Injection Molded Bonded Ferrite Magnet Rotor Assembly

Injection molded bonded ferrite magnets have gained popularity thanks to its lower cost, flexibility in magnetization and easy assembly process. Tengye specilizes in injection molded magnet technology. Our brand for injection molded magnets is named according to the plastic magnet factory name  – JMMW.

Injection molded ferrite magnet rotor assembly

Conventional magnetic rotors are composed of a shaft and individual magnets arranged in N-S-N-S configuration. The magnets come in either arc segment or rectangular shapes. The magnets are mostly surface-mounted using adhesive. An injection molded bonded ferrite magnet, which often come in ring shape, are directly overmolded on the shaft. The ring magnet is multipole-magneitized in the mold. This process greatly increased the assembly efficiency.

automotive exhaust valve control rotor
automotive exhaust valve control rotor

Magnetization patterns of injection molded ferrite magnets

Injection molded ferrite magnets are mostly in ring shape. They are either used in rotor assemblies or as magnetic sensors. The magnetization is often multi-pole.

axially multi-pole magnetization
multipole magnetization on inner diameter
multipole magnetization on outer diameter
complex multipole magnetization
multipole skew magnetization

Application markets of injection molded bonded magnet rotor

Automotive, home appliance and industrial automation are the three main application markets of injection molded bonded magnet rotor.

About Tengye: Tengye Magnetic supplies finest permanent magnet materials and custom magnetic assemblies to world industry. We work closely with our customer from designing stage to mass production. 

Inquiry Form