Linear/Rotary Bearings | McMaster-Carr

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Length

With End Seals

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Dynamic Load Capacity

Less than 500 lb.

500 lb. to 999 lb.

1,000 lb. to 1,999 lb.

2,000 lb. to 2,999 lb.

Lubrication

For Housing ID

12.000 mm to 12.018 mm

15.000 mm to 15.018 mm

17.000 mm to 17.018 mm

19.000 mm to 19.021 mm

21.000 mm to 21.021 mm

23.0000 mm to 23.0210 mm

24.000 mm to 24.021 mm

28.0000 mm to 28.0210 mm

32.0000 mm to 32.0250 mm

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Retaining Ring Groove End-to-End Length

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

With Retaining Ring Grooves

Yes

Maximum Rotation Speed

64 Products

Rotary and Linear Ball Bearings


	Fixed Alignment With End Seals	Fixed Alignment Without End Seals

Engineered for simultaneous linear and rotary motion, these bearings are used with round end-supported shafts. The fixed-alignment design is for use where shaft misalignment is unlikely. To install, slide bearings into a housing (not included) and secure with two retaining rings (sold individually).

Bearings without a maximum stroke length are only limited by the length of shaft they're used on.

With End Seals—Bearings with end seals keep lubricant in and dust out.

	Bearings												Retaining Rings
	For Shaft Dia.	Overall Lg.	For Housing ID	Retaining Ring Groove End-to-End Lg.	Dynamic Load Cap., lb.	Dynamic Rotary Load Cap. @ Speed	Max. Rotation Speed, rpm	Max. Temp., ° F	Max. Stroke Lg., mm	For Shaft Material		Each	Pkg. Qty.		Pkg.
Fixed Alignment







				Steel Bearings with End Seals

				3/8"	7/8"	0.6250" to 0.6255"	0.64"	70	29 lb. @ 500 rpm	3,600	200	—	Stainless Steel, Steel	6485K11	000000	1	9968K23	00000


				1/2"	1 1/4"	0.8750" to 0.8755"	0.967"	185	76 lb. @ 500 rpm	3,600	200	—	Stainless Steel, Steel	6485K12	00000	1	9968K24	0000
				5/8"	1 1/2"	1.1250" to 1.1255"	1.112"	280	116 lb. @ 500 rpm	3,600	200	—	Stainless Steel, Steel	6485K31	00000	1	9968K25	0000
				3/4"	1 5/8"	1.2500" to 1.2505"	1.174"	325	133 lb. @ 500 rpm	3,600	200	—	Stainless Steel, Steel	6485K14	000000	1	9968K26	0000
				1"	2 1/4"	1.5625" to 1.5630"	1.761"	450	185 lb. @ 500 rpm	3,600	200	—	Stainless Steel, Steel	6485K15	000000	1	9968K27	0000
				1 1/4"	2 5/8"	2.0000" to 2.0010"	2.011"	600	246 lb. @ 500 rpm	3,600	200	—	Stainless Steel, Steel	6485K19	000000	1	9968K28	0000
				1 1/2"	3"	2.3750" to 2.3760"	2.422"	935	383 lb. @ 500 rpm	3,600	200	—	Stainless Steel, Steel	6485K17	000000	1	9968K29	0000
				2"	4"	3.0000" to 3.0010"	3.206"	1,300	549 lb. @ 500 rpm	3,600	200	—	Stainless Steel, Steel	6485K2	000000	1	9968K31	00000
				8 mm	24 mm	15.0000 mm to 15.0180 mm	15.3 mm	75	31 lb. @ 500 rpm	5,000	200	14	Stainless Steel, Steel	6485K23	00000	1	9968K53	0000
				10 mm	30 mm	19.0000 mm to 19.0210 mm	18.5 mm	140	59 lb. @ 500 rpm	5,000	200	16	Stainless Steel, Steel	6485K24	00000	1	9968K54	0000
				12 mm	32 mm	23.0000 mm to 23.0210 mm	20.1 mm	240	99 lb. @ 500 rpm	5,000	200	18	Stainless Steel, Steel	6485K25	00000	1	9968K55	0000


				16 mm	37 mm	28.0000 mm to 28.0210 mm	24.1 mm	265	110 lb. @ 500 rpm	5,000	200	26	Stainless Steel, Steel	6485K26	00000	1	9968K56	0000
				20 mm	45 mm	32.0000 mm to 32.0250 mm	30.8 mm	280	117 lb. @ 500 rpm	5,000	200	36	Stainless Steel, Steel	6485K27	00000	1	9968K57	0000
				30 mm	65 mm	45.0000 mm to 45.0250 mm	50.1 mm	670	278 lb. @ 500 rpm	5,000	200	68	Stainless Steel, Steel	6485K28	00000	1	9968K58	0000
				40 mm	80 mm	60.0000 mm to 60.0300 mm	64.9 mm	925	384 lb. @ 500 rpm	5,000	200	91	Stainless Steel, Steel	6485K3	00000	1	9968K61	0000




						Steel Bearings without End Seals

						2 1/2"	5"	3.7500" to 3.7510"	3.99"	1,800	750 lb. @ 500 rpm	2,400	200	—	Stainless Steel, Steel	6485K21	000000	1	9968K79	00000

High-Speed Ultra-Thin Linear Sleeve Bearings

Use these ultra-thin sleeve bearings in high-speed applications where clearance is a concern. They have a ceramic liner to achieve high speeds and allow rapid acceleration and deceleration. Pair them with round end-supported shafts. These fixed-alignment bearings are for use where shaft misalignment is unlikely. To install, slide them into a housing (not included).

Fixed Alignment

										Temp., ° F
	For Shaft Dia., mm	Shaft Clearance, mm	Overall Lg., mm	OD, mm	For Housing ID	With Retaining Ring Grooves	With End Seals	Dynamic Linear Load Cap. @ Speed	Static Load Cap., lb.	Min.	Max.	For Shaft Material		Each
Ceramic-Lined 6061 Aluminum Bearings



		6	0.038	22	12	12.000 mm to 12.018 mm	No	No	70 lb. @ 100 fpm	760	-200	400	Stainless Steel, Steel	8324N11	000000


		8	0.038	24	15	15.000 mm to 15.018 mm	No	No	80 lb. @ 100 fpm	1,100	-200	400	Stainless Steel, Steel	8324N12	00000
		10	0.038	26	17	17.000 mm to 17.018 mm	No	No	250 lb. @ 100 fpm	1,500	-200	400	Stainless Steel, Steel	8324N13	00000
		12	0.038	28	19	19.000 mm to 19.021 mm	No	No	250 lb. @ 100 fpm	1,950	-200	400	Stainless Steel, Steel	8324N14	00000
		14	0.038	28	21	21.000 mm to 21.021 mm	No	No	300 lb. @ 100 fpm	2,250	-200	400	Stainless Steel, Steel	8324N15	00000
		16	0.05	30	24	24.000 mm to 24.021 mm	No	No	350 lb. @ 100 fpm	2,750	-200	400	Stainless Steel, Steel	8324N16	00000
		25	0.05	40	35	35.000 mm to 35.025 mm	No	No	600 lb. @ 100 fpm	5,800	-200	400	Stainless Steel, Steel	8324N18	00000

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

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