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SKF 727 ACD/HCP4A Angular Contact Ball Bearing

BRAND : SKF
Technical specification

DIMENSIONS

d

Details

Technical specification

DIMENSIONS

d
7 mm
D
22 mm
B
7 mm
d1
12.6 mm
d2
12.6 mm
D1
17.4 mm
r1,2
min. 0.3 mm
r3,4
min. 0.2 mm
a
7.1 mm

ABUTMENT DIMENSIONS

da
min. 9.4 mm
db
min. 9.4 mm
Da
max. 19.6 mm
Db
max. 20.2 mm
ra
max. 0.3 mm
rb
max. 0.2 mm
dn
13.6 mm

CALCULATION DATA

Basic dynamic load ratingC
2.91 kN
Basic static load ratingC0
1.12 kN
Fatigue load limitPu
0.034 kN
Attainable speed for grease lubrication
85000 r/min
Attainable speed for oil-air lubrication
130000 r/min
Contact angle?
25 °
Ball diameterDw
3.969 mm
Number of ballsz
9
Reference grease quantityGref
0.162 cm³
PRELOAD AND STIFFNESS (BACK-TO-BACK, FACE-TO-FACE)
Preload class AGA
18 N
Static axial stiffness, preload class A
30 N/µm
Preload class BGB
36 N
Static axial stiffness, preload class B
39 N/µm
Preload class CGC
72 N
Static axial stiffness, preload class C
51 N/µm
Preload class DGD
144 N
Static axial stiffness, preload class D
68 N/µm
CALCULATION FACTORS
Calculation factorf
1.02
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
0.012 kg