SKF S71920ACE/HCP4A Angular contact ball bearings,SKF S71920 ACE/HCP4A Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71920 ACE/HCP4A

S71920 ACE/HCP4A

Dimensions
d 100mm
D 140mm
B 20mm
d1 112.4mm
d2 109mm
D2 130.9mm
r1,2min.1.1mm
r3,4min.0.6mm
a 39.2mm
Abutment dimensions
damin.106mm
damax.111.8mm
dbmin.103.2mm
dbmax.108.4mm
Damax.134mm
Dbmax.136.8mm
ramax.1mm
rbmax.0.6mm
Calculation data
Basic dynamic load ratingC 36.4kN
Basic static load ratingC0 30kN
Fatigue load limitPu 1.14kN
Attainable speed for grease lubrication  13700r/min
Ball diameterDw 12.7mm
Number of ballsz 24 
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 332N
Static axial stiffness, preload class A  207N/µm
Preload class BGB 996N
Static axial stiffness, preload class B  311N/µm
Preload class CGC 1990N
Static axial stiffness, preload class C  408N/µm
Calculation factors
Calculation factorf 1.18 
Calculation factorf1 0.98 
Calculation factorf2A 1 
Calculation factorf2B 1.04 
Calculation factorf2C 1.08 
Calculation factorfHC 1.01 
Calculation factore 0.68 
Calculation factor (single, tandem)Y2 0.87 
Calculation factor (single, tandem)Y0 0.38 
Calculation factor (single, tandem)X2 0.41 
Calculation factor (back-to-back, face-to-face)Y1 0.92 
Calculation factor (back-to-back, face-to-face)Y2 1.41 
Calculation factor (back-to-back, face-to-face)Y0 0.76 
Calculation factor (back-to-back, face-to-face)X2 0.67 
Mass
Mass bearing  0.66kg
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Hot number： 19886 22208 E 313555 B 80x115x12 HMS5 V BT1B 332705/HA4 BC1B 319579 HK 0509 KMD 4 KR 16 PPSKA NATV 20 NU 318 ECP OKC 100 PBM 95115120 M1G1 PSM 202615 A51 YAT 210

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