Angular contact ball bearings, super-precision 7021 ACD/HCP4A
Bearing number : 7021 ACD/HCP4A
Size (mm) : 105x160x26
Brand : SKF
Bore Diameter (mm) : 105
Outer Diameter (mm) : 160
Width (mm) : 26
Bearing dimensions and specification in SKF catalogue:
d - 105 mm
D - 160 mm
B - 26 mm
d1 - 121.9 mm
d2 - 121.9 mm
D1 - 143.1 mm
r1,2 - min. - 2 mm
r3,4 - min. - 1 mm
a - 44 mm
da - min. - 114 mm
db - min. - 114 mm
Da - max. - 151 mm
Db - max. - 155 mm
ra - max. - 2 mm
rb - max. - 1 mm
dn - 125.6 mm
Basic dynamic load rating - C - 90.4 kN
Basic static load rating - C0 - 93 kN
Fatigue load limit - Pu - 3.4 kN
Limiting speed for grease lubrication - 9000 r/min
Limiting speed for oil lubrication - 14000 mm/min
Ball - Dw - 17.462 mm
Ball - z - 21
Gref - 20.4 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 - 560 N
Preload class B - GB - 1120 N
Preload class C - GC - 2240 N
Preload class D - GD - 4480 N
Calculation factor - f - 1.15
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.02
Calculation factor - f2C - 1.05
Calculation factor - f2D - 1.08
Calculation factor - fHC - 1.02
Preload class A - 309 N/micron
Preload class B - 405 N/micron
Preload class C - 537 N/micron
Preload class D - 727 N/micron
Mass bearing - 1.317 kg
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