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. This bearing design offers excellent performance in many types of vibrating machinery. 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 |
Tapered 1:12
|
| d |
70 mm
|
Bore diameter |
|---|---|---|
| D |
150 mm
|
Outside diameter |
| B |
51 mm
|
Width |
| d2 |
≈ 90.3 mm
|
Shoulder diameter of inner ring |
| D1 |
≈ 128 mm
|
Shoulder/recess diameter of outer ring |
| b |
8.3 mm
|
Width of lubrication groove |
| K |
4.5 mm
|
Diameter of lubrication hole |
| r1,2 |
min. 2.1 mm
|
Chamfer dimension |
| Da |
max. 138 mm
|
Diameter of housing abutment |
|---|---|---|
| ra |
max. 2 mm
|
Radius of fillet |
| Basic dynamic load rating | C |
413 kN
|
|---|---|---|
| Basic static load rating | C0 |
430 kN
|
| Fatigue load limit | Pu |
45 kN
|
| Reference speed |
3 400 r/min
|
|
| Limiting speed |
4 500 r/min
|
|
| Limiting value | e |
0.33
|
| Calculation factor | Y1 |
2
|
| Calculation factor | Y2 |
3
|
| Calculation factor | Y0 |
2
|
| Permissible rotational acceleration for oil lubrication |
598 m/s²
|
|
| Permissible linear acceleration for oil lubrication |
226 m/s²
|
| Mass |
4.45 kg
|
| Recommended tightening angle for lock nut | α |
130 °
|
|---|
| Dimensional tolerances |
Normal, bore to P5 and outside diameter P6
|
| Radial run-out |
Normal
|
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