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About Ball and Roller Bearings
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Precision Ball Bearings
Shielded
Sealed
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.
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 | ||||||||||||
| 6018-2Z | 90 | 140 | 24 | Steel | 13,600 | 11,200 | 5,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 0000000 |
| 6216-2Z | 80 | 140 | 26 | Steel | 16,350 | 12,350 | 4,800 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
| 6313-2Z | 65 | 140 | 33 | Steel | 21,900 | 13,450 | 5,300 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
Sealed | ||||||||||||
| 6018-2RS | 90 | 140 | 24 | Steel | 13,600 | 11,200 | 3,000 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
| 6216-2RS | 80 | 140 | 26 | Steel | 16,350 | 12,350 | 3,000 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
| 6313-2RS | 65 | 140 | 33 | Steel | 21,900 | 13,450 | 3,200 | Lubricated | -30° to 210° | ABEC-3 | 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.