QJ228-N2-MPA
Four-point contact bearing
Four point contact bearing QJ2..-N2-MPA, holding grooves, solid brass cage
Replaces
QJ228N2MPA
Description
Metric
Imperial
Main Dimensions & Performance Data
| d | 140 mm | Bore diameter |
| D | 250 mm | Outside diameter |
| B | 42 mm | Width |
| Cr | 315,000 N | Basic dynamic load rating, radial |
| C0r | 420,000 N | Basic static load rating, radial |
| Cur | 16,900 N | Fatigue load limit, radial |
| nG | 4,700 1/min | Limiting speed |
| nϑr | 2,600 1/min | Reference speed |
| ≈m | 9.371 kg | Weight |
Mounting dimensions
| da min | 154 mm | Minimum diameter shaft shoulder |
| Da max | 236 mm | Maximum diameter of housing shoulder |
| ra max | 2.5 mm | Maximum fillet radius |
Dimensions
| rmin | 3 mm | Minimum chamfer dimension |
| D1 | 210.5 mm | Shoulder diameter outer ring |
| d1 | 180 mm | Shoulder diameter inner ring |
| a | 137 mm | Distance between the apexes of the pressure cones |
| an | 11.7 mm | Hight retaining slot |
| bn | 10.5 mm | Width retaining slot |
| rn | 2 mm | Radius retaining slot |
| 45 ° | Angle retaining slot | |
| α | 35 ° | Contact angle |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 200 °C | Operating temperature max. |
Your current product variant
| Cage | MPA | solid brass cage, outer ring guided |
| Design, bearing outer ring | N2 | two retaining grooves in the outer ring on one side |
| Coating | Without | |
| Tolerance class | PN | Normal (PN) |
| Dimensional / heat stabilization | S1 | Rings dimensional stabilized up to 200° |
| Axial internal clearance | CN | Group N (CN) |
Characteristics
