Description
| Design variant/feature | NNU/W33 |
Dimensions
| d | 440 mm | Bore diameter |
|---|---|---|
| D | 540 mm | Outside diameter |
| B | 100 mm | Overall bearing width |
| D1 | ≈ 505 mm | Shoulder diameter outer ring |
| F | 470 mm | Raceway diameter inner ring |
| b | 16.7 mm | Width of annular groove |
| K | 9 mm | Diameter lubrication hole |
| r1,2 | min. 2.1 mm | Chamfer dimension outer ring |
| r3,4 | min. 2.1 mm | Chamfer dimension inner ring |
| s | max. 3.5 mm | Permissible axial displacement from the normal position of one bearing ring relative to the other |
Abutment dimensions
| da | min. 448 mm | Abutment diameter spacer sleeve |
|---|---|---|
| da | max. 464 mm | Abutment diameter spacer sleeve |
| db | min. 476 mm | Abutment diameter shaft |
| Da | max. 529 mm | Abutment diameter spacer sleeve / housing |
| ra | max. 1.5 mm | Fillet radius |
| rb | max. 2 mm | Fillet radius |
Calculation data
| Basic dynamic load rating | C | 1 170 kN |
|---|---|---|
| Basic static load rating | C0 | 3 400 kN |
| Fatigue load limit | Pu | 216 kN |
| Reference speed | 1 000 r/min | |
| Limiting speed | 1 100 r/min | |
| Calculation factor | kr | 0.12 |
Tolerances and clearances
General bearing specifications
- Tolerances: Normal, P6, P5
- Radial internal clearance: cylindrical bore, tapered bore
Bearing interfaces
- Seat tolerances for standard conditions
- Tolerances and resultant fit
Double row cylindrical roller bearings are designed to accommodate high to very high radial loads in combination with medium to high speeds. The NR 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
