7220 ACD/P4ADBBMatched set of two super-precision, high-capacity, D design, single row angular contact ball bearings

SKU: 7220 ACD/P4ADBBMatched set of two super-precision, high-capacity, D design, single row angular contact ball bearings

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:131705

Universal matching bearing(s)
No

Dimensions - 7220 ACD/P4ADBB

Dimensions

d
100 mm
Bore diameter
D
180 mm
Outside diameter
B
68 mm
Width
d1
124.7 mm
Shoulder diameter of inner ring (large side face)
r1,2
min. 2.1 mm
Chamfer dimension
r3,4
min. 1.1 mm
Chamfer dimension

Abutment dimensions - 7220 ACD/P4ADBBAbutment dimensions - 7220 ACD/P4ADBB

Abutment dimensions

da
min. 112 mm
Diameter of shaft abutment
Db
max. 173 mm
Diameter of housing abutment
ra
max. 2 mm
Radius of fillet
rb
max. 1 mm
Radius of fillet
dn
131.4 mm
Position of oil nozzle

Calculation data

Basic dynamic load rating C
242 000 N
Basic static load rating C0
260 000 N
Fatigue load limit Pu
9 300 N
Attainable speeds
Contact SKF for the attainable speeds
Contact angle α
25 °
Ball diameter Dw
25.4 mm
Number of rows i
2
Number of balls (per bearing) z
15
Reference grease quantity (per bearing) Gref
40.899 cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class
B
Preload G
1 900 N
Axial stiffness
388 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.09
Correction factor dependent on contact angle f1
0.99
Correction factor, preload class B f2B
1.01
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
6.48 kg

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