NCF 2948 CV
Single row full complement cylindrical roller bearing, NCF design
Single row full complement cylindrical roller bearings are designed to accommodate very high radial loads in combination with moderate speeds.
The bearings incorporate a maximum number of rollers as they are not equipped with a cage. Having two integral flanges on the inner ring and one flange on the outer ring, NCF design bearings can accommodate axial displacement in one direction. A retaining ring on the outer ring holds the bearing together. The retaining ring should not be loaded axially during operation.
- Very high radial load carrying capacity
- High radial stiffness
- Long service life
- Locate the shaft axially in one direction
Dimensions
| d |
240 mm
|
Bore diameter |
| D |
320 mm
|
Outside diameter |
| B |
48 mm
|
Width |
| d1 |
≈267 mm
|
Shoulder diameter inner ring |
| D1 |
≈294 mm
|
Shoulder diameter outer ring |
| E |
303 mm
|
Raceway diameter outer ring |
| s |
max.3 mm
|
Permissible axial displacement from the normal position of one bearing ring relative to the other |
| r1,2 |
min.2.1 mm
|
Chamfer dimension |
| r3,4 |
min.1.5 mm
|
Chamfer dimension |
Abutment dimensions
| da |
min.251 mm
|
Abutment diameter shaft |
| das |
263 mm
|
Abutment diameter shaft |
| Da |
max.309 mm
|
Abutment diameter housing |
| Db |
max.311 mm
|
Abutment diameter housing |
| ra |
max.2 mm
|
Fillet radius |
| rb |
max.1.5 mm
|
Fillet radius |
Calculation data
| Basic dynamic load rating |
C |
583 kN
|
| Basic static load rating |
C0 |
1 140 kN
|
| Fatigue load limit |
Pu |
114 kN
|
| Reference speed |
|
850 r/min
|
| Limiting speed |
|
1 100 r/min
|
| Calculation factor |
kr |
0.2
|
| Limiting value |
e |
0.3
|
| Calculation factor |
Y |
0.4
|
