S71920 CEGA/HCP4ASuper-precision, high speed, E design, universally matchable single row angular contact ball bearing with seals

SKU: S71920 CEGA/HCP4ASuper-precision, high speed, E design, universally matchable single row angular contact ball bearing with seals

These super-precision, high-speed, E design, single row angular contact ball bearings, with non-contact seals, accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. They are designed for high-speed operation and, compared to SKF B design high-speed bearings, have a slightly higher speed capability and can accommodate heavier loads. Being universally matchable, they can be used together in arrangements to provide effective load sharing, without the use of shims or similar devices.

ID:131920

Universal matching bearing(s)
Yes, back-to-back (<>), face-to-face (><) or tandem (>>)

Dimensions - S71920 CEGA/HCP4A

Dimensions

d
100 mm
Bore diameter
D
140 mm
Outside diameter
B
20 mm
Width
d1
112.4 mm
Shoulder diameter of inner ring (large side face)
d2
109 mm
Shoulder diameter of inner ring (small side face)
D2
130.9 mm
Recess diameter of outer ring (large side face)
r1,2
min. 1.1 mm
Chamfer dimension
r3,4
min. 0.6 mm
Chamfer dimension
a
26 mm
Distance from side face to pressure point

Abutment dimensions - S71920 CEGA/HCP4A

Abutment dimensions

da
min. 106 mm
Diameter of shaft abutment
da
max. 111.8 mm
Diameter of shaft abutment
db
min. 103.2 mm
Diameter of shaft abutment
db
max. 108.4 mm
Diameter of shaft abutment
Da
max. 134 mm
Diameter of housing abutment
Db
max. 136.8 mm
Diameter of housing abutment
ra
max. 1 mm
Radius of fillet
rb
max. 0.6 mm
Radius of fillet

Calculation data

Basic dynamic load rating C
39 kN
Basic static load rating C0
31.5 kN
Fatigue load limit Pu
0.88 kN
Attainable speeds
Contact SKF for the attainable speeds
Contact angle α
15 °
Ball diameter Dw
12.7 mm
Number of rows i
1
Number of balls (per bearing) z
24
Preload and stiffness (back-to-back, face-to-face)
Preload class
A
Preload when unmounted G
208 N
Axial stiffness
81 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.18
Correction factor dependent on contact angle f1
1
Correction factor, preload class A f2A
1
Correction factor for hybrid bearings fHC
1.01
Factors for equivalent bearing load calculation
Calculation factor for equivalent loads f0
8.4
Additional factors for equivalent loads
Refer to Notes 1 and 2 below
Axial load factor (back-to-back, face-to-face) Y0
0.92
Radial load factor (back-to-back, face-to-face) X1
1
Radial load factor (back-to-back, face-to-face) X2
0.72
Radial load factor (back-to-back, face-to-face) X0
1

Mass

Mass
0.66 kg

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