Advanced Automated Welding Positioners for Precision Welding
The LD‑RW Positioner Series is a compact, high-performance solution designed to simplify and automate circumferential welding operations across a wide range of industries, including fabrication, pressure vessel manufacturing, piping, shipbuilding, and structural engineering.
This series enables fully automated rotary motion, allowing for consistent and accurate circular welding, ideal for pipes, flanges, round vessels, and cylindrical components. Whether used in small workshops or large-scale industrial settings, the LD-RW Series enhances efficiency, improves weld quality, and reduces manual labour.
Structure example/Twin torch weaving
LD-150RW Positioner
A compact, automated welding positioner that rotates cylindrical workpieces for precise and consistent circumferential welding.
Weaving Unit WU-3R ×2:
Dual weaving units create side-to-side torch motion (oscillation), enabling wide-bead or multi-pass welds with two torches simultaneously.
Remote Pendant:
A handheld controller that allows operators to manage rotation, speed, and timing settings remotely for safer and more efficient operation.
Scroll Fastener WP-300:
A clamping device that securely holds round workpieces in place on the rotating table, ensuring centred and stable welding.
Torch Stand L:
A sturdy, adjustable support for holding welding torches in the correct position during automated or semi-automated welding processes.
Features
Automates circumferential welding just by including a connector
Enables automatic circular welding with simple plug-in connectivity, eliminating the need for complex setup or programming.
Reduces wires with an internal controller
Built-in controller eliminates the need for external control boxes, minimising wiring and enhancing system compactness.
Compatible with the current switching of the welder
Seamlessly integrates with various welding power sources, supporting synchronised arc start/stop with current switching.
Conditions can be managed easily with the digital display.
Allows precise control of rotation speed, arc timing, and overwrap settings through an easy-to-use digital interface.
Technical specifications
LD-RW Positioner Series
Model | LD-60RW | LD-150RW | LD-300RW | LD-600RW | |
Maximum horizontal load | 60kg | 150kg | 300kg | 600kg | |
Maximum vertical load | 30kg | 120kg | 200kg | 500kg | |
Table diameter | φ300mm | φ380mm | φ450mm | φ620mm | |
Table inclined shaft method | Manual | Electric | |||
Tolerant inclined torque(kgf/mm) | Manual | 141500 | |||
During max. vertical load tolerant inlined torque(kgf/mm) | Manual | 141500 | |||
Table -Tilt access distance | 96mm | 100mm | 133mm | ||
Table incline angle | -135~135° | 0~90° | |||
Table rotation speed | Max. | 0.42rpm | 0.15rpm | 0.23rpm | 0.2rpm |
Min. | 16rpm | 6.2rpm | 4.6rpm | 1.10rpm | |
Table Rotation Torque (kgf/m) | 1500 | 3000 | 8000 | 50000 | |
During max. vertical load tolerant center of gravity eccentricity | 50 | 25 | 40 | 100 | |
Setting Items | Standard Function | rotation speed adjustment, normal rotation/reverse switch, automatic circumferential welding mode/manual operation mode switch, initial arc time settings (0～9.999 sec.), overwrap time settings (0-99.99 sec.) | |||
WU-3R | Weaving unit swing speed settings (400-1500mm/min), weaving unit swing width setting (0-100.0mm), weaving unit left/middle/right stop time (0-10 sec.) | ||||
Tolerant welding electric current | 500A | 750A | |||
Operation Panel | Installed in main body | Remote Pendant | |||
Outside dimension（W×D×H） | 421×579×379mm | 542×747×432mm | 575×750×550mm | 744×993×728mm | |
Main Body weight | 35kg | 66kg | 115kg | 271kg | |
Input power source | Single Phase 100V-240V 50/60Hz | 3 Phase 200V 50/60Hz | |||