MEDIUM AND LARGE BEARINGS

FINE Medium and large bearings refer to a category of bearings with large outer diameters, high load capacity, and complex structures. They are typically used in heavy machinery, large slewing mechanisms, and heavy-duty transmission systems. As core supporting components, they determine the accuracy, service life, and reliability of large-scale equipment.

Construction & Mining Machinery:Excavators, cranes, tunnel boring machines (TBMs), crushers, ball mills, and pavers. These bearings withstand heavy loads, impacts, vibrations, and harsh environments, requiring high load capacity and reliability.

Metallurgy & Steel Rolling Equipment:Rolling mills, continuous casters, straighteners, and roller tables. They operate under high temperatures, heavy loads, high speeds, and dust/water contamination, demanding exceptional rigidity, precision, and impact resistance.

Port & Lifting Equipment:Gantry cranes, ship-to-shore cranes, stackers, and winches. Frequent start-stop and heavy-duty slewing require high stability and load-bearing performance.

Machine Tools & Heavy Equipment:CNC vertical lathes, floor-type boring and milling machines, machining centers, and rotary tables. High precision, rigidity, low friction, and smooth running are critical.

Shipbuilding & Offshore Engineering:Marine propulsion systems, deck machinery, drilling platforms. They require corrosion resistance, seawater tolerance, and the ability to resist overturning moments.

Cement, Building Materials & Power Equipment:Vertical mills, rotary kilns, coal mills, steam turbines, generators, and large pumps. Designed for long continuous operation with high temperature resistance and low failure rates.

1. Relatively large outer diameter, covering medium to extra-large sizes
2. Diverse designs: spherical roller bearings, cylindrical roller bearings, tapered roller bearings, cross-roller bearings, split bearings, etc.
3. Heavy-duty optimized with more and larger rolling elements

1. Capable of supporting extreme radial, axial, and overturning loads
2. Many types handle combined radial + axial + moment loads
3. Ideal for low-speed, heavy-duty, and shock-loading conditions

1. High rigidity to minimize deformation and maintain equipment accuracy
2. High-precision grades available: P5, P4, and higher for machine tools and wind turbines

1. High-quality bearing steel, carburizing steel, alloy steel, stainless steel
2. Processes including vacuum degassing, grain refinement, and deep hardening
3. Surface treatments: carburizing, nitriding, coating for improved wear and impact resistance