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FAG
QJ228-N2-MPA
Four-point contact bearing QJ228-N2-MPA
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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.

Your current product variant
Design, bearing outer ringN2two retaining grooves in the outer ring on one side
CageMPAsolid brass cage, outer ring guided
Tolerance classPNNormal (PN)
Dimensional / heat stabilization S1Rings dimensional stabilized up to 200°
Axial internal clearanceCNGroup N (CN)
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