SKF S71920ACB/P4A Angular contact ball bearings,SKF S71920 ACB/P4A 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 ACB/P4A

S71920 ACB/P4A

Dimensions
d 100mm
D 140mm
B 20mm
d1 114.92mm
d2 113.16mm
D2 128.7mm
r1,2min.1.1mm
r3,4min.0.6mm
a 41.4mm
Abutment dimensions
damin.106mm
damax.114.2mm
dbmin.106mm
dbmax.112.5mm
Damax.134mm
Dbmax.136.8mm
ramax.1mm
rbmax.0.6mm
Calculation data
Basic dynamic load ratingC 27.6kN
Basic static load ratingC0 33.5kN
Fatigue load limitPu 0.815kN
Attainable speed for grease lubrication  11000r/min
Ball diameterDw 7.938mm
Number of ballsz 37 
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 125N
Static axial stiffness, preload class A  157N/µm
Preload class BGB 250N
Static axial stiffness, preload class B  202N/µm
Preload class CGC 750N
Static axial stiffness, preload class C  306N/µm
Calculation factors
Calculation factorf 1.11 
Calculation factorf1 0.99 
Calculation factorf2A 1 
Calculation factorf2B 1.02 
Calculation factorf2C 1.07 
Calculation factorfHC 1 
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  0.88kg
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Hot number： 18659 19635 32318 400801 540x590x20 HDS1 R 6209-2Z 99284 IR 25x30x17 NJ 2215 ECJ RN-2x19.8 BF/G2 S7216 CD/HCP4A SAF 1518 x 3.1/16 SAFS 22516-11 x 2.5/8 TLC SNW 130x5.1/8 YEL 207-107-2F

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