71812 CD/P4DFAMatched set of two super-precision, high-capacity, D design, single row angular contact ball bearings

SKU: 71812 CD/P4DFAMatched set of two super-precision, high-capacity, D design, single row angular cont

These matched sets of two super-precision, high-capacity, D design, single row angular contact ball bearings are available in a variety of arrangements. They are designed for high-load capacity and relatively high speed operation and, compared to the equivalent SKF B and E design high-speed bearings, are best suited for heavier loads.

ID:135596

Universal matching bearing(s)
No

Dimensions - 71812 CD/P4DFA

Dimensions

d
60 mm
Bore diameter
D
78 mm
Outside diameter
B
20 mm
Width
d2
65.7 mm
Shoulder diameter of inner ring (small side face)
D1
72.5 mm
Shoulder diameter of outer ring (large side face)
r1,2
min. 0.3 mm
Chamfer dimension

Abutment dimensions - 71812 CD/P4DFAAbutment dimensions - 71812 CD/P4DFA

Abutment dimensions

db
min. 62 mm
Diameter of shaft abutment
Da
max. 76 mm
Diameter of housing abutment
ra
max. 0.3 mm
Radius of fillet
dn
66.4 mm
Position of oil nozzle

Calculation data

Basic dynamic load rating C
22 100 N
Basic static load rating C0
28 500 N
Fatigue load limit Pu
1 200 N
Attainable speeds
Contact SKF for the attainable speeds
Contact angle α
15 °
Ball diameter Dw
5.556 mm
Number of rows i
2
Number of balls (per bearing) z
28
Reference grease quantity (per bearing) Gref
1.2 cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class
A
Preload G
70 N
Axial stiffness
59 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.3
Correction factor dependent on contact angle f1
1
Correction factor, preload class A f2A
1
Correction factor for hybrid bearings fHC
1
Factors for equivalent bearing load calculation
Calculation factor for equivalent loads f0
17
Additional factors for equivalent loads
Refer to Notes 1 and 2 below

Mass

Mass
0.2 kg

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