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 |
Cylindrical
|
| d |
140 mm
|
Bore diameter |
|---|---|---|
| D |
300 mm
|
Outside diameter |
| B |
102 mm
|
Width |
| d2 |
≈ 175 mm
|
Shoulder diameter of inner ring |
| D1 |
≈ 247 mm
|
Shoulder/recess diameter of outer ring |
| b |
16.7 mm
|
Width of lubrication groove |
| K |
9 mm
|
Diameter of lubrication hole |
| r1,2 |
min. 4 mm
|
Chamfer dimension |
| da |
min. 157 mm
|
Diameter of shaft abutment |
|---|---|---|
| Da |
max. 283 mm
|
Diameter of housing abutment |
| ra |
max. 3 mm
|
Radius of fillet |
| Basic dynamic load rating | C |
1 357 kN
|
|---|---|---|
| Basic static load rating | C0 |
1 560 kN
|
| Fatigue load limit | Pu |
132 kN
|
| Reference speed |
1 700 r/min
|
|
| Limiting speed |
2 200 r/min
|
|
| Limiting value | e |
0.35
|
| Calculation factor | Y1 |
1.9
|
| Calculation factor | Y2 |
2.9
|
| Calculation factor | Y0 |
1.8
|
| Permissible rotational acceleration for oil lubrication |
765 m/s²
|
|
| Permissible linear acceleration for oil lubrication |
196 m/s²
|
| Mass |
36.5 kg
|
| Dimensional tolerances |
Normal, bore to P5 and outside diameter P6
|
| Radial run-out |
Normal
|
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