Can the motor speed of pneumatic drilling machine be adjusted if it is slow?

The motor speed of the pneumatic drilling machine cannot be adjusted, because the capacity of the pneumatic drilling machine is segmented, and the motor speed is different with different capacities. The larger the capacity of the pneumatic drilling machine, the slower the motor speed, so the large-capacity drilling machine will feel that the motor speed is too slow when tapping some small-sized teeth. When buying again, you should first know which specifications of teeth need tapping, what are the minimum and maximum sizes, which size is most commonly used, what material the workpiece belongs to and how thick it is, so that you can find a professional seller to buy it.