7021 ACD/P4ADBDMatched set of two super-precision, high-capacity, D design, single row angular contact ball bearings

SKU: 7021 ACD/P4ADBDMatched 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:131927

Universal matching bearing(s)
No

Dimensions - 7021 ACD/P4ADBD

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)
r1,2
min. 2 mm
Chamfer dimension
r3,4
min. 1 mm
Chamfer dimension

Abutment dimensions - 7021 ACD/P4ADBDAbutment dimensions - 7021 ACD/P4ADBD

Abutment dimensions

da
min. 114 mm
Diameter of shaft 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
148 000 N
Basic static load rating C0
186 000 N
Fatigue load limit Pu
6 800 N
Attainable speeds
Contact SKF for the attainable speeds
Contact angle α
25 °
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
D
Preload G
4 480 N
Axial stiffness
655 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
0.99
Correction factor, preload class D f2D
1.08
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
3.18 kg

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