Bearings for Spline Shafts

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Round with Support Rail

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Less than 1,000 lb.

1,000 lb. to 9,999 lb.

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Number of Splines

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Spline Length

Spline Diameter

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54 Products

About Linear Bearings

For Four 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.

Stainless steel bearings are more corrosion resistant than steel bearings.

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. Those with a step-down end have a shoulder near the end to stop gears, sprockets, and bearings.

Steel Ball Bearings

For Four Splines

										Groove			Keyway
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	OD, mm	Dynamic Load Capacity, lbs.	Static Load Capacity, lbs.	Max. Dynamic Torque, in.-lbs.	Max. Static Torque, in.-lbs.	Max. Temp., °F	With Retaining Ring Grooves	Wd., mm	Dia., mm	Includes	Lg., mm	Wd., mm	Dp., mm		Each
6	4	25	14	270	510	13	21	176°	Yes	1.3	13.3	Machine Key	10.5	2.5	1.2	00000000	000000
8	4	25	16	325	645	18	32	176°	Yes	1.3	15.3	Machine Key	10.5	2.5	1.2	00000000	00000
10	4	33	21	610	1,100	38	72	176°	Yes	1.7	20	Machine Key	13	3	1.5	00000000	00000
13	4	36	24	600	1,050	185	346	176°	Yes	1.3	22.7	Machine Key	15	3	1.5	00000000	00000
16	4	50	31	1,350	2,500	531	973	176°	Yes	1.6	29.4	Machine Key	17.5	3.5	2	00000000	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	00000000	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	00000000	000000
28	4	80	45	4,150	5,200	2,557	3,646	176°	Yes	4.15	42.6	Machine Key	41	7	4	00000000	000000
30	4	80	47	4,150	5,200	2,716	3,885	176°	Yes	3	44	Machine Key	42	4	2.5	00000000	000000
40	4	100	64	6,900	8,400	5,964	8,266	176°	Yes	4	60	Machine Key	52	6	3.5	00000000	000000

Stainless Steel Ball Bearings

For Four Splines

										Groove			Keyway
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	OD, mm	Dynamic Load Capacity, lbs.	Static Load Capacity, lbs.	Max. Dynamic Torque, in.-lbs.	Max. Static Torque, in.-lbs.	Max. Temp., °F	With Retaining Ring Grooves	Wd., mm	Dia., mm	Includes	Lg., mm	Wd., mm	Dp., mm		Each
6	4	25	14	270	510	13	21	176°	Yes	0.6	13.4	Machine Key	10.5	2.5	1.2	00000000	0000000
13	4	36	24	600	1,050	185	346	176°	Yes	1.3	22.7	Machine Key	15	3	1.5	00000000	000000

Steel Splines

Splined on Both Ends

Splined End × Step-Down End

Four Splines

					Step
Dia., mm	No. of Splines	Lg., mm	Spline Lg., mm	Root Dia., mm	Dia., mm	Lg., mm	Material		Each
Splined on Both Ends
6	4	150	150	5.3	__	__	52100 Alloy Steel	00000000	0000000
6	4	200	200	5.3	__	__	52100 Alloy Steel	000000000	000000
6	4	300	300	5.3	__	__	52100 Alloy Steel	000000000	000000
8	4	150	150	7.2	__	__	52100 Alloy Steel	00000000	000000
8	4	200	200	7.2	__	__	52100 Alloy Steel	000000000	000000
10	4	200	200	9	__	__	52100 Alloy Steel	00000000	000000
10	4	300	300	9	__	__	52100 Alloy Steel	000000000	000000
10	4	600	600	9	__	__	52100 Alloy Steel	000000000	000000
13	4	200	200	11.7	__	__	52100 Alloy Steel	000000000	00000
13	4	500	500	11.7	__	__	52100 Alloy Steel	000000000	000000
13	4	700	700	11.7	__	__	52100 Alloy Steel	000000000	000000
16	4	200	200	14.2	__	__	52100 Alloy Steel	000000000	000000
16	4	700	700	14.2	__	__	52100 Alloy Steel	000000000	000000
25	4	200	200	22.4	__	__	52100 Alloy Steel	000000000	000000
25	4	500	500	22.4	__	__	52100 Alloy Steel	000000000	000000
30	4	300	300	26.8	__	__	52100 Alloy Steel	000000000	000000
30	4	1,000	1,000	26.8	__	__	52100 Alloy Steel	000000000	000000
30	4	2,000	2,000	26.8	__	__	52100 Alloy Steel	000000000	00000000
40	4	400	400	35.5	__	__	52100 Alloy Steel	000000000	000000
40	4	700	700	35.5	__	__	52100 Alloy Steel	000000000	000000
Splined End × Step-Down End
18.2	4	350	200	16.4	15	150	52100 Alloy Steel	00000000	000000
28	4	450	300	24.8	25	150	52100 Alloy Steel	00000000	000000

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 Ball Bearings

For Four Splines

												Groove
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	Flange OD, mm	Bolt Circle Dia., mm	OD, mm	Dynamic Load Capacity, lbs.	Static Load Capacity, lbs.	Max. Dynamic Torque, in.-lbs.	Max. Static Torque, in.-lbs.	Max. Temperature, ° F	With Retaining Ring Grooves	Wd., mm	Dia., mm	Number of Mounting Holes		Each
6	4	25	30	22	14	270	510	13	21	176°	Yes	1.25	13.7	4	00000000	000000
8	4	25	32	24	16	325	645	18	32	176°	Yes	1.25	15.6	4	00000000	00000
10	4	33	42	32	21	610	1,100	38	72	176°	Yes	1.65	20.5	4	00000000	000000
13	4	36	43	33	24	600	1,050	185	346	176°	Yes	1.3	22.7	4	000000000	00000
16	4	50	50	40	31	1,350	2,500	531	973	176°	Yes	1.6	29.4	4	000000000	000000
18.2	4	60	51	40	32	1,750	2,500	734	1,177	176°	Yes	3	31.3	4	00000000	000000
20	4	63	58	45	35	2,000	3,650	929	1,717	176°	Yes	2	33	4	000000000	000000
23	4	70	60	47	37	2,750	3,600	1,433	2,115	176°	Yes	3.5	36.1	4	00000000	000000
25	4	71	65	52	42	2,850	5,250	1,672	3,062	176°	Yes	2.5	39.5	4	000000000	000000
28	4	80	70	54	45	4,150	5,200	2,557	3,646	176°	Yes	4	43.9	4	00000000	000000
30	4	80	75	60	47	4,150	5,200	2,716	3,885	176°	Yes	3	44	4	000000000	000000
37.4	4	100	90	72	60	6,900	8,400	5,637	7,806	176°	Yes	5	58.6	4	00000000	000000
40	4	100	100	82	64	6,900	8,400	5,964	8,266	176°	Yes	4	60	4	000000000	000000

Steel Splines

Splined on Both Ends

Splined End × Step-Down End

Four Splines

					Step
Dia., mm	No. of Splines	Lg., mm	Spline Lg., mm	Root Dia., mm	Dia., mm	Lg., mm	Material		Each
Splined on Both Ends
6	4	150	150	5.3	__	__	52100 Alloy Steel	00000000	0000000
6	4	200	200	5.3	__	__	52100 Alloy Steel	000000000	000000
6	4	300	300	5.3	__	__	52100 Alloy Steel	000000000	000000
8	4	150	150	7.2	__	__	52100 Alloy Steel	00000000	000000
8	4	200	200	7.2	__	__	52100 Alloy Steel	000000000	000000
10	4	200	200	9	__	__	52100 Alloy Steel	00000000	000000
10	4	300	300	9	__	__	52100 Alloy Steel	000000000	000000
10	4	600	600	9	__	__	52100 Alloy Steel	000000000	000000
13	4	200	200	11.7	__	__	52100 Alloy Steel	000000000	00000
13	4	500	500	11.7	__	__	52100 Alloy Steel	000000000	000000
13	4	700	700	11.7	__	__	52100 Alloy Steel	000000000	000000
16	4	200	200	14.2	__	__	52100 Alloy Steel	000000000	000000
16	4	700	700	14.2	__	__	52100 Alloy Steel	000000000	000000
20	4	200	200	17.9	__	__	52100 Alloy Steel	000000000	000000
20	4	2,000	2,000	17.9	__	__	52100 Alloy Steel	000000000	000000
25	4	200	200	22.4	__	__	52100 Alloy Steel	000000000	000000
25	4	500	500	22.4	__	__	52100 Alloy Steel	000000000	000000
30	4	300	300	26.8	__	__	52100 Alloy Steel	000000000	000000
30	4	1,000	1,000	26.8	__	__	52100 Alloy Steel	000000000	000000
30	4	2,000	2,000	26.8	__	__	52100 Alloy Steel	000000000	00000000
40	4	400	400	35.5	__	__	52100 Alloy Steel	000000000	000000
40	4	700	700	35.5	__	__	52100 Alloy Steel	000000000	000000
Splined End × Step-Down End
18.2	4	350	200	16.4	15	150	52100 Alloy Steel	00000000	000000
23	4	350	200	20.6	20	150	52100 Alloy Steel	00000000	000000
28	4	450	300	24.8	25	150	52100 Alloy Steel	00000000	000000
37.4	4	550	400	33.1	30	150	52100 Alloy Steel	00000000	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.	No. of	Lg.	Direction	ID, mm	Lg., mm	Root Dia., mm	OD, mm	Overall Lg., mm	Dynamic Load Cap., lbs.	Static Load Cap., lbs.	OD, mm	Overall Lg., mm	Dynamic Load Cap., lbs.	Static Load Cap., lbs.	Max. Dynamic Torque, in.-lbs.	Temp. Range, ° F		Each
Metric—1055 Carbon Steel
8mm Dia. (Tolerance: -0.015mm to 0mm)
200 mm	4	180 mm	Right Hand	3	200	7.44	19	28.5	240	400	16	25	330	580	17	5° to 176°	0000000	000000000
10mm Dia. (Tolerance: -0.015mm to 0mm)
300 mm	4	270 mm	Right Hand	4	300	9.27	23	34.5	380	600	21	33	600	1,100	34	5° to 176°	0000000	00000000
16mm Dia. (Tolerance: -0.018mm to 0mm)
500 mm	6	360 mm	Right Hand	11	500	15.15	32	40	870	1,610	31	50	1,590	2,830	277	5° to 176°	0000000	00000000