305256 D
Double row angular contact ball bearing with two-piece inner ring and relubrication feature
Double row angular contact ball bearing, with two-piece inner ring and relubrication feature, correspond to a pair of single row angular contact ball bearings in a back-to-back arrangement.
The two-piece inner ring enables incorporation of more balls, resulting in higher load carrying capacity. The annular lubrication groove and holes in the outer ring facilitates relubrication.
- Accommodate very high axial loads in both directions, radial loads, and tilting moments
- Relubrication feature
- Suitable where a stiff bearing arrangement is required
- Require less axial space than equivalent pair of single row angular contact ball bearings
Dimensions
| d |
120 mm
|
Bore diameter |
| D |
190 mm
|
Outside diameter |
| B |
66 mm
|
Width |
| d1 |
≈145.1 mm
|
Shoulder diameter inner ring for two-piece inner ring |
| D1 |
≈172.1 mm
|
Shoulder diameter outer ring |
| b |
8.3 mm
|
Width annular lubrication groove at outer ring |
| K |
4.5 mm
|
Diameter lubrication hole (outer ring) |
| r1,2 |
min.2 mm
|
Chamfer dimension inner ring for two-piece inner ring |
| a |
130 mm
|
Distance pressure point(s) |
Calculation data
| Basic dynamic load rating |
C |
182 kN
|
| Basic static load rating |
C0 |
232 kN
|
| Fatigue load limit |
Pu |
8 kN
|
| Reference speed |
|
3 400 r/min
|
| Limiting speed |
|
3 600 r/min
|
| Calculation factor |
kr |
0.095
|
| Limiting value |
e |
0.86
|
| Calculation factor |
X |
0.62
|
| Calculation factor |
Y0 |
0.63
|
| Calculation factor |
Y1 |
0.73
|
| Calculation factor |
Y2 |
1.17
|
