Angular contact ball bearings, super-precision 71938 CD/P4A
Bearing number : 71938 CD/P4A
Size (mm) : 190x260x33
Brand : SKF
Bore Diameter (mm) : 190
Outer Diameter (mm) : 260
Width (mm) : 33
Bearing dimensions and specification in SKF catalogue:
d - 190 mm
D - 260 mm
B - 33 mm
d1 - 211.6 mm
d2 - 211.6 mm
D1 - 238.4 mm
r1,2 - min. - 2 mm
r3,4 - min. - 1 mm
a - 46.8 mm
da - min. - 199 mm
db - min. - 199 mm
Da - max. - 251 mm
Db - max. - 255 mm
ra - max. - 2 mm
rb - max. - 1 mm
dn - 217.4 mm
Basic dynamic load rating - C - 172 kN
Basic static load rating - C0 - 220 kN
Fatigue load limit - Pu - 6.2 kN
Limiting speed for grease lubrication - 5000 r/min
Limiting speed for oil lubrication - 7500 mm/min
Ball - Dw - 22.225 mm
Ball - z - 28
Gref - 57 cm3
Calculation factor - f0 - 16.4
Preload class A - GA - 640 N
Preload class B - GB - 1280 N
Preload class C - GC - 2560 N
Preload class D - GD - 5120 N
Calculation factor - f - 1.27
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.09
Calculation factor - f2D - 1.15
Calculation factor - fHC - 1
Preload class A - 189 N/micron
Preload class B - 260 N/micron
Preload class C - 367 N/micron
Preload class D - 538 N/micron
Mass bearing - 4.35 kg
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