315268B Bore 70 Mm, Backing Bearings For Cluster Mills
The 315268B Backed bearings are suitable for heavy-duty rolling equipment such as multi-roll cold rolling mills. Classic applications include backing rolls in multi-roll mills, straighteners, bending machines, support rolls in Sendzimir mills, and work roll support systems in strip mills.
The 315268B bearing is a Backing bearings for cluster mills with an inner diameter of 70 mm , an outer diameter of 160 mm, a width of 90 mm. It typically uses P4 (ABEC 7) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic radial rated load is approximately 356621 N, its static radial rated load is approximately 584218 N. It uses NSTD standard radial clearance, Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
315268B bearings ( 70 mm x 160 mm x 90 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 | 315268B |
| Interchangeable | SKF 315268B |
| 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 | 4 |
| Units | Metric |
| Manufacturer Part Code | 315268 B |
| Series | 3152 series(3152..B) |
| Application | cluster mills |
| Relubrication feature | Yes |
| Weight [lb] | 23.5892 |
| Cr Radial Dynamic [lbf] | 80168 |
| C0r Radial Static [lbf] | 131332 |
| Pu Fatigue load limit [lbf] | 17714 |
| Fr max. Dynamic radial loads [lbf] | 70145 |
| F0r max. Static radial loads [lbf] | 101374 |
| d φ Inside [inch] | 2.7559 |
| D Φ Outside [inch] | 6.2992 |
| B Thickness [inch] | 3.5433 |
| C [inch] | 3.5433 |
| E [inch] | 4.285 |
| F [inch] | 3.260 |
| K [inch] | 0.1969 |
| r min. Chamfer [inch] | 0.039 |
| H(max.) Section height [inch] | 1.771 |
The 315268B 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.
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