Weforging – Rolled Ring Forgings for Slewing Bearings
Weforging specializes in producing high-precision rolled ring forgings for slewing bearings used in heavy-duty industrial applications. Our seamless forged rings feature exceptional structural integrity, optimized grain flow, and consistent mechanical properties—making them ideal for large rotating assemblies operating under continuous load, vibration, and harsh environments.
With fully integrated capabilities covering forging, heat treatment, CNC machining, and inspection, we supply slewing bearing rings in both forged-only and fully-machined conditions according to customer drawings.
What Is a Slewing Bearing?
A slewing bearing is a large-size rotational bearing designed to support axial, radial, and overturning loads while allowing smooth rotation between two structural components. It typically consists of an inner ring, outer ring, rolling elements, and raceways. Slewing bearings are essential in equipment that requires controlled rotational movement under heavy loads—such as excavators, cranes, wind turbines, and industrial turntables.
Forged rings serve as the core structural components of slewing bearings, providing the strength, stability, and precision needed for long-term reliable operation.
Key Features & Advantages
Weforging’s rolled ring forgings for slewing bearings use a seamless, weld-free structure that provides reliable fatigue strength and long service life. The forging process creates continuous grain flow, improving toughness and impact resistance—important for equipment operating under heavy load and vibration. Controlled ring-rolling and CNC machining ensure good dimensional accuracy, while heat treatment keeps hardness and microstructure stable. Diameters, wall thicknesses, and raceway designs can be customized to match project requirements, making these rings suitable for high-torque, slow-rotation, and heavy-duty applications.
Materials Available
42CrMo / AISI 4140 / SCM440
50Mn / 42CrMo4 / C45
20CrMnTi / 18CrNiMo7-6 (case-hardening steels)
Stainless steel options
Special alloys available on request
Manufacturing Capabilities
Weforging provides a full production workflow:
Billet cutting & heating
Rolled ring forging (radial + axial expansion)
CNC machining – OD, ID, faces, raceways
Gear cutting (optional)
Final finishing & inspection
Rings can be supplied as:
Forged blanks
Semi-finished machined rings
Fully-machined slewing bearing rings
Typical Applications
Our slewing bearing forged rings are widely used in:
Excavators, cranes, and construction machinery
Wind turbine yaw and pitch systems
Industrial turntables and welding positioners
Mining and material-handling equipment
Offshore structures and energy equipment
These applications require high load-carrying capacity, excellent wear resistance, and long-term operational reliability—attributes where forged rings deliver outstanding performance.
Why Choose Weforging
100% integrated forging + machining solution
Rapid lead time for both standard and customized sizes
Experienced engineering support for design and material selection
Stable quality proven in global OEM applications
