Our custom 3-jaw and 4-jaw welding chucks are specialized clamping accessories designed for welding positioners. The 3-jaw version features a self-centering structure for rapid clamping of round and symmetrical workpieces, while the 4-jaw independent chuck accommodates round, square, and irregular eccentric workpieces.

Constructed from high-strength cast steel, these chucks deliver strong clamping force with minimal deformation. We offer full customization of outer diameter, center hole, jaw stroke, and mounting hole layout to perfectly fit various welding positioner brands. Primarily used for pipe, tank, pressure vessel, and structural part welding applications. CE compliant for European markets.

• Self-centering 3-jaw design for fast setup of circular pipes and cylinders
• 4-jaw independent adjustable jaws suitable for square, rectangular, and eccentric workpieces
• Heavy-duty cast steel body with anti-wear jaw teeth for stable clamping without slipping
• Large through-hole design for long pipe penetration welding
• Full custom service: outer size, center bore, jaw travel, and mounting bolt holes can be modified
• Easy installation with direct bolt-on compatibility for most standard welding positioner turntables
• Manual wrench operation for reliable performance in heavy-duty welding workshops
• Available for OEM & ODM, compatible with 100kg-5000kg welding positioner models

• Pipe spool fabrication
• Pressure vessel & tank welding
• Cylinder and flange welding
• Irregular structural component welding
• Automatic welding station supporting fixture
• Workshop custom welding production line

1. Custom outer diameter, center hole size, and jaw clamping travel
2. Custom mounting hole pattern to fit your existing positioner turntable
3. Custom jaw thickness and jaw hardening treatment
4. OEM logo marking on chuck body
5. Support for customer drawings or samples for non-standard production