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Elevator Driving System Magnet
                                  Permanent Magnet for Gearless PM Synchronous Traction Machine

Using high-performance rare earth permanent magnet materials, no carbon brushes, permanent magnet synchronous gearless traction machine can drive efficiency up to 90%. It effectively improves the energy efficiency with energy saving, environmental protection, low speed and high torque characteristics. Gearless traction machine can be divided into the inner rotor and outer rotor based on the rotor structure, while permanent magnets stick to these rotors.

Due to the special work environment of the elevator, it is possibility that magnet on the motor will demagnetize after prolonged use, for example:
1. Unqualified rare earth permanent magnet
2. Unsaturated magnetization
3. Motor working temperature exceed magnet permitted range
4. Long oxidation of rare earth permanent magnet

In order to avoid the above situation occurs in practice, the elevator magnet needs careful and meticulous design and manufacturing. Magnet design also needs to consider magnet size, magnetic properties and the worst working conditions of motor. It is better that the magnetic properties are higher than the practical requirement. Before installation, rare earth permanent magnets should pass high temperature aging test and salt spray test.

For a long time, elevator manufacturers use bonding process to fix permanent magnets on the rotors. Theoretically, using glue and magnetic force, it could be okay. But In some cases magnets will come off because of high temperature or other reasons. To reinforce magnet on the rotor and reduce the problems caused by magnet dropping, it can combine screws and adhesive binding by making a countersunk on the basis of simple block or arc magnet.

China magnets source material Limited supplies elevator hoisting machine magnet. All our motor magnets are in line with ROSH environmental requirement, welcome to inquiry.

    Relative information:

  1. Grade of sintered NdFeB Magnet
  2. Grade of Bonded NdFeB Magnet
  3. Magnet Coating
  4. Magnetization direction
  5. Motor Magnet
  6. 8 Factors to Affect the Magnetic Force of Permanent Magnet
  7. Frequently Asked Questions About Bonded Magnet Materials
  8. What Material to Choose? - Neodymium Magnet, SmCo, AlNiCo, Ferrite
Contact information
China Magnets Source Material Limited
Tower B, Qiongzhu Building,
Huawang Rd,Longhua District,
Tel: +86 755 28174720
Fax: +86 755 28174720