About Ball and Roller Bearings
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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.
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 | ||||||||||||
| 6217-2Z | 85 | 150 | 28 | Steel | 19,550 | 14,350 | 4,500 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 0000000 |
| 6314-2Z | 70 | 150 | 35 | Steel | 24,900 | 15,250 | 5,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
Sealed | ||||||||||||
| 6217-2RS | 85 | 150 | 28 | Steel | 19,550 | 14,350 | 2,800 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
| 6314-2RS | 70 | 150 | 35 | Steel | 24,900 | 15,250 | 3,000 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
High-Load Crossed-Roller Bearings
The thicker inner and outer raceways on these bearings can handle heavier loads than the thin-profile crossed-roller bearings. 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.
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 | |||||||||||
| 100 | 150 | 20 | Steel | 11,400 | 16,200 | 600 | Required | 0° to 245° | __ | 0000000 | 0000000 |
Sealed | |||||||||||
| 100 | 150 | 20 | Steel | 11,400 | 16,200 | 480 | Lubricated | 0° to 245° | 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.