Lubricant-free vacuum pump used as a turbo molecular pump comprises a gas bearing surface facing a shaft and/or a gas bearing rotor and having a hard layer

摘要

Lubricant-free vacuum pump (1) comprises a gas bearing surface facing a shaft (4) and/or a gas bearing rotor and having a hard layer with a layer thickness of 0.5-30 mu m. The material of the hard layer has a micro-hardness of at least 1000 HK at 0.01 N measuring force. An independent claim is also included for a method for the production of a gas bearing for a vacuum pump.