8 Pole AlNiCo Rotor Magnet
Alnico rotor magnets are designed with multiple poles; each pole alternates in polarity. The hole in the rotor is designed for mounting onto shafts. They are excellent for use in synchronous motors, dynamos, and air turbine generators.
Physical Properties of Cast Alnico
Curie Temperature (℃)
Max. Operating Temperature (℃)
Relative Recoil Permeability (μrec)
Saturation Field Strength (kOe, kA/m)
Temperature Coefficient of Br (%/℃)
-0.025 ~ -0.02
Temperature Coefficient of iHc (%/℃)
+0.01 ~ +0.03
AlNiCo Rotor Magnet
Alnico rotor magnets are made with Alnico 5 material and have a maximum temperature of approximately 1000°F.
They are supplied un-magnetized unless otherwise requested. Magnetization after assembly is required to gain the full benefits of these magnets.
Alnico magnets, cast and sintered, are finished ground using abrasive grinding to produce the final shape and tolerance. Once ground the material is a shiny metallic finish. These materials are brittle and cannot be machined or drilled.
We provide a magnetization service for assemblies incorporating these magnets. We can normally magnetize them within one working day of receipt.
Packaging & Shipping
1. By Sea: As the magnets have strong attraction and we will use the spacer to apart the magnets each other in case people will be hurt when taking it out. Then, they will be packed in a white box of pieces each, several boxes to a carton. (Detailed package quantity should be made upon the real products).
2. By Air: If the goods will be shipped by air, all the magnetic should be degaussed and we will use the Iron sheet to shield.