527181 bearings ( 412.335 mm x 650 mm x 488 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 | 527181 |
| Interchangeable | FAG 527181 |
| Desgin Figure | 1 |
| Cage | machined brass cages |
| Seal | Open |
| Bearing Type | Cylindrical Roller Bearings, four row |
| Other | with circumferential lubricating groove and lubricating holes in outer rings; without lubricating grooves in outer ring faces |
| Bearing Weight [lb] | 1269.850 |
| d φ Inside [inch] | 16.234 |
| D Φ Outside [inch] | 25.591 |
| B Width [inch] | 19.213 |
| F Raceway diameter inner ring [inch] | 19.468 |
| d1 [inch] | 17.835 |
| rs min Chamfer inner rings | 1.5 mm |
| r1s min Chamfer outer rings | 4 mm |
| Cr Radial Dynamic [lbf] | 2203040 |
| C0r Radial Static [lbf] | 4271200 |
The 527181 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.















