Angular contact ball bearings, super-precision 71804 ACD/HCP4
Bearing number : 71804 ACD/HCP4
Size (mm) : 20x32x7
Brand : SKF
Bore Diameter (mm) : 20
Outer Diameter (mm) : 32
Width (mm) : 7
Bearing dimensions and specification in SKF catalogue:
d - 20 mm
D - 32 mm
B - 7 mm
d1 - 24.1 mm
d2 - 24.1 mm
D1 - 28.1 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.15 mm
a - 9.6 mm
da - min. - 22 mm
db - min. - 22 mm
Da - max. - 30 mm
Db - max. - 31.2 mm
ra - max. - 0.3 mm
rb - max. - 0.15 mm
dn - 24.5 mm
Basic dynamic load rating - C - 3.6 kN
Basic static load rating - C0 - 2.5 kN
Fatigue load limit - Pu - 0.106 kN
Limiting speed for grease lubrication - 48000 r/min
Limiting speed for oil lubrication - 75000 mm/min
Ball - Dw - 3.175 mm
Ball - z - 17
Gref - 0.18 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 - 32 N
Preload class B - GB - 100 N
Preload class C - GC - 200 N
Calculation factor - f - 1.08
Calculation factor - f1 - 0.97
Calculation factor - f2A - 1
Calculation factor - f2B - 1.09
Calculation factor - f2C - 1.17
Calculation factor - fHC - 1.02
Preload class A - 58 N/micron
Preload class B - 92 N/micron
Preload class C - 125 N/micron
Mass bearing - 0.017 kg
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