About Linear Bearings
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About Ball and Roller Bearings
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About Shaft Collars
Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
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Ball Bearings
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
For technical drawings and 3-D models, click on a part number.

Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
629 | 9mm | 26mm | 8mm | Steel | 1,000 | 430 | 34,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 00000 |
6000 | 10mm | 26mm | 8mm | Steel | 1,000 | 440 | 34,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 00000 |
6001 | 12mm | 28mm | 8mm | Steel | 1,100 | 530 | 32,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 00000 |
16002 | 15mm | 32mm | 8mm | Steel | 1,300 | 640 | 33,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
16004 | 20mm | 42mm | 8mm | Steel | 1,650 | 920 | 26,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
16005 | 25mm | 47mm | 8mm | Steel | 1,700 | 1,000 | 22,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
16100 | 10mm | 28mm | 8mm | Steel | 1,100 | 440 | 34,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
16101 | 12mm | 30mm | 8mm | Steel | 1,100 | 570 | 32,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |

Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
629-2Z | 9mm | 26mm | 8mm | Steel | 1,000 | 430 | 28,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
6000-2Z | 10mm | 26mm | 8mm | Steel | 1,000 | 440 | 28,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 0000 |
6001-2Z | 12mm | 28mm | 8mm | Steel | 1,100 | 530 | 26,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 0000 |
16002-2Z | 15mm | 32mm | 8mm | Steel | 1,300 | 640 | 33,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
16003-2Z | 17mm | 35mm | 8mm | Steel | 1,400 | 730 | 31,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
16004-2Z | 20mm | 42mm | 8mm | Steel | 1,550 | 910 | 14,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
16005-2Z | 25mm | 47mm | 8mm | Steel | 1,700 | 1,000 | 22,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
16100-2Z | 10mm | 28mm | 8mm | Steel | 1,650 | 920 | 26,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |

Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
629-2RS | 9mm | 26mm | 8mm | Steel | 1,000 | 430 | 19,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
6000-2RS | 10mm | 26mm | 8mm | Steel | 1,000 | 440 | 18,300 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 0000 |
6001-2RS | 12mm | 28mm | 8mm | Steel | 1,100 | 530 | 16,100 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 0000 |
Permanently Lubricated Ball Bearings

A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. Because it's solid, the lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
629 | 9mm | 26mm | 8mm | Steel | 790 | 490 | 17,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
6000 | 10mm | 26mm | 8mm | Steel | 860 | 350 | 16,500 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
6001 | 12mm | 28mm | 8mm | Steel | 970 | 420 | 15,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
Sealed | ||||||||||||
629-2RS | 9mm | 26mm | 8mm | Steel | 790 | 490 | 17,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
6000-2RS | 10mm | 26mm | 8mm | Steel | 860 | 350 | 16,500 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
6001-2RS | 12mm | 28mm | 8mm | Steel | 970 | 420 | 15,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
Precision Ball Bearings


For greater accuracy and higher speeds, these bearings are made to tighter tolerances than standard ball bearings.
Shielded bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants better than shielded bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | ||||||||||||
629-2Z | 9 | 26 | 8 | Steel | 1,050 | 440 | 30,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
6000-2Z | 10 | 26 | 8 | Steel | 1,050 | 440 | 34,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 00000 |
6001-2Z | 12 | 28 | 8 | Steel | 1,200 | 530 | 30,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 00000 |
Sealed | ||||||||||||
6000-2RS | 10 | 26 | 8 | Steel | 1,050 | 440 | 19,000 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 00000 |
6001-2RS | 12 | 28 | 8 | Steel | 1,200 | 530 | 17,000 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 00000 |
Stainless Steel Ball Bearings
Bearings are 440C stainless steel for good corrosion resistance.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
For technical drawings and 3-D models, click on a part number.

Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
629 | 9mm | 26mm | 8mm | 440C Stainless Steel | 820 | 490 | 34,000 | Lubricated | -40° to 240° | ABEC-3 | 00000000 | 000000 |
6000 | 10mm | 26mm | 8mm | 440C Stainless Steel | 870 | 350 | 33,000 | Lubricated | -40° to 240° | ABEC-1 | 00000000 | 00000 |
6001 | 12mm | 28mm | 8mm | 440C Stainless Steel | 970 | 420 | 30,000 | Lubricated | -40° to 240° | ABEC-1 | 00000000 | 00000 |

Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
629-2Z | 9mm | 26mm | 8mm | 440C Stainless Steel | 820 | 490 | 28,000 | Lubricated | -40° to 240° | ABEC-3 | 0000000 | 000000 |
6000-2Z | 10mm | 26mm | 8mm | 440C Stainless Steel | 870 | 350 | 28,000 | Lubricated | -40° to 240° | ABEC-1 | 00000000 | 00000 |
6001-2Z | 12mm | 28mm | 8mm | 440C Stainless Steel | 970 | 420 | 25,000 | Lubricated | -40° to 240° | ABEC-1 | 00000000 | 00000 |

Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
629-2RS | 9mm | 26mm | 8mm | 440C Stainless Steel | 820 | 490 | 28,000 | Lubricated | -40° to 240° | ABEC-3 | 0000000 | 000000 |
Permanently Lubricated Stainless Steel Ball Bearings

A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
628 | 8 | 24 | 8 | 440C Stainless Steel | 430 | 210 | 18,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 000000 |
6000 | 10 | 26 | 8 | 440C Stainless Steel | 790 | 430 | 16,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 00000 |
6001 | 12 | 28 | 8 | 440C Stainless Steel | 880 | 500 | 15,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 00000 |
Sealed | ||||||||||||
628-2RS | 8 | 24 | 8 | 440C Stainless Steel | 430 | 210 | 18,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 00000 |
629H-2RS | 9 | 26 | 8 | 440C Stainless Steel | 790 | 490 | 17,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 00000 |
6000-2RS | 10 | 26 | 8 | 440C Stainless Steel | 790 | 430 | 16,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 00000 |
6001-2RS | 12 | 28 | 8 | 440C Stainless Steel | 880 | 500 | 15,000 | Lubricated | -10° to 200° | ABEC-1 | 0000000 | 00000 |
Food Industry Permanently Lubricated Stainless Steel Ball Bearings

Good for applications with incidental food contact, these 440C stainless steel bearings have a food-grade, solid polymer lubricant between the balls and ring that eliminates the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
Sealed | |||||||||||||
6000-2RS | 10 | 26 | 8 | 440C Stainless Steel | 870 | 350 | 16,000 | Lubricated | -40° to 200° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 00000000 | 000000 |
6001-2RS | 12 | 28 | 8 | 440C Stainless Steel | 970 | 420 | 15,000 | Lubricated | -40° to 200° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 00000000 | 00000 |
628-2RS | 8 | 24 | 8 | 440C Stainless Steel | 740 | 310 | 27,000 | Lubricated | -40° to 200° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 00000000 | 00000 |
Ultra-Corrosion-Resistant Stainless Steel Ball Bearings

These 316 stainless steel bearings are more corrosion resistant than our other stainless steel bearings, but they have a lower load capacity.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
628 | 8mm | 24mm | 8mm | 316 Stainless Steel | 120 | 95 | 1,600 | Required | -40° to 140° | Not Rated | 00000000 | 000000 |
6000 | 10mm | 26mm | 8mm | 316 Stainless Steel | 120 | 95 | 1,600 | Required | -40° to 140° | Not Rated | 0000000 | 00000 |
6001 | 12mm | 28mm | 8mm | 316 Stainless Steel | 160 | 120 | 1,100 | Required | -40° to 140° | Not Rated | 0000000 | 00000 |
Plastic Ball Bearings

These acetal bearings have good all-around corrosion and chemical resistance.
316 stainless steel balls have excellent corrosion resistance.
Glass balls have even more corrosion resistance than stainless steel balls.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
316 Stainless Steel Ball | ||||||||||||
Open | ||||||||||||
628 | 8mm | 24mm | 8mm | Acetal Plastic | 42 | 33 | 1,600 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
6000 | 10mm | 26mm | 8mm | Acetal Plastic | 42 | 33 | 1,600 | Not Required | -40° to 180° | Not Rated | 00000000 | 0000 |
6001 | 12mm | 28mm | 8mm | Acetal Plastic | 55 | 43 | 1,142 | Not Required | -40° to 180° | Not Rated | 00000000 | 0000 |
16003 | 17mm | 35mm | 8mm | Acetal Plastic | 69 | 46 | 1,069 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
16100 | 10mm | 28mm | 8mm | Acetal Plastic | 55 | 42 | 1,142 | Not Required | -40° to 180° | Not Rated | 00000000 | 0000 |
16101 | 12mm | 30mm | 8mm | Acetal Plastic | 55 | 43 | 1,142 | Not Required | -40° to 180° | Not Rated | 00000000 | 0000 |
Glass Ball | ||||||||||||
Open | ||||||||||||
628 | 8mm | 24mm | 8mm | Acetal Plastic | 42 | 33 | 1,600 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
6000 | 10mm | 26mm | 8mm | Acetal Plastic | 42 | 33 | 1,600 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
6001 | 12mm | 28mm | 8mm | Acetal Plastic | 55 | 43 | 1,142 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
16004 | 20mm | 42mm | 8mm | Acetal Plastic | 78 | 52 | 840 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
Angular-Contact Thrust Ball Bearings

Install these bearings for use with combined radial and thrust loads. They are often used in spindle applications and can be combined with cylindrical roller bearings to better handle radial loads.
Single-row bearings handle thrust loads on one side. For applications with thrust loads on both sides, mount them in pairs.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Contact Angle | Temp. Range, °F | ABEC Rating | Each | |
Single Row | |||||||||||||
Open | |||||||||||||
7001 | 12 | 28 | 8 | Steel | 1,000 | 420 | 67,000 | Required | 15° | -30° to 140° | ABEC-7 | 0000000 | 0000000 |
Face-Mount Crossed-Roller Bearings

Mounting holes on the inner and outer rings allow for fastening onto hollow joints and shafts. The rollers face in alternating directions to allow for rigid, accurate motion under any combination of radial, thrust, and moment (twisting) loads. Use in applications where highly accurate motion is necessary, such as machine tools and industrial robots.
Open bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants better than open bearings, but retain more heat.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Features | Each | |
Open | |||||||||||
10 | 52 | 8 | Steel | 650 | 540 | 2,400 | Required | 0° to 230° | Lubrication Groove, Two Lubrication Holes | 0000000 | 0000000 |
Sealed | |||||||||||
10 | 52 | 8 | Steel | 650 | 540 | 1,900 | Lubricated | 0° to 210° | Lubrication Groove, Two Lubrication Holes | 0000000 | 000000 |
Crossed-Roller Bearings

With a considerably larger ID than our Face-Mount Crossed-Roller Bearings, use these to run hydraulic lines, electrical wiring, and other components through the inside of the bearing. The rollers face in alternating directions to allow for rigid, accurate motion under any combination of radial, thrust, and moment (twisting) loads. Use in applications where highly accurate motion is necessary, such as machine tools and industrial robots.
Sealed bearings block out dust and other contaminants better than open bearings, but retain more heat.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Features | Each | |
Sealed | |||||||||||
60 | 76 | 8 | Steel | 1,250 | 1,950 | 500 | Lubricated | 0° to 175° | Lubrication Groove, Lubrication Hole | 0000000 | 0000000 |
90 | 106 | 8 | Steel | 1,500 | 2,750 | 375 | Lubricated | 0° to 175° | Lubrication Groove, Lubrication Hole | 0000000 | 000000 |
100 | 116 | 8 | Steel | 1,600 | 3,100 | 350 | Lubricated | 0° to 175° | Lubrication Groove, Lubrication Hole | 0000000 | 000000 |
110 | 126 | 8 | Steel | 1,650 | 3,350 | 300 | Lubricated | 0° to 175° | Lubrication Groove, Lubrication Hole | 0000000 | 000000 |
120 | 136 | 8 | Steel | 1,750 | 3,700 | 275 | Lubricated | 0° to 175° | Lubrication Groove, Lubrication Hole | 0000000 | 000000 |
Needle-Roller Bearings

Also known as drawn-cup roller bearings, these are our thinnest roller bearings. The outer ring is drawn out to form a lip that holds the bearing together. Bearings take on the shape of their housing and may be oblong prior to installation.
Open bearings dissipate heat more efficiently than sealed bearings.
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 | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range, °F | Specifications Met | Each | |
Open | ||||||||||||
4mm | 8mm | 8mm | Steel | 400 | 290 | 42,500 | Required | 8 | -40° to 280° | DIN 618, ISO 3245 | 00000000 | 00000 |
6mm | 10mm | 8mm | Steel | 450 | 370 | 36,500 | Required | 8 | -40° to 280° | DIN 618, ISO 3245 | 00000000 | 0000 |
8mm | 12mm | 8mm | Steel | 620 | 590 | 29,500 | Required | 8 | -40° to 280° | DIN 618, ISO 3245 | 0000000 | 0000 |
9mm | 13mm | 8mm | Steel | 750 | 800 | 26,500 | Required | 8 | -20° to 280° | DIN 618, ISO 3245 | 00000000 | 0000 |
High-Temperature Linear Ball Bearings for Support Rail Shafts

The choice for low-friction motion in high-temperature environments. Mount these bearings on a support rail shaft for applications requiring maximum rigidity. They have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included) and secure in place with two retaining rings (sold separately).
For technical drawings and 3-D models, click on a part number.
Bearings | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Load Capacity, lbs. | External Retaining Rings | ||||||||||||
For Shaft Dia., mm | Overall Lg., mm | Wd., mm | For Housing ID, mm | Retaining Ring Groove End-to-End Lg., mm | Dynamic | Static | Temperature Range, ° F | For Shaft Material | Each | Pkg. Qty. | Pkg. | ||
Steel Bearings | |||||||||||||
12 | 30 | 8 | 21.000 - 21.021 | 23 | 110 | 175 | -4° to 230° | Stainless Steel, Steel | 00000000 | 000000 | 25 | 000000000 | 00000 |
High-Load Mounted Linear Ball Bearings for Support Rail Shafts

Designed to handle heavy loads, these bearings have higher load capacities than comparable standard mounted linear ball bearings for support rails. Use them for applications that require maximum rigidity. All are self-aligning to compensate for shaft misalignment and have end seals to keep lubricant in and dirt out.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | Lg., mm | Wd., mm | Ht., mm | Center Ht., mm | Wd., mm | Dynamic Load Capacity, lbs. | Max. Temperature, °F | For Shaft Material | No. of | Dia., mm | Each | |
Acetal Bearings with Steel Balls in 6061 Aluminum Housing | ||||||||||||
20 | 54 | 60 | 42 | 25 | 8 | 890 | 185° | Steel, Stainless Steel | 4 | 8 | 00000000 | 0000000 |
Bearing Retaining Locknuts



With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.
When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.
All carbon steel locknuts are strong and resist wear, though they don’t stand up to corrosion as well as stainless steel locknuts. 303 stainless steel locknuts resist corrosion better than steel locknuts but aren’t as strong. They withstand washdowns and chemicals.
For technical drawings and 3-D models, click on a part number.
Bearing Retaining Nuts


Often paired with spring lock washers to strengthen their hold, these retaining nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket. Made of carbon steel, they’re strong and wear resistant.
Use stepped-face retaining nuts with DIN 462 spring lock washers. You can also use them in pairs or with other bearing retaining nuts as jam nuts. For the nut closer to the bearing, position the stepped face towards the bearing. All meet DIN standards for bearing lockout dimensions.
Chamfered-face retaining nuts weigh less and produce less heat than stepped-face nuts. They meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.
For technical drawings and 3-D models, click on a part number.
Nuts | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread | Optional Washers | Spanner Sockets | ||||||||||
Size | Pitch, mm | Spacing | OD, mm | Wd., mm | Specifications Met | For Lock Washer Specifications Met | Each | Each | Each | |||
Carbon Steel | ||||||||||||
Stepped Face | ||||||||||||
M18 | 1.5 | Fine | 34 | 8 | DIN 1804 | DIN 462 | 0000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
M20 | 1.5 | Extra Fine | 36 | 8 | DIN 1804 | DIN 462 | 0000000 | 0000 | 000000000 | 0000 | 000000 | 00 |
Chamfered Face | ||||||||||||
M35 | 1.5 | Extra Fine | 52 | 8 | DIN 981, ISO 2982 | DIN 5406 | 0000000 | 0000 | 000000000 | 0000 | 00000000 | 0000000 |
Bearing Retaining Jam Nuts


Used in pairs or with another bearing retaining nut, these jam nuts—often called shaft nuts—hold bearings, bushings, pulleys, and gears in place on your threaded shaft or spindle. Threading two nuts tightly against each other makes it harder for vibration to loosen your assembly than if you used only one nut. For the nut closer to the bearing, position the stepped face towards the bearing. These jam nuts have holes on the side, so you can tighten and loosen them with a pin spanner wrench. Made of carbon steel, they’re strong and wear resistant. All meet DIN 1816, an international standard for bearing locknut dimensions.
For technical drawings and 3-D models, click on a part number.