8 by 8 Welding manipulator A, Using the international famous-brand inverter, It has high reliability and high precision of adjusting the electromotor rotate speed. B, The horizontal boom and vertical mast are made out of the box profiled iron: This structure is compact and rigidity is strong. C, The built-in counterweight in the vertical mast: to lift the boom up and down equably, and reliably lock it on the ideal location. D, Adopt various protecting mode such as mechanical set and electric part: Guaranric part: Guarantee to use safely and run reliably. E, Triangular track: Motion is smooth and precision is high (rectangle track which has the heavy bearing capacity is adopted for the heavy-duty and manned types). F, Modular design: The devices such function as turn round, travel, manned set, retractile boom can be assembled optionally according to the requires of users. Main Technical Parameter TypeLHQ(Light)LHJ(Medium)NLH(Heavy)LHW(Super-heavy)The rectangular guiding rail width of column and boom (mm)25356075Lifting stroke(m)1-32-52-82-13Retracting stroke(m)1-3.52-52-82-13Lifting speed(mm/min)450600800800Retracting speed(mm/min)100-1500100-1500100-1500100-1500Min. height under boom(mm)300400450600Min. distance from column center to the front end of the boom(mm)50010001000100lt;/td>10001000Column revolvingAngle(°)±180±180±180±180Speed(rpm)By manual0.11/By manual0.11/By manual0.10/By manualTrolley traveling speeding(mm/min)Traveling by manual200020001000Height of trolley(mm)300440440440Span of trolley rail(mm)1200150020002500