Double row cylindrical roller bearings are designed to accommodate high to very high radial loads in combination with medium to high speeds. The AKMI 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.
| Design variant/feature | NNUB.3/C3WO |
| d | 530 mm | Bore diameter |
|---|---|---|
| D | 780 mm | Outside diameter |
| B | 475 mm | Overall bearing width |
| C | 285 mm | Width outer ring |
| D1 | ≈ 699 mm | Shoulder diameter outer ring |
| F | 590 mm | Raceway diameter inner ring |
| r1,2 | min. 5 mm | Chamfer dimension outer ring |
| r3,4 | min. 5 mm | Chamfer dimension inner ring |
| s | max. 100 mm | Permissible axial displacement from the normal position of one bearing ring relative to the other |
| da | min. 550 mm | Abutment diameter spacer sleeve |
|---|---|---|
| da | max. 582 mm | Abutment diameter spacer sleeve |
| db | min. 595 mm | Abutment diameter shaft |
| Da | max. 760 mm | Abutment diameter spacer sleeve / housing |
| ra | max. 4 mm | Fillet radius |
| rb | max. 4 mm | Fillet radius |
| Basic dynamic load rating | C | 7 210 kN |
|---|---|---|
| Basic static load rating | C0 | 17 300 kN |
| Fatigue load limit | Pu | 1 290 kN |
| Reference speed | 530 r/min | |
| Limiting speed | 800 r/min | |
| Calculation factor | kr | 0.4 |
General bearing specifications
Bearing interfaces
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