Rotor Magnets introduction：
Size: 2.200″ Dia. x 1.350″
Number of Poles: 8
Our rotor magnets are made of Alnico 5 material and supplied un-magnetized (magnetization provided after assembly).
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.
Alnico Magnet is composed primarily of Aluminum, Nickel, Cobalt, Copper and Iron. It has very good corrosion resistance and high-temperature operation. Although other materials offer greater energy and coercivity values, the high remanence and thermal stability of AlNiCo makes it the most cost-effective material for certain applications, like generator, microphone lifting, voltmeters and measuring instruments. It is widely applied in high stability fields as aerospace, military, automobile, and security system.
Alnico 5, the most widely used grade, delivers energy to a magnetic circuit more economically than any of the other Alnico grades. Alnico 8 possesses the highest coercive force of all Alnico grades, as well as excellent energy per unit volume and a low reversible temperature coefficient. It is recommended for applications exposed to strong demagnetizing fields, or where space considerations dictate a short magnetic length.
Features of alnico magnets
Achieve high Br values, high temperature stability and mechanical strength
Alnico delivers impressive flux density at an economical price. It boasts the lowest reversible temperature coefficient of any standard commercial magnet material (0.02% per degree centigrade) allowing for excellent stability over a wide temperature range. Alnico is also inherently corrosion resistant.
The most efficient utilization of Alnico magnets requires that they be magnetized after the magnet is assembled in the final magnetic circuit. Shipping the alnico magnets before magnetizing them also eliminates the need for special packaging and prevents contamination by potential contact with ferrous materials.
Packaging & Shipping
1. By Sea: As the magnets have a 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 Iron sheet to shield.
We offer a full line of cast and sintered Alnico products, including:
Rotors、 Full hollow cylinders、 C-Shaped 、Multi-pole holding magnets、Ring
Custom parts、Bar、Die-cast in aluminum、Rod、Dipped in plastisol、Horseshoe
Painted (mil-spec painting)
Cast Alnico Grades
Alnico 2、Alnico 8B、Alnico 3、Alnico 8H、Alnico 4、Alnico 8HE
Alnico 5、Alnico 9、Alnico 6、Alnico 8
Primarily custom made to your specifications, sintered Alnico magnets are available in grades 2, 5, 6 and 8B and 8H.