Angular contact ball bearings, super-precision S7211 ACD/HCP4A
Bearing number : S7211 ACD/HCP4A
Size (mm) : 55x100x21
Brand : SKF
Bore Diameter (mm) : 55
Outer Diameter (mm) : 100
Width (mm) : 21
Bearing dimensions and specification in SKF catalogue:
d - 55 mm
D - 100 mm
B - 21 mm
d1 - 68.9 mm
d2 - 68.9 mm
D2 - 89.1 mm
r1,2 - min. - 1.5 mm
r3,4 - min. - 0.6 mm
a - 28.7 mm
da - min. - 64 mm
da - max. - 68.1 mm
db - min. - 64 mm
db - max. - 68.1 mm
Da - max. - 91 mm
Db - max. - 95.8 mm
ra - max. - 1.5 mm
rb - max. - 0.6 mm
Basic dynamic load rating - C - 52.7 kN
Basic static load rating - C0 - 40.5 kN
Fatigue load limit - Pu - 1.7 kN
Limiting speed for grease lubrication - 15000 r/min
Ball - Dw - 14.288 mm
Ball - z - 15
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 - 330 N
Preload class B - GB - 660 N
Preload class C - GC - 1320 N
Preload class D - GD - 2640 N
Calculation factor - f - 1.08
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.01
Calculation factor - f2C - 1.03
Calculation factor - f2D - 1.06
Calculation factor - fHC - 1.01
Preload class A - 191 N/micron
Preload class B - 248 N/micron
Preload class C - 329 N/micron
Preload class D - 443 N/micron
Mass bearing - 0.515 kg
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