Product name: Micro Motor rotors
Composition: rotor magnetic ring 1, rotor shaft 1, sleeve-shaped skeleton 1
Magnetic ring material: bonded neodymium iron boron, surface epoxy resin black electrophoresis; rotor shaft material: SUS420; sleeve frame material: aluminum alloy
Rotor concentricity requirement: below 0.02mm
Rotor runout requirement: below 0.005mm
Rotor dynamic balance requirements: below 150mg (speed 7000)
Rotor magnetic flux: outer diameter 4-pole magnetization, surface magnetic field intensity: more than 2500 Gauss
Application: Ultra-high-speed brushless DC motor rotor, more than 100,000 revolutions per minute (100,000 rpm), working in a high temperature environment of 100°C for 2 hours, demagnetization does not exceed 2%, running in a 60°C environment for 72 hours, the motor speed and torsion are stable obvious change.
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