Spherical roller bearings can accommodate heavy loads in both directions. They are self-aligning and accommodate misalignment and shaft deflections, with virtually no increase in friction or temperature. The design includes features to facilitate relubrication. The bearings can be used in a modular system, including housings, sleeves and nuts.
| SKF performance class |
SKF Explorer
|
| Bore type |
Cylindrical
|
| d |
180 mm
|
Bore diameter |
|---|---|---|
| D |
250 mm
|
Outside diameter |
| B |
52 mm
|
Width |
| d2 |
≈ 199 mm
|
Shoulder diameter of inner ring |
| D1 |
≈ 231 mm
|
Shoulder/recess diameter of outer ring |
| b |
6 mm
|
Width of lubrication groove |
| K |
3 mm
|
Diameter of lubrication hole |
| r1,2 |
min. 2 mm
|
Chamfer dimension |
| da |
min. 189 mm
|
Diameter of shaft abutment |
|---|---|---|
| Da |
max. 241 mm
|
Diameter of housing abutment |
| ra |
max. 2 mm
|
Radius of fillet |
| Basic dynamic load rating | C |
519 kN
|
|---|---|---|
| Basic static load rating | C0 |
830 kN
|
| Fatigue load limit | Pu |
76.5 kN
|
| Reference speed |
2 600 r/min
|
|
| Limiting speed |
2 800 r/min
|
|
| Limiting value | e |
0.18
|
| Calculation factor | Y1 |
3.8
|
| Calculation factor | Y2 |
5.6
|
| Calculation factor | Y0 |
3.6
|
| Mass |
7.8 kg
|
| Dimensional tolerances |
Normal
|
| Radial run-out |
P5
|
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