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 |
150 mm
|
Bore diameter |
|---|---|---|
| D |
270 mm
|
Outside diameter |
| B |
45 mm
|
Width |
| d1 |
≈ 194 mm
|
Shoulder diameter inner ring |
| D1 |
≈ 226 mm
|
Shoulder diameter outer ring/ inner diameter housing washer |
| a |
147 mm
|
Distance pressure point(s) |
| h |
11.7 mm
|
Locating slot depth outer ring |
| b |
10.5 mm
|
Locating slot width outer ring |
| r0 |
2 mm
|
Corner radius locating slot |
| r1,2 |
min. 3 mm
|
Chamfer dimension inner ring |
| da |
min. 164 mm
|
Abutment diameter shaft |
|---|---|---|
| Da |
max. 256 mm
|
Abutment diameter housing |
| ra |
max. 2.5 mm
|
Fillet radius |
| Basic dynamic load rating | C |
400 kN
|
|---|---|---|
| Basic static load rating | C0 |
570 kN
|
| Fatigue load limit | Pu |
16.6 kN
|
| Limiting speed |
4 000 r/min
|
|
| Calculation factor | A |
0.793
|
| 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 |
12.5 kg
|
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