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Guide About Magnets for Motors

What are motors?

Motors are actually electrical machines or devices which can transform or convert electrical energy to mechanical powers. Motor is machine which with the help of electricity gives power to vehicle or to any other device to move or to perform certain duty or task. We will discuss thoroughly all the types and shapes of magnets that are used in motors and most importantly we will also study the inventory of magnets motors.

Example: cars have electric motors. Car batteries are responsible for the rotation of wheels or motion of car. A food processor has also the same logic.

Historical context :

Faraday, in 1822, was the first one who worked in magnetic rotation. He created the first electric motor, by transforming electric energy into mechanical energy with the help of mercury bath.


What are magnets motors?

Magnets for motors, which are also called as magnetic motors, are calculated to produce spinning or wheeling with the help of permanent magnets in stator and rotor without the help of external energy supply. It is a type of perpetual motion machine.

How does it work?

Permanent magnet attracts electromagnetic coil towards itself and because of this attraction the motor

Starts rotating. If magnetic qualities of wire get disconnected by the removal of electrical power the motor will stop working or rotating. Motor driver can control the rotation and motion of permanent magnet motors. Motor driver manage the electricity given to motors for the rotation and motion purpose.

Magnets for motors:

Magnets that are used in permanent magnet motors are sintered magnets and bonded magnets.

Basic types of magnets for motors:

Basically there are 3 types of magnets used in motors.

1) Permanent magnets

2) Temporary magnets

3) Electromagnets

What types of magnets are the strongest ones?

Neodymium (Nd) magnets are known to be the world's strongest magnets. They are made up of magnetic material made from an alloy of neodymium, iron and boron and thus form Nd2Fe14B structure, that’s why they are called the strongest magnets amongst them.

Does magnet affects motor?

Yes it is pretty obvious that if we add a stronger magnet to the motor it will produce high magnetic force generated per Amp of current flow.

How much current can one magnet produce?

Magnet can produce or generate voltages from 69.5 to 223.7 V and frequencies range from 33.5 to 50.9V at rotational speeds of 2000 t0 3000rpm.

2 main types of Magnets for motors:

Magnet motors is divided into two main types which are given below.

1) Surface permanent magnet motors

2) Internal permanent magnet motors

The main difference in these two types of motors is that surface permanent magnet motors have magnet on the outer side of the rotor while internal permanent magnet motors deposit magnet on the inner side of the rotor.

Types of magnet motors:

Following are the main types of magnet motors.

  1. A) Alnico
  2. B) Ferrite
  3. C) Samarium cobalt
  4. D) Neodymium iron boron

Here we will discuss these four types of magnets that are used in motors.

  1. A) Alnico:

At present, Alnico magnets factories are found in Japan, The United States, Europe,  Russia and china. This is the initial and primary type of the permanent magnet which is used generally and extensively. And its composition operation and technology are the mature ones as compare to others.

  1. B) Ferrite:

Ferrite magnets have roots back in 1950s. In 1970s, they began to use permanent ferrite in large quantities, producing strontium ferrite. Ferrite is very popular to use because it does not have properties of oxidization, having low Curie temperature and high cost. That’s why it’s very beneficial to use.

  1. C) Samarium cobalt magnet:

Samarium cobalt magnet has very stable properties as compare to others. Samarium magnets are permanent magnets with superb and outstanding magnetic properties which have emerged in the midmost of the 1960s. Samarium cobalt magnets are perfectly good for the making of motors. Nevertheless, because of its high price , they are mostly used only in the research and the development of aviation,  aerospace,  weapons,  and other military motors and high performance motors in high technology fields where high prices doesn't matter at all.

  1. D) NdFeb magnets:

NdFeb magnets are fusion of neodymium and iron oxide. Modern industry and electronic technology make use of NdFeb permanent magnets. Because of the presence of neodymium and iron in NdFeb magnets, they are easy to rust. The best solution of corrosion of this magnet is surface chemical passivation. It can lessen the size, weight and thickness of equipment by its nature like

Instrumentation, electrouacostic motors and magnetic separation and magnetization.

Shapes of neodymium magnets:

There are different shapes of permanent magnets. Some of them are given below.

1) Neodymium block magnets

2) Neodymium ring magnets

3) Neodymium disc magnets

4) Neodymium cylinder magnets

5) Smco disc magnets

6) Adhesive backes magnets

7) Neodymium segment magnets

8) SmCo arc magnets

9) Small magnets

10) Counter sunk magnets

11) Step motor magnets

12) Neodyme magnet

13) High temperature magnets

14) SmCo ring magnets

15) N42UH magnets


At this final stage of the article it can be concluded easily that Magnets for motors plays essential role in cars, or in many different usages in daily use. The MAG Spring which is green magnetic solution expert consists variety of magnet which has different motors in it. They have highest features from Mag Spring. The main key qualities which can be considered are remanence, intrinsic coercivity, and its curie temperature. They offer different kind of offers with a huge percentage off in it; one can give custom order also with delivery service available.

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