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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.
Open
Open
Shielded
Shielded
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 | |
| 6805-2Z | 25mm | 37mm | 7mm | Steel | 960 | 660 | 18,000 | Lubricated | -20° to 230° | ABEC-1 | 00000000 | 000000 |
| 6905-2Z | 25mm | 42mm | 9mm | Steel | 1,550 | 1,000 | 16,000 | Lubricated | -20° to 230° | ABEC-1 | 00000000 | 00000 |
Sealed
Sealed
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 | |
| 6905-2RS | 25mm | 42mm | 9mm | Steel | 1,550 | 1,000 | 16,000 | Lubricated | -20° to 230° | ABEC-1 | 00000000 | 000000 |