What We Do

China Slew Bearing Manufacturer

ZZ Bearing (Shanghai) Co.Ltd, is a professional manufacturer and exporter of slewing bearing, slewing drives in the China, more than 20 years of experience, We provide all kinds of slewing ring bearings, and we are capable to customized slewing ring bearing according to customers drawings and requirements.

√ The slewing bearing is a large bearing with a special structure that integrates multiple functions such as support, rotation, transmission, and fixation.

√ It is equipped with mounting holes, lubricating oil and sealing device, which can meet various needs

√ Simultaneously bear comprehensive loads such as large axial load, radial load and overturning moment

√ Widely used in a variety of large-scale slewing devices, supporting customization on demand

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China Slewing Bearing Manufacturing
Single Row Four-Point Contact Ball Slewing Bearing

Single Row Four-Point Contact Ball Slewing Bearing

In the world of heavy machinery and precision rotation, the Single Row Four-Point Contact Ball Slewing Bearing stands as a cornerstone component. Designed to handle combined loads—axial, radial, and tilting moments simultaneously—this bearing type offers a compact yet robust solution for applications requiring smooth, reliable rotation under significant stress.
Slewing Bearing

Slewing Bearing

A slewing bearing—also known as a turntable bearing—is a large, specialized-structure bearing capable of simultaneously withstanding axial forces, radial forces, and overturning moments. Serving as the "core joint" for various types of mechanical equipment, it fulfills critical functions: connecting the upper and lower structural components, enabling full 360-degree rotation, and supporting the entirety of the operational load.
Double Row Different Diameter Ball Slewing Bearing

Double Row Different Diameter Ball Slewing Bearing

When standard single-row bearings hit their load limits, the Double Row Different Diameter Ball Slewing Bearing emerges as the engineered answer. Unlike conventional double-row designs that use identical ball sizes, our unique configuration utilizes two rows of steel balls with different diameters. This strategic design allows the bearing to independently and more efficiently handle axial loads and radial/tilting moments within a single compact unit.
Double Row Same Diameter Ball Slewing Bearing

Double Row Same Diameter Ball Slewing Bearing

When an application demands a significant step up in load capacity from a single-row design but doesn't require the massive footprint of a three-row roller bearing, the Double Row Same Diameter Ball Slewing Bearing emerges as the ideal engineering compromise. This component is defined by its symmetrical architecture: two rows of steel balls, identical in diameter, arranged to handle complex combined loads with exceptional stability. Unlike the "different diameter" variant which optimizes for specific axial dominance, the double row same diameter ball bearing distributes stress evenly across both rows. This symmetry provides superior rigidity against tilting moments and radial forces, making it exceptionally reliable for applications where the load direction fluctuates or where high rotational precision is critical under heavy static loads.
Triple Row Roller Slewing Bearing

Triple Row Roller Slewing Bearing

Unlike single or double-row designs that rely on balls, this robust component utilizes three independent rows of cylindrical rollers. Each row is dedicated to a specific load direction: one row handles axial loads, while two cross-aligned rows manage radial forces and tilting moments. This complete separation of load paths allows the triple row roller slewing ring to achieve unparalleled load capacities in a relatively compact envelope, making it the indisputable choice for the largest and most demanding machinery on Earth.
Crossed Roller Slewing Bearing

Crossed Roller Slewing Bearing

When your design demands the highest possible rotational accuracy and rigidity within a minimal envelope, the Crossed Roller Slewing Bearing is the definitive engineering solution. Unlike ball-bearing equivalents that rely on point contact, this component utilizes cylindrical rollers arranged in a 90° "V" formation (crossed at right angles). This unique geometry creates line contact, distributing loads over a significantly larger surface area.
HSE Series Slew Drive

HSE Series Slew Drive

The HSE Series slewing drive is a high-performance, integrated rotary transmission unit meticulously engineered by our company for heavy-duty and high-speed applications. As a specialized manufacturer and supplier of slewing drives, we combine years of accumulated expertise in precision manufacturing with innovative design concepts to provide our customers with ideal rotary solutions characterized by robust load-bearing capacity, smooth operation, and exceptional longevity.
Dual-Worm Slewing Drive

Dual-Worm Slewing Drive

The Dual-Worm Slewing Drive is a new generation of high-performance, integrated slewing transmission device meticulously developed by our company to address ultra-heavy loads, high torque output requirements, and harsh operating environments. As a professional manufacturer and supplier of slewing drives, we leverage our extensive expertise in gear transmission design and manufacturing to seamlessly integrate parallel dual-worm drive technology with high-strength slewing bearings, thereby providing our customers with ideal slewing solutions characterized by superior torque density, enhanced load-bearing capacity, and heightened safety and reliability.
Application of slewing bearing
Slewing bearing for Excavator

Slewing bearing for Excavator

When an excavator operator swings the upper structure to position a load or dig a trench, the smoothness and reliability of that movement depend entirely on one critical component: the slewing bearing for excavator. Often called a swing bearing, turntable bearing, or slewing ring, this isn't just another off-the-shelf part—it's the engineered interface between stationary undercarriage and rotating upper works, carrying axial loads, radial forces, and overturning moments simultaneously.
Slewing bearing for Filling Machine

Slewing bearing for Filling Machine

Our product line isn't just a catalog of standard sizes; it is a engineered response to the challenges faced by packaging engineers. Whether you are dealing with viscous liquids, fine powders, or sterile pharmaceutical products, our rotary table bearings provide the stability needed to maintain fill accuracy within microns, cycle after cycle. We move beyond generic offerings to provide custom slewing ring solutions tailored to the specific footprint and load profiles of modern filling systems.
Slewing bearing for Port Crane

Slewing bearing for Port Crane

In the relentless environment of modern container terminals, downtime is not an option. Our Port Crane Slewing Bearing Series is purpose-built to withstand the punishing cycles of loading and unloading operations where reliability dictates profitability. Unlike generic off-the-shelf components, our rotary solutions are engineered from the ground up to handle the unique combination of massive axial loads, overturning moments, and radial forces inherent in Ship-to-Shore (STS) cranes, Rubber-Tired Gantry (RTG) cranes, and Rail-Mounted Gantry (RMG) systems.
Slewing bearing for Truck Crane

Slewing bearing for Truck Crane

At our manufacturing facility, we specialize in producing a comprehensive range of slewing bearings for truck cranes that meet the most demanding operational requirements. Our product lineup includes single-row four-point contact ball bearings, double-row ball bearings, and crossed roller slewing rings – each engineered to deliver optimal performance under varying load conditions and environmental challenges.
Slewing bearing for Aerial Platform Vehicles

Slewing bearing for Aerial Platform Vehicles

As a specialized slewing ring manufacturer based in China, we understand that overseas engineers and procurement managers are looking for more than just a catalog part. You need a partner who understands the rigorous safety standards of ANSI, CE, and AS/NZS, and who can deliver custom slewing solutions that balance extreme load capacity with the weight constraints essential for mobile aerial work platforms (AWPs). Our factory doesn't just produce bearings; we engineer stability for the world's most demanding elevated access applications.
Slewing bearing for Ferris Wheel

Slewing bearing for Ferris Wheel

When it comes to giant observation wheels and classic Ferris rides, the heart of smooth, safe rotation lies in one critical component: the slewing bearing. As a specialized Chinese manufacturer with over 20 years of experience in large-diameter rotational solutions, we engineer turntable bearings that meet the unique demands of amusement structures—where human safety, weather exposure, and continuous cyclic loading converge.
Slewing bearing for Mud Ccraper

Slewing bearing for Mud Ccraper

When your mud scraper operates in the toughest conditions—saturated soil, abrasive slurry, and continuous rotational stress—ordinary bearings simply won't survive. That's why we've developed a dedicated series of slewing bearings engineered exclusively for mud scraper applications across mining, dredging, and heavy civil construction projects.
Slewing bearing for Welding Robot

Slewing bearing for Welding Robot

Unlike generic turntable bearings adapted from crane or excavator applications, our robotic welding slew rings are engineered from the ground up for the unique dynamics of welding positioners and robotic turning tables. We understand that welding robots operate under constant thermal cycling, require micro-adjustment capabilities, and must maintain position lock during high-current arcs. Our solutions address these challenges head-on.

Specialises in designing and producing bespoke slewing bearing to meet customers specific requirements.

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Company profile
  • Company profile
    126 +our 126 employees
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    30000 +more than 30,000 square meters

Custom Slewing Bearing

Established in 1998, ZZ Bearing (Shanghai) Co.Ltd. (ZZ) is a professional manufacturer of slewing bearings and we can design and manufacture single-row ball slewing ring bearing, double-row ball slewing ring bearing, three-row roller slewing bearing, ball-roller combination slewing ring, crossed roller bearing, crossed tapered roller bearing, slew drives and custom bearings.

By virtue of expertise team, advanced manufacturing technologies and strict quality management system, ZZ takes the lead in the R&D of slewing bearings and custom bearings, which are designed with reasonable construction, light weight, good load carrying capacity and high versatility. The bearings’ diameters range from 200 to 15000mm and the accuracy covers P0, P6 and P5 class. Our slewing bearings, slew drives, precision bearings and custom bearingsare widely used in construction, engineering, mining, marine, chemical, military, wind turbine, medical equipment, and many other industries.

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