A small and specialized electrical machine, commonly referred to as a micro motor, is designed to have a compact size and limited power output, typically below several hundred watts. These motors are specifically engineered for unique applications where standard motors may not be suitable. They are widely used in control systems to perform tasks such as signal detection, amplification, execution, or conversion of electromechanical signals and energy, as well as for transmitting mechanical loads. Micro motors also serve as power sources for various equipment, both AC and DC.
Micro motors come in a variety of types and models, each tailored for specific functions and environments. They can be broadly categorized into DC motors, AC motors, servo motors, stepping motors, rotary transformers, shaft encoders, tachogenerators, inductive synchronizers, linear motors, and other special-purpose motors. With over 13 main categories, these motors are essential components in modern automation and precision engineering.
The naming convention for micro motors often includes a code that provides detailed information about the motor's design and specifications. The first letter usually indicates the shape: "R" for round, "F" for flat, and "S" for square. The second letter denotes the type of brush used—such as metal brushes (E, A, U), metal plate fork brushes (F, D), or carbon brushes (C, K, H, S, T). The third number represents the rotor diameter, the fourth number refers to the length of the magnet or housing, and the fifth number specifies the number of rotor slots, with "0" indicating three slots, "5" representing five slots, and "3" denoting twelve slots.
In terms of specific motor series, the SZ series DC servo motor is known for its high performance, offering power ratings from 20W to 600W, voltages of 24V, 110V, and 220V, torque ranging from 0.050mN.m to 2867mN.m, and speeds of 1500r/min, 3000r/min, and 6000r/min. It supports multiple mounting methods, including A1 foot mounting and A3 flange mounting, and is available in base diameters of 55mm, 70mm, 90mm, 110mm, and 130mm.
Another popular series is the ZYT series DC permanent magnet motor, which offers higher power ranges up to 1200W, similar voltage options, and even greater torque capabilities, reaching up to 3822mN.m. This motor is also available in the same mounting configurations and sizes as the SZ series.
For applications requiring lower speeds and higher torque, the J-SZ (ZYT)-PX series DC geared motor is ideal. It provides power from 20W to 1200W, with speeds ranging from 2r/min to 750r/min. It features a wide range of reduction ratios, including 4, 6, 16, 36, 64, 216, 256, and 1296, making it suitable for precise motion control. This motor also supports A1 and A3 mounting styles and is available in the same base sizes.
Whether in disk drives, copiers, CNC machines, or robotics, micro motors play a crucial role in enabling efficient and accurate mechanical operations. Their versatility and adaptability make them indispensable in today’s technological landscape.
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