Angular contact ball bearings, super-precision 71821 ACD/HCP4
Bearing number : 71821 ACD/HCP4
Size (mm) : 105x130x13
Brand : SKF
Bore Diameter (mm) : 105
Outer Diameter (mm) : 130
Width (mm) : 13
Bearing dimensions and specification in SKF catalogue:
d - 105 mm
D - 130 mm
B - 13 mm
d1 - 113.2 mm
d2 - 113.2 mm
D1 - 122 mm
r1,2 - min. - 1 mm
r3,4 - min. - 0.3 mm
a - 34 mm
da - min. - 109.6 mm
db - min. - 109.6 mm
Da - max. - 125.4 mm
Db - max. - 128 mm
ra - max. - 1 mm
rb - max. - 0.3 mm
dn - 114.6 mm
Basic dynamic load rating - C - 21.6 kN
Basic static load rating - C0 - 28.5 kN
Fatigue load limit - Pu - 1.1 kN
Limiting speed for grease lubrication - 9500 r/min
Limiting speed for oil lubrication - 15000 mm/min
Ball - Dw - 7.144 mm
Ball - z - 35
Gref - 4 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 - 200 N
Preload class B - GB - 600 N
Preload class C - GC - 1200 N
Calculation factor - f - 1.44
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 - 244 N/micron
Preload class B - 392 N/micron
Preload class C - 541 N/micron
Mass bearing - 0.289 kg
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