QJF 228 N2MA
Precision ball bearing > QJF/Q four point contact ball bearing
QJF 228 N2MA - QJF/Q four point contact ball bearing - Precision ball bearing
| Product model | QJF 228 N2MA |
|---|---|
| d | 140 mm |
| D | 250 mm |
| B | 42 mm |
| Limiting speed | 4300 r/min |
| d1 | ≈179mm |
| D1 | ≈211mm |
| Distance from load point (a) | 137mm |
| Fillet radius of locating groove (r0) | 2mm |
| Chamfer size of inner ring (r1,2) | min.3mm |
| da | min.154mm |
| Da | max.236mm |
| ra | max.2.5mm |
| Pu | 14.3kN |
| Calculation coefficient (A) | 0.556 |
| Calculation coefficient (e) | 0.95 |
| Calculation coefficient (X) | 0.6 |
| Y0 | 0.58 |
| Y1 | 0.66 |
| Y2 | 1.07 |
| Mass bearing | 9.85kg |
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QJF 228 N2MA / QJF/Q four point contact ball bearing / Precision ball bearing