NU 2238 ECM
Single row cylindrical roller bearing, NU design
Single row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds.
Having two integral flanges on the outer ring and no flanges on the inner ring, NU design bearings can accommodate axial displacement in both directions. An important feature is the separable design, which facilitates mounting and enables the bearing components to be interchanged.
- High radial load carrying capacity
- Low friction
- Long service life
- Accommodate axial displacement in both directions
- Separable design
Dimensions
| d |
190 mm
|
Bore diameter |
| D |
340 mm
|
Outside diameter |
| B |
92 mm
|
Width |
| D1 |
≈295.2 mm
|
Shoulder diameter of outer ring |
| F |
228 mm
|
Raceway diameter of inner ring |
| r1,2 |
min.4 mm
|
Chamfer dimension |
| r3,4 |
min.4 mm
|
Chamfer dimension |
| s |
max.5 mm
|
Permissible axial displacement |
Abutment dimensions
| da |
min.207 mm
|
Diameter of spacer sleeve |
| da |
max.224 mm
|
Diameter of spacer sleeve |
| db |
min.231 mm
|
Diameter of shaft abutment |
| Da |
max.321.9 mm
|
Diameter of housing abutment |
| ra |
max.3 mm
|
Radius of fillet |
| rb |
max.3 mm
|
Radius of fillet |
Calculation data
| SKF performance class |
|
SKF Explorer
|
| Basic dynamic load rating |
C |
1 220 kN
|
| Basic static load rating |
C0 |
1 600 kN
|
| Fatigue load limit |
Pu |
160 kN
|
| Reference speed |
|
2 000 r/min
|
| Limiting speed |
|
2 200 r/min
|
| Minimum load factor |
kr |
0.2
|
| Limiting value |
e |
0.3
|
| Calculation factor |
Y |
0.4
|
