S7203 CD/P4ASuper-precision, high-capacity, single row angular contact ball bearing with seals

SKU: S7203 CD/P4ASuper-precision, high-capacity, single row angular contact ball bearing with seals

These super-precision, high-capacity, single row angular contact ball bearings, with 15° contact angle, with seals, accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. They are designed to accommodate heavy loads at relatively high speeds under low to moderate operating temperatures.

ID:144788

Universal matching bearing(s)
No

Dimensions - S7203 CD/P4A

Dimensions

d
17 mm
Bore diameter
D
40 mm
Outside diameter
B
12 mm
Width
d1
24.1 mm
Shoulder diameter of inner ring (large side face)
d2
24.1 mm
Shoulder diameter of inner ring (small side face)
D2
34.4 mm
Recess diameter of outer ring (large side face)
r1,2
min. 0.6 mm
Chamfer dimension
r3,4
min. 0.3 mm
Chamfer dimension
a
9.9 mm
Distance from side face to pressure point

Abutment dimensions - S7203 CD/P4A

Abutment dimensions

da
min. 21.2 mm
Diameter of shaft abutment
da
max. 23.5 mm
Diameter of shaft abutment
db
min. 21.2 mm
Diameter of shaft abutment
db
max. 23.5 mm
Diameter of shaft abutment
Da
max. 35.8 mm
Diameter of housing abutment
Db
max. 37.6 mm
Diameter of housing abutment
ra
max. 0.6 mm
Radius of fillet
rb
max. 0.3 mm
Radius of fillet

Calculation data

Basic dynamic load rating C
9.23 kN
Basic static load rating C0
4.15 kN
Fatigue load limit Pu
0.176 kN
Attainable speed for grease lubrication
43 000 r/min
Contact angle α
15 °
Ball diameter Dw
7.144 mm
Number of rows i
1
Number of balls (per bearing) z
10
Preload and stiffness (back-to-back, face-to-face)
Preload, class A GA
35 N
Axial stiffnes for preload A (sets of two brgs back to back or face to face)
21 N/µm
Preload, class B GB
70 N
Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face)
28 N/µm
Preload, class C GC
140 N
Axial stiffness for preload C (sets of two brgs back-to-back or face-to-face)
38 N/µm
Preload, class D GD
280 N
Axial stiffness for preload D (sets of two brgs back-to-back or face-to-face)
53 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.03
Correction factor dependent on contact angle f1
1
Correction factor, preload class A f2A
1
Correction factor, preload class B f2B
1.01
Correction factor, preload class C f2C
1.03
Correction factor, preload class D f2D
1.05
Correction factor for hybrid bearings fHC
1
Factors for equivalent bearing load calculation
Calculation factor for equivalent loads f0
8.5
Additional factors for equivalent loads
Refer to Notes 1 and 2 below

Mass

Mass
0.065 kg

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