These super-precision, high-capacity, single row angular contact ball bearings with non-contact seals accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. 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 |
25 mm
|
Bore diameter |
|---|---|---|
| D |
42 mm
|
Outside diameter |
| B |
9 mm
|
Width |
| d1 |
30.6 mm
|
Shoulder diameter of inner ring (large side face) |
| d2 |
30.6 mm
|
Shoulder diameter of inner ring (small side face) |
| D2 |
39.15 mm
|
Recess diameter of outer ring (large side face) |
| r1,2 |
min. 0.3 mm
|
Chamfer dimension |
| r3,4 |
min. 0.2 mm
|
Chamfer dimension |
| a |
12.4 mm
|
Distance from side face to pressure point |
| da |
min. 27 mm
|
Diameter of shaft abutment |
|---|---|---|
| da |
max. 30.1 mm
|
Diameter of shaft abutment |
| db |
min. 27 mm
|
Diameter of shaft abutment |
| db |
max. 30.1 mm
|
Diameter of shaft abutment |
| Da |
max. 40 mm
|
Diameter of housing abutment |
| Db |
max. 40.6 mm
|
Diameter of housing abutment |
| ra |
max. 0.3 mm
|
Radius of fillet |
| rb |
max. 0.2 mm
|
Radius of fillet |
| Basic dynamic load rating | C |
6.37 kN
|
|---|---|---|
| Basic static load rating | C0 |
3.8 kN
|
| Fatigue load limit | Pu |
0.16 kN
|
| Attainable speed for grease lubrication |
25 000 r/min
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
4.762 mm
|
| Number of rows | i |
1
|
| Number of balls (per bearing) | z |
18
|
| Preload when unmounted | G |
80 N
|
|---|
| Correction factor dependent on bearing series and size | f |
1.07
|
|---|---|---|
| Correction factor dependent on contact angle | f1 |
0.98
|
| Correction factor, preload class B | f2B |
1.04
|
| Limiting value | e |
0.68
|
|---|---|---|
| Additional factors for equivalent loads |
Refer to Notes 1 and 2 below
|
|
| 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 |
0.043 kg
|
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