21312 EK
Spherical roller bearing with tapered bore and relubrication features
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.
- Accommodate misalignment
- High load carrying capacity
- Relubrication features
- Low friction and long service life
- Increased wear resistance
Dimensions
| d |
60 mm
|
Bore diameter |
| D |
130 mm
|
Outside diameter |
| B |
31 mm
|
Width |
| d2 |
≈87.8 mm
|
Shoulder diameter of inner ring |
| D1 |
≈115 mm
|
Shoulder/recess diameter of outer ring |
| b |
6 mm
|
Width of lubrication groove |
| K |
3 mm
|
Diameter of lubrication hole |
| r1,2 |
min.2.1 mm
|
Chamfer dimension |
Abutment dimensions
| Da |
max.118 mm
|
Diameter of housing abutment |
| ra |
max.2 mm
|
Radius of fillet |
Calculation data
| SKF performance class |
|
SKF Explorer
|
| Basic dynamic load rating |
C |
217 kN
|
| Basic static load rating |
C0 |
240 kN
|
| Fatigue load limit |
Pu |
26.5 kN
|
| Reference speed |
|
4 800 r/min
|
| Limiting speed |
|
6 300 r/min
|
| Limiting value |
e |
0.22
|
| Calculation factor |
Y1 |
3
|
| Calculation factor |
Y2 |
4.6
|
| Calculation factor |
Y0 |
2.8
|
Mounting information
| Recommended tightening angle for lock nut |
α |
115 °
|
Tolerance class
| Dimensional tolerances |
Normal
|
| Radial run-out |
P5
|
