Angular contact ball bearings, super-precision 7208 CD/HCP4A
Bearing number : 7208 CD/HCP4A
Size (mm) : 40x80x18
Brand : SKF
Bore Diameter (mm) : 40
Outer Diameter (mm) : 80
Width (mm) : 18
Bearing dimensions and specification in SKF catalogue:
d - 40 mm
D - 80 mm
B - 18 mm
d1 - 53.3 mm
d2 - 53.3 mm
D1 - 66.7 mm
r1,2 - min. - 1.1 mm
r3,4 - min. - 0.6 mm
a - 17.1 mm
da - min. - 47 mm
db - min. - 47 mm
Da - max. - 73 mm
Db - max. - 75.8 mm
ra - max. - 1 mm
rb - max. - 0.6 mm
dn - 56.2 mm
Basic dynamic load rating - C - 33.8 kN
Basic static load rating - C0 - 24 kN
Fatigue load limit - Pu - 1 kN
Limiting speed for grease lubrication - 22000 r/min
Limiting speed for oil lubrication - 34000 mm/min
Ball - Dw - 11.112 mm
Ball - z - 14
Gref - 4.725 cm3
Calculation factor - f0 - 14.4
Preload class A - GA - 125 N
Preload class B - GB - 250 N
Preload class C - GC - 500 N
Preload class D - GD - 1000 N
Calculation factor - f - 1.05
Calculation factor - f1 - 1
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 - 59 N/micron
Preload class B - 79 N/micron
Preload class C - 111 N/micron
Preload class D - 159 N/micron
Mass bearing - 0.326 kg
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SKF 7208 CD/HCP4A bearin
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