
Medium‑Duty Welding Positioners from 0°to 135° Incline, Up to 5 T Capacity
The MD-R Series Medium-Duty Welding Positioners are engineered to deliver precise and efficient rotation and tilting of heavy workpieces, thereby enhancing welding quality and productivity across various fabrication environments. Designed for medium-duty applications, this series provides an ideal solution for handling components that require controlled positioning during welding, assembly, or inspection.
Each model, the MD-1000R (1 ton), MD-3000R (3 ton), and MD-5000R (5 ton), offers a robust and compact design to ensure high performance in workshops with limited space. With a tilt range of 0° to 135°, these positioners enable operators to adjust the work angle for optimal access and weld quality, thereby significantly reducing operator fatigue and welding time.
These positioners are ideal for operations where precision, repeatability, and safety are critical. By automating the rotation and tilting of the workpiece, the MD‑R Series minimises manual intervention, ensuring consistent weld quality, reduced rework, and improved operator ergonomics.
Whether you're in heavy fabrication, steel structure production, or welding automation, KOIKE's MD‑R Series provides a reliable, high-performance positioning solution tailored for modern industrial demands.
Features
Rotation table incline range secured at 0–135°:
This allows the workpiece to be safely tilted from a flat horizontal position up to 135°, enabling optimal welding angles and improved accessibility during complex fabrication tasks.
Compact main body design:
The positioner's space-efficient structure is ideal for workshops with limited floor area, ensuring powerful performance without compromising on workspace flexibility.
Technical specifications
MD-R Positioner Series
Model type | MD-1000R | MD-3000R | MD-5000R | |
Maximum equipping load | 1000kg | 3000kg | 5000kg | |
Table diamension | φ1,000mm | □1,040mm | □1,400mm | |
Incline speed(rpm) | 50Hz:0.54,60Hz:0.65 | 50Hz:0.51,60Hz:0.62 | 50Hz:0.28,60Hz:0.34 | |
Incline Torque N/m(kgf/m) | 6000(610) | 10200(1050) | 37000(3800) | |
Maximum load Tolerated center of gravity height(mm) | 430 | 139 | 430 | |
Table tilt angle | 0~135° | |||
Table rotation | Max. | 0.1rpm | 0.028rpm | 0.026rpm |
Min. | 2.0rpm | 0.5rpm | 0.5rpm | |
Table height at vertical level | 1,200mm | 1,608mm | 2,000mm | |
Rotation Torque N/m(kgf/m) | 3100(320) | 6400(650) | 18700(1900) | |
Maximum load Tolerated eccentricity distance(mm) | 280 | 210(at 6-60Hz)*1 135(at 60-100Hz) | 340 | |
Tolerant welding electric current | 550A | |||
Outside dimension (W×D×H) | 975×1000×1,209mm | 1,470×1,520×1,600mm | 1,820×2,090×2,000mm | |
Body weight | 1,400kg | 3,300kg | 4,300kg | |
Input power source | 3 Phase 200V 50/60Hz | |||
