Angular contact ball bearings, super-precision 7021 CD/P4A
Bearing number : 7021 CD/P4A
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 - 30.8 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 - 95.6 kN
Basic static load rating - C0 - 96.5 kN
Fatigue load limit - Pu - 3.6 kN
Limiting speed for grease lubrication - 8000 r/min
Limiting speed for oil lubrication - 13000 mm/min
Ball - Dw - 17.462 mm
Ball - z - 21
Gref - 20.4 cm3
Calculation factor - f0 - 15.7
Preload class A - GA - 360 N
Preload class B - GB - 720 N
Preload class C - GC - 1440 N
Preload class D - GD - 2880 N
Calculation factor - f - 1.15
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.02
Calculation factor - f2C - 1.05
Calculation factor - f2D - 1.09
Calculation factor - fHC - 1
Preload class A - 117 N/micron
Preload class B - 159 N/micron
Preload class C - 223 N/micron
Preload class D - 324 N/micron
Mass bearing - 1.592 kg
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