Large Diameter Slewing Ring
Large diameter slewing bearing (Large Diameter Slewing Ring) as the core of heavy machinery rotary joints, in the market is positioned as a high-load, high-reliability precision transmission scheme. Its basic structure consists of an inner ring, an outer ring, rolling elements (balls or rollers) and an integrated sealing system, which can withstand huge axial forces, radial forces and overturning moments at the same time. The core technical advantage of the product lies in its “shaftless” design. The integrated gear structure simplifies the drive system of the whole machine. While ensuring 360-degree smooth rotation, it significantly improves the structural rigidity and operating accuracy of the equipment. It is an indispensable power hub for large-scale lifting, mining and energy equipment. This series of products usually use 42CrMo or 50Mn and other high-strength alloy steel forgings, the raceway after induction hardening treatment, the hardness can reach HRC 55-62, to ensure the fatigue life under extreme conditions. The technical specifications cover a large diameter range from 1000mm to more than 5000mm, supporting internal teeth, external teeth or toothless configurations. Its design advantages are reflected in the highly integrated installation hole position and multi-layer lip seal, which greatly optimizes the field installation efficiency and reduces the maintenance frequency. Whether it is an offshore operation platform with high salt spray or a dust-intensive mining site, large-diameter slewing bearings can bring long-term economic benefits to customers by virtue of excellent material toughness and environmental adaptability.

Excellent overall load bearing capacity
The combination of reinforced raceway design and large-size rolling elements can withstand overturning moments of up to 15,000kNm or more. This high-strength bearing structure ensures the stability of the center of gravity of the large tower crane or ship unloader when rotating at full load, and effectively prevents structural deformation caused by load concentration.

Deep induction hardening process
the depth of the raceway surface hardening hardening layer is precisely controlled at 3-6mm, and the hardness performance above HRC 58 improves the rated static safety factor of the product by 25%. This feature significantly enhances the compressive strength of the contact surface and reduces the risk of raceway spalling 80% under heavy impact conditions.

High precision gear transmission accuracy
the gear part adopts advanced gear shaper or grinding technology to control the cumulative error of the weekly section within 0.15mm. The high-precision tooth profile meshing can reduce the backlash impact and vibration in the transmission process, make the driving torque transmission more stable, and extend the wear life of the driving gear by about 3 years.

Multiple laboratory-grade sealing system
Equipped with special labyrinth labyrinth or double-lip nitrile rubber sealing strip, it can block 99.7% of tiny dust and external water vapor from invading the interior. This high-performance seal guarantees the purity of the grease, even in the sandy mining area, it can also reduce the number of unplanned disassembly and maintenance by 50%.

Modular simple installation design
the inner and outer rings are preset with evenly distributed high-strength bolting holes, replacing the traditional central spindle structure. This design greatly reduces the total height and weight of the equipment, not only simplifies the spatial layout of the mainframe, but also shortens the on-site assembly time by about 30 working hours.

Integrated automatic lubrication interface
multiple stainless steel grease nozzles and internal circulating oil channels are symmetrically arranged around the bearing ring to support access to the central centralized lubrication system. Ensure that the grease can evenly cover the full range of the 360-degree raceway, avoid abnormal temperature rise caused by local dry friction, and reduce the labor cost of daily maintenance by 40%.
large diameter slewing ring characteristics

Excellent overall load bearing capacity
The combination of reinforced raceway design and large-size rolling elements can withstand overturning moments of up to 15,000kNm or more. This high-strength bearing structure ensures the stability of the center of gravity of the large tower crane or ship unloader when rotating at full load, and effectively prevents structural deformation caused by load concentration.

Deep induction hardening process
the depth of the raceway surface hardening hardening layer is precisely controlled at 3-6mm, and the hardness performance above HRC 58 improves the rated static safety factor of the product by 25%. This feature significantly enhances the compressive strength of the contact surface and reduces the risk of raceway spalling 80% under heavy impact conditions.

High precision gear transmission accuracy
the gear part adopts advanced gear shaper or grinding technology to control the cumulative error of the weekly section within 0.15mm. The high-precision tooth profile meshing can reduce the backlash impact and vibration in the transmission process, make the driving torque transmission more stable, and extend the wear life of the driving gear by about 3 years.

Multiple laboratory-grade sealing system
Equipped with special labyrinth labyrinth or double-lip nitrile rubber sealing strip, it can block 99.7% of tiny dust and external water vapor from invading the interior. This high-performance seal guarantees the purity of the grease, even in the sandy mining area, it can also reduce the number of unplanned disassembly and maintenance by 50%.

Modular simple installation design
the inner and outer rings are preset with evenly distributed high-strength bolting holes, replacing the traditional central spindle structure. This design greatly reduces the total height and weight of the equipment, not only simplifies the spatial layout of the mainframe, but also shortens the on-site assembly time by about 30 working hours.

Integrated automatic lubrication interface
multiple stainless steel grease nozzles and internal circulating oil channels are symmetrically arranged around the bearing ring to support access to the central centralized lubrication system. Ensure that the grease can evenly cover the full range of the 360-degree raceway, avoid abnormal temperature rise caused by local dry friction, and reduce the labor cost of daily maintenance by 40%.
large diameter slewing ring for people

Large Tower Crane and Crawler Crane Manufacturing Engineer

Wind turbine yaw and pitch system R & D team

Procurement Supervisor of Excavator and Stacker-reclaimer in Open Pit Mine

Port automation handling machinery and ship unloader design party.

Project leader of shield machine and underground tunnel engineering equipment

Large satellite antenna and radar base swing system supplier

Offshore Drilling Platform Deck Crane Supporting Contractor

Large sewage treatment mud scraper manufacturer in the field of environmental protection

Automation industrial robot heavy-duty turntable integrator

Structural designer of large amusement facilities and revolving restaurant
large diameter slewing ring for people

Large Tower Crane and Crawler Crane Manufacturing Engineer

Wind turbine yaw and pitch system R & D team

Procurement Supervisor of Excavator and Stacker-reclaimer in Open Pit Mine

Port automation handling machinery and ship unloader design party.

Project leader of shield machine and underground tunnel engineering equipment

Large satellite antenna and radar base swing system supplier

Offshore Drilling Platform Deck Crane Supporting Contractor

Large sewage treatment mud scraper manufacturer in the field of environmental protection

Automation industrial robot heavy-duty turntable integrator

Structural designer of large amusement facilities and revolving restaurant
NINGGUO SWBTEC INDUSTRY CO.,LTD

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Ningguo Dadao, Ningguo Economic Develope Zone, Ningguo,Xuancheng,Anhui,China


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