L-Type-2 Single Axis 300kg Welding Positioner ≤1arcmin IP65 for Robot Cells

L-Type-2 Single Axis Welding Positioner for 300kg Workpieces

The GBS-02-L300-2 is a compact 300kg welding turntable built on an L-shaped frame that puts the spindle over a clear, open loading area. One servo axis rotates the fixture through 0-360° with ≤1arcmin positioning accuracy at a standard table height of 800mm, and the drive is sealed to IP65 so spatter and grinding dust stay out of the gear set. Because the frame is open on one side, an operator or a robot can load a 300kg part from the front with a hoist or a gripper without reaching over a cross beam. The unit runs on 220V or 380V 50/60Hz with a 1-3kW motor selected for the cycle time, and it is normally added to the robot controller as an external axis. In practice this L-type-2 single axis positioner is the right choice when the weld is mostly circular or on one dominant face, and when simplicity of operation matters more than a second tilt axis.

Technical Specifications

Why Choose the L-Frame Layout

• Open loading side: parts can be loaded from the front by hoist, gripper or operator without obstruction.
• Simple single axis: one rotary axis means fewer wear points and a shorter maintenance list.
• Repeatable index: ≤1arcmin positioning lets the robot reuse one program across a batch.
• IP65 protection: the drive and feedback survive spatter and coolant mist in production welding.
• Easy retrofit: the positioner fits into cells where floor space and robot reach are already fixed.

Typical Applications

• Circular seam welding of flanges and rings
• Small tanks, receivers and pressure covers
• Wheel and hub assemblies
• Pipe spools with one rotating weld
• Job-shop work on face plates and chucks

Frequently Asked Questions

Q: When is a single axis enough instead of a two axis positioner?
When the part has one dominant circular seam or one face to be welded. The L-type-2 single axis positioner rotates the workpiece while the robot keeps the torch at a fixed angle, so a tilt axis adds cost without adding weld access.

Q: Can the 300kg welding turntable IP65 be fitted with a chuck?
Yes. Three-jaw chucks, face plates, T-slot tables and dedicated fixtures are available, and the table is machined to suit the chosen interface.

Q: How is the welding current returned through a rotating table?
Through an earth brush on the spindle, so current bypasses the bearings and encoder. This is essential on a 1arcmin robot positioner where any current through the bearing would damage the raceway.

Q: What is needed on site before installation?
A level floor with anchor capacity, 220V or 380V supply as ordered, and enough clearance for the part swing. We provide the foundation plan and commissioning checklist.

Production and Support

Gongboshi Robot Technology has built positioners and robot external axes in Shanghai since 2016 and serves aerospace, automotive, chemical and new-energy customers with a team of more than 100 engineers. Each 1arcmin robot positioner is assembled, run in and checked for table runout, then shipped with test records and wiring diagrams under a 12-month warranty with remote commissioning support.