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.
| Universal matching bearing(s) |
Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
|
| d |
12 mm
|
Bore diameter |
|---|---|---|
| D |
28 mm
|
Outside diameter |
| B |
8 mm
|
Width |
| d1 |
17.5 mm
|
Shoulder diameter of inner ring (large side face) |
| d2 |
16.5 mm
|
Shoulder diameter of inner ring (small side face) |
| D1 |
22.45 mm
|
Shoulder diameter of outer ring (large side face) |
| r1,2 |
min. 0.3 mm
|
Chamfer dimension |
| r3,4 |
min. 0.15 mm
|
Chamfer dimension |
| a |
6.7 mm
|
Distance from side face to pressure point |
| da |
min. 14 mm
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 14 mm
|
Diameter of shaft abutment |
| Da |
max. 26 mm
|
Diameter of housing abutment |
| Db |
max. 26.6 mm
|
Diameter of housing abutment |
| ra |
max. 0.3 mm
|
Radius of fillet |
| rb |
max. 0.15 mm
|
Radius of fillet |
| dn |
18.5 mm
|
Position of oil nozzle |
| Basic dynamic load rating | C |
3.19 kN
|
|---|---|---|
| Basic static load rating | C0 |
1.34 kN
|
| Fatigue load limit | Pu |
0.04 kN
|
| Attainable speeds |
Contact SKF for the attainable speeds
|
|
| Contact angle | α |
15 °
|
| Ball diameter | Dw |
3.969 mm
|
| Number of rows | i |
1
|
| Number of balls (per bearing) | z |
12
|
| Reference grease quantity (per bearing) | Gref |
0.31 cm³
|
| Preload class |
A
|
|
| Preload when unmounted | G |
17 N
|
| Axial stiffness |
15 N/µm
|
| Correction factor dependent on bearing series and size | f |
1.02
|
|---|---|---|
| Correction factor dependent on contact angle | f1 |
1
|
| Correction factor, preload class A | f2A |
1
|
| Correction factor for hybrid bearings | fHC |
1.01
|
| Calculation factor for equivalent loads | f0 |
7.3
|
|---|---|---|
| Additional factors for equivalent loads |
Refer to Notes 1 and 2 below
|
| Mass |
0.019 kg
|
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