Abstract: A linear guide device comprising a straight guide rail, and a movable body having an approximately inverted U-shaped cross section and movable as fitted over the guide rail. A line through the center of curvature of the circular-arc portion of the movable body ball guide groove to be in point contact with the ball in the load reducing region is shifted, when seen in cross section, on a line extending from said line and extending through a point away from a straight line through the points of contact of the ball with the circular-arc portions of the ball guide grooves in a maximum loading region, within a range closer to the guide rail than a line through the center of curvature of the circular-arc portion of the guide rail ball guide groove to be in point contact with the ball, and is thereby made to gradually approach the line of the guide rail through the center toward the reverse passage.

Abstract: A linear guide device comprising a straight guide rail, and a movable body movable as fitted over the guide rail, the movable body comprising a movable block generally inverted U-shaped in cross section and having a pair of legs at its opposite sides, each of the legs being formed with a ball circulation channel in the form of a loop, and a plurality of balls movable through the channel in circulation and rollable between the movable block and the guide rail, the movable block comprising an end cap at each of its opposite ends and an intermediate member as the remaining portion, the ball circulation channel comprising a groovelike forward passage formed by a retainer in one side of the leg of the block intermediate member and facing the guide rail, a borelike return passage formed in the leg outwardly of the forward passage, and reverse passages each formed by fitting a guide member to each of the block end caps and interconnecting the corresponding ends of the forward and return passages, the block intermedi