Millwright Level 1 Practice Exam

Exceeding the maximum RPM of a grinding wheel is crucial to safety because doing so can cause the wheel to shatter. Grinding wheels are engineered to withstand specific rotational speeds based on their materials and construction. When the RPM surpasses these limits, the centrifugal forces acting on the wheel can exceed the structural integrity of the grinding material, leading to catastrophic failure. This not only poses a serious risk to the operator but can also cause debris to fly, potentially injuring bystanders and damaging equipment. Therefore, adhering to the maximum RPM ensures the safe operation of the grinding wheel and prevents dangerous situations that could arise from excessive speed.