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Direct Drive Rotary Motor-DDRI-100-035

Continuous torque ；N.m ；1.0 Continuous current ；A rms ；1.5 Maximum torque Maximum torque ；N.m ；3.0 Maximum current ；A rms ；4.5 Torque constant Torque constant ；Nm/A rms ；0.67 Resistance ；Ohm (25°C) ；8.1 Inductance ；mH (25°C) ；5.2

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DDRI Series (Internal Rotor Motor)

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DDRI-100-035 Direct Drive Rotary Motor
High Torque · Zero Backlash · Ultra-Compact Rotary Precision
Ⅰ. Product Overview
The DDRI-100-035 Direct Drive Rotary Motor from W-Robot is a compact, high-performance direct-drive actuator engineered for precision rotational control. With its 100 mm frame diameter and 35 mm body height, this model provides an optimal balance between torque output, dynamic response, and installation compactness — making it ideal for space-constrained, high-precision automation systems.
By eliminating mechanical transmission components such as belts or gears, the DDRI-100-035 achieves zero backlash, minimal vibration, and high positioning repeatability, ensuring ultra-smooth rotation even at low speeds. Its integrated high-resolution encoder guarantees accurate feedback and superior motion stability, providing exceptional control for demanding industrial and robotic applications.
Ⅱ. Technical Features
Direct-Drive Structure: No intermediate transmission, ensuring zero backlash and excellent dynamic response.
Compact & Lightweight Design: 100 mm diameter housing suitable for limited-space automation systems.
High Torque Density: Offers up to 3.8 Nm continuous torque, supporting stable operation under heavy duty cycles.
Integrated High-Resolution Encoder: Enables sub-arcsecond precision for ultra-smooth rotation.
Low Noise, Low Vibration: Perfect for inspection, assembly, or optical applications requiring quiet motion.
Maintenance-Free Operation: No gears, belts, or lubrication; ideal for clean and long-lifetime installations.
Flexible Installation: Compatible with both vertical and horizontal mounting; customizable shaft and flange options.
Ⅲ. Application Fields
The DDRI-100-035 is ideal for high-precision rotary applications, including:
Semiconductor wafer alignment and transfer systems
Rotary stages in optical inspection and metrology
Robotic wrist and joint modules
Tool changers and index tables for CNC automation
Laser and dispensing machine rotation axes
High-accuracy positioning and testing systems
With its superior torque performance, compact body, and maintenance-free operation, DDRI-100-035 provides unmatched stability and precision in continuous-duty environments.
Ⅳ. Model Selection & Customization
W-Robot offers a comprehensive customization service to fit your specific mechanical and control requirements:
Torque and inertia matching for optimized acceleration response
Encoder resolution and signal output type customization
Shaft design options: solid or hollow shaft for wiring or pneumatic routing
Cooling configuration: natural or forced-air for high-duty operation
Integrated servo driver or EtherCAT control interface available
Mechanical mounting interface and flange dimension customization
Full CAD drawings (2D/3D), performance graphs, and technical documentation are available upon request.
Ⅴ. Product Advantages
Zero-backlash torque transmission for high-precision rotation
Compact structure with superior torque-to-size ratio
Integrated encoder for direct and accurate position feedback
No wear components → minimal maintenance and long lifetime
Quiet, smooth, and stable operation suitable for precision assembly
Modular compatibility for multi-axis or gantry motion systems
Ⅵ. Installation & Maintenance
To ensure long-term reliability and performance:
Install on a flat, rigid, and vibration-free surface to maintain alignment.
Use specified screw torque to fix the motor and coupling interface.
Ensure proper cable management and avoid pulling or bending the encoder cable.
Avoid operation in excessively humid or high-temperature environments.
Regularly verify encoder calibration and motor condition every 12–18 months.
As a direct-drive solution, the DDRI-100-035 requires virtually no maintenance while maintaining exceptional motion accuracy throughout its service life.
Ⅶ. Learn More
Discover more from W-Robot:
Visit www.w-robot.com for detailed specifications and CAD downloads
Read our white paper: “Direct Drive Technology in High-Precision Robotics”
Contact the W-Robot technical team for selection support and integration consultation
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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.

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-100-035

ChatGPT 说：

DDRI-100-035 Direct Drive Rotary Motor

Ⅰ. Product Overview

Ⅱ. Technical Features

Ⅲ. Application Fields

Ⅳ. Model Selection & Customization

Ⅴ. Product Advantages

Ⅵ. Installation & Maintenance

Ⅶ. Learn More

Related Products