The source of impurities in the gas source of the CMM The CMM is guided by air bearings, so that there is no friction and wear between the guide rails, and long-term performance uniformity can be maintained. The high-pressure gas enters between the working surface and the guide surface through the small air holes in the air bearing, forming a uniform air gap. The normal working air gap of the air bearing is between 3 and 10 μm.
