System of Measurement System of Measurement |
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OD OD |
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For Load Direction For Load Direction |
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![]() | Radial |
![]() | Combined Radial and Thrust |
![]() | Combined Radial, Thrust, and Moment |
For Housing ID For Housing ID | Show |
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For Housing ID For Housing ID | Hide |
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Dynamic Radial Load Capacity Dynamic Radial Load Capacity |
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Ball Bearing Type Ball Bearing Type |
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![]() | Standard |
For Shaft Type For Shaft Type |
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![]() | Round |
Maximum Speed Maximum Speed |
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Construction Construction |
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Lubrication Lubrication |
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Dynamic Combined Load Capacity Dynamic CombinedLoad Capacity |
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Minimum Temperature Minimum Temperature |
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Maximum Temperature Maximum Temperature |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Ring Material Ring Material |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Ball and Roller Bearings
More
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. | |||||||||||||
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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 | |
6311 | 55mm | 120mm | 29mm | Steel | 17,100 | 10,600 | 8,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |

Radial Load Cap., lbs. | ||||||||||||
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Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
6311-2Z | 55mm | 120mm | 29mm | Steel | 16,000 | 10,100 | 5,600 | Lubricated | -20° to 230° | ABEC-1 | 00000000 | 000000 |

Radial Load Cap., lbs. | |||||||||||||
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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 | |
6311-2RS | 55mm | 120mm | 29mm | Steel | 17,100 | 10,600 | 3,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 000000 |
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. | ||||||||||||
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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 | ||||||||||||
6311 | 55mm | 120mm | 29mm | Steel | 13,100 | 10,100 | 3,300 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 0000000 |
Sealed | ||||||||||||
6311-2RS | 55mm | 120mm | 29mm | Steel | 13,100 | 10,100 | 3,300 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
Self-Aligning Ball Bearings

With a spherical raceway and two rows of balls, these bearings compensate for shaft misalignment.
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. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Misalignment Capability | Temp. Range, °F | ABEC Rating | Each | |
Open | |||||||||||||
2213 | 65 | 120 | 31 | Steel | 9,750 | 3,650 | 4,800 | Required | 4° | Not Rated | ABEC-1 | 00000000 | 0000000 |
2311 | 55 | 120 | 43 | Steel | 17,150 | 5,350 | 4,800 | Required | 4° | Not Rated | ABEC-1 | 00000000 | 000000 |
Ultra-Thin Ball Bearings

These bearings have twice as many contact points as angular-contact ball bearings. Fit onto large-diameter hollow shafts to run air and hydraulic lines, electrical wiring, and other components through moving parts in assemblies such as index and rotary tables, packaging equipment, and robotics.
Open bearings dissipate heat more efficiently than shielded bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | Moment Load Cap., ft.-lbs. | ||||||||||||
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For Shaft Dia. | For Housing ID | Wd. | Dynamic | Static | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Steel Ring | ||||||||||||||
Open | ||||||||||||||
85mm | 120mm | 18mm | 7,150 | 6,650 | Not Rated | Not Rated | Not Rated | Not Rated | 6,300 | Lubricated | -50° to 130° | ABEC-1 | 00000000 | 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. | |||||||||||
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For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Features | Each | |
Open | |||||||||||
55 | 120 | 15 | Steel | 4,500 | 6,200 | 850 | Required | 0° to 230° | Lubrication Groove, Two Lubrication Holes | 0000000 | 0000000 |
Sealed | |||||||||||
55 | 120 | 15 | Steel | 4,500 | 6,200 | 650 | 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.
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 | |||||||||||
80 | 120 | 16 | Steel | 7,200 | 9,700 | 750 | Required | 0° to 230° | Lubrication Groove, Two Lubrication Holes | 0000000 | 0000000 |
Sealed | |||||||||||
80 | 120 | 16 | Steel | 7,200 | 9,700 | 600 | Lubricated | 0° to 210° | Lubrication Groove, Two Lubrication Holes | 0000000 | 000000 |
Spherical-Roller Bearings

Two rows of rollers give these bearings dynamic radial load capacities over five times higher than comparably sized tapered-roller bearings. Also known as rock crusher bearings, they handle heavy shock loads and are used for metal milling machinery, mining and oil field equipment, and in paper mills.
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 | Bearing Trade Number | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Max. Temp. Range, °F | Each | |
Open | |||||||||||
65 | 120 | 31 | 22213 | Steel | 49,500 | 51,500 | 4,300 | Required | 390 | 000000 | 0000000 |