The NES Three-Ball-on-Rod Tester represents one of the most economical rolling-contact fatigue, proof-of-concept tests available in the industry. Testing is performed to evaluate the influences of heat treatment, material, lubricant, and/or coatings on rolling-contact fatigue life.
The NES tester’s advantage lies in containing overall project costs through short run times with an inexpensive rod specimen that can provide multiple failure data points. High stress-cycle accumulation per revolution and stress levels up to 900 ksi (6.2 GPa) provide many options to the test engineer. NES has designed these RCF testers with oil heaters, lubricant flow control, test fixture temperature monitoring, and vibration sensors with a dedicated data acquisition and monitoring system to ensure test integrity.