Injection molded magnets are made by injecting the special compound, a mixture of Nd magnet powder and high performance polymer, into the mold. These magnets cover a wide range of characteristics as isotropic bonded magents, including heat resistance and higher performance. Injection molding offers very flexible shape design as well as overmolding and insert molding with other parts for easy and reliable assemblies.

Injeciton molded magnets

Injeciton molded magnets

Features of injection molded magnets

MPCO’s injection molded magnets have a high level of magnetic properties among Nd based isotropic injection molded magnets.
Since these are isotropic in nature, any magnetization patterns can be used. This is especially advantageous to multi-pole magnetization.
Injection molding provides better dimensional accuracy and excellent serial productivity.
Thin wall thickness (minimum 0.3 mm) and complicated shapes can be produced.

Overmolded or insert molded assemblies

Overmolded or insert molded assemblies

Overmolding and insert molding with other parts, such as back yoke, hub, shaft is readily available, as well as injecting other polymer parts can be incorporated.
A high volume fraction of polyer binders provide adequate protection against corrosion without additional coating in most applications.

2 Shot technology

The 2 shot technology is a method of injection molding where two different materials are consecutively injected for form a single integral product.

2 shot technology method of injection molding

2 shot technology method of injection molding

Features of 2 shot tehcnology

Adhesive bonding or other assembly processes can be eliminated.
Higher geometrical precision (such as concentricity) can be achieved.
Manufacturing cost saving