Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Cylindrical roller bearings | |
| Bore diameter | d | 340 mm |
| Outside diameter | D | 520 mm |
| Width | B | 305 mm |
| Basic dynamic load rating | C | 3300 kN |
| Basic static load rating | C0 | 7100 kN |
| Fatigue load limit | Pu | 610 kN |
| Reference speed | nref | 900 r/min |
| Limiting speed | nG | 1300 r/min |
| Mass | ≈m | 185 kg |
| Internal clearance | C3 | |
| Sealing | Without | |
| Lubricant | None |
Dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 340.0 mm | |
| Outside diameter | 520.0 mm | |
| Width | 305.0 mm |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Cylindrical roller bearings | |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/cylindrical-roller-bearings/double-row-cylindrical-roller-bearings | |
| Structure group ID | BC2_001 | |
| Available from SKF | Yes | |
| Remanufacturable | Yes |
Engineering — Abutment dimensions6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Abutment diameter spacer sleeve | d a | min. 360 mm |
| Abutment diameter spacer sleeve | d a | max. 374 mm |
| Abutment diameter shaft | d b | min. 388 mm |
| Abutment diameter spacer sleeve / housing | D a | max. 500 mm |
| Fillet radius | r a | max. 4 mm |
| Fillet radius | r b | max. 4 mm |
Engineering — Calculation data6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | C | 3300 kN |
| Basic static load rating | C 0 | 7100 kN |
| Fatigue load limit | P u | 610 kN |
| Reference speed | 900 r/min | |
| Limiting speed | 1300 r/min | |
| Calculation factor | k r | 0.38 |
Engineering — Dimensions9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 340 mm |
| Outside diameter | D | 520 mm |
| Overall bearing width | B | 305 mm |
| Width outer ring | C | 200 mm |
| Shoulder diameter outer ring | D 1 | ≈ 461 mm |
| Raceway diameter inner ring | F | 384 mm |
| Chamfer dimension outer ring | r 1,2 | min. 5 mm |
| Chamfer dimension inner ring | r 3,4 | min. 5 mm |
| Permissible axial displacement from the normal position of one bearing ring relative to the other | s | max. 45 mm |
Engineering — Engineering specifications1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Design variant/feature | NNUB.2/C3WO |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 185.0 kg | |
| eClass code | 23-05-09-01 | |
| UNSPSC code | 31171505 |
Performance4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 3300.0 kN | |
| Basic static load rating | 7100.0 kN | |
| Reference speed | 900.0 r/min | |
| Limiting speed | 1300.0 r/min |
Properties18 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bearing part | Complete bearing | |
| Axial displacement capability | In both directions | |
| Number of rows | 2 | |
| Locating feature, bearing outer ring | Without | |
| Bore type | Cylindrical | |
| Inner ring extension | On both sides | |
| Number of flanges, outer ring | 3 | |
| Number of flanges, inner ring | 0 | |
| Loose flange | None | |
| Radial internal clearance | C3 | |
| Tolerance class | Normal | |
| Coating | Without | |
| Sealing | Without | |
| Lubricant | None | |
| Relubrication feature | Without | |
| Candidate for remanufacturing | Yes | |
| Indicative carbon footprint for new product | 685.0 kg CO 2 e | |
| Indicative carbon footprint for remanufactured product | 228.0 kg CO 2 e |