Patent ID: 7354198
Filing Date: 2008-04-08
Classification: F16C

Abstract:
1. A linear motion guide unit comprising an elongated guide rail, a slider movable lengthwise of the elongated guide rail, and a rolling element allowed to roll through a circulating circuit composed of a race defined between the elongated guide rail and the slider, and a return passage and a turnaround passage both made in the slider, wherein the return passage is provided by a hole extending forward and aft through a tubular composition installed in the slider, wherein the tubular composition is comprised of a tubular skeleton having therein a lengthwise window made open from a circular surface thereof to the hole, and a cellular member extending lengthwise to fit into the window in the tubular skeleton, and wherein the rolling element is a cylinder having a rolling surface and axially opposite ends, and the tubular composition has a circular outside surface while the hole made in the tubular composition is formed to have a transverse section of rectangle.