NAO 50X68X20
Single row needle roller bearing with machined rings, without flanges
Single row needle roller bearings incorporate cylindrical rollers that are small in diameter relative to their length.
Owing to their large number of rollers, the bearings have a high load carrying capacity. Bearings without flanges on the outer ring are separable, i.e. the outer ring and the needle roller and cage assembly can be mounted separately.
- High radial load carrying capacity
- High stiffness
- Low cross-sectional height
- Accommodate axial displacement in both directions
- Separable design
Dimensions
| d |
50 mm
|
Bore diameter |
| D |
68 mm
|
Outside diameter |
| B |
20 mm
|
Width |
| E |
60 mm
|
Raceway diameter outer ring |
| F |
55 mm
|
Raceway diameter inner ring |
| r1,2 |
min.0.6 mm
|
Chamfer dimension outer ring |
| s |
max.1 mm
|
Permissible axial displacement from the normal position of one bearing ring relative to the other |
Abutment dimensions
| da |
59.2 mm
|
Smallest permissible abutment diameter shaft, bearings without flanges |
| db |
54.5 mm
|
Smallest permissible abutment diameter shaft, bearings without flanges |
| Da |
60.8 mm
|
Diameter of housing abutment |
| Db |
55.8 mm
|
Smallest permissible abutment diameter housing, bearings without flanges |
| ra |
max.0.6 mm
|
Fillet radius |
Calculation data
| Basic dynamic load rating |
C |
27 kN
|
| Basic static load rating |
C0 |
67 kN
|
| Fatigue load limit |
Pu |
8.15 kN
|
| Reference speed |
|
7 500 r/min
|
| Limiting speed |
|
8 500 r/min
|
