Micro DC Gear Motors – Definition & Classification

Definition

A micro Dc Gear Motoris a transmission device that integrates a Dc Motor with a gear reducer. The gearbox converts the motor’s high-speed, low-torque output into a low-speed, high-torque output, making it suitable for applications that require precise and stable motion.Micro DC gear motors can be categorized by gearbox type, magnetic field excitation method, and output shaft design.

Classification

1.By Gearbox Type

• Spur Gear Micro DC Gear Motor
  Features a simple structure, low cost, and relatively high efficiency. Commonly used in toys and small household appliances.
• Worm Gear Micro DC Gear Motor
  Offers a large reduction ratio and self-locking function (the output shaft does not rotate when power is off). While efficiency is lower, it is widely applied in automotive smart drives, smart home devices, and electronic products.
• Planetary Micro DC Gear Motor
  Compact in size, capable of delivering higher torque within the same volume, and offers a wide reduction ratio range with smooth transmission. Ideal for precision instruments and medical equipment.

2.By Excitation Method

• Permanent Magnet Micro DC Gear Motor
  Uses permanent magnets to generate the magnetic field, eliminating the need for additional excitation current.
• Electromagnetic Micro DC Gear Motor
  Requires an external DC power supply to energize the field windings, producing a controllable magnetic field.

3.By Output Shaft Design

• Single-Shaft Micro DC Gear Motor
  Output shaft extends from one side only; suitable for most unidirectional drive applications such as electric toothbrushes and printers.
• Dual-Shaft Micro DC Gear Motor
  Output shafts extend from both ends; used in applications that require dual transmission, such as UAV gimbals.
• Hollow-Shaft Micro DC Gear Motor
  Features a hollow output shaft for space-saving and integrated cable routing. Commonly applied in surgical robots and compact robotic systems.

Shenzhen Shunli Motor: Reliable Supplier of Micro Gear Motors

As a specialized micro DC gear motor manufacturer, Shenzhen Shunli Motor Co., Ltd. offers a comprehensive product range:

• Spur and worm gear micro motors with gearbox sizes from 10 mm to 37 mm
• Planetary gear motors with gearbox sizes from 6 mm to 57 mm
• Complete product lines covering spur, worm, and planetary gear types for diversified applications

By combining engineering expertise, strict quality control, and flexible customization, Shunli Motor has become a trusted partner for companies worldwide in industries ranging from smart home and automotive systems to robotics and medical equipment.