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About Ball and Roller Bearings
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One-Way Locking Needle-Roller Bearing Clutches
Single Row
Triple Row
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 bearings do not support loads from any direction. To support radial loads, use with our Needle-Roller Bearings.
Triple-row bearings support radial loads.
Bearings with 301 stainless steel springs handle higher temperatures than bearings with acetal springs.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Max. Torque, ft.-lbs. | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range, °F | Each | |
Single Row | ||||||||||||
Acetal Plastic Springs  | ||||||||||||
| 1/8" | 9/32" | 1/4" | Steel | __ | __ | 34,000 | 0.2 | Required | 16 | -20° to 200° | 0000000 | 000000 |
| 1/4" | 7/16" | 1/2" | Steel | __ | __ | 20,000 | 1.5 | Required | 16 | -20° to 200° | 0000000 | 00000 |
| 3/8" | 5/8" | 1/2" | Steel | __ | __ | 18,000 | 4 | Required | 16 | -20° to 200° | 0000000 | 00000 |
| 1/2" | 3/4" | 1/2" | Steel | __ | __ | 17,000 | 6.5 | Required | 16 | -20° to 200° | 0000000 | 00000 |
| 5/8" | 7/8" | 5/8" | Steel | __ | __ | 14,000 | 12 | Required | 16 | -20° to 200° | 000000 | 00000 |
| 3/4" | 1" | 5/8" | Steel | __ | __ | 12,000 | 17 | Required | 16 | -20° to 200° | 000000 | 00000 |
| 1" | 1 5/16" | 5/8" | Steel | __ | __ | 8,700 | 35 | Required | 16 | -20° to 200° | 000000 | 00000 |
301 Stainless Steel Springs | ||||||||||||
| 1/4" | 7/16" | 1/2" | Steel | __ | __ | 20,000 | 1.5 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 3/8" | 5/8" | 1/2" | Steel | __ | __ | 18,000 | 4 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 1/2" | 3/4" | 1/2" | Steel | __ | __ | 17,000 | 6.5 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 5/8" | 7/8" | 5/8" | Steel | __ | __ | 14,000 | 12 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 3/4" | 1" | 5/8" | Steel | __ | __ | 12,000 | 17 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 1" | 1 5/16" | 5/8" | Steel | __ | __ | 8,700 | 35 | Required | 16 | -20° to 250° | 0000000 | 00000 |
Steel Springs | ||||||||||||
| 6mm | 10mm | 12mm | Steel | __ | __ | 23,000 | 1.3 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 8mm | 12mm | 12mm | Steel | __ | __ | 17,000 | 2.3 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 10mm | 14mm | 12mm | Steel | __ | __ | 14,000 | 3.9 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 12mm | 18mm | 16mm | Steel | __ | __ | 11,000 | 9 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 14mm | 20mm | 16mm | Steel | __ | __ | 9,500 | 12 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 16mm | 22mm | 16mm | Steel | __ | __ | 8,500 | 15 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 18mm | 24mm | 16mm | Steel | __ | __ | 7,500 | 17 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 20mm | 26mm | 16mm | Steel | __ | __ | 7,000 | 21 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 25mm | 32mm | 20mm | Steel | __ | __ | 5,500 | 45 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 30mm | 37mm | 20mm | Steel | __ | __ | 4,500 | 65 | Required | 16 | 10° to 150° | 0000000 | 00000 |
| 35mm | 42mm | 20mm | Steel | __ | __ | 3,900 | 85 | Required | 16 | 10° to 150° | 0000000 | 00000 |
Triple Row | ||||||||||||
301 Stainless Steel Springs | ||||||||||||
| 3/8" | 5/8" | 7/8" | Steel | 1,350 | 1,100 | 18,000 | 4 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 1/2" | 3/4" | 7/8" | Steel | 1,600 | 1,450 | 17,000 | 6.5 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 5/8" | 7/8" | 1" | Steel | 1,800 | 1,800 | 14,000 | 12 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 3/4" | 1" | 1" | Steel | 2,000 | 2,200 | 12,000 | 17 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 1" | 1 5/16" | 1.063" | Steel | 3,450 | 3,950 | 8,700 | 35 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 8mm | 14mm | 20mm | Steel | 940 | 680 | 21,000 | 3.2 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 10mm | 16mm | 20mm | Steel | 1,050 | 850 | 19,000 | 4.2 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 12mm | 18mm | 26mm | Steel | 1,400 | 1,300 | 19,000 | 10 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 16mm | 22mm | 26mm | Steel | 1,450 | 1,600 | 14,000 | 16 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 20mm | 26mm | 26mm | Steel | 1,800 | 2,100 | 11,000 | 24 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 25mm | 32mm | 30mm | Steel | 2,500 | 2,900 | 8,700 | 50 | Required | 16 | -20° to 250° | 0000000 | 00000 |
| 30mm | 37mm | 30mm | Steel | 2,550 | 3,350 | 7,300 | 70 | Required | 16 | -20° to 250° | 0000000 | 00000 |