315976 B
Double row cylindrical roller bearingDouble row cylindrical roller bearings are designed to accommodate high to very high radial loads in combination with medium to high speeds. The SKF assortment includes many designs and variants, such as standard and full complement bearings and also greased and sealed bearings. Depending on the configuration of the outer and inner rings, the bearings are available in locating as well as non-locating designs.
- High to very high radial load carrying capacity
- Low friction
- Long service life
Description
| Design variant/feature | NNU/C3W33 |
Dimensions
| d | 280 mm | Bore diameter |
|---|---|---|
| D | 470 mm | Outside diameter |
| B | 200 mm | Overall bearing width |
| D1 | ≈ 411 mm | Shoulder diameter outer ring |
| F | 329 mm | Raceway diameter inner ring |
| b | 13.9 mm | Width of annular groove |
| K | 7.5 mm | Diameter lubrication hole |
| r1,2 | min. 3 mm | Chamfer dimension outer ring |
| r3,4 | min. 5 mm | Chamfer dimension inner ring |
| s | max. 4.7 mm | Permissible axial displacement from the normal position of one bearing ring relative to the other |
Abutment dimensions
| da | min. 293 mm | Abutment diameter spacer sleeve |
|---|---|---|
| da | max. 323 mm | Abutment diameter spacer sleeve |
| db | min. 333 mm | Abutment diameter shaft |
| Da | max. 450 mm | Abutment diameter spacer sleeve / housing |
| ra | max. 2.5 mm | Fillet radius |
| rb | max. 4 mm | Fillet radius |
Calculation data
| Basic dynamic load rating | C | 2 700 kN |
|---|---|---|
| Basic static load rating | C0 | 5 100 kN |
| Fatigue load limit | Pu | 455 kN |
| Reference speed | 1 000 r/min | |
| Limiting speed | 1 500 r/min | |
| Calculation factor | kr | 0.36 |
Mass
| Mass bearing | 150 kg |
Tolerances and clearances
Bearing data
Bearing interfaces
