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FAG
QJ1248-MPA
Four-point contact bearing QJ1248-MPA
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Main Dimensions & Performance Data
d
240 mm
Bore diameter
D
440 mm
Outside diameter
B
85 mm
Width
Cr
660,000 N
Basic dynamic load rating, radial
C0r
1,220,000 N
Basic static load rating, radial
Cur
38,000 N
Fatigue load limit, radial
nG
2,600 1/min
Limiting speed
nϑr
1,390 1/min
Reference speed
≈m
61.6 kg
Weight

Mounting dimensions
da min
257 mm
Minimum diameter shaft shoulder
Da max
423 mm
Maximum diameter of housing shoulder
ra max
3 mm
Maximum fillet radius

Dimensions
rmin
4 mm
Minimum chamfer dimension
D1
367.9 mm
Shoulder diameter outer ring
d1
314.95 mm
Shoulder diameter inner ring
a
340 mm
Distance between the apexes of the pressure cones
α
45 °
Contact angle

Temperature range
Tmin
-30 °C
Operating temperature min.
Tmax
200 °C
Operating temperature max.

Your current product variant
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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