High-Speed Motor with Amorphous Core CITIZEN MICRO/CITIZEN CHIBA PRECISION/CITIZEN ELECTRONICS

Applications for;
Medical and healthcare equipment
UAV / drones
Aerospace industry
Industrial robots and precision equipment
Research and analytical instruments

Target for;
Equipment manufacturers and research institutes requiring high-speed rotation and high efficiency
Design and development engineers facing challenges in miniaturization, weight reduction, and energy saving
Users experiencing heat generation or lifetime issues during continuous operation

Spindles and drive units requiring high-speed rotation
Enclosed equipment with strict thermal constraints
Analytical and inspection instruments designed for long-term continuous operation
Compact and lightweight modules / units
Next-generation equipment where low power consumption and high efficiency are critical

1. Significant Reduction of Iron Loss with Amorphous Core
An Fe-based amorphous alloy is used as a laminated motor core.
Its non-crystalline structure significantly reduces magnetic hysteresis loss, greatly suppressing iron loss during high-speed rotation.
Compared with conventional electrical steel cores, heat generation at high-speed operation is substantially reduced.

2. High-Speed Rotation with High Torque
Reduced heat generation expands the continuous operation range of the brushless motor.
Even at ultra-high speeds of 75,000 rpm, high torque is maintained.

3. High Efficiency and Energy-Saving Design
Reduced iron loss and heat generation directly improve motor efficiency.
High output performance with lower power consumption makes this motor ideal for energy-saving and sustainability-conscious equipment.

4. Proprietary Manufacturing Technology for Difficult-to-Machine Materials
The “thin, hard, and brittle” amorphous alloy is successfully commercialized as a motor core using Citizen Electronics’ proprietary press forming and lamination technologies.
Stable mass production of high-performance materials is another key advantage.