Small welding positioner generally use DC motor drive, enabling stepless speed not found in the welding process, they can always adjust the speed. The controller uses the most advanced technology to control, damage is small, can be realized and welding positioner linkage. The controller's anti-electromagnetic interference design, high-frequency interference can be avoided when welding, 0-36 degree rotation with motor driven rotary gear size, stable rotation, 0-90 degree flip function uses worm reversing mechanism, and with self-locking feature, not easy to loose after fixed!