The revolving speed is changeable while operating. The gears are safe absolutely. The total maximum height is 570mm. Design of motor and gear box makes the point of gravity center become only 280mm. As the center of gravity is low and stable, the magnetic foundation can function well.
The distributor disc is located on the top of machine that can prevent it from falling and damaging.
MTM-930A & MTM-922A with variable six-step speed (max.Revolving speed:756, min. revolving speed:51) to select depends on the hardness of processed objects and size of hole that makes the work more convenient.