Four-point contact ball bearings with locating slots can accommodate high axial loads in both directions and small radial loads. They can operate at very high speeds and are more suitable than deep groove ball bearings for supporting large axial forces. The outer ring, with ball and cage assembly, can be mounted separately from the two inner ring halves. The locating slots can be used to prevent the outer ring from rotating.
| SKF performance class |
SKF Explorer
|
| d |
70 mm
|
Bore diameter |
|---|---|---|
| D |
150 mm
|
Outside diameter |
| B |
35 mm
|
Width |
| d1 |
≈ 89 mm
|
Shoulder diameter inner ring |
| D1 |
≈ 123 mm
|
Shoulder diameter outer ring/ inner diameter housing washer |
| a |
77 mm
|
Distance pressure point(s) |
| h |
10.1 mm
|
Locating slot depth outer ring |
| b |
8.5 mm
|
Locating slot width outer ring |
| r0 |
2 mm
|
Corner radius locating slot |
| r1,2 |
min. 2.1 mm
|
Chamfer dimension inner ring |
| da |
min. 82 mm
|
Abutment diameter shaft |
|---|---|---|
| Da |
max. 138 mm
|
Abutment diameter housing |
| ra |
max. 2 mm
|
Fillet radius |
| Basic dynamic load rating | C |
200 kN
|
|---|---|---|
| Basic static load rating | C0 |
180 kN
|
| Fatigue load limit | Pu |
7.35 kN
|
| Limiting speed |
8 000 r/min
|
|
| Calculation factor | A |
0.0954
|
| Limiting value | e |
0.95
|
| Calculation factor | X |
0.6
|
| Calculation factor | Y0 |
0.58
|
| Calculation factor | Y1 |
0.66
|
| Calculation factor | Y2 |
1.07
|
| Mass bearing |
3.15 kg
|
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