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QJ228
Four Point Contact Ball Bearings
Dimensions: Bore (Inner) Diameter: 140 mm； Outer Diameter: 250 mm； Width (Thickness): 42 mm;
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Product Attributes
| Bearing Type | Ball |
| For Load Direction | Combined Radial and Thrust |
| Construction | One |
| Single Row/Double Row | Single |
| Seal Type | Open |
| Precision Rating | P0 (ABEC-1) |
| Contact Angle | 30 º |
| Part Number | QJ228 |
| Bore Dia (d) | 140 mm |
| Bore Dia Tolerance | -0.025mm to 0 |
| Outer Dia (D) | 250 mm |
| Outer Dia Tolerance | -0.03mm to 0 |
| Width (B) | 42 mm |
| Width Tolerance | -0.25mm to 0 |
| Ring Material | 52100 Chrome steel |
| Ball Material | 52100 Chrome steel |
| Cage Material | Brass |
| Dynamic Load Rating (Cr) (KN) | 315 |
| Static Load Rating (Cor) (KN) | 775 |
| Max Speed (Grease) (RPM) | 2000 |
| Max Speed (Oil) (RPM) | 2800 |
| Lubrication | Required |
| Shaft Mount Type | Press Fit |
| Temperature Range | -40 to 120 ºC |
| Mass(Kg) | 9.8 |
| RoHS | Compliant |
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