SLIDING LINEAR GUIDE

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to achieve a low sliding friction coefficient while preventing metal contact between sliding faces by forming a fluid lubricating film even when applying conventional technology for the sliding linear guide of a machine tool having the parallel and planar sliding faces on which low bearing pressure operates. SOLUTION: In the sliding linear guide, lubricating oil is supplied into a gap between the sliding faces 1, 2 of one set of opposed guide members 3, 4 for relative motion. In one sliding face 1, there are provided a first oil groove 5 for diffusing the lubricating oil between the sliding faces, a lubricating oil supply hole 6 connected to the first oil groove, a plurality of second oil grooves 7 into which the lubricating oil is supplied from the first oil groove to generate lubricating oil film pressure between the sliding faces during sliding, and oil grooves 8 for connecting the first oil groove to the second oil grooves. The sliding face in which these oil grooves are provided and the sliding face opposed thereto each have small surface roughness. COPYRIGHT: (C)2008,JPO&INPIT