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ColumnExplanation of Micro-Motor Technology
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In this column, engineers from C.I. Takiron share their expertise on micro motors (coreless motors, brushless motors, and gearheads). We hope this information will assist you in selecting motors for a wide range of applications, including medical devices, industrial tools, and optical equipment.

This guide provides a detailed explanation of the technical considerations for motor selection, aimed at product development engineers and design engineers. We address common questions such as, “I don’t know which motor to choose,”and “I want to understand the difference between coreless and brushless motors.”

  • Coreless Motors: Cogging-Free, High-Response Characteristics and Applications in the Medical and Optical Fields
  • Brushless Motors: Mechanisms Behind Long Service Life and High Efficiency, and Differences from Brushed Motors
  • Gearheads: Principles of Reduction Ratios and Torque Amplification, and Applications in Industrial Equipment
2026/05/13
MOTOR TORQUE CALCULATION: HOW TO CALCULATE IT AND APPLY IT TO MOTOR SELECTION

When performing motor selection, calculating torque is an essential step. Torque is a physical quantity that represents the magnitude of the force required to rotate an object around an axis. It is closely related to a motor’s output and rotational speed, and an incorrect calculation may prevent the equipment from operating properly. Conversely, selecting a motor with excessive specifications can lead to increased costs and space constraints, so caution is required. This article explains the basic definition of torque and the proper use of units, as well as how to apply the calculation formula “T = 9550 × P/N,” which uses output and rotational speed.We have compiled practical information ranging from the concepts of load torque and safety factors to…

2026/04/27
WHAT IS RATED OUTPUT? ESSENTIAL KNOWLEDGE FOR MOTOR SELECTION

“Rated output” is a term that always appears in catalogs for motors and power supply equipment. While it is an important metric for product selection, surprisingly few people may fully understand the difference between rated output and maximum output or power consumption. Rated output is a standard value indicating the output performance of the equipment guaranteed by the manufacturer. Selecting equipment without a proper understanding of this value can lead to problems such as failure due to overload, overheating, or failure to achieve the expected performance. Especially in product development involving compact motors, a proper understanding of rated output is the first step toward ensuring reliability. In this article, we will explain everything from the basic definition of rated output…

2026/04/27
WHAT IS OVERCURRENT? A COMPREHENSIVE GUIDE TO ELECTRICAL PROBLEMS, FROM CAUSES TO SOLUTIONS

Many electrical issues in factories and offices—such as circuit breakers tripping suddenly or equipment shutting down—are caused by “overelectric current.” If left unaddressed, this can lead to serious accidents such as wiring damage or electrical fires. Particularly in facilities using industrial equipment or motors, equipment shutdowns caused by excessive electric current can affect the entire production line and potentially result in significant economic losses. For development engineers and facility managers, correctly understanding the causes of overelectric current and implementing appropriate countermeasures is essential for maintaining equipment safety and uptime. This article provides a comprehensive explanation of practical information, ranging from the basics of overcurrent to its causes and specific countermeasures.     Supervised by: C.I. TAKIRON Corporation Electronic Devices Sales…

2026/04/24
What Is Back-EMF? Explaining Its Impact on Motors and Effective Countermeasures

When using inductive loads such as motors and relays, the back-EMF generated the moment the electric current is interrupted can cause serious damage to power supplies and control circuits. Appropriate countermeasures against back-EMF are essential, particularly in fields that require high reliability, such as medical equipment and industrial equipment. By correctly understanding the principles behind back EMF and grasping its specific effects on motors and power supplies, you can incorporate effective countermeasures from the design stage. To achieve safe and reliable product designs, let’s deepen our understanding of back EMF.   Supervised by: C.I. TAKIRON Corporation Electronic Devices Sales Group This article has been supervised based on the advanced technical expertise and insights we have cultivated since our founding in…

2026/04/24
CAUSES OF MOTOR HEAT GENERATION AND SOLUTIONS | EXPLAINING EFFECTIVE PREVENTIVE MEASURES

Motors are indispensable in manufacturing lines and Industrial equipment, but heat generation during operation is an unavoidable phenomenon. However, excessive heat can shorten a motor’s lifespan and, in the worst cases, lead to serious problems such as malfunctions or fires. Motor heat generation is caused by losses such as copper loss, iron loss, and mechanical loss, each of which requires appropriate countermeasures. This article provides a comprehensive explanation of everything engineers need to know, from the mechanisms behind heat generation in motors to troubleshooting methods and effective preventive measures to stop heat generation before it happens. Through proper thermal management, we can enhance motor safety and durability and ensure the stable operation of equipment.   Supervised by: C.I. TAKIRON Corporation…

2026/04/24
WHAT ARE MOTORS OF HIGH EFFICIENCY? HOW THEY ACHIEVE ENERGY SAVING AND THEIR BENEFITS

In today’s world, where reducing electricity consumption is a priority, motors of high efficiency are gaining increasing attention. High-efficiency motors are a technology that contributes to energy saving and cost reduction by efficiently converting electrical power into mechanical power. In this article, we will provide a detailed explanation of the basic mechanisms and types of high efficiency motors, as well as the benefits and considerations when implementing them. Furthermore, we will introduce the features of Takiron CI’s Coreless motors and Brushless motors as options for improving efficiency in compact motors. *Please note that our company does not handle motors of high efficiency.   Supervised by: C.I. TAKIRON Corporation Electronic Devices Sales Group This article has been supervised based on the…

2026/04/24
A COMPREHENSIVE GUIDE TO THE RELATIONSHIP BETWEEN MOTOR VOLTAGE AND PERFORMANCE | ACHIEVING ENERGY-EFFICIENT DESIGNS WITH LOW-VOLTAGE DRIVE

In product development involving motors, a proper understanding of the relationship between voltage and motor performance is the foundation for efficient motor selection and design. How do the motor’s speed and torque change when the applied voltage is varied, and how do these relate to electric current? Without a grasp of these fundamental characteristics, it is impossible to determine motor specifications that meet the product’s performance requirements. In recent years, in particular, interest in motors that operate stably even at low voltages has been growing, driven by increasing demand for battery-powered products such as IoT devices and portable medical equipment. In this article, we will provide a technical explanation of the relationship between motors and voltage, followed by an introduction…

2026/04/06
Causes of Motor Noise, Countermeasures by Type, and How to Choose Low-Vibration Motors

In manufacturing facilities and equipment operations, sudden abnormal noises from motors can lead to serious issues such as equipment shutdowns and product defects. These noises vary widely—including “squeaking,” “grinding,” and “hissing”—and each has a different cause. Sources range from mechanical factors like bearing wear, insufficient lubrication, and debris ingress to electrical noise. In this article, we will explain the main causes of motor noise by type and introduce specific countermeasures. Furthermore, for engineers considering the purchase of new motors, we will provide a detailed explanation of the characteristics of coreless motors—which help prevent noise issues before they occur—as well as their advantages in terms of low vibration and low noise.   Supervised by: C.I. TAKIRON Corporation Electronic Devices Sales Group…

2026/04/06
What Are Small Motors? A Comprehensive Guide for Engineers on Types, Applications, and Selection Criteria

In today’s world, where products are required to be both compact and high-performance, small motors are widely used in a variety of fields, including medical devices, industrial equipment, and optical instruments. However, with so many types of small motors available, each with different characteristics, selecting the optimal motor is no easy task. In this article, we will clarify the definitions and classifications of small motors and present application examples by use case. Furthermore, we will explain the specifications to check during selection and the benefits of adoption, providing engineers with practical knowledge to find the small motor best suited to their company’s requirements.   Supervised by: C.I. TAKIRON Corporation Electronic Devices Sales Group This article has been supervised based on…

2026/04/06
How Do Motors Work? An Explanation from Operating Principles by Type to Industrial Applications

A motor is a device that converts electrical energy into rotational motion and is used in a wide range of fields, including medical equipment, optical devices, and industrial tools. When selecting a motor, understanding the basic operating principles provides the basis for determining which product is best suited for your application. Since the structure and characteristics vary depending on the type—such as DC motors, brushless motors, and coreless motors—it is essential to understand the differences between them. This article explains the basic structure and rotational principles of motors, the characteristics of major motor types, and key selection criteria for industrial applications. We hope this serves as a reference for engineers responsible for motor selection in product development, providing a technically…