About Ball and Roller Bearings
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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 | Each | |
| 6801 | 12mm | 21mm | 5mm | Steel | 430 | 230 | 33,000 | Lubricated | -20° to 230° | 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 | |
| 6801-2Z | 12mm | 21mm | 5mm | Steel | 430 | 230 | 33,000 | Lubricated | -20° to 230° | 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 | |
| 6801-2RS | 12mm | 21mm | 5mm | Steel | 430 | 230 | 33,000 | Lubricated | -20° to 230° | ABEC-1 | 00000000 | 00000 |
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 |
| 6801 | 12 | 21 | 5 | 440C Stainless Steel | 430 | 230 | 18,000 | 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 |
| 6801-2RS | 12 | 21 | 5 | 440C Stainless Steel | 430 | 230 | 18,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 00000 |
| 63801-2RS | 12 | 21 | 7 | 440C Stainless Steel | 430 | 230 | 18,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 00000 |
Flanged Ultra-Thin Ball Bearings
Flanged and creating twice as many contact points as angular-contact ball bearings, these bearings ensure correct positioning within a tube or housing and resist radial loads.
Open bearings dissipate heat more efficiently than shielded bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
For technical drawings and 3-D models, click on a part number.
Flange | Radial Load Cap., lbs. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Diameter, mm | For Housing ID, mm | Width, mm | OD, mm | Thickness, mm | Dynamic | Static | Max. Speed, rpm | Lubrication | Temperature Range, °F | ABEC Rating | Each | |
Steel Ring | ||||||||||||
Open | ||||||||||||
| 12 | 21 | 5 | 23 | 1.1 | 430 | 230 | 36,000 | Lubricated | -50° to 280° | ABEC-1 | 00000000 | 000000 |
| 12 | 21 | 7 | 23 | 1.5 | 430 | 230 | 36,000 | Lubricated | -50° to 280° | ABEC-1 | 00000000 | 00000 |
Shielded | ||||||||||||
| 12 | 21 | 5 | 23 | 1.1 | 430 | 230 | 30,000 | Lubricated | -50° to 300° | ABEC-1 | 00000000 | 00000 |
| 12 | 21 | 7 | 23 | 1.5 | 430 | 230 | 30,000 | Lubricated | -50° to 300° | ABEC-1 | 00000000 | 00000 |
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.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open 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. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||||||||||||||
| 12mm | 21mm | 5mm | 430 | 230 | Not Rated | Not Rated | Not Rated | Not Rated | 39,000 | Lubricated | -50° to 130° | ABEC-1 | 0000000 | 00000 |
Shielded | ||||||||||||||
| 12mm | 21mm | 5mm | 430 | 230 | Not Rated | Not Rated | Not Rated | Not Rated | 33,000 | Lubricated | -40° to 150° | ABEC-1 | 00000000 | 0000 |