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SKF 7211 ACD/HCP4A Angular Contact Ball Bearing

BRAND : SKF

Technical specification

DIMENSIONS

Details

Technical specification

DIMENSIONS

d
55 mm
D
100 mm
B
21 mm
d1
68.9 mm
d2
68.9 mm
D1
86.1 mm
r1,2
min. 1.5 mm
r3,4
min. 0.6 mm
a
28.7 mm

ABUTMENT DIMENSIONS

da
min. 64 mm
db
min. 64 mm
Da
max. 91 mm
Db
max. 95.8 mm
ra
max. 1.5 mm
rb
max. 0.6 mm
dn
72.6 mm

CALCULATION DATA

Basic dynamic load ratingC
52.7 kN
Basic static load ratingC0
40.5 kN
Fatigue load limitPu
1.27 kN
Attainable speed for grease lubrication
15000 r/min
Attainable speed for oil-air lubrication
24000 r/min
Contact angle?
25 °
Ball diameterDw
14.288 mm
Number of ballsz
15
Reference grease quantityGref
8.595 cm³
PRELOAD AND STIFFNESS (BACK-TO-BACK, FACE-TO-FACE)
Preload class AGA
330 N
Static axial stiffness, preload class A
191 N/µm
Preload class BGB
660 N
Static axial stiffness, preload class B
248 N/µm
Preload class CGC
1320 N
Static axial stiffness, preload class C
329 N/µm
Preload class DGD
2640 N
Static axial stiffness, preload class D
443 N/µm
CALCULATION FACTORS
Calculation factorf
1.08
Calculation factorf1
0.99
Calculation factorf2A
1
Calculation factorf2B
1.01
Calculation factorf2C
1.03
Calculation factorf2D
1.06
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
0.51 kg