Angular contact ball bearings, super-precision 71938 ACD/HCP4A
Bearing number : 71938 ACD/HCP4A
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 - 69.2 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 - 163 kN
Basic static load rating - C0 - 208 kN
Fatigue load limit - Pu - 5.8 kN
Limiting speed for grease lubrication - 5300 r/min
Limiting speed for oil lubrication - 8000 mm/min
Ball - Dw - 22.225 mm
Ball - z - 28
Gref - 57 cm3
Calculation factor - e - 0.68
Calculation factor - Y2 - 0.87
Calculation factor - Y0 - 0.38
Calculation factor - X2 - 0.41
Calculation factor - Y1 - 0.92
Calculation factor - Y2 - 1.41
Calculation factor - Y0 - 0.76
Calculation factor - X2 - 0.67
Preload class A - GA - 1000 N
Preload class B - GB - 2000 N
Preload class C - GC - 4000 N
Preload class D - GD - 8000 N
Calculation factor - f - 1.27
Calculation factor - f1 - 0.98
Calculation factor - f2A - 1
Calculation factor - f2B - 1.07
Calculation factor - f2C - 1.12
Calculation factor - f2D - 1.17
Calculation factor - fHC - 1.04
Preload class A - 505 N/micron
Preload class B - 665 N/micron
Preload class C - 886 N/micron
Preload class D - 1210 N/micron
Mass bearing - 3.636 kg
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