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PFG4000 ( Hollow Single Axis Gantry Stage )

journey ；850mm Straightness ；±5µm/full stroke Flatness ；±5µm/full stroke Error mapping accuracy ；+1µm Repeatability in both directions ；±1µm X/Y orthogonality ；+5μm speed ；1500mm/sec

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Marble Motion Positioning Stages

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Ⅰ. Product Overview
The PFG4000 Hollow Single Axis Gantry Stage from W-Robot is a next-generation precision motion platform engineered for high-speed, long-stroke, and ultra-stable positioning. Designed with a hollow-core structure, it enables easy routing of cables, optics, or vacuum lines through the center of the stage — a feature that simplifies integration in semiconductor, laser processing, and optical inspection systems.
With its dual linear motor drive and high-resolution linear encoder, the PFG4000 delivers zero-backlash motion, high acceleration, and sub-micron positioning accuracy. The rigid aluminum base ensures structural stability, while optional air-bearing or precision linear guides provide smooth, friction-free travel.
This gantry stage represents the ideal solution for applications requiring large travel ranges, high dynamic response, and long-term reliability under continuous operation.
Ⅱ. Technical Features
Hollow-core structure: Supports optical paths, cable harnesses, and vacuum lines through the central axis.
Dual linear motor drive: Provides synchronized high-speed motion and powerful thrust output.
High-precision linear encoder: Ensures sub-micron level accuracy and repeatability.
Rigid aluminum base: Guarantees excellent flatness and low vibration during operation.
Optional air-bearing or linear guide system: Enables frictionless movement for ultra-smooth performance.
Customizable stroke: Available for long travel lengths exceeding 1000 mm upon request.
Low maintenance design: Non-contact drive and feedback ensure extended service life.
Ⅲ. Application Fields
The PFG4000 Hollow Single Axis Gantry Stage is ideal for precision manufacturing and scientific research environments such as:
Semiconductor wafer inspection and exposure systems
Laser cutting, engraving, and micro-machining
Optical alignment, testing, and calibration platforms
Precision metrology and measurement instruments
Advanced automation and robotic gantry systems
Ⅳ. Model Selection & Customization
W-Robot provides tailored customization options to match your integration and performance needs:
Travel range and stroke customization for specific system layouts
Load and acceleration optimization for heavy or high-speed motion
Compatibility with multiple motor types (servo, linear, or torque motors)
Encoder resolution upgrades for nanometer-level precision
Configurable structural stiffness and damping for vibration-sensitive applications
Multi-axis expansion (XY, XYZ, or gantry combinations)
CAD models, technical drawings, and motion control interfaces are available upon request for system designers.
Ⅴ. Product Advantages
Large travel range with superior dynamic stability
Hollow-core design simplifies integration of optical or pneumatic systems
High rigidity ensures smooth operation under load
Non-contact drive eliminates backlash and wear
High accuracy, repeatability, and durability for 24/7 operation
Suitable for precision industrial automation and scientific applications
Ⅵ. Installation & Maintenance
To ensure long-term reliability and optimal performance:
Install the stage on a flat, vibration-free, and rigid base surface
Keep all guide and encoder surfaces clean and dust-free
Periodically verify encoder calibration and motion alignment
Avoid exposure to excessive humidity or magnetic interference
Securely fasten all mechanical interfaces and motor mounts
Perform preventive inspection every 6–12 months depending on usage
Ⅶ. Learn More
Explore more at www.w-robot.com
Access:
Product catalog & 3D CAD models
Technical article: “High-Precision Hollow Gantry Stages in Modern Automation”
Contact our engineering team for motion system design assistance
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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

PFG4000 ( Hollow Single Axis Gantry Stage )

Ⅰ. Product Overview

Ⅱ. Technical Features

Ⅲ. Application Fields

Ⅳ. Model Selection & Customization

Ⅴ. Product Advantages

Ⅵ. Installation & Maintenance

Ⅶ. Learn More

Related Products