NA 4903 RS
Single row needle roller bearing with machined rings, with flanges and integral sealing
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. The inner ring contains an additional lubrication hole.
- High radial load carrying capacity
- High stiffness and low cross-sectional height
- Accommodate axial displacement in both directions
- Separable design
- Integral sealing prolongs bearing service life
Dimensions
| d |
17 mm
|
Bore diameter |
| D |
30 mm
|
Outside diameter |
| B |
14 mm
|
Width |
| C |
13 mm
|
Width outer ring |
| F |
22 mm
|
Raceway diameter inner ring |
| r1,2 |
min.0.3 mm
|
Chamfer dimension outer ring |
| s |
max.0.5 mm
|
Permissible axial displacement from the normal position of one bearing ring relative to the other |
Abutment dimensions
| da |
min.19 mm
|
Smallest permissible abutment diameter shaft, bearings with flanges |
| Da |
max.28 mm
|
Diameter of housing abutment |
| ra |
max.0.3 mm
|
Fillet radius |
Calculation data
| Basic dynamic load rating |
C |
9.52 kN
|
| Basic static load rating |
C0 |
12.9 kN
|
| Fatigue load limit |
Pu |
1.53 kN
|
| Limiting speed |
|
9 000 r/min
|
