Patent attributes
A motion guide device 10 includes a track rail 11 as a track member and a movable member 13 mounted to the track rail 11 via a plurality of balls 12. The plural balls 12 of the motion guide device 10 are disposed in an endless circulation passage 20 composed of a loaded rolling passage 15 formed between the track rail 11 and the movable member 13, and a non-loaded rolling passage formed to the movable member 13 so as to connect one and another ends of the loaded rolling passage 15. A portion of the track rail 11 or movable member 13 in the vicinity of the rolling member rolling surface thereof contacting to the plural balls 12 is formed of a metal material, and the other portion thereof is formed of an FRP. According to such structure, there can be provided a motion guide device 10 having a high strength and a high rigidity as well as a reduced weight.
