QJ 1284 N2MA
Precision ball bearing > QJ four point contact ball bearing
QJ 1284 N2MA - QJ four point contact ball bearing - Precision ball bearing
| Product model | QJ 1284 N2MA |
|---|---|
| d | 420 mm |
| D | 760 mm |
| B | 150 mm |
| Limiting speed | 1300 r/min |
| d1 | ≈549mm |
| D1 | ≈631mm |
| Distance from load point (a) | 590mm |
| h | 20.5mm |
| b | 25mm |
| Fillet radius of locating groove (r0) | 3mm |
| Chamfer size of inner ring (r1,2) | min.7.5mm |
| da | min.456mm |
| Da | max.724mm |
| ra | max.6mm |
| Pu | 64kN |
| Calculation coefficient (A) | 80.1 |
| Calculation coefficient (e) | 1.34 |
| Calculation coefficient (X) | 0.54 |
| Y0 | 0.44 |
| Y1 | 0.47 |
| Y2 | 0.81 |
| Mass bearing | 315kg |
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QJ 1284 N2MA / QJ four point contact ball bearing / Precision ball bearing