Angular contact ball bearings, super-precision 71801 CD/P4
Bearing number : 71801 CD/P4
Size (mm) : 12x21x5
Brand : SKF
Bore Diameter (mm) : 12
Outer Diameter (mm) : 21
Width (mm) : 5
Bearing dimensions and specification in SKF catalogue:
d - 12 mm
D - 21 mm
B - 5 mm
d1 - 15.1 mm
d2 - 15.1 mm
D1 - 18.1 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.15 mm
a - 4.7 mm
da - min. - 14 mm
db - min. - 14 mm
Da - max. - 19 mm
Db - max. - 20.2 mm
ra - max. - 0.3 mm
rb - max. - 0.15 mm
dn - 15.4 mm
Basic dynamic load rating - C - 2.1 kN
Basic static load rating - C0 - 1.2 kN
Fatigue load limit - Pu - 0.05 kN
Limiting speed for grease lubrication - 70000 r/min
Limiting speed for oil lubrication - 110000 mm/min
Ball - Dw - 2.381 mm
Ball - z - 14
Gref - 0.07 cm3
Calculation factor - f0 - 15.4
Preload class A - GA - 11 N
Preload class B - GB - 33 N
Preload class C - GC - 66 N
Calculation factor - f - 1.06
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.09
Calculation factor - f2C - 1.16
Calculation factor - fHC - 1
Preload class A - 15 N/micron
Preload class B - 25 N/micron
Preload class C - 37 N/micron
Mass bearing - 0.006 kg
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