7003 ACD/P4AHSuper-precision, high-capacity, single row angular contact ball bearing suitable for direct oil-air lubrication

SKU: 7003 ACD/P4AHSuper-precision, high-capacity, single row angular contact ball bearing suitable for

These super-precision, high-capacity, single row angular contact ball bearings, with 25° contact angle, 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. They have two lubrication holes in their outer rings.

ID:144164

Universal matching bearing(s)
No

Dimensions - 7003 ACD/P4AH

Dimensions

d
17 mm
Bore diameter
D
35 mm
Outside diameter
B
10 mm
Width
d1
22.6 mm
Shoulder diameter of inner ring (large side face)
d2
22.6 mm
Shoulder diameter of inner ring (small side face)
D1
29.3 mm
Shoulder diameter of outer ring (large side face)
K
0.5 mm
Diameter of lubrication hole
C1
6.05 mm
Distance from outer ring side face to lubrication groove / lubrication hole
r1,2
min. 0.3 mm
Chamfer dimension
r3,4
min. 0.2 mm
Chamfer dimension
a
11.2 mm
Distance from side face to pressure point

Abutment dimensions - 7003 ACD/P4AH

Abutment dimensions

da
min. 19 mm
Diameter of shaft abutment
db
min. 19 mm
Diameter of shaft abutment
Da
max. 33 mm
Diameter of housing abutment
Db
max. 33.6 mm
Diameter of housing abutment
ra
max. 0.3 mm
Radius of fillet
rb
max. 0.2 mm
Radius of fillet

Calculation data

Basic dynamic load rating C
6.5 kN
Basic static load rating C0
3.1 kN
Fatigue load limit Pu
0.132 kN
Attainable speed for grease lubrication
45 000 r/min
Attainable speed for oil-air lubrication
70 000 r/min
Contact angle α
25 °
Ball diameter Dw
5.556 mm
Number of rows i
1
Number of balls (per bearing) z
12
Reference grease quantity (per bearing) Gref
0.54 cm³
Preload and stiffness (back-to-back, face-to-face)
Preload, class A GA
40 N
Axial stiffnes for preload A (sets of two brgs back to back or face to face)
48 N/µm
Preload, class B GB
80 N
Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face)
62 N/µm
Preload, class C GC
160 N
Axial stiffness for preload C (sets of two brgs back-to-back or face-to-face)
81 N/µm
Preload, class D GD
320 N
Axial stiffness for preload D (sets of two brgs back-to-back or face-to-face)
107 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.04
Correction factor dependent on contact angle f1
0.99
Correction factor, preload class A f2A
1
Correction factor, preload class B f2B
1.02
Correction factor, preload class C f2C
1.05
Correction factor, preload class D f2D
1.08
Correction factor for hybrid bearings fHC
1
Factors for equivalent bearing load calculation
Limiting value e
0.68
Axial load factor (single, tandem) Y2
0.87
Axial load factor (single, tandem) Y0
0.38
Radial load factor (single, tandem) X2
0.41
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) X2
0.67

Mass

Mass
0.038 kg

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