McMaster-Carr

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Round	Round with Support Rail

Hex	Spline

Acme Lead Screw

	System of Measurement System of Measurement

Metric

	For Shaft Diameter For Shaft Diameter

	Housing Type Housing Type

	Flange Mount

	Linear Bearing Component Linear Bearing Component


Bearing	Bearing in Housing

	Bearing Type Bearing Type


Ball	Plain

	Overall Length Overall Length

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Not Required

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Fixed Alignment

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Steel

	Ball Material Ball Material

Steel

	For Number of Splines For Number of Splines


4	6

	Base Thickness Base Thickness

	Maximum Torque Maximum Torque

	Flange Shape Flange Shape

Round

	Bearing Material Bearing Material

Steel

	Replaceable Insert Bearing Replaceable Insert Bearing

	Mounting Hole Thread Size Mounting Hole Thread Size

	With Retaining Ring Grooves With Retaining Ring Grooves

	Number of Mounting Holes Number of Mounting Holes

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30 Products

About Linear Bearings

Linear Bearings for Spline Shafts

With a grooved inner diameter, these bearings are designed to work with splined shafts. Together, they transmit rotary power while allowing the bearing to move freely along the length of the shaft. All are for use where shaft misalignment is unlikely.

Also known as ball splines, ball bearings run with less friction than plain bearings, so they're smoother and more precise, even at high speeds. However, they don't transmit as much torque as plain bearings. They're commonly used for robotic systems and other automated applications that require complex, fast movements.

Plain bearings have evenly sized and spaced splines for transmitting high rotational loads, such as in hydraulic systems, drivetrains, and machine tools. They don't run as smoothly or as fast as ball bearings, though. All meet ISO 14-A (formerly DIN 5463-A) to ensure they work with shafts that meet ISO 14-B.

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

Steel Ball Bearings

Ball Bearing

For Four Splines

Fixed Alignment
For No. of Splines	For Shaft Dia., mm	Overall Lg., mm	OD, mm	Max. Torque, in.-lbs.	Max. Temperature, °F		Each
4	6	25	14	13	176°	00000000	000000
4	8	25	16	18	176°	00000000	00000
4	10	33	21	38	176°	00000000	00000
4	18.2	60	32	734	176°	00000000	000000
4	23	70	37	1,433	176°	00000000	000000
4	28	80	45	2,557	176°	00000000	000000
4	37.4	100	60	5,637	176°	00000000	000000

Steel Plain Bearings

Plain Bearing

For Six Splines

Fixed Alignment
For No. of Splines	For Shaft Dia., mm	Overall Lg., mm	OD, mm	Max. Torque, in.-lbs.	Max. Temperature, °F	Specifications Met		Each
6	20	45	32	911	212°	ISO 14-A, DIN 5463-A	000000000	0000000
6	25	55	40	1,902	212°	ISO 14-A, DIN 5463-A	000000000	000000
6	32	60	52	3,301	212°	ISO 14-A, DIN 5463-A	000000000	000000

Steel Spline Shafts

Splined on Both Ends

Splined End × Step-Down End

Four Splines

Six Splines

				Step
Dia., mm	Lg., mm	Spline Lg., mm	End Type	Dia., mm	Lg., mm	Specifications Met		Each
4 Splines
6	150	150	Splined End × Splined End	__	__	__	00000000	0000000
8	150	150	Splined End × Splined End	__	__	__	00000000	00000
10	200	200	Splined End × Splined End	__	__	__	00000000	00000
18.2	350	200	Splined End × Step-Down End	15	150	__	00000000	000000
23	350	200	Splined End × Step-Down End	20	150	__	00000000	000000
28	450	300	Splined End × Step-Down End	25	150	__	00000000	000000
37.4	550	400	Splined End × Step-Down End	30	150	__	00000000	000000
6 Splines
20	1,000	1,000	Splined End × Splined End	__	__	ISO 14-B, DIN 5463-B	000000000	000000
25	1,000	1,000	Splined End × Splined End	__	__	ISO 14-B, DIN 5463-B	000000000	000000
32	1,000	1,000	Splined End × Splined End	__	__	ISO 14-B, DIN 5463-B	000000000	000000

Mounted Linear Bearings for Spline Shafts

A flanged housing with mounting holes connects these bearings directly to your system. They have a grooved inner diameter that's designed to work with spline shafts. Together, they transmit rotary power while allowing the bearing to move freely along the length of the shaft. Wide and flat, the flange is especially useful for lifting and lowering loads on vertical shafts. All are for use where shaft misalignment is unlikely.

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

Steel Ball Bearings with Steel Housing

Ball Bearing

For Four Splines

								Mounting Holes
For No. of Splines	For Shaft Dia., mm	Overall Lg., mm	Flange OD, mm	Bolt Circle Dia., mm	OD, mm	Max. Torque, in.-lbs.	Max. Temperature, ° F	No. of	Thread Size		Each
Fixed Alignment
4	6	25	30	22	14	13	176°	4	M3 × 0.5	00000000	000000
4	8	25	32	24	16	18	176°	4	M3 × 0.5	00000000	00000
4	10	33	42	32	21	38	176°	4	M4 × 0.7	00000000	00000
4	18.2	60	51	40	32	734	176°	4	M4 × 0.7	00000000	000000
4	23	70	60	47	37	1,433	176°	4	M5 × 0.8	00000000	000000
4	28	80	70	54	45	2,557	176°	4	M6 × 1	00000000	000000
4	37.4	100	90	72	60	5,637	176°	4	M8 × 1.25	00000000	000000

Steel Plain Bearings with Steel Housing

Plain Bearing

For Six Splines

								Mounting Holes
For No. of Splines	For Shaft Dia., mm	Overall Lg., mm	Flange OD, mm	Bolt Circle Dia., mm	OD, mm	Max. Torque, in.-lbs.	Max. Temperature, ° F	No. of	Thread Size	Specifications Met		Each
Fixed Alignment
6	20	40	52	38	28	911	212°	4	M5 × 0.8	ISO 14-A, DIN 5463-A	000000000	0000000
6	25	50	62	48	34	1,902	212°	4	M6 × 1	ISO 14-A, DIN 5463-A	000000000	000000
6	32	60	70	56	42	3,301	212°	4	M6 × 1	ISO 14-A, DIN 5463-A	000000000	000000

Steel Spline Shafts

Splined on Both Ends

Splined End × Step-Down End

Four Splines

Six Splines

				Step
Dia., mm	Lg., mm	Spline Lg., mm	End Type	Dia., mm	Lg., mm	Specifications Met		Each
4 Splines
6	150	150	Splined End × Splined End	__	__	__	00000000	0000000
8	150	150	Splined End × Splined End	__	__	__	00000000	00000
10	200	200	Splined End × Splined End	__	__	__	00000000	00000
18.2	350	200	Splined End × Step-Down End	15	150	__	00000000	000000
23	350	200	Splined End × Step-Down End	20	150	__	00000000	000000
28	450	300	Splined End × Step-Down End	25	150	__	00000000	000000
37.4	550	400	Splined End × Step-Down End	30	150	__	00000000	000000
6 Splines
20	1,000	1,000	Splined End × Splined End	__	__	ISO 14-B, DIN 5463-B	000000000	000000
25	1,000	1,000	Splined End × Splined End	__	__	ISO 14-B, DIN 5463-B	000000000	000000
32	1,000	1,000	Splined End × Splined End	__	__	ISO 14-B, DIN 5463-B	000000000	000000

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