FC3044127 bearings ( 150 mm x 220 mm x 127 mm) have the advantages of Extremely high radial load capacity, high rigidity, separable design, and are therefore widely used in the metallurgical rolling mills, large gearboxes, and heavy-duty extrusion presses.

| Part Number | FC3044127 |
| Interchangeable | China FC3044127 |
| Cage | machined brass solid cages |
| Radial internal clearance | C3 |
| Seal | Open |
| Bearing Type | Four-row cylindrical roller bearing for cold rolling mill, hot rolling mill, billet mill |
| Equivalent | FC3044127 (China) 4R3036 (NTN) |
| Design type | FC |
| Bearing Weight [lb] | 34.612 |
| Inner ring Weight [lb] | 8.598 |
| d φ Inside [inch] | 5.905 |
| D Φ Outside [inch] | 8.661 |
| B Width [inch] | 5.000 |
| F Raceway diameter inner ring [inch] | 6.614 |
| C [inch] | 5.000 |
| r1,2 min Chamfer inner ring | 2.5 mm |
| r3,4 min Chamfer outer ring | 2.5 mm |
| Cr Radial Dynamic [lbf] | 138252 |
| C0r Radial Static [lbf] | 287744 |
| nB Speed ratings (grease) [rpm] | 2000 |
| nG Speed ratings (oil) [rpm] | 2600 |
The FC3044127 Four-row cylindrical roller bearings mainly consist of an inner ring, an outer ring, four rows of cylindrical rollers, a cage, and a spacer. Common structures use a configuration of double outer rings (each with double raceways) and a single inner ring (with four raceways), or an interchangeable combination of inner and outer rings. Axial positioning and load distribution are achieved through the spacer.
The advantages of four-row cylindrical roller bearings are their extremely high radial load capacity, high rigidity, and the line contact between the rollers and raceways, resulting in a low coefficient of friction and allowing for high-speed operation under heavy loads. They can also be used as floating end bearings, capable of withstanding axial displacement caused by thermal expansion, and are easy to install and maintain.















