315018A bearings ( 100 mm x 225.008 mm x 120 mm) have the advantages of High rigidity, high load-bearing capacity and precision retention, and are therefore widely used in the Backing for multi-roll mills.

| Part Number | 315018A |
| Interchangeable | SKF 315018A |
| Cage | NO |
| Bearing Type | Backing bearings for cluster mills |
| Load | radial |
| Accuracy class | P4 (ABEC 7) |
| Coating | NO |
| Bearing part | Complete |
| Design | Without axial guidance |
| Internal clearance | NSTD |
| Row NO. | Three |
| Seal | Open |
| Number of holes | 12 |
| Units | Metric |
| Manufacturer Part Code | 315018 A |
| Series | 3150 series(3150..A) |
| Application | cluster mills |
| Relubrication feature | Yes |
| Weight [lb] | 63.0516 |
| Cr Radial Dynamic [lbf] | 148282 |
| C0r Radial Static [lbf] | 250927 |
| Pu Fatigue load limit [lbf] | 31567 |
| Fr max. Dynamic radial loads [lbf] | 124872 |
| F0r max. Static radial loads [lbf] | 179691 |
| d φ Inside [inch] | 3.9370 |
| D Φ Outside [inch] | 8.8586 |
| B Thickness [inch] | 4.7244 |
| C [inch] | 4.7244 |
| E [inch] | 6.155 |
| F [inch] | 4.736 |
| K [inch] | 0.1969 |
| r min. Chamfer [inch] | 0.043 |
| H(max.) Section height [inch] | 2.460 |
The 315018A Backed bearings primarily consist of an inner ring, an outer ring, single-row, double-row, or triple-row cylindrical rollers, and a cage. The outer ring is exceptionally thick, and the rollers and raceways feature a logarithmic profile design to optimize load distribution and reduce edge stress.
Backed bearings possess extremely high load-carrying capacity, capable of withstanding heavy loads and impact loads, while exhibiting low friction, minimal heat generation, and a long service life. The outer surface of the outer ring also utilizes a logarithmic profile, reducing edge loads during operation and improving operational reliability.















