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, an annular groove, and two annular O-ring grooves in their outer rings.
| Universal matching bearing(s) |
No
|
| d |
120 mm
|
Bore diameter |
|---|---|---|
| D |
180 mm
|
Outside diameter |
| B |
28 mm
|
Width |
| d1 |
138.5 mm
|
Shoulder diameter of inner ring (large side face) |
| d2 |
138.5 mm
|
Shoulder diameter of inner ring (small side face) |
| D1 |
161.5 mm
|
Shoulder diameter of outer ring (large side face) |
| b |
2.8 mm
|
Width of lubrication groove |
| C1 |
15 mm
|
Distance from outer ring side face to lubrication groove / lubrication hole |
| C2 |
6.2 mm
|
Distance from outer ring side face to O-ring groove |
| C3 |
5.4 mm
|
Distance from outer ring side face to O-ring groove |
| r1,2 |
min. 2 mm
|
Chamfer dimension |
| r3,4 |
min. 1 mm
|
Chamfer dimension |
| a |
49.1 mm
|
Distance from side face to pressure point |
| da |
min. 129 mm
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 129 mm
|
Diameter of shaft abutment |
| Da |
max. 171 mm
|
Diameter of housing abutment |
| Db |
max. 175 mm
|
Diameter of housing abutment |
| ra |
max. 2 mm
|
Radius of fillet |
| rb |
max. 1 mm
|
Radius of fillet |
| Basic dynamic load rating | C |
111 kN
|
|---|---|---|
| Basic static load rating | C0 |
116 kN
|
| Fatigue load limit | Pu |
4 kN
|
| Attainable speed for grease lubrication |
6 700 r/min
|
|
| Attainable speed for oil-air lubrication |
10 000 r/min
|
|
| Contact angle | α |
25 °
|
| Ball diameter | Dw |
19.05 mm
|
| Number of rows | i |
1
|
| Number of balls (per bearing) | z |
22
|
| Reference grease quantity (per bearing) | Gref |
27 cm³
|
| Preload, class A | GA |
690 N
|
|---|---|---|
| Axial stiffnes for preload A (sets of two brgs back to back or face to face) |
318 N/µm
|
|
| Preload, class B | GB |
1 380 N
|
| Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face) |
416 N/µm
|
|
| Preload, class C | GC |
2 760 N
|
| Axial stiffness for preload C (sets of two brgs back-to-back or face-to-face) |
552 N/µm
|
|
| Preload, class D | GD |
5 520 N
|
| Axial stiffness for preload D (sets of two brgs back-to-back or face-to-face) |
749 N/µm
|
| Correction factor dependent on bearing series and size | f |
1.17
|
|---|---|---|
| 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
|
| 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 |
2.13 kg
|
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