Patent ID: 9261178
Filing Date: 2016-02-16
CPC Classification: F16H,Y10T

Claim Text:
1. A linear device comprising a raceway member which extends in an axial direction and which has a rolling element rolling part on its outer circumferential surface, a moving member which has a load rolling element rolling part which faces the rolling element rolling part on its inner circumferential surface and which can move relative to the raceway member, a plurality of rolling elements which are loaded rollably inside a rolling element raceway which is formed by the rolling element rolling part and the load rolling element rolling part, a rolling element recirculation path which connects a starting point and end point of the rolling element raceway to form an endless rolling element passage, and a pair of seal members which are respectively attached to two ends of the moving member in the axial direction, wherein each of the seal members is formed to a shape having a clearance of 0.025 to 0.15 mm with respect to the raceway member when cut along a direction perpendicular to the axial direction of the raceway member in a state attached to the moving member and wherein grease with a worked penetration of 175 to 250 is coated between the rolling element raceway and the rolling elements such that a respective grease layer is formed between the raceway member and the seal members to result in the clearance between the seal members and the raceway member becoming smaller by an amount of the grease layer, wherein a material of each of the seal members is made of a metal material, wherein the rolling element rolling part is a rolling element rolling groove formed on the outer circumferential surface of the raceway member, and wherein the clearance is defined as the geometrically smallest distance between a surface of the rolling element rolling grove to one of a plurality of corners of a tip of each respective one of the pair of seal members.