Principle: Magnetic coupling pump

Function:

The magnetic coupling consists of two magnetic rotors separated from each other by a closed rear casing. The drive magnetic rotor positioned on the motor shaft transfers the torque of the motor via a rotating magnetic field to the inner rotor enclosed in the rear casing. Depending on the pump design, the driven rotor is directly or indirectly connected with the impeller. Thus the impeller is driven without the need of a shaft seal. The pumped liquid lubricates the bearing of the pump. A static seal between the pump housing and the separate rear casing acts as a sealing element to the atmosphere.

Lutz horizontal centrifugal pumps with magnetic coupling are running leakage- and maintenance-free.

Exploded view: