GAS BEARING AND MANUFACTURE THEREOF

摘要

PURPOSE:To alleviate wear of a bearing surface so as to enhance its durability by forming an adsorptive film made of oily agent on the bearing surface of at least either one of support member or rotary member. CONSTITUTION:A support member 1 consists of a shaft 3 and a base stand 5 and its bearing surface 7 comprises a cylindrical radial bearing surface 11 provided on the external diametrical surface of the shaft 3 and a convex/ spherical thrust bearing surface 13 provided on the end surface of the shaft 3. Grooves 15 for generating dynamic pressure are provided on the radial bearing surface 11. And, a bearing surface 25 facing the bearing surface 7 of the support member is formed on a rotary member 19 fitted around the shaft 3 and this bearing surface 25 is provided with a cylindrical radial bearing surface 27 facing the radial bearing surface 11 of the support member and a flat thrust bearing surface 29 facing the thrust bearing surface 13 of the support member. And an adsorptive film made of oily agent such as high grade fatty aid, high grade alcohol etc. is formed on the bearing surface of the support member.