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Medium-sized Intelligent Rail Grinding Vehicle

The rail grinding vehicle independently developed by our company integrates information technology into the field of rail maintenance for the first time. The equipment consists of a vehicle body, generator set, drive system, dust removal system, agrinding unit and PLC control system. Through the automatic lifting device on the flat car and the cooperation with the hoisting transfer vehicle, it can realize convenient up and down road functions. The equipment innovatively adopts automatic profiling and multi-head grinding technology, bringing an efficient and precise operation mode to railway maintenance.
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Medium-Sized Intelligent Rail Finishing and Grinding Equipment

1. The position and posture of each grinding swing arm mechanism are automatically adjusted through the PLC control system, and the grinding operation can be completed according to the preset rail profile shape, which significantly improves the grinding quality, efficiency and degree of automation.


2. More than 50 grinding control programs are set internally, supporting fully automatic grinding mode.


3. Compared with large-scale mechanical equipment, it can quickly enter and exit the working area, greatly improving the utilization rate of the working window time.


4. It supports small-kilometer operations and its flexibility is significantly better than traditional equipment.




Medium-Sized Intelligent Rail Finishing and Grinding Equipment


5. It can carry out special grinding operations for small radius curves and is competent for grinding tasks of large machinery in restricted areas.


6. It can solve the problem of the connection between large-scale mechanical grinding and small-scale mechanical grinding, and achieve a historic technological breakthrough.


7. Precise grinding control range (min. 0.05mm/repeat, max. 0.3mm/repeat) to meet different grinding volume requirements.


8. The preparation time is better than that of existing grinding equipment, and the operating speed reaches 2.8km/h, which meets the needs of efficient operation.


PLC-Controlled Automatic Profiling

The equipment uses a PLC control system to automatically adjust the position and posture of each of its 12 grinding swing arms. This allows it to replicate preset rail profiles (e.g., standard rail heads, custom profiles for high-speed lines) with exceptional accuracy, eliminating human error and ensuring consistent grinding quality across the entire rail length.


50+ Built-In Grinding Control Programs

With over 50 pre-programmed grinding control modes, the equipment supports fully automatic operation for diverse scenarios—from minor surface defect repairs to full rail resurfacing. Operators can select the appropriate program based on rail condition, reducing setup time and improving workflow efficiency.


High Precision and Efficiency

The equipment offers a grinding control range of 0.05mm to 0.3mm per pass, allowing for precise adjustments to meet different rail maintenance needs. Its operating speed reaches 2.8km/h (theoretical max 3km/h), balancing precision with productivity. Compared to small manual grinders, it covers 5x more ground per hour while maintaining higher quality.


Integrated Dust Removal System

A built-in high-efficiency dust removal system captures over 95% of grinding dust, reducing air pollution and protecting workers’ health. This system also prevents dust from accumulating on track components (e.g., sleepers, ballast), minimizing secondary maintenance needs.


Small Radius Curve Capability

With a minimum grinding operation radius of 30m, the equipment excels at grinding small-radius curves—areas where large grinding machines struggle to maneuver. This makes it ideal for urban railways, metro lines, and regional lines with tight curves.



The Medium-Sized Intelligent Rail Finishing and Grinding Equipment (12-head grinding vehicle) is an innovative rail maintenance solution independently developed to integrate information technology with traditional grinding processes. It consists of a vehicle body, generator set, drive system, dust removal system, grinding unit, and PLC control system—all designed to deliver efficient, precise rail surface finishing. Unlike large grinding machines that are cumbersome to maneuver, this medium-sized equipment features automatic lifting devices and compatibility with hoisting transfer vehicles, enabling easy on/off-track access. Its standout features include automatic profiling technology and multi-head grinding, which set a new standard for efficiency and precision in railway grinding, especially for small-radius curves and restricted areas.


Operating Speed 3km/h
Minimum Grinding Control Amount 0.1mm/pass
Maximum Grinding Control Amount 0.3mm/pass
Minimum Grinding Operation Radius 30m
Applicable Track Gauge Supports customized adaptation. Customized product services are available based on your needs.


Medium-Sized Intelligent Rail Finishing and Grinding Equipment Medium-Sized Intelligent Rail Finishing and Grinding Equipment Medium-Sized Intelligent Rail Finishing and Grinding Equipment


Medium-Sized Intelligent Rail Finishing and Grinding Equipment




Rail grinding for new railway lines, periodic maintenance grinding and defect repair grinding for existing lines. 


Supports small mileage operations; can carry out special grinding operations on small radius curves.




New Railway Lines: Grinding new rails to refine surface smoothness and remove manufacturing defects (e.g., burrs), ensuring optimal train running performance.

Existing Line Periodic Maintenance: Resurfacing rails to correct wear, corrugation, and fatigue cracks—extending rail service life and reducing noise and vibration during train operation.

Defect Repair: Targeted grinding of localized defects (e.g., rail head cracks, spalling) to prevent further damage and avoid costly rail replacement.

Restricted Areas: Grinding in areas where large machines cannot operate, such as small-radius curves, tunnels, and urban track sections with limited clearance.


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WhatsApp: +8618131595437
Phone: +86-18131595437
Email: kuntietangshan@gmail.com
North Side of No.4 Road, East of Tangcao Express way Connection Line, Nanbao Development Zone,Tangshan City.

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