NX 12 Z
Combined needle roller / thrust ball bearing (full complement thrust part) with a cover
These bearings consist of a radial needle roller bearing combined with a full complement thrust ball bearing.
Together they can accommodate both moderate radial loads and lighter axial loads in one direction. 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
- Low cross section
- Non-separable design
Dimensions
| Fw |
12 mm
|
Diameter under rollers |
| D |
21 mm
|
Outside diameter |
| C |
18 mm
|
Width |
| C2 |
4.7 mm
|
Distance side face to lubrication hole |
| d |
12 mm
|
Bore diameter of thrust part |
| r1,2 |
min.0.3 mm
|
Chamfer dimension |
Abutment dimensions
| da |
min.16.6 mm
|
Diameter of shaft abutment |
| Da |
max.19 mm
|
Diameter of housing abutment |
| Ca |
10 mm
|
Distance side face to back face of snap ring |
| ra |
max.0.3 mm
|
Radius of fillet |
| di |
8 mm
|
Bore diameter of associated inner ring |
| F |
12 mm
|
Diameter of inner ring raceway |
| Bi |
10 mm
|
Width of associated inner ring |
Calculation data
| Basic dynamic load rating, radial |
C |
5.39 kN
|
| Basic static load rating, radial |
C0 |
5.2 kN
|
| Basic dynamic load rating, axial |
C |
5.27 kN
|
| Basic static load rating, axial |
C0 |
9.65 kN
|
| Fatigue load limit, radial |
Pu |
0.61 kN
|
| Fatigue load limit, axial |
Pu |
0.355 kN
|
| Minimum axial load factor |
A |
4.8E-4
|
| Reference speed |
|
8 000 r/min
|
| Limiting speed |
|
5 300 r/min
|
Associated products
| Inner ring |
|
| Snap ring |
SW 21
|
