Linear motion guide unit

A linear motion rolling guide unit equipped with a track rail, comprising:

• track grooves formed in a lengthwise direction along both sides of said track rail, a slider movable relative to said track rail, said slider having a casing in which grooves are formed, said grooves being in opposition to respective ones of said track grooves, said casing having endcaps at ends thereof and seal members arranged on said endcaps and said slider having a mounting surface provided on at least one end thereof disposed in the direction of slider movement, a mounting portion provided on said mounting surface, and a table, which extends transversely with respect to the direction of slider movement attached to said mounting surface, rolling elements being disposed in said track grooves, said rolling elements circulating through said grooves as said slider moves along said track rail, a flat upper surface of said slider being perpendicular to said mounting surface and parallel to a lower surface of said track rail.