Angular contact ball bearings, super-precision 71960 CDMA/HCP4A
Bearing number : 71960 CDMA/HCP4A
Size (mm) : 300x420x56
Brand : SKF
Bore Diameter (mm) : 300
Outer Diameter (mm) : 420
Width (mm) : 56
Bearing dimensions and specification in SKF catalogue:
d - 300 mm
D - 420 mm
B - 56 mm
d1 - 337 mm
d2 - 337 mm
D1 - 383 mm
r1,2 - min. - 3 mm
r3,4 - min. - 1.1 mm
a - 76.4 mm
da - min. - 313 mm
db - min. - 313 mm
Da - max. - 405 mm
Db - max. - 414 mm
ra - max. - 2.5 mm
rb - max. - 1 mm
dn - 347 mm
Basic dynamic load rating - C - 371 kN
Basic static load rating - C0 - 600 kN
Fatigue load limit - Pu - 13.4 kN
Limiting speed for grease lubrication - 3800 r/min
Limiting speed for oil lubrication - 5300 mm/min
Ball - Dw - 38.1 mm
Ball - z - 26
Gref - 265 cm3
Calculation factor - f0 - 16.3
Preload class A - GA - 1400 N
Preload class B - GB - 2800 N
Preload class C - GC - 5600 N
Preload class D - GD - 11200 N
Calculation factor - f - 1.22
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.07
Calculation factor - f2C - 1.12
Calculation factor - f2D - 1.18
Calculation factor - fHC - 1.04
Preload class A - 302 N/micron
Preload class B - 409 N/micron
Preload class C - 570 N/micron
Preload class D - 822 N/micron
Mass bearing - 19.4 kg
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