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This slewing bearing is specially designed for heavy-duty construction machinery. Featuring a three-row cylindrical roller structure integrated with external gear drive and flange mounting holes, it can simultaneously withstand axial loads, radial loads, and overturning moments. It is widely used in heavy-duty applications such as large cranes, port machinery, bucket-wheel excavators, and wind power equipment.
Core Structure & Technical Features
The outer ring is integrated with high-precision involute external teeth. The module and tooth profile are customized according to customer working conditions. After multiple precision machining processes including gear hobbing, quenching, and gear grinding, the tooth surface hardness reaches 55-62 HRC, combining high wear resistance and transmission accuracy. It can directly mesh with the drive gear to achieve smooth and efficient slewing drive.High-precision mounting holes are evenly distributed on both inner and outer rings, enabling direct connection to the equipment main body with high-strength bolts for convenient installation and high positioning accuracy. At the same time, it is equipped with double-lip or multi-lip sealing structures, which can effectively block the intrusion of pollutants such as dust, rainwater, and sediment, and prevent grease leakage. It adapts to harsh outdoor and port working environments, extending the bearing service life.The bearing rings are made of high-quality alloy structural steel (such as 42CrMo, 50Mn). After forging, normalizing/quenching and tempering pretreatment, the raceways and tooth surfaces undergo medium-frequency quenching or integral heat treatment, ensuring a balance between matrix toughness and surface hardness, with excellent fatigue resistance, impact resistance, and wear resistance. All key components are inspected by non-destructive testing to strictly control internal defects and ensure long-term operational reliability.
Performance Advantages
The three-row roller structure can simultaneously withstand large axial forces, radial forces, and overturning moments, meeting the load requirements of ultra-heavy equipment such as 4,000-ton cranes. Precisely machined raceways and tooth profiles, combined with optimized clearance control, enable low-clearance slewing, ensuring equipment operation stability and positioning accuracy. The fully sealed design and anti-corrosion treatment allow stable operation in a wide temperature range of -40℃ to +80℃, as well as high-dust, high-humidity, and salt spray environments.Long Service Life & Low Maintenance: High-quality materials and heat treatment processes significantly improve fatigue life. The lubrication system is reasonably designed with long maintenance cycles, reducing equipment downtime costs.
This slewing bearing, with its ultra-high load capacity, reliable performance, and wide adaptability to working conditions, serves as a key component for heavy machinery to achieve 360-degree slewing motion, providing core support for the stable operation of equipment.
This slewing bearing is specially designed for heavy-duty construction machinery. Featuring a three-row cylindrical roller structure integrated with external gear drive and flange mounting holes, it can simultaneously withstand axial loads, radial loads, and overturning moments. It is widely used in heavy-duty applications such as large cranes, port machinery, bucket-wheel excavators, and wind power equipment.
Core Structure & Technical Features
The outer ring is integrated with high-precision involute external teeth. The module and tooth profile are customized according to customer working conditions. After multiple precision machining processes including gear hobbing, quenching, and gear grinding, the tooth surface hardness reaches 55-62 HRC, combining high wear resistance and transmission accuracy. It can directly mesh with the drive gear to achieve smooth and efficient slewing drive.High-precision mounting holes are evenly distributed on both inner and outer rings, enabling direct connection to the equipment main body with high-strength bolts for convenient installation and high positioning accuracy. At the same time, it is equipped with double-lip or multi-lip sealing structures, which can effectively block the intrusion of pollutants such as dust, rainwater, and sediment, and prevent grease leakage. It adapts to harsh outdoor and port working environments, extending the bearing service life.The bearing rings are made of high-quality alloy structural steel (such as 42CrMo, 50Mn). After forging, normalizing/quenching and tempering pretreatment, the raceways and tooth surfaces undergo medium-frequency quenching or integral heat treatment, ensuring a balance between matrix toughness and surface hardness, with excellent fatigue resistance, impact resistance, and wear resistance. All key components are inspected by non-destructive testing to strictly control internal defects and ensure long-term operational reliability.
Performance Advantages
The three-row roller structure can simultaneously withstand large axial forces, radial forces, and overturning moments, meeting the load requirements of ultra-heavy equipment such as 4,000-ton cranes. Precisely machined raceways and tooth profiles, combined with optimized clearance control, enable low-clearance slewing, ensuring equipment operation stability and positioning accuracy. The fully sealed design and anti-corrosion treatment allow stable operation in a wide temperature range of -40℃ to +80℃, as well as high-dust, high-humidity, and salt spray environments.Long Service Life & Low Maintenance: High-quality materials and heat treatment processes significantly improve fatigue life. The lubrication system is reasonably designed with long maintenance cycles, reducing equipment downtime costs.
This slewing bearing, with its ultra-high load capacity, reliable performance, and wide adaptability to working conditions, serves as a key component for heavy machinery to achieve 360-degree slewing motion, providing core support for the stable operation of equipment.
