BCZ-8004 Bore 205 Mm, Backing Bearings For Cluster Mills
The BCZ-8004 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 BCZ-8004 bearing is a Backing bearings for cluster mills with an inner diameter of 205 mm , an outer diameter of 520 mm, a width of 168 mm. It typically uses P4 (ABEC 7) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic radial rated load is approximately 2089066 N, its static radial rated load is approximately 2897574 N. Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
BCZ-8004 bearings ( 205 mm x 520 mm x 168 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 | BCZ-8004 |
| Interchangeable | SKF BCZ-8004 |
| Cage | Machined brass cage, roller centred |
| Bearing Type | Backing bearings for cluster mills |
| Load | radial |
| Accuracy class | P4 (ABEC 7) |
| Coating | NO |
| Bearing part | Complete |
| Design | Without axial guidance |
| Row NO. | Two |
| Seal | Open |
| Number of holes | 6 |
| Units | Metric |
| Manufacturer Part Code | BCZ-8004 |
| Series | BCZ series(BCZ-80..) |
| Application | cluster mills |
| Relubrication feature | Yes |
| Weight [lb] | 478.3982 |
| Cr Radial Dynamic [lbf] | 469622 |
| C0r Radial Static [lbf] | 651374 |
| Pu Fatigue load limit [lbf] | 60348 |
| Fr max. Dynamic radial loads [lbf] | 426760 |
| F0r max. Static radial loads [lbf] | 595644 |
| d φ Inside [inch] | 8.0709 |
| D Φ Outside [inch] | 20.4724 |
| B Thickness [inch] | 6.6142 |
| C [inch] | 6.6142 |
| E [inch] | 14.016 |
| F [inch] | 9.764 |
| b [inch] | 0.5118 |
| K [inch] | 0.3937 |
| r min. Chamfer [inch] | 0.043 |
| H(max.) Section height [inch] | 6.199 |
The BCZ-8004 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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