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.1/W33WI |
| d | 370 mm | Bore diameter |
|---|---|---|
| D | 520 mm | Outside diameter |
| B | 193 mm | Overall bearing width |
| C | 169 mm | Width outer ring |
| D1 | ≈ 468 mm | Shoulder diameter outer ring |
| F | 409 mm | Raceway diameter inner ring |
| b | 16.7 mm | Width of annular groove |
| K | 6 mm | Diameter lubrication hole |
| r1,2 | min. 2 mm | Chamfer dimension outer ring |
| r3,4 | min. 10.8 mm | Chamfer dimension inner ring |
| α | 20 ° | Chamfer angle inner ring |
| s | max. 16.7 mm | Permissible axial displacement from the normal position of one bearing ring relative to the other |
| da | min. 390 mm | Abutment diameter spacer sleeve |
|---|---|---|
| da | max. 404 mm | Abutment diameter spacer sleeve |
| db | min. 414 mm | Abutment diameter shaft |
| Da | max. 512 mm | Abutment diameter spacer sleeve / housing |
| ra | max. 1.5 mm | Fillet radius |
| rb | max. 1.5 mm | Fillet radius |
| Basic dynamic load rating | C | 2 750 kN |
|---|---|---|
| Basic static load rating | C0 | 6 700 kN |
| Fatigue load limit | Pu | 570 kN |
| Reference speed | 850 r/min | |
| Limiting speed | 1 300 r/min | |
| Calculation factor | kr | 0.34 |
General bearing specifications
Bearing interfaces
Can't find the information you're looking for? Please fill out the application form and we will reply to you as soon as possible.
Your local AKMI dealer can provide you with technical support and sales assistance.
AKMI online customer service, timely answer customer questions
(Monday to Friday 9:00-18:00)
