■ Inner Structure
■ Product Principle
A rotary motor consists of a rotor and stator. The rotor is the load itself or directly connected to the load, and is equipped with permanent magnets. The stator is fixed to the base and contains multiple coils. Based on the electromagnetic principle, energizing the coils generates a rotating magnetic field, which directly drives the permanent magnet rotor to rotate. The rotor speed is determined by the frequency of the applied current, while its position is controlled by the phase of the current.
■ Product Advantages
1. High dynamic response and compact design
Equipped with a compact rotor structure and low-inertia rotating components, the motor provides rapid acceleration and deceleration while maintaining a small installation footprint. The direct-drive structure fully utilizes servo control performance, enabling responsive rotary motion in compact automation equipment.
2. High torque density
The optimized electromagnetic design provides high torque output within a limited motor diameter, delivering strong rotary performance without significantly increasing the size of the drive system. This makes the motor suitable for applications where both compact dimensions and high dynamic performance are required.
3. Precise rotary positioning
The motor directly drives the load without a reducer or other intermediate transmission components, eliminating backlash and reducing transmission errors. Combined with high-resolution feedback, it provides accurate and repeatable rotary positioning performance.
4. Space-saving installation
By eliminating the need for a reducer, belt, and other mechanical transmission components, the motor significantly simplifies the rotary drive structure. The compact configuration helps reduce machine size and provides greater flexibility for equipment layout.
5. Low maintenance requirements
The direct-drive architecture contains fewer mechanical components subject to wear compared with conventional geared systems. With no reducer or belt transmission requiring periodic adjustment and replacement, the system can operate with reduced maintenance requirements.
Within 100mm rotary motors are designed for compact automation equipment where installation space is limited but high-performance rotary motion is still required. The small-diameter structure combines the stator, rotor, bearing, and encoder into a compact drive unit, eliminating the need for a conventional reducer and reducing the overall size of the rotary mechanism. Low-inertia rotating components provide fast acceleration and deceleration, enabling rapid response to servo commands and shorter positioning cycles. Direct-drive transmission also eliminates mechanical backlash and reduces transmission errors, supporting precise and repeatable rotary positioning. With a compact footprint, high dynamic response, and simplified mechanical structure, these motors are well suited for semiconductor equipment, electronic assembly, inspection systems, compact indexing mechanisms, and other space-constrained automation applications.

