These super-precision, high-speed, single row angular contact ball bearings with 15° or 25° contact angle accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. Compared to the equivalent SKF E design high-speed bearings, these are suited for lighter 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 |
50 mm
|
Bore diameter |
|---|---|---|
| D |
80 mm
|
Outside diameter |
| B |
16 mm
|
Width |
| d1 |
61.44 mm
|
Shoulder diameter of inner ring (large side face) |
| d2 |
59.65 mm
|
Shoulder diameter of inner ring (small side face) |
| D2 |
70.7 mm
|
Recess diameter of outer ring (large side face) |
| r1,2 |
min. 1 mm
|
Chamfer dimension |
| r3,4 |
min. 0.6 mm
|
Chamfer dimension |
| a |
23.2 mm
|
Distance from side face to pressure point |
| da |
min. 54.6 mm
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 54.6 mm
|
Diameter of shaft abutment |
| Da |
max. 75.4 mm
|
Diameter of housing abutment |
| Db |
max. 76.8 mm
|
Diameter of housing abutment |
| ra |
max. 1 mm
|
Radius of fillet |
| rb |
max. 0.6 mm
|
Radius of fillet |
| dn |
61.8 mm
|
Position of oil nozzle |
| Basic dynamic load rating | C |
9.36 kN
|
|---|---|---|
| Basic static load rating | C0 |
7.35 kN
|
| Fatigue load limit | Pu |
0.228 kN
|
| Attainable speeds |
Contact SKF for the attainable speeds
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
5.556 mm
|
| Number of rows | i |
1
|
| Number of balls (per bearing) | z |
27
|
| Reference grease quantity (per bearing) | Gref |
3.11 cm³
|
| Preload class |
A
|
|
| Preload when unmounted | G |
56 N
|
| Axial stiffness |
97 N/µm
|
| Correction factor dependent on bearing series and size | f |
1.06
|
|---|---|---|
| Correction factor dependent on contact angle | f1 |
0.99
|
| Correction factor, preload class A | f2A |
1
|
| Correction factor for hybrid bearings | fHC |
1.01
|
| Limiting value | 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 |
0.28 kg
|
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