When a load is applied to air or electric grinders, the speed decreases, resulting in longer grinding times. To address this issue, it is essential to use high-frequency machines that deliver high output and robust torque to withstand overloads. This enables the same amount of work to be completed in a shorter time frame, thereby enhancing overall work efficiency. FUJI high-power tools operating at 250Hz, and 400Hz resist decreases in torque and frequency. They can accommodate standard wheels with a peripheral speed of 72 m/s (4,300 m/min) and also contribute to cost reduction by improving efficiency.

FUJI "KOSOKU" Professional Industrial Power Tools, resist decreases in torque and frequency for permissible overload, so working speed remains constant across the entire load range to deliver continuously high output and high efficiency.