BNTB326074B/HB1 Bore 180 Mm, Backing Bearings For Cluster Mills
The BNTB326074B/HB1 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 BNTB326074B/HB1 bearing is a Backing bearings for cluster mills with an inner diameter of 180 mm , an outer diameter of 406.4 mm, a width of 224 mm. It typically uses P4 (ABEC 7) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic radial rated load is approximately 1755575 N, its static radial rated load is approximately 2897781 N. Seal on both sides type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
BNTB326074B/HB1 bearings ( 180 mm x 406.4 mm x 224 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 | BNTB326074B/HB1 |
| Interchangeable | SKF BNTB326074B/HB1 |
| Cage | NO |
| Bearing Type | Backing bearings for cluster mills |
| Load | radial |
| Accuracy class | P4 (ABEC 7) |
| Coating | NO |
| Bearing part | Complete |
| Row NO. | Four |
| Seal | Seal on both sides |
| Units | Metric |
| Manufacturer Part Code | BNTB 326074 B/HB1 |
| Series | BNTB series(BNTB 3260.. B/HB1) |
| Application | cluster mills |
| Relubrication feature | Yes |
| Weight [lb] | 374.7820 |
| Cr Radial Dynamic [lbf] | 394653 |
| C0r Radial Static [lbf] | 651421 |
| Fr max. Dynamic radial loads [lbf] | 289584 |
| F0r max. Static radial loads [lbf] | 417532 |
| d φ Inside [inch] | 7.0866 |
| D Φ Outside [inch] | 16.0000 |
| B Thickness [inch] | 8.8189 |
| C [inch] | 8.7795 |
| H(max.) Section height [inch] | 4.457 |
The BNTB326074B/HB1 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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