Engine and Chassis Dynamometers, Transmission
Test Stands, & Data Acquisition Systems and Controls
Producing some of the world's finest dynamometers and equipment since 1976.

50X-Series Up to 1000 HP (746kW)
35X-Series Up to 2100 HP (1566kW)
45X-Series Up to 4500 HP (3356kW)

PTX Up to 1000 HP (746kW)
PTD Up to 400 HP (298kW)


The 45X-Series dynamometer is designed for testing on-highway, construction, mining, power generation, and marine diesel applications. It has test capacities from 100-4500 HP, with operating speeds to 4000 RPM. Due to its high absorption and speed capabilities, the 45X Series allows for a wide range of engines to be tested. In addition, the 45X-Series may be used in tandem applications for increased testing capabilities.
Each X-Series dynamometer features a trunnion-mounted, fixed base design. These dynamometers provide equal load capability in either direction of rotation. Power Test dynamometers are constructed of multiple absorption sections offering the flexibility to test prime movers of widely varying outputs with the same dynamometer. By closing off selected sections, the absorption characteristics are able to be closely matched to the engine or motor's capability.
The through shaft design allows either end of the dynamometer to be driven and for dynamometer mounted starting systems to be attached and used. Although supplied to provide long term service, internationally available bearings and seals are used in every X-Series dynamometer and are located in easy-to-access cartridges to allow field service without the need for dynamometer removal or specialty tools.
Power Test manufactures and supplies a wide variety of engine testing components, ranging from drive shafts and engine adapters to water recirculation systems and data acquisition and automated control. The above illustration provides an example of what is typically found in an engine dynamometer test cell.
Visit our accessories page to view the latest in engine dynamometer components. For more information about our PowerNet series of data acquisition and control systems, visit our data acquisition page.