Arc Magnets

Arc magnets are used for PM-motors in various desings and performance. Motors with lower requirements of high coercitivity and Remance but cost sensitive are normally designed for use of Sintered Hard Ferrite material. For more demanding performance sintered rare eart magnets such as NdFeB or SmCo.

High graded NdFeB has higher  Coercivity (Hcj) and Energy product (BHmax) and SmCo has outstanding maximum working tempearature, low temperarure coefficient and superiour corrosion resistance. Where shape if of more concern or price in comparison with the sintered Rare Earth materials compression bonded NdFeB is a usable option.