NA 4838
Single row needle roller bearing with machined rings, with 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. The outer ring includes two integral flanges to guide the bearing axially and an annular groove with one or more lubrication holes to facilitate relubrication.
- High radial load carrying capacity
- High stiffness
- Low cross-sectional height
- Accommodate axial displacement in both directions
- Separable design
Dimensions
| d |
190 mm
|
Bore diameter |
| D |
240 mm
|
Outside diameter |
| B |
50 mm
|
Width |
| F |
210 mm
|
Raceway diameter inner ring |
| r1,2 |
min.1.5 mm
|
Chamfer dimension outer ring |
| s |
max.1.5 mm
|
Permissible axial displacement from the normal position of one bearing ring relative to the other |
Abutment dimensions
| da |
min.198 mm
|
Smallest permissible abutment diameter shaft, bearings with flanges |
| Da |
max.232 mm
|
Diameter of housing abutment |
| ra |
max.1.5 mm
|
Fillet radius |
Calculation data
| Basic dynamic load rating |
C |
220 kN
|
| Basic static load rating |
C0 |
710 kN
|
| Fatigue load limit |
Pu |
73.5 kN
|
| Reference speed |
|
1 900 r/min
|
| Limiting speed |
|
2 200 r/min
|
