system. The grooves on the splines transmit rotary power as the sleeve bearing moves freely along their length. Sleeve bearings don't have moving parts that can be damaged from dirt and debris. And they don't need to be lubricated, making them overall lower maintenance than ball bearings.

Splines

Splines are PTFE coated to reduce friction, so bearings slide smoothly and last longer. They’re stainless steel, so they won’t rust.

	Spline
	Lg.	No. of	Lg.	Lg. Tolerance	Root Dia.	Material	Edge Type	Hardness Rating	Hardness		Each
1/4" Diameter (Tolerance: -0.002" to 0.002")



		12"	14	12"	0" to 0.25"	0.202"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N11	000000


		24"	14	24"	0" to 0.25"	0.202"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N12	000000
		36"	14	36"	0" to 0.25"	0.202"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N13	000000


		3/8" Diameter (Tolerance: -0.002" to 0.002")



				12"	16	12"	0" to 0.25"	0.306"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N14	00000


				24"	16	24"	0" to 0.25"	0.306"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N15	000000
				36"	16	36"	0" to 0.25"	0.306"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N16	000000


				1/2" Diameter (Tolerance: -0.002" to 0.002")



						12"	18	12"	0" to 0.25"	0.419"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N17	00000


						24"	18	24"	0" to 0.25"	0.419"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N18	000000
						36"	18	36"	0" to 0.25"	0.419"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N19	000000

Rounded Bearings

Plastic Bearing—Bearings are plastic with a bronze shell, so they won't rust.

No. of Splines	OD	Overall Lg.	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque	Max. Static Torque	Bearing Material	Shell Material		Each



1/4"	14	1/2"	3/4"	5	5	Not Rated	Not Rated	Plastic	Bronze	4134N31	000000


3/8"	16	5/8"	1"	10	10	Not Rated	Not Rated	Plastic	Bronze	4134N32	00000
1/2"	18	13/16"	1 1/2"	15	15	Not Rated	Not Rated	Plastic	Bronze	4134N33	00000

Externally Threaded Bearings

Threaded bearings allow you to mount your load directly to the bearing.

Plastic Bearing—Bearings are plastic with a bronze shell, so they won't rust.

No. of Splines	OD	Overall Lg.	Thread Size	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque	Max. Static Torque	Bearing Material	Shell Material		Each



1/4"	14	1/2"	3/4"	7/16"-20	5	5	Not Rated	Not Rated	Plastic	Bronze	4134N34	000000


3/8"	16	5/8"	1"	9/16"-20	10	10	Not Rated	Not Rated	Plastic	Bronze	4134N35	00000
1/2"	18	13/16"	1 1/2"	3/4"-20	15	15	Not Rated	Not Rated	Plastic	Bronze	4134N36	00000

Flanges

Flanges work with threaded bearings to give you a surface with mounting holes to attach your load.

	Flange				Mounting Hole
Thread Size	Thk.	OD	Bolt Circle Dia.	Material	No. of	Dia.	Mounting Fasteners Included		Each
7/16"-20	1/4"	1 3/16"	7/8"	Anodized Aluminum	4	0.144"	No	4134N51	000000
9/16"-20	3/8"	1 7/16"	1 1/16"	Anodized Aluminum	4	0.177"	No	4134N52	00000
3/4"-20	1/2"	1 15/16"	1 3/8"	Anodized Aluminum	4	0.266"	No	4134N53	00000

Anti-Backlash Externally Threaded Bearings

Anti-backlash bearings minimize the space (play) between the bearing and spline for more accurate, repeatable positioning.

Threaded bearings allow you to mount your load directly to the bearing.

Plastic Bearing—Bearings are plastic with a bronze shell, so they won't rust.

No. of Splines	OD	Overall Lg.	Thread Size	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque	Max. Static Torque	Bearing Material	Shell Material		Each



1/4"	14	1/2"	3/4"	7/16"-20	5	5	Not Rated	Not Rated	Plastic	Bronze	4134N41	000000


3/8"	16	5/8"	1"	9/16"-20	10	10	Not Rated	Not Rated	Plastic	Bronze	4134N42	00000
1/2"	18	13/16"	1 1/2"	3/4"-20	15	15	Not Rated	Not Rated	Plastic	Bronze	4134N43	00000

Flanges

Flanges work with threaded bearings to give you a surface with mounting holes to attach your load.

	Flange				Mounting Hole
Thread Size	Thk.	OD	Bolt Circle Dia.	Material	No. of	Dia.	Mounting Fasteners Included		Each
7/16"-20	1/4"	1 3/16"	7/8"	Anodized Aluminum	4	0.144"	No	4134N51	000000
9/16"-20	3/8"	1 7/16"	1 1/16"	Anodized Aluminum	4	0.177"	No	4134N52	00000
3/4"-20	1/2"	1 15/16"	1 3/8"	Anodized Aluminum	4	0.266"	No	4134N53	00000

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

Ball Screw/Splines and Bearings

From one compact system, transmit linear or rotary motion or both at once (sometimes called spiral motion). Because of these different motions, these ball screw/splines and bearings create efficient, fluid movements in complex automated applications, such as pick-and-place robots.

The ball bearings move smoothly and precisely, even at high speeds. They're powered independently, so you can drive one bearing at a time or both together to coordinate movements.

The ball screw/splines are hardened on the surface, so they stand up to repeated motion. They’re also hollow, so you can run electrical wiring, compressed air tubing, coolants, or lubricant through their center.

	Spline		Thread						Ball Screw Bearing				Ball Spline Bearing
	Lg., mm	No. of	Lg., mm	Direction, ° F	Thread Direction	ID, mm	Lg., mm	Root Dia., mm	OD, mm	Overall Lg., mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	OD, mm	Overall Lg., mm	Dynamic Load Cap., lb.	Static Load Cap., lb.	Max. Dynamic Torque, in·lbf		Each
1055 Carbon Steel







				8 mm Dia. (Tolerance: -0.015 mm to 0 mm)

				200	4	180	5 to 176	Right Hand	3	200	7.44	19	28.5	240	400	16	25	330	580	17	4049N11	000000000




						10 mm Dia. (Tolerance: -0.015 mm to 0 mm)

						300	4	270	5 to 176	Right Hand	4	300	9.27	23	34.5	380	600	21	33	600	1,100	34	4049N12	00000000




								16 mm Dia. (Tolerance: -0.018 mm to 0 mm)

								500	6	360	5 to 176	Right Hand	11	500	15.15	32	40	870	1,610	31	50	1,590	2,830	277	4049N13	00000000

6-Point Impact Sockets with Spline Drive

Attach these sockets to your spline-drive impact wrench. These tools are typically used where high torque is required, such as heavy equipment in the aerospace and automotive industries. The hex shape of the fastening end of these sockets achieves the best possible grip on hex fasteners to prevent rounding their points. These sockets are sturdier and have more give than manual-drive sockets, so they'll withstand the high torque and force of impact tools.

Black-Oxide Steel

Spline

Drive

		Clearance Dp.					Standard Clearance
	Drive Size	Nut	Bolt	OD	Socket Shape	For Drive Style	Overall Lg.		Each
No. 5 Spline Drive



		7/8"	9/16"	1 3/16"	2 3/8"	6-Point	External Hex	3 1/8"	7932N101	000000


		15/16"	9/16"	1 3/16"	2 3/8"	6-Point	External Hex	3 1/8"	7932N102	00000
		1"	3/4"	1 3/16"	2 3/8"	6-Point	External Hex	3 1/8"	7932N103	00000
		1 1/8"	1"	1 3/16"	2 3/8"	6-Point	External Hex	3 1/8"	7932N104	00000
		1 1/4"	1"	1 3/16"	2 3/8"	6-Point	External Hex	3 1/8"	7932N105	00000
		1 5/16"	11/16"	1 11/64"	2 3/8"	6-Point	External Hex	3 1/16"	7932N106	00000
		1 1/2"	11/16"	1 11/64"	2 5/8"	6-Point	External Hex	3 1/16"	7932N107	00000
		1 5/8"	11/16"	1 11/64"	2 3/4"	6-Point	External Hex	3 1/16"	7932N108	00000
		1 3/4"	1 21/32"	2 5/32"	2 7/8"	6-Point	External Hex	3 1/16"	7932N109	00000
		1 7/8"	1 9/16"	2 5/32"	3 1/64"	6-Point	External Hex	3 1/16"	7932N111	00000
		2"	1 43/64"	2 5/32"	3 9/64"	6-Point	External Hex	3 1/16"	7932N112	00000

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

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	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 Press-Fit Threaded Standoffs


		Fully Threaded	Partially Threaded

Create a secure, permanent hold on sheet metal panels. They're often used to mount access covers and shields onto enclosures. Splines bite into the panels so standoffs don't rotate. Also known as captive standoffs.

Corrosion-Resistant 18-8 Stainless Steel—The choice for wet and outdoor environments, these standoffs resist rusting. They're strong enough for most jobs, but won't withstand stress as well as steel.

	For Min. Panel Thk.	Threading	Thread Lg.	Min. Thread Lg.	PEM® Part No.	Specs. Met	Pkg. Qty.		Pkg.
Corrosion-Resistant 18-8 Stainless Steel







	4-40

	1/4"	0.219"	0.166"	0.06"	Fully Threaded	1/4"	—	KFSE-440-8	ASTM A582	25	92985A110	000000




			6-32

			1/4"	0.281"	0.213"	0.06"	Fully Threaded	1/4"	—	KFSE-632-8	ASTM A582	25	92985A120	00000


			3/8"	0.281"	0.213"	0.06"	Fully Threaded	3/8"	—	KFSE-632-12	ASTM A582	10	92985A130	00000
			1/2"	0.281"	0.213"	0.06"	Partially Threaded	—	3/8"	KFSE-632-16	ASTM A582	10	92985A140	00000

Miniature Splined Press-Fit Threaded Standoffs

Fully

Threaded

The smallest standoffs we offer. These press into unthreaded holes to create permanent connections without welding, tapping, or installing extra hardware. The raised splines prevent rotation, and a recessed head clinches material for a strong hold. A through hole allows installation from one side, making them ideal for compact electronics like laptops and handheld devices.

Wear-Resistant 400 Series Stainless Steel—These standoffs can grind against metal surfaces without denting or scratching. More corrosion resistant than steel.

	OD	Threading	Thread Lg.	For Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.
Wear-Resistant 400 Series Stainless Steel







			0-80

			3/32"	0.094"	Fully Threaded	3/32"	0.095"	ASTM A380	25	92985A811	00000


			1/8"	0.094"	Fully Threaded	1/8"	0.095"	ASTM A380	25	92985A812	0000




					2-56

					3/32"	0.124"	Fully Threaded	3/32"	0.125"	ASTM A380	25	92985A813	0000


					1/8"	0.124"	Fully Threaded	1/8"	0.125"	ASTM A380	25	92985A814	0000




							M1 × 0.25 mm

							2 mm	2.4 mm	Fully Threaded	2 mm	2.4 mm	ASTM A380	25	92985A815	00000


							3 mm	2.4 mm	Fully Threaded	3 mm	2.4 mm	ASTM A380	25	92985A816	00000




									M1.2 × 0.25 mm

									2 mm	2.4 mm	Fully Threaded	2 mm	2.4 mm	ASTM A380	10	92985A220	0000


									3 mm	2.4 mm	Fully Threaded	3 mm	2.4 mm	ASTM A380	10	92985A230	0000




											M1.4 × 0.3 mm

											2 mm	2.4 mm	Fully Threaded	2 mm	2.4 mm	ASTM A380	10	92985A240	0000


											3 mm	2.4 mm	Fully Threaded	3 mm	2.4 mm	ASTM A380	10	92985A250	0000




													M1.6 × 0.35 mm

													2 mm	2.4 mm	Fully Threaded	2 mm	2.4 mm	ASTM A380	25	92985A260	0000


													3 mm	2.4 mm	Fully Threaded	3 mm	2.4 mm	ASTM A380	25	92985A270	0000




													M2 × 0.4 mm

	2 mm												3.2 mm	Fully Threaded	2 mm	3.2 mm	ASTM A380	25	92985A817	0000


	3 mm	3.2 mm											Fully Threaded	3 mm	3.2 mm	ASTM A380	25	92985A818	0000

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