These matched sets of two super-precision, high-capacity, D design, single row angular contact ball bearings are available in a variety of arrangements. They are designed for high-load capacity and relatively high speed operation and, compared to the equivalent SKF B and E design high-speed bearings, are best suited for heavier loads.
| Universal matching bearing(s) |
No
|
| d |
220 mm
|
Bore diameter |
|---|---|---|
| D |
300 mm
|
Outside diameter |
| B |
76 mm
|
Width |
| d1 |
244.7 mm
|
Shoulder diameter of inner ring (large side face) |
| r1,2 |
min. 2.1 mm
|
Chamfer dimension |
| r3,4 |
min. 1 mm
|
Chamfer dimension |
| da |
min. 231 mm
|
Diameter of shaft abutment |
|---|---|---|
| Db |
max. 295 mm
|
Diameter of housing abutment |
| ra |
max. 2 mm
|
Radius of fillet |
| rb |
max. 1 mm
|
Radius of fillet |
| dn |
251.4 mm
|
Position of oil nozzle |
| Basic dynamic load rating | C |
338 000 N
|
|---|---|---|
| Basic static load rating | C0 |
570 000 N
|
| Fatigue load limit | Pu |
15 000 N
|
| Attainable speeds |
Contact SKF for the attainable speeds
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
25.4 mm
|
| Number of rows | i |
2
|
| Number of balls (per bearing) | z |
29
|
| Reference grease quantity (per bearing) | Gref |
84 cm³
|
| Preload class |
C
|
|
| Preload | G |
5 200 N
|
| Axial stiffness |
934 N/µm
|
| Correction factor dependent on bearing series and size | f |
1.28
|
|---|---|---|
| Correction factor dependent on contact angle | f1 |
0.98
|
| Correction factor, preload class C | f2C |
1.08
|
| Correction factor for hybrid bearings | fHC |
1
|
| 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 |
13.2 kg
|
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