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 | NNU/W33 |
| d | 600 mm | Bore diameter |
|---|---|---|
| D | 980 mm | Outside diameter |
| B | 375 mm | Overall bearing width |
| D1 | ≈ 868 mm | Shoulder diameter outer ring |
| F | 699 mm | Raceway diameter inner ring |
| b | 22.3 mm | Width of annular groove |
| K | 12 mm | Diameter lubrication hole |
| r1,2 | min. 7.5 mm | Chamfer dimension outer ring |
| r3,4 | min. 7.5 mm | Chamfer dimension inner ring |
| s | max. 18.5 mm | Permissible axial displacement from the normal position of one bearing ring relative to the other |
| da | min. 634 mm | Abutment diameter spacer sleeve |
|---|---|---|
| da | max. 682 mm | Abutment diameter spacer sleeve |
| db | min. 706 mm | Abutment diameter shaft |
| Da | max. 946 mm | Abutment diameter spacer sleeve / housing |
| ra | max. 6 mm | Fillet radius |
| rb | max. 6 mm | Fillet radius |
| Basic dynamic load rating | C | 9 900 kN |
|---|---|---|
| Basic static load rating | C0 | 21 200 kN |
| Fatigue load limit | Pu | 1 460 kN |
| Reference speed | 480 r/min | |
| Limiting speed | 630 r/min | |
| Calculation factor | kr | 0.33 |
General bearing specifications
Bearing interfaces
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