Patent ID: 8834025
Filing Date: 2014-09-16
Classification: F16C

Abstract:
1. A linear motion guide device comprising: a guide rail including a rolling element rolling groove formed in an outer side face; a slider including a rolling element rolling groove formed in an internal side face so as to face the rolling element rolling groove of the guide rail, the slider being provided in a slidable manner through a plurality of rolling elements loaded in a load raceway formed by the rolling element rolling grooves facing with each other; and a pair of end caps disposed at both ends of the slider so as to form an endless circulation channel for the plurality of rolling elements, wherein: the slider comprises a rolling element return channel along the load raceway, the rolling element return channel forming the endless circulation channel; the end cap comprises a scooping portion that scoops the rolling elements rolling over the load raceway, and a direction change channel that interconnects the load raceway with the rolling element return channel, the scooping portion and the direction change channel forming the endless circulation channel; the end caps are each formed by injection molding using metal powders having a particle diameter of equal to or less than 20 μm as a raw material; and the scooping portion is subjected to an HIP process and a thermal process.