Working principle of air bearings are, compressed air into the power tool shaft supported by air bearings, is divided into two channels, one channel for the drive power to the tool axis, another channel for housing support power tool shaft. From the rotary tool shaft and air bearings are precision machined, the gap between 0.02mm.
Advantages of power tool axis air bearing, usually in front of the cutter axis, position the tool axis "floating" State. In other words, the air pressure must first be in a spin to the cutter axis, to spin the tool between the shaft and housing seat forms a cushion. The formation of an air cushion, by opening a manual air valve or programmed program opens a solenoid air valves, air pressure needed to control their work.