Ball Splines | McMaster-Carr

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54 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

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