... Magnet Synchronous Gearless Traction Machine 2.Loading:1150kg 3.Speed:1.0 ~ 4.0m/s 4.Drive: ... material, imported high-precision sealed bearings, low-speed and large torque without reducing mechanism but equipped ... magnetic synchronous door operator adopts 32-bit microcomputer 3 closed-loop server control, which has enhanced ... , the controller still runs at the same speed curve to open and close the door, ...