SKF 71908ACB/P4AL Angular contact ball bearings,SKF 71908 ACB/P4AL Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71908 ACB/P4AL

71908 ACB/P4AL

Dimensions
d 40mm
D 62mm
B 12mm
d1 48.46mm
d2 47.6mm
D2 55.64mm
b 2mm
C1 5.9mm
C2 2.8mm
C3 1.7mm
r1,2min.0.6mm
r3,4min.0.3mm
a 20.2mm
Abutment dimensions
damin.43.2mm
dbmin.43.2mm
Damax.58.8mm
Dbmax.60mm
ramax.0.6mm
rbmax.0.3mm
dn 49.1mm
Calculation data
Basic dynamic load ratingC 6.76kN
Basic static load ratingC0 6.4kN
Fatigue load limitPu 0.166kN
Attainable speed for grease lubrication  28000r/min
Attainable speed for oil-air lubrication  43000r/min
Ball diameterDw 3.969mm
Number of ballsz 28 
Reference grease quantityGref 1.38cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 31N
Static axial stiffness, preload class A  65N/µm
Preload class BGB 62N
Static axial stiffness, preload class B  83N/µm
Preload class CGC 185N
Static axial stiffness, preload class C  124N/µm
Calculation factors
Calculation factorf 1.06 
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  0.12kg
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Hot number: 16026 15500 2211 E-2RS1TN9 BD-230/850 CAK/W33-AOH 30/850 50x72x10 HMS5 RG 65x85x12 HMS5 V FYJ 40 TF FYTB 2.3/16 TF GS 89311 NKX 35 Z NU 2311 ECPH PCM 222530 M SAW 23226 TLC SSAFS 22518 x 3.1/16 TLC W 619/5 R-2Z

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