Linear Tracks for Robots

Choose or customize the seventh-axis linear tracks that suits your robot, plus other add-on accessories.

Overview

The linear tracks is also called the robot seventh axis, travel rail, external axis, etc. It is a common form of a robot transfer unit (RTU) and mainly consists of a base, robot carriage, reducer/servo motor, gears, linear guide rails, drag chain, etc. It is usually bolted to the floor and, through interfaces and custom programming, enables the robot to move accurately to different positions during operation, greatly expanding the robot's working range.

Our robot ground rails are classified by sealing type into open, semi-enclosed, and fully enclosed types, and by rolling method into linear guide type and roller type. The main body material is generally steel, stainless steel, or aluminum alloy. Robot ground rails are widely used in painting, welding, handling, palletizing, casting, dispensing, machine tool loading, intelligent warehousing, automotive manufacturing, and other fields.

The ground rails produced by our factory integrate and work in linkage with industrial robots from ABB, KUKA, FANUC, Yaskawa, and other manufacturers, and can be custom-built to non-standard specifications according to customer project requirements, including travel, load, speed, and other parameters as well as structural materials and additional accessories. They feature high precision and a low failure rate.

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Payload capacity: 50kg - 15,000kg

Run speed: 0.2m/s - 3m/s

Material: Steel, Aluminium, Stainless Steel


Customizable, Available for OEM

Place of Origin: Guangzhou, China

Details & Specs

Parameter Standard Series (Light / Medium Payload, Linear Guide Type) Heavy-Duty · Custom Series (Roller Guide / Widened Heavy-Duty, Extra-Long Stroke)
Maximum Payload 5 – 3,000 kg Custom-built to order, up to 15 tons
Effective Stroke 1 – 30 m Customizable from 30 – 100 m or even extra-long strokes
Travel Speed 0.2 – 2.0 m/s Customized to application; up to 3.0 m/s for heavy-duty
Acceleration 1 – 3 m/s² Customized to application
Repeat Positioning Accuracy ±0.05 mm Customized by model; precision models reach ±0.03 mm
Transmission Precision rack and pinion + linear guides (centralized lubrication) Heavy-duty roller guides / widened heavy-duty linear guides
Drive Method AC servo motor + precision reducer (increased torque reserve for heavy-duty)
Protection Rating Open / semi-enclosed (IP43) Fully enclosed (IP54 / IP65; dust / chip / coolant resistant)
Mounting Method Floor-mounted (can be used as an overhead track on a gantry / ceiling) Customized to site foundation, reinforced for heavy-duty
Power Supply Cable carrier / conductor rail (optional) Conductor rail power supply eliminates cable carrier wear (optional)
Compatible Robot Count 1 – 3 units Custom-built to production line layout
Communication Protocol EtherCAT / PROFINET and other mainstream buses; compatible with ABB / KUKA / FANUC / Yaskawa robots
Environmental Requirements Temperature 0–45℃, humidity ≤75%, vibration ≤0.5G; floor load-bearing capacity ≥5 tons/m²
Industry Applications Machine tool loading/unloading, 3C transfer, painting and dispensing, new energy assembly Automotive body welding, construction machinery, rail transit, ship block manufacturing


Core Advantages

Extended Work Envelope · One Robot, Many Uses
Adds a seventh linear axis to the robot for continuous operation across multiple stations, reducing robot count and line footprint.
High-Rigidity Heavy-Duty Base
Reinforced steel plate, fully welded construction for ample rigidity—stable at high speed under heavy loads, with no deformation over long strokes.
High-Precision Positioning
Servo motor + precision reducer + full closed-loop control for repeat positioning accuracy of ±0.05 mm (precision models ±0.03 mm).
Modular and Expandable
Standard sections splice together for strokes from 1 m to hundreds of meters, and a single Linear Track can carry multiple robots at once.
Safe and Low-Maintenance
Limit switches + mechanical anti-collision locks + optional safety light curtains / E-stops; conductor rail power supply eliminates cable carrier wear for easy maintenance.
Seamless Integration and Synchronization
Supports EtherCAT / PROFINET for synchronized interpolation with ABB / KUKA / FANUC / Yaskawa six-axis robots.

Applications

Automotive & Parts New Energy (Solar/Lithium) Heavy Industry & Steel Structure Aerospace Metalworking & Die Casting Automated Handling Automated Welding Painting & Dispensing

Product Configurator

Open Online Selection Tool

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Frequently Asked Questions

Ground rails are fixed to the floor, offer high load capacity and good rigidity, and are suitable for heavy loads, long travel, and dusty/splash environments; overhead rails are suspended overhead with zero floor occupancy, suitable for compact floors or old workshop retrofits. The two can complement each other or be combined (ground rail + overhead rail) to cover extra-long production lines. When selecting, first confirm floor space, foundation load capacity, and working range.

Load refers to the total weight of the robot body + workpiece + cables/hoses + tooling (5 kg – 15 tons); travel is determined by the distance between the first and last stations on the production line, with standard 1–30 m, heavy-duty 30–100 m or even longer, customized in 1 m increments. Please first confirm the on-site foundation load capacity ≥5 tons/m² and provide the robot model and working range.

Standard model repeat positioning accuracy is ±0.05 mm, and precision model can reach ±0.03 mm. The equipment supports mainstream communication protocols such as EtherCAT / Profinet and performs synchronized interpolation with six-axis robots from ABB, KUKA, FANUC, Yaskawa, etc., operating as an external axis without an additional standalone controller.

Yes. Travel, load, speed, accuracy, protection rating (open / semi-enclosed / fully enclosed), and materials can all be customized as needed. We also accept OEM contract manufacturing for volume production and provide complete technical documentation and on-site commissioning support.

Modular rail sections are spliced on site; the main on-site work is foundation reinforcement and leveling, so the construction period is short. Required provisions include power supply AC380V±10% 50Hz, foundation load capacity ≥5 tons/m², and confirmation of the robot brand and communication interface. We can provide one-stop delivery from preliminary solution design to on-site installation and commissioning.
Need more information about our linear tracks products?

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