... weight loading, the welding manipulator has many types:light duty type(LHQ),medium duty(LHZ), heavy duty(LHW), and super ... drooping of boom along horizontal travel is 2mm/m*boom lifting device has anti-falling device ,of ratchet6 structure, safe and ... drive*control unit includes control board and pendant, interface with positioner and turning rolls also prepared. ModelLHQ1×1LHQ2×2LHQ3×3LHQ4×4Lifitng ...