These super-precision, high-capacity, single row angular contact ball bearings, with 25° contact angle, 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. They have two lubrication holes in their outer rings.
| Universal matching bearing(s) |
No
|
| d |
15 mm
|
Bore diameter |
|---|---|---|
| D |
32 mm
|
Outside diameter |
| B |
9 mm
|
Width |
| d1 |
20.6 mm
|
Shoulder diameter of inner ring (large side face) |
| d2 |
20.6 mm
|
Shoulder diameter of inner ring (small side face) |
| D1 |
26.4 mm
|
Shoulder diameter of outer ring (large side face) |
| K |
0.5 mm
|
Diameter of lubrication hole |
| C1 |
5.35 mm
|
Distance from outer ring side face to lubrication groove / lubrication hole |
| r1,2 |
min. 0.3 mm
|
Chamfer dimension |
| r3,4 |
min. 0.2 mm
|
Chamfer dimension |
| a |
10.1 mm
|
Distance from side face to pressure point |
| da |
min. 17 mm
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 17 mm
|
Diameter of shaft abutment |
| Da |
max. 30 mm
|
Diameter of housing abutment |
| Db |
max. 30.6 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 |
4.94 kN
|
|---|---|---|
| Basic static load rating | C0 |
2.32 kN
|
| Fatigue load limit | Pu |
0.072 kN
|
| Attainable speed for grease lubrication |
60 000 r/min
|
|
| Attainable speed for oil-air lubrication |
95 000 r/min
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
4.762 mm
|
| Number of rows | i |
1
|
| Number of balls (per bearing) | z |
12
|
| Reference grease quantity (per bearing) | Gref |
0.39 cm³
|
| Preload, class A | GA |
30 N
|
|---|---|---|
| Axial stiffnes for preload A (sets of two brgs back to back or face to face) |
46 N/µm
|
|
| Preload, class B | GB |
60 N
|
| Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face) |
59 N/µm
|
|
| Preload, class C | GC |
120 N
|
| Axial stiffness for preload C (sets of two brgs back-to-back or face-to-face) |
77 N/µm
|
|
| Preload, class D | GD |
240 N
|
| Axial stiffness for preload D (sets of two brgs back-to-back or face-to-face) |
102 N/µm
|
| Correction factor dependent on bearing series and size | f |
1.03
|
|---|---|---|
| Correction factor dependent on contact angle | f1 |
0.99
|
| Correction factor, preload class A | f2A |
1
|
| Correction factor, preload class B | f2B |
1.02
|
| Correction factor, preload class C | f2C |
1.05
|
| Correction factor, preload class D | f2D |
1.08
|
| Correction factor for hybrid bearings | fHC |
1.02
|
| Limiting value | e |
0.68
|
|---|---|---|
| Axial load factor (single, tandem) | Y2 |
0.87
|
| Axial load factor (single, tandem) | Y0 |
0.38
|
| Radial load factor (single, tandem) | X2 |
0.41
|
| 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) | X2 |
0.67
|
| Mass |
0.027 kg
|
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