Z-513342.ZL-N12BA Cylindrical Roller Bearings Four-row, For Tight Fit On Roll Journals
The Z-513342.ZL-N12BA Four-row cylindrical roller bearings is suitable for heavy machinery applications that bear huge radial loads. Classic applications include: support rolls of rolling mills, large gearboxes, heavy machine tool spindles, wind turbine spindles, ship propulsion shafts, and rotor supports for high-power compressors.
The Z-513342.ZL-N12BA bearing is a Cylindrical roller bearings Four-row, with cylindrical bore, for tight fit on roll journals with an inner diameter of 280 mm , an outer diameter of 400 mm, a width of 286 mm. It typically uses PN (ABEC-1) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic radial rated load is approximately 2495412 N, its static radial rated load is approximately 6293624 N. It uses CN standard radial clearance, without seals type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Z-513342.ZL-N12BA bearings ( 280 mm x 400 mm x 286 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 | Z-513342.ZL-N12BA |
| Design Type | N12BA = Two double row cylindrical roller bearings in matched sets |
| Series | Z-51..ZL-N12BA |
| Units | Metric |
| Bearing Type | Cylindrical roller bearings Four-row, with cylindrical bore, for tight fit on roll journals |
| Manufacturer Part Code | Z-513342.ZL-N12BA |
| Interchangeable | FAG Z-513342.ZL-N12BA |
| Temperature - T(min) | -30 °C |
| Temperature - T(max) | +150 °C |
| Roller Material | GCr15SiMn |
| Ring Material | GCr15SiMn |
| Load direction | radial |
| Alias | Non-locating bearings |
| Design drawing | 5 |
| More | Two double row bearings mounted in a set with a circumferential lubrication groove and lubrication holes in the outer rings. |
| Cr - Radial Dynamic Load [N] | 2495412 |
| C0r - Radial Static Load [N] | 6293624 |
| Cur - Radial Fatigue Load [N] | 556703 |
| m - Bearing Mass [kg] | 57.1 |
| d φ - Dimension Inside [mm] | 280 |
| D Φ - Dimension Outside [mm] | 400 |
| B - Dimension Width [mm] | 286 |
| F - Dimension [mm] | 316 |
| r(min.) - Chamfer [mm] | 4 |
| r1(min.) - Chamfer [mm] | 4 |
The Z-513342.ZL-N12BA 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.
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