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.
| d |
220 mm
|
Bore diameter |
|---|---|---|
| D |
309.5 mm
|
Outside diameter |
| B |
76 mm
|
Width |
| d1 |
≈ 252.5 mm
|
Shoulder diameter inner ring for two-piece inner ring |
| D1 |
≈ 286 mm
|
Shoulder diameter outer ring |
| b |
13.9 mm
|
Width annular lubrication groove at outer ring |
| K |
7.5 mm
|
Diameter lubrication hole (outer ring) |
| r1,2 |
min. 2.1 mm
|
Chamfer dimension inner ring for two-piece inner ring |
| a |
204 mm
|
Distance pressure point(s) |
| da |
min. 225 mm
|
Abutment diameter shaft |
|---|---|---|
| Da |
max. 284 mm
|
Abutment diameter housing |
| ra |
max. 2.1 mm
|
Fillet radius |
| Basic dynamic load rating | C |
312 kN
|
|---|---|---|
| Basic static load rating | C0 |
520 kN
|
| Fatigue load limit | Pu |
13.4 kN
|
| Reference speed |
2 000 r/min
|
|
| Limiting speed |
2 000 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
|
| Mass bearing |
17.7 kg
|
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