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Knowledge Center

Effect Of Motor Design Parameters On Cogging Torque - Part 1
Cogging torque is one of the major electromagnetic sources for motor noise. Reducing cogging torque results in a quieter motor.
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Factors Affecting Magnet Aging
Various factors like the permeance coefficient (PC) value, density and saturation of the magnet will affect magnet aging.
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Improvement In Mechanical Strength Of Bonded Neo Magnets
Increase in epoxy helps to increase ring crush strength while novolac epoxy can help to improve the crush strength and stress rupture strength at elevated temperatures relative to DGEBA epoxy.
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Factors Affecting Magnet Density
Various factors like amount of lubricant, particle size distribution, type of epoxy and type of lubricant distribution process affect the magnet density.
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Causes And Effects Of Unsaturated Bonded Neo Magnet
Magnets from different magnetic material require different magnetizing energy. Bonded neo magnets need higher energy for magnetization as compared to ferrite and sintered neo magnets. Applying lower than required magnetizing field will result in an unsaturated bonded neo magnet.
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Latest Technical Developments

Salient features of the magnetizing fixture design and the evaluation on the effect of additional back iron during in-situ magnetization, the use of laminated back iron v/s solid back iron, conductor location and fixture slot shaping.
An optimally designed motor with isotropic bonded neodymium magnets helps in reducing the motor weight and volume by 50 percent to 60 percent compared with the benchmarked ferrite motor.
This paper presents a manufacturing method called Combustion Driven Compaction (CDC) for the manufacture of isotropic bonded NdFeB magnets (bonded Neo). Magnets produced by the CDC method have density up to 6.5 g/cm3 which is 7-10% higher compared to commercially available bonded Neo magnets of the same shape.