Φ25mm Micro Joint Actuator | Axial Flux Motor with Cycloidal Reducer for Robotics

Product Introduction

The Φ25mm Micro Joint Actuator is a compact integrated motion solution designed for robotic joints and other precision motion applications. Combining an axial-flux motor, miniature cycloidal reducer, and non-contact absolute magnetic encoder, it integrates power generation, speed reduction, and position feedback into a compact unit.

With a diameter of 25 mm, the actuator is developed to balance torque output, positioning precision, response performance, and overall system cost. Its continuous torque reaches up to 1150 mNm, while the initial torque reaches up to 1800 mNm. Supporting CAN FD communication and a 12–18 V operating voltage range, it is suitable for compact robotic systems requiring responsive and controllable joint movement.

Developed by VAXOR, this micro joint actuator is designed for collaborative robots, biomimetic robotic joints, and intelligent equipment where installation space, weight, and motion performance are important design considerations.

Key Product Features and Advantages

1. Compact Φ25mm Integrated Structure

• 25 mm actuator diameter for space-constrained motion systems.

• Integrates the motor, miniature cycloidal reducer, and encoder.

• Helps simplify the mechanical arrangement of compact robotic joints.

• Suitable for lightweight and compact robotic mechanisms.

2. Axial-Flux Motor Technology

The actuator adopts an axial-flux motor design to support high torque density within a compact structure.

• Designed for compact motor integration.

• Supports high-performance micro-drive applications.

• Combines motor technology with a miniature reduction mechanism.

• Suitable for robotic systems requiring compact power units.

3. Miniature Cycloidal Reducer

The integrated cycloidal reducer provides mechanical speed reduction and torque transmission for joint applications.

• Available gear ratios: 30 and 50.

• Supports different output requirements through ratio selection.

• Designed for compact robotic joint structures.

• Helps balance torque capacity and installation dimensions.

4. Non-Contact Absolute Magnetic Encoder

The integrated absolute magnetic encoder provides position feedback without relying on contact-based sensing components.

• Absolute magnetic encoder configuration.

• Supports position feedback for controlled joint movement.

• Integrated into the compact actuator assembly.

• Suitable for precision motion control systems.

5. CAN FD Communication

The actuator supports CAN FD communication for integration into compatible robotic control architectures.

• CAN FD communication interface.

• Suitable for networked robotic joint control.

• Supports integration with compatible motion controllers.

• Helps facilitate communication within intelligent equipment systems.

6. High Torque Output for Compact Applications

The actuator delivers continuous torque up to 1150 mNm and initial torque up to 1800 mNm, providing output capability for compact robotic joints.

Actual performance depends on operating conditions, control parameters, thermal conditions, and the selected gear ratio.

Product Technical Specifications

Note: Torque and weight values are specified as ranges or maximum values in the supplied product information. Please confirm detailed operating curves, rated conditions, and configuration-specific values with the supplier.

Product Configuration and Working Principle

The Φ25mm Micro Joint Actuator combines three core components to provide an integrated drive solution:

Axial-Flux Motor

The motor generates rotational power within a compact structure, supporting the actuator's high torque-density design objectives.

Miniature Cycloidal Reducer

The reduction mechanism converts motor speed into the required output speed and torque for robotic joint movement. Gear ratio options of 30 and 50 allow selection according to application requirements.

Absolute Magnetic Encoder

The non-contact magnetic encoder provides absolute position feedback for the motion control system, supporting accurate joint positioning and coordinated movement.

Together, these components create a compact actuator assembly that reduces the need for separate motor, reducer, and encoder integration during robotic joint development.

Typical Applications

The Φ25mm Micro Joint Actuator is designed for compact motion systems and can be considered for applications such as:

• Collaborative robot joints

• Biomimetic robotic joints

• Humanoid robot mechanisms

• Compact robotic arms

• Precision motion modules

• Intelligent equipment

• Small-scale automation systems

• Robotic end mechanisms requiring integrated actuation

Application suitability should be evaluated according to required torque, speed, duty cycle, installation dimensions, thermal conditions, and control-system compatibility.

Why Choose VAXOR Micro Drive Solutions?

VAXOR was founded in 2024 and is headquartered in Suzhou, China. The company develops micro joint actuators and ultra-micro coreless motors for robotics, medical devices, precision instruments, and intelligent equipment.

1. Integrated Micro-Drive Technology

VAXOR combines axial-flux motor technology, PCB/FPCB winding, optimized electromagnetic design, and miniature reduction mechanisms to develop compact motion solutions.

2. Multidisciplinary R&D Team

The team brings together expertise in:

• Motor design

• Precision manufacturing

• Structural engineering

• Robotics control

• Intelligent manufacturing

This interdisciplinary approach supports product development from motor design and mechanical integration to motion-control implementation.

3. Engineering and Production Experience

VAXOR focuses on translating technical development into practical products, with engineering capabilities covering prototype validation, pilot production, and batch delivery.

4. Robotics and Precision Equipment Focus

The company's micro-drive technology roadmap addresses key requirements of compact motion systems, including:

• Compact installation dimensions

• High torque density

• Fast response

• Precise motion control

• High efficiency

• Consistent production performance

5. Application-Oriented Development

VAXOR products have been supplied or sampled to robotics companies, technology enterprises, and research institutions worldwide. The company focuses on providing micro-drive components for next-generation compact and intelligent machines.

Ordering and Customization Information

When selecting a Φ25mm micro joint actuator, buyers and engineering teams should confirm the following details:

• Required model: X25S-UZ/BZ30/50-MH-3

• Operating voltage: 12–18 V

• Required gear ratio: 30 or 50

• Continuous and initial torque requirements

• Encoder and position feedback requirements

• CAN FD communication compatibility

• Available installation space

• Required quantity and project development stage

For engineering evaluation or project purchasing, please provide the application scenario, joint load requirements, motion parameters, and control-system information. The VAXOR team can assist with product selection and technical communication.

Contact VAXOR for Micro Joint Actuator Solutions

For compact robotic joints requiring integrated motor, reduction, and position feedback functions, the Φ25mm Micro Joint Actuator offers a space-efficient drive configuration with axial-flux motor technology, a miniature cycloidal reducer, and CAN FD communication.

Contact VAXOR to discuss the Φ25mm Micro Joint Actuator, confirm the suitable gear ratio, and obtain further technical information for your robotics or precision motion project.