These sets of four matched super-precision angular contact ball bearings are available as universally matchable bearings or in preconfigured arrangements. Sets of four bearings arranged in tandem need to be mounted against a single bearing, or a set of bearings in tandem, to achieve the desired preload. All the other arrangements are available in different preload classes and correct mounting results in preload within a predetermined range, without the need for shims or similar devices. The bore and outside diameters of the bearings are matched to within a maximum of one-third of the permitted diameter tolerance, to provide better load distribution than single universally matchable bearings.
| Universal matching bearing(s) |
Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
|
| d |
150 mm
|
Bore diameter |
|---|---|---|
| D |
225 mm
|
Outside diameter |
| B |
140 mm
|
Width |
| d1 |
173.1 mm
|
Shoulder diameter of inner ring (large side face) |
| d2 |
173.1 mm
|
Shoulder diameter of inner ring (small side face) |
| D1 |
201.9 mm
|
Shoulder diameter of outer ring (large side face) |
| r1,2 |
min. 2.1 mm
|
Chamfer dimension |
| r3,4 |
min. 1 mm
|
Chamfer dimension |
| da |
min. 161 mm
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 161 mm
|
Diameter of shaft abutment |
| Da |
max. 214 mm
|
Diameter of housing abutment |
| Db |
max. 220 mm
|
Diameter of housing abutment |
| ra |
max. 2 mm
|
Radius of fillet |
| rb |
max. 1 mm
|
Radius of fillet |
| dn |
178.2 mm
|
Position of oil nozzle |
| Basic dynamic load rating | C |
436 000 N
|
|---|---|---|
| Basic static load rating | C0 |
720 000 N
|
| Fatigue load limit | Pu |
22 400 N
|
| Attainable speeds |
Contact SKF for the attainable speeds
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
23.812 mm
|
| Number of rows | i |
4
|
| Number of balls (per bearing) | z |
22
|
| Reference grease quantity (per bearing) | Gref |
54 cm³
|
| Preload class |
A
|
|
| Preload and stiffness |
Preload and stiffness depend on final arrangement. Contact SKF
|
| Correction factor dependent on bearing series and size | f |
1.16
|
|---|---|---|
| Correction factor dependent on contact angle | f1 |
0.99
|
| Correction factor, preload class A | f2A |
1
|
| Correction factor for hybrid bearings | fHC |
1
|
| Mass |
16.7 kg
|
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