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Direct Drive Rotary Motor-DDRE-170-95

Motor Size ；170(D)*95(H)mm Cont Torque ；23.8N.m Peak Torque ；71N.m Cont/Peak CUR ；2.5/7.5A-rms

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DDRE Series (External Rotor Motor)

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DDRE-170-95 Direct Drive Rotary Motor
High Torque · Large Hollow Shaft · Precision Motion for Advanced Automation
Ⅰ. Product Overview
The DDRE-170-95 from W-Robot is a high-torque, large-aperture direct drive rotary motor engineered for demanding applications requiring ultra-smooth rotation, precise positioning, and high dynamic response. With an outer diameter of 170 mm and a central hollow shaft of 95 mm, this model provides the perfect balance between power density and integration flexibility, allowing users to pass cables, optics, or pneumatic lines directly through the motor center.
Thanks to its direct-drive architecture, the DDRE-170-95 completely eliminates traditional mechanical transmission elements (like belts, gears, or reducers), ensuring zero backlash, low vibration, and excellent torque linearity. It is the ideal rotary solution for robotic joints, semiconductor handling, and high-precision indexing systems.
Ⅱ. Technical Features
Direct Drive Structure: Eliminates backlash and mechanical wear for lifetime precision.
Large Hollow Shaft (Ø95 mm): Simplifies machine design and cable management.
High Torque Density: Advanced electromagnetic design for strong torque with low heat rise.
Ultra-Smooth Operation: Optimized magnetic field minimizes cogging torque, ensuring consistent rotation even at low speeds.
Precision Feedback: Supports both absolute and incremental encoders for nanometer-level positioning accuracy.
Compact Frame (Ø170 mm): Enables easy integration into limited-space mechanisms.
Maintenance-Free Design: No gears, belts, or lubrication required, ideal for clean and silent environments.
Ⅲ. Application Fields
The DDRE-170-95 is designed for advanced automation and robotics where stability, repeatability, and precision are crucial. It is widely used in:
Robotic arm joints and collaborative robots
Rotary indexing and turntable systems
Semiconductor wafer transfer and metrology equipment
Optical alignment and inspection platforms
Medical imaging and diagnostic machinery
High-speed assembly or packaging lines
Its combination of large center aperture, low inertia, and direct torque response makes it ideal for dynamic, multi-axis system integration.
Ⅳ. Model Selection & Customization
W-Robot provides flexible configuration options to meet various industrial needs:
Encoder Type: Absolute, incremental, or high-resolution serial encoders
Torque & Speed Optimization: Tuned for your specific load and motion profile
Shaft and Flange Customization: Tailored mechanical interfaces for OEM equipment
Cooling Method Options: Natural convection, forced-air, or liquid cooling
Integrated Servo Driver (optional): Compact embedded motion control solution
Multi-Axis System Integration: Compatible with linear and rotary module combinations
Ⅴ. Product Advantages
Zero backlash for unmatched angular positioning precision
95 mm large hollow shaft for simplified integration of cables and media lines
High torque and stiffness suitable for heavy-duty rotary applications
Smooth, silent motion – ideal for cleanroom or laboratory environments
Compact, rigid construction for easy mechanical integration
Maintenance-free operation ensuring long-term reliability and stability
Ⅵ. Installation & Maintenance
Install the motor on a stable, vibration-free mounting surface
Ensure accurate alignment between shaft and load to prevent mechanical stress
Use specified torque for all mounting screws and couplings
Keep the hollow shaft and encoder interface free from contaminants
Avoid humidity, dust, and strong magnetic interference during operation
Regularly inspect electrical connections and encoder calibration for optimal performance
Ⅶ. Learn More
Discover more with W-Robot:
Visit: www.w-robot.com for DDRE Series catalogs and 3D CAD downloads
Read the article: “How Direct Drive Motors Revolutionize Modern Precision Automation”
Contact W-Robot’s technical engineers for selection guidance and system 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-DDRE-170-95

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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