シチズンマイクロ List of Products and Services

We would like to introduce the φ8 coreless motor 'SCR8-17XX' handled by Citizen Micro Co., Ltd. Thanks to excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. The number of commutator segments is 5, and the brushes are made of precious metal. Please feel free to consult us when you need assistance. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brushes: Precious metal ■ Bearings: Sleeve ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 4.5g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ12 coreless motor 'SCR12-18XX' handled by Citizen Micro Co., Ltd. Thanks to excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. The bearing is a sleeve type, and the weight is 10.4g. Options such as winding changes and harnesses are also available, so please feel free to consult with us. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brush: Precious metal ■ Bearing: Sleeve ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 10.4g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ12 coreless motor 'SCR12-26XX' handled by Citizen Micro Co., Ltd. The precious metal brushes utilize a unique longevity technology. The thrust play is ≦0.3mm, and the weight is 15.4g. Additionally, it is possible to combine magnetic and optical rotary encoders, as well as various planetary and spur gears. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brushes: Precious metal ■ Bearings: Sleeve ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 15.4g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ13 coreless motor 'SCR13-20XX' handled by Citizen Micro Co., Ltd. You can choose between precious metal brushes and graphite brushes. The bearings are sleeve type, and the magnets are made of neodymium. Thanks to excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. 【Technical Data】 ■ Number of commutator segments: 5 (Option: 7) ■ Brushes: Precious metal (Option: Graphite) ■ Bearings: Sleeve ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 13.6g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ13 coreless motor 'SCR13-28XX' handled by Citizen Micro Co., Ltd. The brushes use precious metals, and the magnets are made of neodymium. It is possible to combine magnetic and optical rotary encoders, as well as various planetary and spur gears. Please feel free to consult us when you need assistance. 【Technical Data】 ■ Number of commutator segments: 5 (Option: 7) ■ Brushes: Precious metal (Option: Graphite) ■ Bearings: Sleeve ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 20.4g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ16 coreless motor 'SCR16-25XX' handled by Citizen Micro Co., Ltd. Thanks to excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. The number of commutator segments is 5, and the thrust play is ≦0.3mm. Options such as winding changes, dual shaft, and harnesses are also available. Please feel free to consult us when needed. 【Technical Data】 ■ Number of commutator segments: 5 (Option: 9) ■ Brush: Precious metal (Option: Graphite) ■ Bearing: Sleeve (Option: Ball) ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 24.3g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ16 coreless motor 'SCR16-35XX' handled by Citizen Micro Co., Ltd. It is possible to combine magnetic and optical rotary encoders, as well as various planetary and spur gears. The number of commutator segments is 5 (optional: 9), and the weight is 36.3g. Please feel free to consult us when needed. 【Technical Data】 ■ Number of commutator segments: 5 (optional: 9) ■ Brushes: Precious metal (optional: graphite) ■ Bearings: Sleeve (optional: ball) ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 36.3g *For more details, please refer to the related links or feel free to contact us.

Introducing the φ17 coreless motor 'SCR17-25XX' handled by Citizen Micro Co., Ltd. It uses precious metals for the brushes and neodymium for the magnets. The thrust play is ≦0.3mm, and the weight is 30.0g. Customization is available according to your needs, including winding changes, ball bearings, shaft length, dual shafts, and harnesses. 【Technical Data】 ■ Number of commutator segments: 5 (Option: 9) ■ Brushes: Precious metal (Option: Graphite) ■ Bearings: Sleeve (Option: Ball) ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 30.0g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ17 coreless motor 'SCR17-35XX' handled by Citizen Micro Co., Ltd. It features a unique long-life technology for precious metal brushes. The number of commutator segments is 5, and the weight is 41.4g. Options such as winding changes, dual-shaft, and harnesses are also available, so please feel free to consult with us. 【Technical Data】 ■ Number of commutator segments: 5 (Option: 9) ■ Brush: Precious metal (Option: Graphite) ■ Bearing: Sleeve (Option: Ball) ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 41.4g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the coreless motor 'SCR18-37XX' with a diameter of φ17.55, handled by Citizen Micro Co., Ltd. Thanks to our excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. The number of commutator segments is 5, and the weight is 42.8g. Options such as winding changes, dual-shaft configurations, and harnesses are also available, so please feel free to consult with us. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brush: Graphite ■ Bearing: Sleeve (Option: Ball) ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 42.8g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ21 coreless motor 'SC21-37XX' handled by Citizen Micro Co., Ltd. With excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. The number of commutator segments is 5, and the weight is 68.5g. Options such as winding changes, dual-shaft configurations, and harnesses are also available, so please feel free to consult with us. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brush: Graphite ■ Bearing: Sleeve (Option: Ball) ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 68.5g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ24 coreless motor 'SC24-32XX' handled by Citizen Micro Co., Ltd. Thanks to excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. The thrust play is ≦0.3mm, and the weight is 78.8g. Options such as winding changes, dual-shaft configurations, and harnesses are also available, so please feel free to consult with us. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brushes: Graphite ■ Bearings: Sleeve (Option: Ball) ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 78.8g *For more details, please refer to the related links or feel free to contact us.

Introducing the φ10 coreless motor 'SCR10-17XX' handled by Citizen Micro Co., Ltd. This motor adopts a unique long-life technology for precious metal brushes. It can be combined with the gear head "Planetary φ10mm IG-10V." Options such as winding changes, dual-shaft, and harnesses are also available, so please feel free to consult us. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brush: Precious metal ■ Bearing: Sleeve ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 7.4g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ10 coreless motor 'SCR10-25XX' handled by Citizen Micro Co., Ltd. It can be combined with the gear head "Planetary φ10mm IG-10V." The brushes use precious metals, and the thrust play is ≦0.3mm. Thanks to excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brushes: Precious metal ■ Bearings: Sleeve ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 10.7g *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the φ12 coreless motor 'SCR12-13XX' handled by Citizen Micro Co., Ltd. It can be combined with the gear head "Spar φ12mm RA-12RB." Thanks to excellent precision machining technology and unique winding technology, we have achieved a compact and high-output design. The weight is 7.0g, and we have adopted a unique longevity technology for the precious metal brushes. 【Technical Data】 ■ Number of commutator segments: 5 ■ Brush: Precious metal ■ Bearing: Sleeve ■ Magnet: Neodymium ■ Thrust play: ≦0.3mm ■ Weight: 7.0g *For more details, please refer to the related links or feel free to contact us.

A "DC coreless motor" is a type of motor that has no core (iron core) in the rotor (rotating part) and features coils wound in a cup shape, with cylindrical magnets placed inside the rotor. This document provides a detailed introduction to the DC coreless motors handled by Citizen Micro. Thanks to excellent precision processing technology and unique winding techniques, we have achieved compactness and high output. In addition to standard catalog products, customization according to customer requests is also possible. We invite you to read on. [Contents] ■ Features of DC coreless motors ■ Citizen Micro's DC coreless motors *For more details, please refer to the PDF document or feel free to contact us.

In this document, we introduce "DC motors." Motors are classified into various types based on their structure and other factors. Among them, DC motors are those that operate on direct current power, such as batteries like dry cells. Citizen Micro's products (DC motors, gearheads, encoders) are based on ultra-precision processing technology cultivated in the manufacturing of watch components, and we offer a lineup of small-sized motors (φ40mm or less). We encourage you to read through it. *For more details, please refer to the PDF document or feel free to contact us.

A motor is a device that converts electrical power into mechanical power, also known as an electric motor, which generates mechanical energy using electrical energy, permanent magnets, and wires. This document introduces the operating principles of DC motors, accompanied by illustrations. Our extensive lineup of motor products, which includes various gear reducers and rotary encoders designed and manufactured in-house, is utilized in various fields such as medical, industrial, optical, and robotics, where miniaturization is required. Furthermore, we also offer customized products developed in collaboration with customers to meet their needs (such as compact motor units). Please feel free to download and take a look. *For more details, please refer to the PDF document or feel free to contact us.

This document introduces the control of DC motors. It includes a wealth of information on topics such as "control by resistance," "brake operation (short-circuit brake)," and "bidirectional drive of DC motors using transistors." Additionally, it provides detailed explanations on "PWM control (Pulse Width Modulation)" and "electrical noise countermeasures." Please take a moment to read it. 【Contents】 ■ Control by resistance ■ Brake operation (short-circuit brake) ■ Bidirectional drive of DC motors using transistors ■ PWM control (Pulse Width Modulation) ■ Electrical noise countermeasures *For more details, please refer to the PDF document or feel free to contact us.

This document explains the procedure for selecting motors and gear reducers based on the basic parameters requested by customers. It provides detailed explanations on "motor output," "voltage and size," and "gear reducer selection." To make an appropriate selection, it is necessary to consider the power supply, control, operating conditions, etc., and choose from coreless, cored, or brushless motors. Please feel free to download and take a look. [Contents] ■ Selection from Motors - Motor output - Voltage and size - Gear reducer selection ■ Selection from Size - Overview selection based on size - Gear ratio selection *For more details, please refer to the PDF document or feel free to contact us.

This document introduces the characteristics of DC motors. It includes various specifications such as the maximum efficiency (%) which is the maximum value in the input-output ratio, as well as the mechanical time constant (ms) and torque constant (mNm/A). Generally, when the supply voltage of a DC motor is constant, the T-N (torque-speed) and T-I (torque-current) characteristics can be represented by two straight lines. Please feel free to download and take a look. [Contents (partial)] ■ Rated voltage (V) ■ No-load speed (min-1) ■ No-load current (mA) ■ Starting torque (mNm) ■ Starting current (mA) *For more details, please refer to the PDF document or feel free to contact us.