Angular contact ball bearings, super-precision 7044 CD/HCP4A
Bearing number : 7044 CD/HCP4A
Size (mm) : 220x340x56
Brand : SKF
Bore Diameter (mm) : 220
Outer Diameter (mm) : 340
Width (mm) : 56
Bearing dimensions and specification in SKF catalogue:
d - 220 mm
D - 340 mm
B - 56 mm
d1 - 257 mm
d2 - 257 mm
D1 - 303 mm
r1,2 - min. - 3 mm
r3,4 - min. - 1.5 mm
a - 65.7 mm
da - min. - 233 mm
db - min. - 233 mm
Da - max. - 327 mm
Db - max. - 334 mm
ra - max. - 2.5 mm
rb - max. - 1.5 mm
dn - 267.1 mm
Basic dynamic load rating - C - 338 kN
Basic static load rating - C0 - 455 kN
Fatigue load limit - Pu - 11.6 kN
Limiting speed for grease lubrication - 4800 r/min
Limiting speed for oil lubrication - 7500 mm/min
Ball - Dw - 38.1 mm
Ball - z - 21
Gref - 201 cm3
Calculation factor - f0 - 15.6
Preload class A - GA - 1250 N
Preload class B - GB - 2500 N
Preload class C - GC - 5000 N
Preload class D - GD - 10000 N
Calculation factor - f - 1.13
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.02
Calculation factor - f2C - 1.05
Calculation factor - f2D - 1.09
Calculation factor - fHC - 1.02
Preload class A - 247 N/micron
Preload class B - 333 N/micron
Preload class C - 460 N/micron
Preload class D - 657 N/micron
Mass bearing - 13.21 kg
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