H-Type Single Axis 500kg Welding Positioner 0-360° IP65 for Robot Welding Cells

H-Type Single Axis Welding Positioner up to 500kg

The GBS-02-H300 and H500 are 500kg welding turntables built on an H-shaped frame that gives a wide, stable base under a rotating table. One servo-driven axis turns the workpiece through 0-360° with ≤1arcmin accuracy, at a table height of 800mm that suits both robot reach and operator loading. The H layout puts the load path straight down into the floor, so a tall box-shaped part does not rock the frame as it indexes, and the drive is sealed to IP65 against spatter, coolant mist and grinding dust. Motor power can be 1kW, 1.5kW, 2kW or 3kW depending on the part inertia and the required cycle time, and the positioner is normally configured as an external axis of the robot so table rotation and torch path are programmed together. Where a fabricator needs a dependable H-type single axis positioner rather than a two axis machine, this is the configuration that keeps the cell simple: one axis to maintain, one earth path, and a table that presents a new face of the part in a fraction of a second.

Technical Specifications

Why the H-Frame Design Holds Accuracy

• Wide base: the H footprint spreads load and resists tipping when an offset workpiece is rotated.
• Short load path: force from the table passes directly into the floor, limiting frame deflection.
• Sealed drive: IP65 construction keeps abrasive dust away from the gear set and encoder.
• Steady earth return: a dedicated brush carries welding current so the bearing and encoder are not damaged.
• Repeatable index: ≤1arcmin positioning lets the robot use the same program for every part in a batch.

Typical Applications

• Box-section frames and machine bases
• Tanks, hoppers and silos with circular seams
• Pump and motor housings
• Agricultural implement parts
• General fabrication requiring four-side access

Frequently Asked Questions

Q: What is the difference between the H-type and the O-type single axis unit?
Both rotate horizontally. The H-frame is wider and better suited to heavier or taller parts on an offset fixture, while the O-frame surrounds the spindle and suits circular seams on flat parts. The H-type single axis positioner is usually chosen when the part centre of gravity sits away from the table centre.

Q: Can 500kg welding turntable rotation be coordinated with the robot?
Yes. When configured as an external axis, the robot controller interpolates table rotation with torch motion, which keeps the weld in the flat position around a corner.

Q: How is the table aligned to the robot after installation?
The base is anchored and levelled first, then the table face is checked for runout and the zero position is set in the controller. We supply the alignment procedure and tolerances.

Q: Which options are available?
Custom table diameters, T-slot patterns, chuck interfaces, taller columns, safety fencing interlocks and standalone control cabinets are all available on request.

Production and Support

Gongboshi Robot Technology has manufactured welding positioners and robot external axes in Shanghai since 2016, supporting aerospace, automotive, chemical and new-energy projects with more than 100 engineers. Each IP65 robot welding positioner is run in under load, checked for table runout and shipped with test records, wiring diagrams and foundation drawings. Standard units deliver in 15-30 working days with a 12-month warranty and remote commissioning support.