NKX 30 Z
Combined needle roller / thrust ball bearing with a cover
These bearings consist of a radial needle roller bearing combined with a thrust ball bearing.
Together they can accommodate both radial loads and axial loads in one direction. In addition, they can operate at relatively high speeds. Their low cross-sectional height makes the bearings particularly suitable for applications where other types of locating bearing arrangements occupy too much space. The thrust part is capped with a cover that forms a gap-type seal to retain the grease in the bearings.
- Accommodate radial and axial loads in one direction
- High load carrying capacity
- Relatively high-speed capability
- Low cross section
- Non-separable design
Dimensions
| Fw |
30 mm
|
Diameter under rollers |
| D |
42 mm
|
Outside diameter |
| C |
30 mm
|
Width |
| C1 |
11 mm
|
Width of thrust part |
| C2 |
9.5 mm
|
Distance side face to lubrication hole |
| d |
30 mm
|
Bore diameter of thrust part |
| D2 |
48.2 mm
|
Diameter of stamped steel cover |
| r1,2 |
min.0.6 mm
|
Chamfer dimension |
Abutment dimensions
| da |
min.42.7 mm
|
Diameter of shaft abutment |
| ra |
max.0.6 mm
|
Radius of fillet |
| rb |
max.0.3 mm
|
Radius of fillet |
| di |
25 mm
|
Bore diameter of associated inner ring |
| F |
30 mm
|
Diameter of inner ring raceway |
| Bi |
20 mm
|
Width of associated inner ring |
Calculation data
| Basic dynamic load rating, radial |
C |
22.9 kN
|
| Basic static load rating, radial |
C0 |
38 kN
|
| Basic dynamic load rating, axial |
C |
20.3 kN
|
| Basic static load rating, axial |
C0 |
45.5 kN
|
| Fatigue load limit, radial |
Pu |
4.8 kN
|
| Fatigue load limit, axial |
Pu |
1.7 kN
|
| Minimum axial load factor |
A |
0.01
|
| Reference speed |
|
6 000 r/min
|
| Limiting speed |
|
5 000 r/min
|
