Angular contact ball bearings, super-precision 71922 CD/P4A
Bearing number : 71922 CD/P4A
Size (mm) : 110x150x20
Brand : SKF
Bore Diameter (mm) : 110
Outer Diameter (mm) : 150
Width (mm) : 20
Bearing dimensions and specification in SKF catalogue:
d - 110 mm
D - 150 mm
B - 20 mm
d1 - 122.3 mm
d2 - 122.3 mm
D1 - 137.7 mm
r1,2 - min. - 1.1 mm
r3,4 - min. - 0.6 mm
a - 27.5 mm
da - min. - 116 mm
db - min. - 116 mm
Da - max. - 144 mm
Db - max. - 146 mm
ra - max. - 1 mm
rb - max. - 0.6 mm
dn - 125.6 mm
Basic dynamic load rating - C - 62.4 kN
Basic static load rating - C0 - 72 kN
Fatigue load limit - Pu - 2.7 kN
Limiting speed for grease lubrication - 8000 r/min
Limiting speed for oil lubrication - 13000 mm/min
Ball - Dw - 12.7 mm
Ball - z - 28
Gref - 11.4 cm3
Calculation factor - f0 - 16.5
Preload class A - GA - 230 N
Preload class B - GB - 460 N
Preload class C - GC - 920 N
Preload class D - GD - 1840 N
Calculation factor - f - 1.26
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 - 113 N/micron
Preload class B - 156 N/micron
Preload class C - 221 N/micron
Preload class D - 325 N/micron
Mass bearing - 0.86 kg
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Internal clearance is how much the bearing's rolling elements move within the raceway before the bearing is mounted to a shaft. A greater internal clearance means there is more space, or looseness, within the bearing. Internal clearance is most commonly expressed with the letter C followed by a number, with C0 being standard clearance.
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