Patent ID: 9222515
Filing Date: 2015-12-29
Classification: F16C

Abstract:
1. A linear motion guide apparatus comprising: a guide rail including a plurality of longitudinal recesses formed therein, a slider slidably attached onto said guide rail for moving along said guide rail, said slider including two limbs extended therefrom for forming a chamber in said slider and for slidably engaging with said guide rail, said slider including a plurality of longitudinal depressions formed in said limbs and communicating with said chamber of said slider and aligned with said longitudinal recesses of said guide rail respectively for forming a plurality of ball rolling passages between said slider and said guide rail, said slider including a plurality of longitudinal grooves formed in said limbs and offset from said chamber of said slider, two end caps attached onto end portions of said slider respectively, said end caps each including a compartment formed between two legs for slidably engaging onto said guide rail, and each including a plurality of passageways formed in said legs and communicating with said compartment of said end cap, and each including a slot formed in said end cap and communicating with said passageways of said end cap for supplying a lubricating fluid from said slot of said end cap to said passageways of said end cap, said passageways of said end cap being communicating with said longitudinal grooves of said limbs of said slider and said depressions of said limbs and said recesses of said guide rail and said ball rolling passages respectively for forming a plurality of endless ball guiding raceways between said slider and said guide rail and said end caps, two positioning members attached to said end caps, and each positioning member including an inner surface faced toward an inner surface of said limb of said slider and spaced from said inner surface of said limb of said slider for forming a space between said slider and said positioning member, said space which is formed between said slider and said positioning member being communicating with said passageways of said end cap for receiving the lubricating fluid from said passageways of said end cap and for lubricating said ball bearing device which is moved through said ball rolling passages that are formed and located between said slider and said guide rail respectively, and a ball bearing device slidably received and engaged in said endless ball guiding raceways between said slider and said guide rail and said end caps.