FCD100134450 bearings ( 500 mm x 670 mm x 450 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 | FCD100134450 |
| Old Code | 6728/500Y |
| Interchangeable | ZWZ FCD100134450 |
| 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 |
| Design type | FCD = double outer rings, double inner rings, no ribs on inner rings |
| Bearing Weight [lb] | 1014.116 |
| d φ Inside [inch] | 19.685 |
| D Φ Outside [inch] | 26.378 |
| B Width [inch] | 17.716 |
| Fw Raceway diameter inner ring [inch] | 21.260 |
| C [inch] | 17.716 |
| D1 [inch] | 24.291 |
| b(max) [inch] | 0.591 |
| k(max) [inch] | 0.315 |
| r min Chamfer inner ring | 6 mm |
| r1 min Chamfer outer ring | 6 mm |
| Cr Radial Dynamic [lbf] | 1942272 |
| C0r Radial Static [lbf] | 5327760 |
The FCD100134450 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.















