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QJ311-XL-MPA-Four-Point Contact Bearing
QJ311-XL-MPA-Four-Point Contact Bearing with solid brass cage, outer ring guided， X-life，Bore diameter is 55.00 mm，Outside diameter is 120.00 mm，Width is 29.00 mm，Weight is 1.69kg.
a special form of single-row angular contact ball bearing. The separate inner ring or outer ring has two contact angles and four contact points, which can withstand radial and axial forces in both directions.
| Dimensional Specifications/Calculation data | |
| d-Bore diameter | 55.00 mm |
| D-Outside diameter | 120.00 mm |
| B-Width | 29.00 mm |
| Cr-Basic dynamic load rating, radial | 133,000.00 N |
| C0r-Basic static load rating, radial | 108,000.00 N |
| Cur-Basic dynamic load rating, radial | 8,100.00 N |
| nG-Limiting speed | 11,400.00 1/min |
| nϑr-Reference speed | 5,000.00 1/min |
| m-Weight | 1.69 kg |
| da min-Minimum diameter shaft shoulder | 66.00 mm |
| Da max-Maximum diameter of housing shoulder | 109.00 mm |
| ra max-Maximum fillet radius | 2.00 mm |
| rmin-Minimum chamfer dimension | 2.00 mm |
| D1-Shoulder diameter outer ring | 97.80 mm |
| d1-Shoulder diameter inner ring | 77.20 mm |
| a-Distance between the apexes of the pressure cones | 61.00 mm |
| α-Contact angle | 35.00 ° |
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