Angular contact ball bearings, super-precision 71944 ACD/P4AL
Bearing number : 71944 ACD/P4AL
Size (mm) : 220x300x38
Brand : SKF
Bore Diameter (mm) : 220
Outer Diameter (mm) : 300
Width (mm) : 38
Bearing dimensions and specification in SKF catalogue:
d - 220 mm
D - 300 mm
B - 38 mm
d1 - 244.7 mm
d2 - 244.7 mm
D1 - 275.3 mm
b - 3.5 mm
C1 - 20.9 mm
C2 - 7.1 mm
C3 - 5.45 mm
r1,2 - min. - 2.1 mm
r3,4 - min. - 1 mm
a - 79.9 mm
da - min. - 231 mm
db - min. - 231 mm
Da - max. - 289 mm
Db - max. - 295 mm
ra - max. - 2 mm
rb - max. - 1 mm
dn - 251.4 mm
Basic dynamic load rating - C - 208 kN
Basic static load rating - C0 - 285 kN
Fatigue load limit - Pu - 7.5 kN
Limiting speed for grease lubrication - 3800 r/min
Limiting speed for oil lubrication - 5600 mm/min
Ball - Dw - 25.4 mm
Ball - z - 29
Gref - 84 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 - 1300 N
Preload class B - GB - 2600 N
Preload class C - GC - 5200 N
Preload class D - GD - 10400 N
Calculation factor - f - 1.28
Calculation factor - f1 - 0.98
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.08
Calculation factor - f2D - 1.14
Calculation factor - fHC - 1
Preload class A - 533 N/micron
Preload class B - 699 N/micron
Preload class C - 934 N/micron
Preload class D - 1275 N/micron
Mass bearing - 6.6 kg
SKF, Bearings, Seals, Mechatronics & Lubrication | E.B .
SKF Group is the leading global supplier of products, solutions and services within rolling bearings, seals, mechatronics, services and lubrication systems. The company was founded in Sweden in 1907 - the same year as the ball bearing became a commercial product. E.B. Atmus represents SKF Products in four major categories:
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