One-Way Needle Bearings | McMaster-Carr

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System of Measurement

Shaft Diameter

Width

Bearing Construction

For Housing ID

Spring Material

Maximum Torque

10 ft·lbf to 19.9 ft·lbf

20 ft·lbf to 24.9 ft·lbf

25 ft·lbf to 49.9 ft·lbf

50 ft·lbf or greater

Cage Material

Acetal

Nylon

Maximum Rotation Speed

Rotation Speed

10,000 rpm to 12,999 rpm

13,000 rpm to 17,999 rpm

18,000 rpm to 19,999 rpm

20,000 rpm or greater

Torque

Less than 10 ft·lbf

10 ft·lbf to 19.9 ft·lbf

20 ft·lbf to 24.9 ft·lbf

25 ft·lbf to 49.9 ft·lbf

50 ft·lbf or greater

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

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

RoHS

REACH

Maximum Temperature

Minimum Temperature

Static Radial Load Capacity

Less than 1,000 lb.

1,000 lb. to 1,499 lb.

1,500 lb. to 1,999 lb.

2,000 lb. to 2,999 lb.

3,000 lb. or greater

Dynamic Radial Load Capacity

Less than 1,250 lb.

1,250 lb. to 1,499 lb.

1,500 lb. to 1,999 lb.

2,000 lb. to 2,549 lb.

2,550 lb. or greater

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36 Products

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One-Way Locking Needle-Roller Bearing Clutches

The needles in these bearings roll freely in one direction, but lock to transmit torque when the rotation of the shaft is reversed. Also known as drawn-cup roller clutches. An arrow on the lip indicates the rotational direction that locks the bearings.

Single-Row Bearing—Single-row bearings do not support loads from any direction. To support radial loads, use with our Needle-Roller Bearings.

Triple-Row Bearing—Triple-row bearings support radial loads.

301 Stainless Steel Springs—Bearings with 301 stainless steel springs handle higher temperatures than bearings with acetal springs.

					Radial Load Cap., lb.
	For Shaft Dia.	For Housing ID	Wd.	Ring Material	Dynamic	Static	Max. Rotation Speed, rpm	Max. Torque, ft·lbf	Lubrication	For Shaft Surface Smoothness, Ra, μin	Temp. Range, ° F		Each
Single-Row Bearing







				Acetal Springs

				1/8"	9/32"	1/4"	Steel	—	—	34,000	0.2	Required	16	-20 to 200	2489K21	000000


				1/4"	7/16"	1/2"	Steel	—	—	20,000	1.5	Required	16	-20 to 200	2489K22	00000
				3/8"	5/8"	1/2"	Steel	—	—	18,000	4	Required	16	-20 to 200	2489K23	00000
				1/2"	3/4"	1/2"	Steel	—	—	17,000	6.5	Required	16	-20 to 200	2489K24	00000
				5/8"	7/8"	5/8"	Steel	—	—	14,000	12	Required	16	-20 to 200	2489K5	00000
				3/4"	1"	5/8"	Steel	—	—	12,000	17	Required	16	-20 to 200	2489K6	00000
				1"	1 5/16"	5/8"	Steel	—	—	8,700	35	Required	16	-20 to 200	2489K7	00000




						301 Stainless Steel Springs

						1/4"	7/16"	1/2"	Steel	—	—	20,000	1.5	Required	16	-20 to 250	2489K28	00000


						3/8"	5/8"	1/2"	Steel	—	—	18,000	4	Required	16	-20 to 250	2489K29	00000
						1/2"	3/4"	1/2"	Steel	—	—	17,000	6.5	Required	16	-20 to 250	2489K31	00000
						5/8"	7/8"	5/8"	Steel	—	—	14,000	12	Required	16	-20 to 250	2489K12	00000
						3/4"	1"	5/8"	Steel	—	—	12,000	17	Required	16	-20 to 250	2489K13	00000
						1"	1 5/16"	5/8"	Steel	—	—	8,700	35	Required	16	-20 to 250	2489K14	00000




								Steel Springs

								6 mm	10 mm	12 mm	Steel	—	—	23,000	1.3	Required	16	10 to 150	6392K41	00000


								8 mm	12 mm	12 mm	Steel	—	—	17,000	2.3	Required	16	10 to 150	6392K42	00000
								10 mm	14 mm	12 mm	Steel	—	—	14,000	3.9	Required	16	10 to 150	6392K43	00000
								12 mm	18 mm	16 mm	Steel	—	—	11,000	9	Required	16	10 to 150	6392K44	00000
								14 mm	20 mm	16 mm	Steel	—	—	9,500	12	Required	16	10 to 150	6392K45	00000
								16 mm	22 mm	16 mm	Steel	—	—	8,500	15	Required	16	10 to 150	6392K46	00000
								18 mm	24 mm	16 mm	Steel	—	—	7,500	17	Required	16	10 to 150	6392K47	00000
								20 mm	26 mm	16 mm	Steel	—	—	7,000	21	Required	16	10 to 150	6392K48	00000
								25 mm	32 mm	20 mm	Steel	—	—	5,500	45	Required	16	10 to 150	6392K49	00000
								30 mm	37 mm	20 mm	Steel	—	—	4,500	65	Required	16	10 to 150	6392K51	00000
								35 mm	42 mm	20 mm	Steel	—	—	3,900	85	Required	16	10 to 150	6392K52	00000


								Triple-Row Bearing







												301 Stainless Steel Springs

												3/8"	5/8"	7/8"	Steel	1,350	1,100	18,000	4	Required	16	-20 to 250	1553N21	00000


1/2"	3/4"											7/8"	Steel	1,600	1,450	17,000	6.5	Required	16	-20 to 250	1553N22	00000
5/8"	7/8"											1"	Steel	1,800	1,800	14,000	12	Required	16	-20 to 250	1553N23	00000
3/4"	1"											1"	Steel	2,000	2,200	12,000	17	Required	16	-20 to 250	1553N24	00000
1"	1 5/16"	1.063"										Steel	3,450	3,950	8,700	35	Required	16	-20 to 250	1553N25	00000
8 mm	14 mm	20 mm	Steel									940	680	21,000	3.2	Required	16	-20 to 250	1553N11	00000
10 mm	16 mm	20 mm	Steel									1,050	850	19,000	4.2	Required	16	-20 to 250	1553N12	00000
12 mm	18 mm	26 mm	Steel									1,400	1,300	19,000	10	Required	16	-20 to 250	1553N13	00000
16 mm	22 mm	26 mm	Steel									1,450	1,600	14,000	16	Required	16	-20 to 250	1553N14	00000
20 mm	26 mm	26 mm	Steel									1,800	2,100	11,000	24	Required	16	-20 to 250	1553N15	00000
25 mm	32 mm	30 mm	Steel									2,500	2,900	8,700	50	Required	16	-20 to 250	1553N16	00000


30 mm	37 mm	30 mm	Steel									2,550	3,350	7,300	70	Required	16	-20 to 250	1553N17	000000