What Are the Replacement Criteria for Table Tennis Ball Machine Motors? How to Determine If a New Motor Is Needed Unstable motor speed in a table tennis ball machine can hinder performance. This article provides a thorough analysis of common causes behind motor speed fluctuations, including unstable power supply voltage, mechanical bearing wear, transmission component looseness, and internal coil aging. Focusing on the 4-inch DynamicCore motor’s high-frequency start-stop operational demands for precise control, it outlines practical diagnostic steps such as using a multimeter to measure motor resistance and checking wiring integrity. The guide helps maintenance and after-sales professionals quickly assess whether motor replacement is necessary, improving device stability and extending service life with actionable inspection methods and troubleshooting tips. Learn More 2025/08/21