neodymium (rare earth) magnets are widely used for motors, one of them is voice coil motors, especially in disk voice coil motors.Voice Coil Motors (VCM), also called Voice Coil Actuators (VCA), are a very mature design that utilizes a magnet and yoke in conjunction with a coil. The coil and magnet area concentric about a common axis and there exists an engineered magnetic return path.The coil is typically connected to a mechanism which translates the coil’s linear motion into a beneficial action. For example, a conventional loud-speaker uses a voice coil motor to drive a cone which converts the coil’s oscillating motion into sound energy.
Key Benefits of a VCM – Voice Coil Actuator:
No commutation required
Low to no hysteresis
Fewer mechanical components compared to “screw-type” actuators
Linear control characteristics
High power to mass ratio
High power to volume ratio
Infinite position (Limited only by the encoder device.)
Salt Spray Test
Pressure Cooker Test
NiCuNi (Nickel Copper Nickel)
NiCu + Black Nickel
NiCuNi + Epoxy
NiCuNi + Gold
NiCuNi + Silver
Each individual layer of Nickel and Copper are 5-7 μm thick. The Gold and Silver plating layers are 1-2 μm thick.
Test results shown to allow comparison between plating options. Performance in your application under your specific test conditions may vary. Salt Spray testing conducted with a 5% NaCl solution, at 35°C. Pressure Cooker Test (PCT) conducted at 2 atm, 120°C at 100% RH.
1.The superlative strength magnets at present.
2. Used in mostly in smaller, lightweight and thinner design products.
3. The average energy product's cost is comparable to substitute the ferrite magnet.4. Prompt Delivery and Competitive Price.
Application / Models
Magnetic separator, Sensors, Wind generators, Vibration motors, DC motors, Servo motors, Linear motors, VCM, MRI, Loudspeakers, Linear actuators, drives, toys, bags, household appliances, microphone parts, transmission equipments...