The principle of permanent magnetic lifter (permanent magnetic chuck)

 The permanent magnetic lifter adopts high-energy permanent magnetic material, which generates a strong holding force in the magnetic circuit, and rotates the pole mandrel with the handle to make the lifter in the working or closed state, without external power supply for operation.
 When in working condition, the holding surface at the bottom of the jack constitutes a pair of longitudinal magnetic poles, which firmly hold the ferromagnetic material workpiece, and the holding surface is also made with a V-shaped groove, so that the plate-shaped workpiece, and can hold cylindrical workpieces
 The permanent magnet lifter is mainly used for the work of plate-shaped or cylindrical ferromagnetic materials in the lifting process. It has the characteristics of light structure, explosion-proof operation, strong holding force, safety and reliability, etc., which helps to improve the work of loading, unloading and handling operations. conditions and improve its labor productivity, so it has been widely used as a lifting tool in factories, docks, warehouses and transportation industries.