Ball Splines | McMaster-Carr

Filter by

Bearing Type

Shaft Motion

System of Measurement

Diameter

Shaft Type

Length

Overall Length

Edge Type

Dynamic Load Capacity

Number of Splines

Flange OD

Ball Material

Spline Bearing Type

Static Load Capacity

Spline Length

Material

Bearing Material

Spline Diameter

Bolt Circle Diameter

Travel Distance per Turn

Hardness

Forward

How can we improve?

54 Products

About Linear 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.

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

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

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.

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.

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

Steel Ball Bearings

For Four Splines

												Groove		Mounting Holes
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	No. of	Thread Size		Each
6	4	25	30	22	14	270	510	13	21	176°	Yes	1.25	13.7	4	M3 × 0.5 mm	00000000	000000
8	4	25	32	24	16	325	645	18	32	176°	Yes	1.25	15.6	4	M3 × 0.5 mm	00000000	00000
10	4	33	42	32	21	610	1,100	38	72	176°	Yes	1.65	20.5	4	M4 × 0.7 mm	00000000	000000
13	4	36	43	33	24	600	1,050	185	346	176°	Yes	1.3	22.7	4	M4 × 0.7 mm	000000000	00000
16	4	50	50	40	31	1,350	2,500	531	973	176°	Yes	1.6	29.4	4	M4 × 0.7 mm	000000000	000000
18.2	4	60	51	40	32	1,750	2,500	734	1,177	176°	Yes	3	31.3	4	M4 × 0.7 mm	00000000	000000
20	4	63	58	45	35	2,000	3,650	929	1,717	176°	Yes	2	33	4	M5 × 0.8 mm	000000000	000000
23	4	70	60	47	37	2,750	3,600	1,433	2,115	176°	Yes	3.5	36.1	4	M5 × 0.8 mm	00000000	000000
25	4	71	65	52	42	2,850	5,250	1,672	3,062	176°	Yes	2.5	39.5	4	M5 × 0.8 mm	000000000	000000
28	4	80	70	54	45	4,150	5,200	2,557	3,646	176°	Yes	4	43.9	4	M6 × 1 mm	00000000	000000
30	4	80	75	60	47	4,150	5,200	2,716	3,885	176°	Yes	3	44	4	M6 × 1 mm	000000000	000000
37.4	4	100	90	72	60	6,900	8,400	5,637	7,806	176°	Yes	5	58.6	4	M8 × 1.25 mm	00000000	000000
40	4	100	100	82	64	6,900	8,400	5,964	8,266	176°	Yes	4	60	4	M8 × 1.25 mm	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

Linear Bearings for Ball Splines

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.

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

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

Ball Splines and Bearings

Create a compact linear and rotary motion system for applications requiring complex, fast movements, such as robotics. The grooves on the ball splines transmit rotary power as ball bearings move smoothly and precisely along their length, even at high speeds.

Ball splines are alloy steel for high strength and wear resistance. They're hardened on the outside for additional wear resistance while the center is 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.

Bearings have a retaining ring groove, so they can be positioned in your system with a retaining ring (not included). Bearings with a keyway include a machine key for attaching your load. Flanged bearings have a surface with mounting holes for attaching your load. Stainless steel bearings are more corrosion resistant than steel bearings.

Ball Splines

Splined on Both Ends

Splined End × Step-Down End

Four Splines

				Spline			Step
Dia., mm	Dia. Tolerance, mm	Lg., mm	Lg. Tolerance, mm	Lg., mm	No. of	Root Dia., mm	Dia., mm	Dia. Tolerance, mm	Lg., mm	Surface Smoothness, microinch	Edge Type	Hardness Rating	Hardness	Heat Treatment		Each
Metric—52100 Alloy Steel
Splined on Both Ends
6	-0.012 to 0	150	-0.7874 to 0.7874	150	4	5.3	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	00000000	0000000
6	-0.01 to 0	200	-0.05 to 0.05	200	4	5.3	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
6	-0.01 to 0	300	-0.05 to 0.05	300	4	5.3	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
8	-0.015 to 0	150	-0.7874 to 0.7874	150	4	7.2	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	00000000	000000
8	-0.01 to 0	200	-0.05 to 0.05	200	4	7.2	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
10	-0.015 to 0	200	-0.7874 to 0.7874	200	4	9	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	00000000	000000
10	-0.02 to 0	300	-0.05 to 0.05	300	4	9	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
10	-0.02 to 0	600	-0.08 to 0.08	600	4	9	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
13	-0.02 to 0	200	-0.05 to 0.05	200	4	11.7	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	00000
13	-0.02 to 0	500	-0.08 to 0.08	500	4	11.7	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
13	-0.02 to 0	700	-0.08 to 0.08	700	4	11.7	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
16	-0.02 to 0	200	-0.05 to 0.05	200	4	14.2	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
16	-0.02 to 0	700	-0.08 to 0.08	700	4	14.2	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
20	-0.02 to 0	200	-0.05 to 0.05	200	4	17.9	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
20	-0.02 to 0	2,000	-0.08 to 0.08	2,000	4	17.9	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
25	-0.02 to 0	200	-0.05 to 0.05	200	4	22.4	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
25	-0.02 to 0	500	-0.08 to 0.08	500	4	22.4	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
30	-0.02 to 0	300	-0.05 to 0.05	300	4	26.8	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
30	-0.02 to 0	1,000	-0.08 to 0.08	1,000	4	26.8	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
30	-0.02 to 0	2,000	-0.08 to 0.08	2,000	4	26.8	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	00000000
40	-0.02 to 0	400	-0.05 to 0.05	400	4	35.5	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
40	-0.02 to 0	700	-0.08 to 0.08	700	4	35.5	__	__	__	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	000000000	000000
Splined End × Step-Down End
18.2	-0.021 to 0	350	-0.7874 to 0.7874	200	4	16.4	15	-0.018 to 0	150	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	00000000	000000
23	-0.021 to 0	350	-0.7874 to 0.7874	200	4	20.6	20	-0.021 to 0	150	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	00000000	000000
28	-0.021 to 0	450	-0.7874 to 0.7874	300	4	24.8	25	-0.021 to 0	150	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	00000000	000000
37.4	-0.025 to 0	550	-0.7874 to 0.7874	400	4	33.1	30	-0.021 to 0	150	16	Chamfered	Very Hard	Rockwell C60	Case Hardened	00000000	000000

Bearings

				Material						Keyway
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	OD, mm	Bearing	Ball	Dynamic Load Cap., lbs.	Max. Dynamic Torque, in.-lbs.	With Retaining Ring Grooves	Includes	Dp., mm	Lg., mm	Wd., mm		Each
6	4	25	14	Steel	Steel	270	13	Yes	Machine Key	1.2	10.5	2.5	00000000	000000
6	4	25	14	Stainless Steel	Stainless Steel	270	13	Yes	Machine Key	1.2	10.5	2.5	00000000	000000
8	4	25	16	Steel	Steel	325	18	Yes	Machine Key	1.2	10.5	2.5	00000000	00000
10	4	33	21	Steel	Steel	610	38	Yes	Machine Key	1.5	13	3	00000000	00000
13	4	36	24	Steel	Steel	600	185	Yes	Machine Key	1.5	15	3	00000000	00000
13	4	36	24	Stainless Steel	Stainless Steel	600	185	Yes	Machine Key	1.5	15	3	00000000	000000
16	4	50	31	Steel	Steel	1,350	531	Yes	Machine Key	2	17.5	3.5	00000000	00000
18.2	4	60	32	Steel	Steel	1,750	734	Yes	Machine Key	2.5	26	4	00000000	000000
25	4	71	42	Steel	Steel	2,850	1,672	Yes	Machine Key	2.5	36	4	00000000	000000
28	4	80	45	Steel	Steel	4,150	2,557	Yes	Machine Key	4	41	7	00000000	000000
30	4	80	47	Steel	Steel	4,150	2,716	Yes	Machine Key	2.5	42	4	00000000	000000
40	4	100	64	Steel	Steel	6,900	5,964	Yes	Machine Key	3.5	52	6	00000000	000000

Flanged Bearings

					Material					Mounting Hole
For Spline Dia., mm	For No. of Splines	Overall Lg., mm	Flange OD, mm	OD, mm	Bearing	Ball	Dynamic Load Cap., lbs.	Max. Dynamic Torque, in.-lbs.	With Retaining Ring Grooves	No. of	Thread Size		Each
6	4	25	30	14	Steel	Steel	270	13	Yes	4	M3 × 0.5 mm	00000000	000000
8	4	25	32	16	Steel	Steel	325	18	Yes	4	M3 × 0.5 mm	00000000	00000
10	4	33	42	21	Steel	Steel	610	38	Yes	4	M4 × 0.7 mm	00000000	000000
13	4	36	43	24	Steel	Steel	600	185	Yes	4	M4 × 0.7 mm	000000000	00000
16	4	50	50	31	Steel	Steel	1,350	531	Yes	4	M4 × 0.7 mm	000000000	000000
18.2	4	60	51	32	Steel	Steel	1,750	734	Yes	4	M4 × 0.7 mm	00000000	000000
20	4	63	58	35	Steel	Steel	2,000	929	Yes	4	M5 × 0.8 mm	000000000	000000
23	4	70	60	37	Steel	Steel	2,750	1,433	Yes	4	M5 × 0.8 mm	00000000	000000
25	4	71	65	42	Steel	Steel	2,850	1,672	Yes	4	M5 × 0.8 mm	000000000	000000
28	4	80	70	45	Steel	Steel	4,150	2,557	Yes	4	M6 × 1 mm	00000000	000000
30	4	80	75	47	Steel	Steel	4,150	2,716	Yes	4	M6 × 1 mm	000000000	000000
37.4	4	100	90	60	Steel	Steel	6,900	5,637	Yes	4	M8 × 1.25 mm	00000000	000000
40	4	100	100	64	Steel	Steel	6,900	5,964	Yes	4	M8 × 1.25 mm	000000000	000000

Email Us

About Linear Bearings

Ball Screw/Splines and Bearings

Mounted Linear Bearings for Ball Splines

Linear Bearings for Ball Splines

Ball Splines and Bearings