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Direct Drive Rotary Motor-DDRI-224-042

Motor Size ；224(D)*042(H)mm Cont Torque ；9.9 N.m Peak Torque ；30N.m Cont/Peak CUR ；2.3/7A-rms

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DDRI Series (Internal Rotor Motor)

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DDRI-224-042 Direct Drive Rotary Motor
High Torque · Zero Backlash · Precision & Stability
Ⅰ. Product Overview
The DDRI-224-042 from W-Robot is a high-performance direct drive rotary motor engineered for precision rotational motion, fast dynamic response, and long-term reliability. By removing mechanical transmission components such as gears or belts, the DDRI-224-042 achieves zero backlash, ultra-smooth motion, and maintenance-free operation, making it ideal for automation systems that demand high precision and rigidity.
This model features a large hollow shaft design, enabling easy cable and tubing routing, compact system integration, and excellent torque density. Its advanced magnetic circuit structure and low cogging torque design ensure stable rotation, even during ultra-slow or micro-step motion.
The DDRI-224-042 represents W-Robot’s advanced engineering in direct-drive technology—delivering high torque, accurate feedback, and minimal maintenance for today’s intelligent manufacturing equipment.
Ⅱ. Technical Features
High Torque Density: Compact design with powerful torque output suitable for heavy-duty rotational applications.
Zero Backlash: Direct drive eliminates mechanical play, providing precise and repeatable positioning.
High-Resolution Encoder: Built-in feedback system ensures ultra-accurate motion control and smooth rotation.
Hollow Shaft Design: Central hole allows integration of cables, air lines, or sensors—simplifying equipment design.
Low Cogging Torque: Optimized electromagnetic design for smooth motion even at low speeds.
Maintenance-Free Operation: No wear-prone transmission parts—ensuring long service life and low operating cost.
Compact Integration: Can be easily embedded into rotary tables, indexing devices, and precision machine tools.
Ⅲ. Application Fields
The DDRI-224-042 is suitable for advanced automation and precision positioning systems such as:
Semiconductor manufacturing and wafer handling systems
Precision rotary indexing tables
Robotics and collaborative arms
Optical inspection and measurement equipment
Machine tool rotary axes
High-speed printing or packaging equipment
Its combination of high torque, precise feedback, and compact form enables engineers to design next-generation automation systems with outstanding reliability and accuracy.
Ⅳ. Model Selection & Customization
W-Robot offers full customization support for DDRI series rotary motors:
Torque and speed adjustments based on application needs
Encoder resolution and feedback signal compatibility (absolute/incremental)
Hollow shaft size and mechanical interface customization
Integration with servo drive or W-Robot control system
Cooling method options (natural or forced air)
CAD drawings and detailed technical data available upon request
Ⅴ. Product Advantages
Direct-drive system with zero backlash for perfect rotational accuracy
High torque and compact footprint suitable for dense automation setups
Hollow shaft simplifies cable management and reduces equipment complexity
Smooth and quiet operation ideal for laboratory or precision manufacturing environments
Maintenance-free—no gears or belts to replace
Excellent repeatability and dynamic response
Ⅵ. Installation & Maintenance
Ensure a flat, rigid, vibration-free mounting surface before installation.
Use the recommended torque settings for all mounting bolts and couplings.
Verify encoder alignment and feedback connection for proper control accuracy.
Avoid exposure to extreme temperatures or magnetic interference.
Perform functional inspections every 6–12 months to ensure consistent precision.
Ⅶ. Learn More
Explore more with W-Robot:
Product catalog and CAD downloads at www.w-robot.com
Technical white paper: “Direct Drive Technology and Its Role in High-Precision Motion Control”
Contact W-Robot’s engineering team for product selection and integration support.
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Listed below are answers to our most commonly asked questions. Don't see your question?Contact our customer service team. We would be glad to assist you.

FAQ

Listed below are answers to our most commonly asked questions. Don't see your question?Contact our customer service team. We would be glad to assist you.

What are the future development trends of linear modules and linear motors?

In the future, linear modules and linear motors will develop towards higher precision, higher speed, smaller size, intelligence, and integration with other advanced technologies (such as artificial intelligence and the Internet of Things).

What parameters need to be provided for customized linear motors?

It is necessary to provide detailed parameters such as load weight, stroke, speed, acceleration, accuracy requirements, installation method, and operating environment so that the manufacturer can design and manufacture a linear motor that meets the requirements.

How long is the customization cycle of linear modules?

The customization cycle depends on the complexity of the customization and the manufacturer's production capacity, generally about 1-4 weeks. The specific time can be determined by communicating with the manufacturer.

Can linear motors be upgraded?

The performance of linear motors can be improved by upgrading them with high-performance drives, optimizing control system parameters, and improving heat dissipation structures.

Is it easy to upgrade the linear module?

It is relatively easy to upgrade the motor, control system, guide rail and other components of the linear module according to actual needs to improve its performance and accuracy.

What is the after-sales maintenance service of linear motors?

Regular manufacturers usually provide comprehensive after-sales maintenance services, including fault diagnosis, maintenance guidance, parts replacement, etc., but the response speed and quality of after-sales maintenance services may vary from manufacturer to manufacturer.

What is the warranty period for linear modules?

The warranty period of linear modules from different manufacturers varies, generally around 1-2 years. The specific warranty period can be confirmed with the manufacturer at the time of purchase.

What should we pay attention to when integrating linear motors with other equipment?

Attention should be paid to issues such as interface compatibility, signal matching, control logic coordination, and installation space and layout between devices to ensure that the devices can work together.

Can the linear module be integrated with other equipment?

Absolutely. Linear modules can be integrated with other devices such as robots, sensors, and vision systems to build more complex and intelligent automated production lines.

What kind of control system do linear motors require?

Linear motors typically require a high-performance motion control system that can achieve precise position control, speed control, and thrust control, such as a dedicated linear motor drive with a motion control card or a high-end PLC.

Products

Direct Drive Rotary Motor-DDRI-224-042

Ⅰ. Product Overview

Ⅱ. Technical Features

Ⅲ. Application Fields

Ⅳ. Model Selection & Customization

Ⅴ. Product Advantages

Ⅵ. Installation & Maintenance

Ⅶ. Learn More

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