7020 ACE/P4ADBAMatched set of two super-precision, high-speed E design, single row angular contact ball bearings

SKU: 7020 ACE/P4ADBAMatched set of two super-precision, high-speed E design, single row angular contact ball bearings

These matched sets of two super-precision, high-speed, E design, single row angular contact ball bearings are available in a variety of arrangements. Compared to the equivalent SKF B design high-speed bearings, these have a slightly higher speed capability and can accommodate heavier loads.

ID:131397

Universal matching bearing(s)
No

Dimensions - 7020 ACE/P4ADBA

Dimensions

d
100 mm
Bore diameter
D
150 mm
Outside diameter
B
48 mm
Width
d1
117.38 mm
Shoulder diameter of inner ring (large side face)
r1,2
min. 1.5 mm
Chamfer dimension
r3,4
min. 1 mm
Chamfer dimension

Abutment dimensions - 7020 ACE/P4ADBAAbutment dimensions - 7020 ACE/P4ADBA

Abutment dimensions

da
min. 107 mm
Diameter of shaft abutment
Db
max. 144.4 mm
Diameter of housing abutment
ra
max. 1.5 mm
Radius of fillet
rb
max. 1 mm
Radius of fillet
dn
120.4 mm
Position of oil nozzle

Calculation data

Basic dynamic load rating C
68 900 N
Basic static load rating C0
75 000 N
Fatigue load limit Pu
2 850 N
Attainable speeds
Contact SKF for the attainable speeds
Contact angle α
25 °
Ball diameter Dw
12.7 mm
Number of rows i
2
Number of balls (per bearing) z
27
Reference grease quantity (per bearing) Gref
17 cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class
A
Preload G
390 N
Axial stiffness
220 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.12
Correction factor dependent on contact angle f1
0.99
Correction factor, preload class A f2A
1
Correction factor for hybrid bearings fHC
1
Factors for equivalent bearing load calculation
Axial load factor (back-to-back, face-to-face) Y1
0.92
Axial load factor (back-to-back, face-to-face) Y2
1.41
Axial load factor (back-to-back, face-to-face) Y0
0.76
Radial load factor (back-to-back, face-to-face) X1
1
Radial load factor (back-to-back, face-to-face) X2
0.67
Radial load factor (back-to-back, face-to-face) X0
1

Mass

Mass
2.52 kg

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