Leveraging ultra-precision gear manufacturing technology honed in CITIZEN’s watch part production, we provide a compact geared motor combining a high-response coreless motor with a reduction gear.
This combination enables high output and precise control.

We offer standard products (catalog items), semi-customization (e.g., changing output shaft length, adding various cables), and full customization (OEM).
From small prototype runs to mass production, we cater to your needs.

◆Products and Features
★Geared Motor　(A comprehensive term for combinations of gearhead and motor.)
● Features:
　High-precision control, reliability, compact size, lightweight, and long life.
　Wide selection to meet specific needs.

・Specifications: Size: φ8 to φ35
・Combination: ① Gearhead + ② Coreless Motor (+ ③ Encoder)　↓

< ① Gearhead (Planetary / Spur) >
●Features:
　Optimized design for high torque transmission and stable operation.
　Options for noise reduction and thin design, ensuring high precision and quality.
・Specifications:
　Size: φ8 to φ38, □43
　Reduction ratio: 1/4 to 1/3000
　Permissible torque: 4.90 to 1960 mNm (0.05 to 20 kg·cm)

< ② Coreless Motor >
●Features:
　Compact and high-performance motor using ultra-precision machining and proprietary winding techniques.
　High responsiveness, cogging-free, low vibration, low noise, and high-quality operation.
・Specifications:
　Size: φ8 to φ24
　Output: 0.036 to 10.2W
　No-load speed: 2480 to 16000 rpm

< ③ Encoder (Magnetic / Optical) >
●Features:
　Equipped with ultra-compact, high-performance MR sensors, offering a wide range of resolutions.
　Contributes to high-precision positioning and rotation speed control for quality performance.
・Specifications:
　Type: Incremental
　Pulses: 12 to 512 P/R
　Output format: Voltage differential, 3-channel TTL compatible

◆Application Fields
Our geared motors are utilized across various fields, harnessing their product performance.
- Medical Devices -
Radiotherapy equipment, autorefractors (keratometry), infusion pumps, clinical analyzers, medical electric injectors.
- Industrial Equipment -
Specimen transport systems, packaging machines, measurement devices, lens edgers, semiconductor testers.
- Housing Equipment -
Electric locks, window opening systems, smoke shutters, floor-blown air conditioning, compact elevators.
- Optical Equipment -
Surveillance cameras, broadcast cameras, infrared cameras, microscopes, endoscopes.
- Robotics -
Humanoids, medical, industrial, exploration, underwater cleaning robots.
- Currency Equipment -
Cash handling machines, ticket vending machines, vending machines, coin wrapping machines.
- Office Equipment -
Multifunction printers, tea dispensers, electric blinds.
- Hobbies -
Model trains, electric reels, micro mouse robots, drones.
- Other -
Observation rockets, dust masks, nailers, myoelectric prosthetics.

Links
• Standard Catalog: https://mic.citizen.co.jp/cms/micro/web/english/catalog.html
• Website: https://mic.citizen.co.jp/english/index.html