7021 CD/P4ADGCMatched set of two super-precision, high-capacity, D design, single row angular contact ball bearings

SKU: 7021 CD/P4ADGCMatched 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:131965

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

Dimensions - 7021 CD/P4ADGC

Dimensions

d
105 mm
Bore diameter
D
160 mm
Outside diameter
B
52 mm
Width
d1
121.9 mm
Shoulder diameter of inner ring (large side face)
d2
121.9 mm
Shoulder diameter of inner ring (small side face)
D1
143.1 mm
Shoulder diameter of outer ring (large side face)
r1,2
min. 2 mm
Chamfer dimension
r3,4
min. 1 mm
Chamfer dimension

Abutment dimensions - 7021 CD/P4ADGCAbutment dimensions - 7021 CD/P4ADGC

Abutment dimensions

da
min. 114 mm
Diameter of shaft abutment
db
min. 114 mm
Diameter of shaft abutment
Da
max. 151 mm
Diameter of housing abutment
Db
max. 155 mm
Diameter of housing abutment
ra
max. 2 mm
Radius of fillet
rb
max. 1 mm
Radius of fillet
dn
125.6 mm
Position of oil nozzle

Calculation data

Basic dynamic load rating C
156 000 N
Basic static load rating C0
193 000 N
Fatigue load limit Pu
7 200 N
Attainable speeds
Contact SKF for the attainable speeds
Contact angle α
15 °
Ball diameter Dw
17.462 mm
Number of rows i
2
Number of balls (per bearing) z
21
Reference grease quantity (per bearing) Gref
20.4 cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class
C
Preload G
1 440 N
Axial stiffness
223 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.15
Correction factor dependent on contact angle f1
1
Correction factor, preload class C f2C
1.05
Correction factor for hybrid bearings fHC
1
Factors for equivalent bearing load calculation
Calculation factor for equivalent loads f0
15.7
Additional factors for equivalent loads
Refer to Notes 1 and 2 below

Mass

Mass
3.18 kg

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