SKF 7021ACD/P4A Angular contact ball bearings,SKF 7021 ACD/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 7021 ACD/P4A

7021 ACD/P4A

Dimensions
d 105mm
D 160mm
B 26mm
d1 121.9mm
d2 121.9mm
D1 143.1mm
r1,2min.2mm
r3,4min.1mm
a 44mm
Abutment dimensions
damin.114mm
dbmin.114mm
Damax.151mm
Dbmax.155mm
ramax.2mm
rbmax.1mm
dn 125.6mm
Calculation data
Basic dynamic load ratingC 90.4kN
Basic static load ratingC0 93kN
Fatigue load limitPu 3.4kN
Attainable speed for grease lubrication  7500r/min
Attainable speed for oil-air lubrication  12000r/min
Ball diameterDw 17.462mm
Number of ballsz 21 
Reference grease quantityGref 20.4cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 560N
Static axial stiffness, preload class A  279N/µm
Preload class BGB 1120N
Static axial stiffness, preload class B  365N/µm
Preload class CGC 2240N
Static axial stiffness, preload class C  484N/µm
Preload class DGD 4480N
Static axial stiffness, preload class D  655N/µm
Calculation factors
Calculation factorf 1.15 
Calculation factorf1 0.99 
Calculation factorf2A 1 
Calculation factorf2B 1.02 
Calculation factorf2C 1.05 
Calculation factorf2D 1.08 
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  1.59kg
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Hot number: 100x150x12 HMSA10 RG 1950 VE R 19832 23044 CCK/W33 + AOH 3044 G 23936 CCK/W33 614609 71924 ACD/HCP4AH1 7312 BECBP 99823 BEAM 020068-2RZ/PE BT4B 331333 BG/HA1 K 89416 M PCM 242730 E SSAFS 22230 TLC Z 202

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