Patent ID: 7534042
Filing Date: 2009-05-19
Classification: F16C

Abstract:
1. A linear motion guide unit comprising an elongated guide rail, a slider movable lengthwise of the elongated guide rail in a sliding manner, and more than one rolling element running through a load-carrying race defined between the guide rail and the slider, the rolling element being allowed to roll through a circulating circuit made up of the load-carrying race, a return passage made in the slider in parallel with the race, turnaround passages joining the race and the return passage together with one another; wherein the slider is provided on forward and aft end surfaces thereof with lubricant reservoirs of porous compact impregnated with lubricant, the forward and aft end surfaces being each made with a hole open to the associated turnaround passage, and the lubricant reservoirs being each provided with a nose that extends into the hole in a way exposing its tip end to the turnaround passage to define partially a wall surface of the turnaround passage, coming into rolling-contact with the rolling element rolling through the turnaround passage to apply the lubricant on the rolling element, and wherein the lubricant reservoirs are each made up of a major plate and a nose that is made either integral with the major plate or separately from the major plate, followed by being joined with the major plate.