7218 ACD/HCP4ADGAMatched set of two super-precision, high-capacity, D design, single row angular contact ball bearings

SKU: 7218 ACD/HCP4ADGAMatched set of two super-precision, high-capacity, D design, single row angular c

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:144043

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

Dimensions - 7218 ACD/HCP4ADGA

Dimensions

d
90 mm
Bore diameter
D
160 mm
Outside diameter
B
60 mm
Width
d1
111.6 mm
Shoulder diameter of inner ring (large side face)
d2
111.6 mm
Shoulder diameter of inner ring (small side face)
D1
138.4 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 - 7218 ACD/HCP4ADGAAbutment dimensions - 7218 ACD/HCP4ADGA

Abutment dimensions

da
min. 101 mm
Diameter of shaft abutment
db
min. 101 mm
Diameter of shaft abutment
Da
max. 149 mm
Diameter of housing abutment
Db
max. 154.4 mm
Diameter of housing abutment
ra
max. 2 mm
Radius of fillet
rb
max. 1 mm
Radius of fillet
dn
117.5 mm
Position of oil nozzle

Calculation data

Basic dynamic load rating C
199 000 N
Basic static load rating C0
212 000 N
Fatigue load limit Pu
5 850 N
Attainable speeds
Contact SKF for the attainable speeds
Contact angle α
25 °
Ball diameter Dw
22.225 mm
Number of rows i
2
Number of balls (per bearing) z
16
Reference grease quantity (per bearing) Gref
27.765 cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class
A
Preload G
750 N
Axial stiffness
303 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 A f2A
1
Correction factor for hybrid bearings fHC
1.01
Factors for equivalent bearing load calculation
Calculation factor e
0.68
Axial load factor (single, tandem) Y1
0
Axial load factor (single, tandem) Y2
0.87
Axial load factor (single, tandem) Y0
0.38
Radial load factor (single, tandem) X1
1
Radial load factor (single, tandem) X2
0.41
Radial load factor (single, tandem) X0
0.5
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
3.67 kg

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