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11:54:10 GMT+0000 (Coordinated Universal Time)
QJ228-N2-MPA
Four-point contact bearing
Four point contact bearing QJ2..-N2-MPA, holding grooves, solid brass cage
Replaces
QJ228N2MPA
Product information
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 | 180.02 mm | Shoulder diameter inner ring |
a | 136.5 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. |