Four row tapered roller bearing OD:654.924mm/OD:655mmOD:673.1mm/OD:711.2mm/OD:690mm
| Designations | Boundary Dimensions | Basic Load Ratings | Mass(kg) | |||
| d | D | B | Cr | Cor | Refer. | |
| 3806/509X4HC | 509.948 | 654.924 | 377 | 5200 | 17500 | 312 | 
| NP907899/ NP385281 | 510 | 655 | 377 | 5500 | 16200 | 316 | 
| LM274449DGW/ 10/ 10D | 514.35 | 673. 1 | 422.275 | 7000 | 21000 | 408 | 
| LM275349D/ 10/ 10D | 520.7 | 711.2 | 400.05 | 8000 | 19500 | 476 | 
| 331978 BG | 540 | 690 | 400 | 6270 | 11400 | 375 | 
 
                



