Angular contact ball bearings, super-precision 7009 ACE/P4A
Bearing number : 7009 ACE/P4A
Size (mm) : 45x75x16
Brand : SKF
Bore Diameter (mm) : 45
Outer Diameter (mm) : 75
Width (mm) : 16
Bearing dimensions and specification in SKF catalogue:
d - 45 mm
D - 75 mm
B - 16 mm
d1 - 55.7 mm
d2 - 53.6 mm
D1 - 64.25 mm
r1,2 - min. - 1 mm
r3,4 - min. - 0.6 mm
a - 22.2 mm
da - min. - 49.6 mm
db - min. - 49.6 mm
Da - max. - 70.4 mm
Db - max. - 70.8 mm
ra - max. - 1 mm
rb - max. - 0.6 mm
dn - 57.6 mm
Basic dynamic load rating - C - 12.1 kN
Basic static load rating - C0 - 8.2 kN
Fatigue load limit - Pu - 0.345 kN
Limiting speed for grease lubrication - 24000 r/min
Limiting speed for oil lubrication - 37000 mm/min
Ball - Dw - 7.144 mm
Ball - z - 21
Gref - 3.4 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 - 110 N
Preload class B - GB - 330 N
Preload class C - GC - 660 N
Calculation factor - f - 1.06
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.03
Calculation factor - f2C - 1.06
Calculation factor - fHC - 1
Preload class A - 94 N/micron
Preload class B - 140 N/micron
Preload class C - 183 N/micron
Mass bearing - 0.242 kg
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