These super-precision, high-capacity, 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 to accommodate heavy loads at relatively high speeds under low to moderate operating temperatures. 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 |
220 mm
|
Bore diameter |
|---|---|---|
| D |
340 mm
|
Outside diameter |
| B |
56 mm
|
Width |
| d1 |
257 mm
|
Shoulder diameter of inner ring (large side face) |
| d2 |
257 mm
|
Shoulder diameter of inner ring (small side face) |
| D1 |
303 mm
|
Shoulder diameter of outer ring (large side face) |
| r1,2 |
min. 3 mm
|
Chamfer dimension |
| r3,4 |
min. 1.5 mm
|
Chamfer dimension |
| a |
93.6 mm
|
Distance from side face to pressure point |
| da |
min. 233 mm
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 233 mm
|
Diameter of shaft abutment |
| Da |
max. 327 mm
|
Diameter of housing abutment |
| Db |
max. 334 mm
|
Diameter of housing abutment |
| ra |
max. 2.5 mm
|
Radius of fillet |
| rb |
max. 1.5 mm
|
Radius of fillet |
| dn |
267.1 mm
|
Position of oil nozzle |
| Basic dynamic load rating | C |
319 kN
|
|---|---|---|
| Basic static load rating | C0 |
440 kN
|
| Fatigue load limit | Pu |
11 kN
|
| Attainable speeds |
Contact SKF for the attainable speeds
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
38.1 mm
|
| Number of rows | i |
1
|
| Number of balls (per bearing) | z |
21
|
| Reference grease quantity (per bearing) | Gref |
201 cm³
|
| Preload class |
A
|
|
| Preload when unmounted | G |
2 000 N
|
| Axial stiffness |
546 N/µm
|
| Correction factor dependent on bearing series and size | f |
1.13
|
|---|---|---|
| Correction factor dependent on contact angle | f1 |
0.99
|
| Correction factor, preload class A | f2A |
1
|
| Correction factor for hybrid bearings | fHC |
1
|
| 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 |
16.1 kg
|
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