Test Stands and Dynamometers
The AC motor systems we design and manufacture are put to use in a variety of applications. Often they are used for testing various rotational components in the automotive and aerospace industries. Our design, analysis and manufacturing capabilities allow us to create AC motor systems that exceed others in broad range torque, power and speed performance. For information on specific performance capabilities please view the high performance liquid cooled AC motors page.
A majority of our test stands utilize liquid cooled motors. The liquid cooled nature of this machinery offers the following advantages:
1. High Power and High Speed
If power and speed requirements are both high, then enhanced liquid cooling can be used to increase heat transfer efficiency and allow higher power density.
2. Low Inertia
Designers specify low inertia when they want a responsive system. Low inertia dictates small rotor diameters for electric motors. For a given power rating, a smaller rotor will require enhanced heat transfer through liquid cooling.
3. Size and Weight Restraints
Liquid cooled applications are convenient when the envelope for a machine is small or the application has weight constraints. Smaller liquid cooled machinery can generate the same outputs the larger air cooled variety.
4. Avoidance of Air Cooling Problems
Liquid cooling provides an alternative for environments that are not receptive to air cooling applications. This includes confined areas, high contamination areas, and areas with high ambient temperatures. Mining, atomizer systems, and injection molding, are all candidates for liquid cooling.
5. Low Noise
Liquid cooled machinery is much quieter than air cooled machinery. Additionally, the fluid recirculating system can pump liquid to the machinery from a remote area, eliminating ambient noise pollution.
6. Environmental Control
A typical air cooled system allows hot air to exhaust into the surrounding area. This is particularly undesirable 
in confined areas that may require additional ventilation. Waste heat can be pumped to an external area with a liquid cooled system.
7. Precision
Process control standards are forcing facilities to control environmental temperatures. Liquid cooling provides superior temperature control to arrest thermal growth problems, control performance variations, and control ambient temperatures in sensitive processes.
8. Reliability
Liquid cooled motors provide more reliable operation. This is due to better lubrication, a reduction in operating temperature and reduction 
of temperature gradients in the motor. Temperature gradients result in differential expansion of components. This makes it difficult to hold tight tolerances in the machine construction and can result in high component stresses and increased wear rates.