3TONS L Type Positioner

LHBJ-30 Welding Positioner

1. Slewing bearing

The slewing bearing is a critical load-bearing component that enables relative rotation between machine parts while simultaneously handling axial, radial, and overturning moment forces. Its compact and lightweight design, made from high-strength alloy steel, ensures smooth operation with high precision (±0.05° rotation accuracy) and long service life. Key configurations include mounting bolt holes, optional internal/external gears, lubrication ports, and sealing systems for enhanced reliability. With a diameter range of 300–5000mm and load capacity up to 50,000kN, it is widely used in construction machinery, wind turbines, cranes, and military equipment. Custom designs are available for specialized applications.

2. Gear

1). Reverse gear

Generally, the turning angle of the turning gear is 0 °to  90 °. The function of displacement is achieved by turning the table.

2). Reverse gear

Gears are toothed mechanical components that transmit torque through meshing engagement with other gear elements like racks, worms or additional gears, enabling precise control over power transmission by modifying speed/torque ratios, redirecting motion paths, and converting motion types (e.g., rotary to linear). Their interlocking teeth design provides reliable force transfer while allowing for customizable mechanical advantage in various industrial applications.

3.Reducer

Gear reducers are mechanical power transmission devices that utilize precision gear systems to reduce input speed while proportionally increasing output torque, with the output torque being the product of motor torque and gear ratio (without exceeding the reducer’s rated capacity). These systems simultaneously decrease load inertia by the square of the reduction ratio, enabling optimized power conversion for various industrial applications through efficient gear engagement.

Our L-Type welding positioner ensures long-term reliability through proper maintenance. For daily operation, remove welding slag and verify lubrication levels while inspecting electrical safety components. Monthly procedures include:

• Tightening positioner mounting bolts

• Examining gear transmission mechanisms

• Testing emergency stop functions

Annual deep maintenance requires:
✓ Replacement of wear-prone parts in the rotary table
✓ Complete bearing re-lubrication
✓ Full system recalibration to maintain ±0.5° positioning accuracy

Critical operational alerts:
◆ Immediate shutdown when detecting abnormal gear noise
◆ Professional inspection for uneven rotation patterns

This maintenance protocol delivers:

• 30% extended service life for welding turntable components

• 50% reduction in unplanned downtime

• Consistent weld joint precision for automated welding applications

Certification & Technology
The 3TONS L-Type positioner carries CE/ISO certification and incorporates:

• Robust cast steel construction (5-400 ton capacity options)

• Precision worm gear drive for heavy-duty positioning

• PLC-integrated controls compatible with robotic welding cells

Industry Applications:
✔ Pressure vessel fabrication
✔ Structural steel welding
✔ Wind tower component assembly

Wuxi ABK Machinery Co.Ltd is a professional manufacturer of welding rotator in China. And our welding rotator mainly includes standard welding rotator, adjustable welding rotator, and special welding rotator. We can also provide our clients around the world with many other products including welding turntable, pile welding machine, wind tower production line, H beam welding line, pipe welding equipment, CNC cutting machine, grinding machine, roll forming machine, plate bending machine, etc. We have obtained ISO and CE certification, and we also offer OEM service.