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Ball Screw Linear Actuator-QF20

Max Stroke ；420mm Max Load ；150Kg Body Width ；200mm Rep. Precision ；±0.006mm

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QF Series（Ultra Thin、Short Stroke）

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Ball Screw Linear Actuator – QF20
High Load Capacity · Long Stroke · Precision Motion Performance
1. Product Overview
The Willbot QF20 Ball Screw Linear Actuator is an industrial-grade, high-load linear motion system built for large-scale automation equipment and precision production lines.
Designed with a large-diameter ball screw and reinforced dual-guide rail structure, the QF20 delivers exceptional rigidity, positioning accuracy, and operational smoothness even under heavy loads.
This actuator provides a perfect balance between torque, speed, and stability, making it the ideal choice for applications requiring long travel distances and precise control.
2. Technical Features
Large-diameter precision-ground ball screw for enhanced thrust and rigidity
Dual linear guides for stable motion and high moment load resistance
Long-stroke configuration supporting smooth, consistent motion
Supports both horizontal and vertical installation modes
Compatible with multiple motor types (servo, stepper, or direct drive)
High-speed and high-precision operation with minimal vibration
Optional dust-proof and semi-sealed designs for various environments
Modular structure allowing flexible integration and easy maintenance
3. Application Fields
The QF20 actuator is widely used in high-precision and heavy-duty automation systems, such as:
Automated lifting and positioning equipment
Industrial robots and gantry systems
Semiconductor and optical device production lines
Heavy-load assembly and material handling systems
Precision machining and packaging machinery
Multi-axis motion platforms requiring synchronized control
The QF20’s superior rigidity and motion precision ensure consistent performance in complex and high-load industrial environments.
4. Model Selection & Customization
Willbot provides a variety of customization options to meet different automation requirements:
Adjustable stroke lengths, screw leads, and mounting configurations
Compatible motor flange designs for diverse drive systems
Integration with servo control systems and feedback sensors
Options for cleanroom or high-dust environments
Multi-axis coordination for gantry-style or Cartesian robots
3D CAD files and dynamic load charts available for integration design
5. Product Advantages
Heavy-load capability: supports large payloads with exceptional rigidity
High precision: micron-level repeatability for advanced automation tasks
Smooth motion: optimized screw pitch and guide alignment
Stable structure: robust aluminum frame with reinforced mounting base
Easy integration: adaptable to different installation orientations
Reliable performance: designed for 24-hour continuous operation
The QF20 delivers industrial-grade durability and accuracy, ensuring high efficiency and long service life in demanding production lines.
6. Installation & Maintenance
Ensure precise alignment of screw axis and motor coupling before operation
Fix the base on a stable, flat surface to guarantee positioning accuracy
Regularly lubricate the ball screw and linear guides
Inspect limit sensors, couplings, and mounting screws periodically
Avoid excessive impact, dust, or moisture exposure during operation
7. More Information
For detailed specifications, CAD drawings, and selection guidance,
please contact Willbot’s engineering support team.
Our experts will provide professional customization advice and system integration assistance tailored to your application.
8. Related Products
Ball Screw Linear Actuator – QF17
Fully Sealed Linear Module – VGTH20
Electric Cylinder Module – VGTY20
Linear Motor Module – VGL20
High-Speed Belt Module – OB4

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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

Ball Screw Linear Actuator-QF20

Ball Screw Linear Actuator – QF20

1. Product Overview

2. Technical Features

3. Application Fields

4. Model Selection & Customization

5. Product Advantages

6. Installation & Maintenance

7. More Information

8. Related Products