7005 CEGA/P4A
Super-precision, high-speed E design, universally matchable single row angular contact ball bearing
These super-precision, high-speed, E design, single row angular contact ball bearings accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only.
They are designed for high-speed operation and, compared to SKF B design high-speed bearings, have a slightly higher speed capability and can accommodate heavier loads. Being universally matchable, they can be used together in arrangements to provide effective load sharing, within a predetermined preload range, without the use of shims or similar devices.
- Very high running accuracy
- Accommodate very high speeds
- Universally matchable
Dimensions
| d |
25 mm
|
Bore diameter |
| D |
47 mm
|
Outside diameter |
| B |
12 mm
|
Width |
| d1 |
31.6 mm
|
Shoulder diameter of inner ring (large side face) |
| d2 |
29.8 mm
|
Shoulder diameter of inner ring (small side face) |
| D1 |
39.21 mm
|
Shoulder diameter of outer ring (large side face) |
| r1,2 |
min.0.6 mm
|
Chamfer dimension |
| r3,4 |
min.0.3 mm
|
Chamfer dimension |
| a |
10.8 mm
|
Distance from side face to pressure point |
Abutment dimensions
| da |
min.28.2 mm
|
Diameter of shaft abutment |
| db |
min.28.2 mm
|
Diameter of shaft abutment |
| Da |
max.43.8 mm
|
Diameter of housing abutment |
| Db |
max.44.6 mm
|
Diameter of housing abutment |
| ra |
max.0.6 mm
|
Radius of fillet |
| rb |
max.0.3 mm
|
Radius of fillet |
| dn |
33.1 mm
|
Position of oil nozzle |
Calculation data
| Basic dynamic load rating |
C |
8.32 kN
|
| Basic static load rating |
C0 |
4.15 kN
|
| Fatigue load limit |
Pu |
0.173 kN
|
| Attainable speed for grease lubrication |
|
To be calculated: Single bearing (46000) x speed reduction factor (see table below)
|
| Attainable speed for oil-air lubrication |
|
To be calculated: Single bearing (70000) x speed reduction factor (see table below)
|
| Contact angle |
α |
15 °
|
| Ball diameter |
Dw |
6.35 mm
|
| Number of rows |
i |
1
|
| Number of balls (per bearing) |
z |
14
|
| Reference grease quantity (per bearing) |
Gref |
1.3 cm³
|
Preload and stiffness (back-to-back, face-to-face)
| Preload class |
|
A
|
| Preload when unmounted |
G |
45 N
|
| Axial stiffness |
|
24 N/µm
|
Correction factors for preload calculation
| Correction factor dependent on bearing series and size |
f |
1.05
|
| Correction factor dependent on contact angle |
f1 |
1
|
| Correction factor, preload class A |
f2A |
1
|
| Correction factor for hybrid bearings |
fHC |
1
|
Factors for equivalent bearing load calculation
| Calculation factor for equivalent loads |
f0 |
7.5
|
