Angular contact ball bearings, super-precision 7220 CD/P4A
Bearing number : 7220 CD/P4A
Size (mm) : 100x180x34
Brand : SKF
Bore Diameter (mm) : 100
Outer Diameter (mm) : 180
Width (mm) : 34
Bearing dimensions and specification in SKF catalogue:
d - 100 mm
D - 180 mm
B - 34 mm
d1 - 124.7 mm
d2 - 124.7 mm
D1 - 155.3 mm
r1,2 - min. - 2.1 mm
r3,4 - min. - 1.1 mm
a - 35.9 mm
da - min. - 112 mm
db - min. - 112 mm
Da - max. - 168 mm
Db - max. - 173 mm
ra - max. - 2 mm
rb - max. - 1 mm
dn - 131.4 mm
Basic dynamic load rating - C - 156 kN
Basic static load rating - C0 - 137 kN
Fatigue load limit - Pu - 4.9 kN
Limiting speed for grease lubrication - 7500 r/min
Limiting speed for oil lubrication - 12000 mm/min
Ball - Dw - 25.4 mm
Ball - z - 15
Gref - 40.899 cm3
Calculation factor - f0 - 14.5
Preload class A - GA - 590 N
Preload class B - GB - 1180 N
Preload class C - GC - 2360 N
Preload class D - GD - 4720 N
Calculation factor - f - 1.09
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.01
Calculation factor - f2C - 1.03
Calculation factor - f2D - 1.05
Calculation factor - fHC - 1
Preload class A - 122 N/micron
Preload class B - 165 N/micron
Preload class C - 230 N/micron
Preload class D - 331 N/micron
Mass bearing - 3.242 kg