Portable Train Weighing Systems for Static and In-Motion Applications
Since inventing the patented Portable Train Weigher (PTW) in 1995, Weighwell Engineering Ltd has become a global leader in portable train weighing solutions. Designed for both static and in-motion weighing, our PTW units can be installed on virtually any rail type or track gauge — delivering accurate results without the need for costly civil works or permanent track modifications.
Used by freight operators, train maintenance depots and manufacturers worldwide, our weighing systems help improve safety and optimise rail operations — from weighing aggregate trains at material handling sites to verifying individuals wheel weights after rolling stock maintenance.
Static Train Weighing Systems
We offer four portable static weighing configurations for depots and maintenance workshops. These systems are ideal for rolling stock that has undergone service, refurbishment or major component changes such as bogie, wheelset or spring replacement — where side-to-side balance and cross axle variations must be checked.
- Axle Weighing – Weighs each axle individually using a 500mm PTW unit, requiring no removal of rail fastenings or permanent track work. A cost- effective and time-saving option for depot operations.
- Bogie Weighing – Measures both axles in a bogie (two or three rail scales depending on configuration). Essential for bogie overhaul and train assembly, providing highly accurate individual wheel weights.
- Railcar Weighing – Uses multiple PTW units (four or six rail scales) placed under each axle to weigh an entire railcar or locomotive in a single operation. This approach provides precise, consistent results for every wheel, axle, and bogie, with minimal influence from track gradients — making it ideal for modification projects and acceptance testing.
- Multi-Railcar Weighing – Positions PTW units under every axle of a trainset, allowing multiple railcars to be weighed at once. This significantly reduces vehicle movements, saves time and ensures consistency across the whole train — ideal for production, commissioning or approval testing.
In-Motion Train Weighing Systems
Designed for low-speed weighing, our in-motion systems record wheel, axle and wagon weights as trains pass over the PTW at up to 3 mph (5 km/h), with an achievable overall accuracy of 2–3% (subject to site conditions). This enables operators to monitor loading patterns and identify imbalances without disrupting train movements.
Suitable for freight terminals, aggregate yards, and material handling sites, the PTW installs in under 15 minutes. It can handle heavy loads such as coal, steel, or stone, helping operators optimise payload efficiency and avoid loading issues.
Train Weighing Software
Our software range provides advanced reporting and data management for both static and in-motion weighing applications.
- ptwX – Optimised for static weighing with weighing screens suited to the rolling stock’s configuration, this software displays real-time wheel load data and allows adjustable tolerance modes to detect imbalances quickly.
- ConnectWeigh™ – Designed for static weighing with streamlined data export options. The software features configurable weighing screens and custom projects.
- WiM – Built for in-motion weighing, this software provides load imbalance data as a percentage or ratio. The software can output detailed CSV files for operational monitoring and reporting.
Train Weighing Indicators
Weighwell offers dedicated indicators for both static and in-motion weighing, providing clear, instant results in all rail environments.
- Static Weighing Indicator – Features a touchscreen interface with integrated QWERTY keypad and can display up to four axles (eight wheels) with individual wheel weights in real-time. Weighing units are in kilogrammes (10kg increments) and results can be exported via USB or printed for record-keeping.
- In-Motion Indicator – Designed for trackside use, this IP65-rated unit uses a durable physical keypad and can output weighing data in kilogrammes, tonnes, or pounds. Data can be printed instantly or exported to a USB for further analysis.
Flexible Hire Solutions
Weighwell offers flexible hire options for both static and in-motion train weighing systems. This service is ideal for time-critical weighing’s, periodic maintenance programs or temporary loading sites. Hire packages include all the necessary equipment, setup support and optional operator training. Whether you need a system for a single day or several months, our rental service provides the same proven technology and accuracy — without the long-term commitment.
Global Reach and Support
Weighwell has supplied hundreds of PTW systems to customers in over 40 countries. All our rail scales are tested and calibrated using equipment traceable to UKAS and OIML standards. Our global support includes installation, training and technical support to ensure long-term performance.
From trams and metros to high-speed trains, locomotives and freight wagons, our portable systems provide a flexible, accurate and proven solution for rail weighing worldwide.
