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Testing that Reaches the World

Heavy Off-Road Testing

Rustenburg, South Africa, 10/15/2012, Dump Trucks transporting P

Clark Testing brings years of experience in component testing and product validation for heavy equipment testing. Clark's Lab in Michigan includes one of the largest structural mass test floors in the US with a structural capability of 1.5 million pounds. In addition to its structures floor, we can custom design test programs with multiple hydraulic systems and strong backs. Hydraulic power supplies are combined with our large inventory of hydraulic cylinder with load capacities in excess of 2 million pounds.


In addition to our structural load capabilities, Clark has large shaker systems, dynamometers, thermal chambers and rotary fatigue test systems that are designed for large capacity and dimensions geared to the heavy equipment industry. We conduct our test programs under a stringent 17025 quality program utilizing the latest control and data acquisition instrumentation to ensure reliability and accuracy.

Testing Services


Clark Dynamics has the environmental chambers to accelerate aging and validate functional performance for longer product life expectancy. Clark can accommodate large component aging for extended periods simulating containment internal conditions as high as 170C.

Electromagnetic Compatibility (EMC)

Common to automated systems and electronics in the industry is the requirement to ensure electromagnetic compatibility of components and mitigate vulnerability to outside sources. Emissions and Immunity analysis provides insight as to the potentially undesirable propagation and reception of electromagnetic energy and radiofrequency interference.

Structural, Load and Fatigue

Unique to each test specimen are its functional and design-basis lifetime requirements. Clark’s facilities have the equipment and technical expertise to test a variety of components for mechanical fatigue and failure, life cycle, aging, accelerated aging, and simulation.

Shock and Vibration

Clark Testing’s Vibration laboratory has multiple hydraulic and electrodynamic shakers making Clark Testing the ideal fit for all your testing needs. Our Vibration laboratorys' investment in new equipment has led to Clark Testing being an industry leader in Vibration Testing.

Powertrain and Gearbox

Clark Testing has been in the powertrain & gearbox testing business for over 20 years. Over that time we have tested products ranging from small components such as starters and air motors to transmissions and axles in excess of 2000 horsepower. ciency for anything from heavy off-road industrial equipment to high performance motorized competition vehicles.

Fuels and Lubricants

The Fuels and Lubricants lab specializes in wear testing of products based on test rigs such as Four-Ball wear, Hydraulic Pump Wear, and FZG Gear. Clark Testing Fuels & Lubricants Laboratory is fully equipped to perform tests ranging from routine analyses to quality control.

We work closely with you to validate engineering, ensure quality, analyze products and qualify equipment while supporting the time constraints and product cycles that are vital to your success.

Paul Heffernan, CEO of Clark Testing