Patent ID: 8328422

Claim:
A component for linear guideway comprising: an elongated rail with a plurality of rolling passages and holes; a slide block movably disposed on the rail and provided with rolling grooves for cooperating with the rolling passages to define a load path, the slide block being further provided with return holes; two end caps mounted at both ends of the slide block and each having a return path which is connected with the load path and the return hole to form a circulation path; a plurality of rolling members rolling within the circulation path; each of the holes of the rail being sealed with a bolt cover; wherein the bolt cover is made of bulk molding compound; the end caps are made of thermal setting material which is selected from the group consisting of unsaturated polyester resin, phenolic resin, Urea resin, epoxy resin, silicone resin, melamine and epoxy insulation, each of the two end caps is further provided with an inserting member in which is defined the return path, and the inserting members are made of metal which is selected from the group consisting of Ni—Fe—C alloy, stainless steel alloy, Mn—Cu alloy, and soft magnetic alloy.