Patent ID: 7296930

Claim:
A rolling guide device comprising: a rail having upper and lower surfaces which are substantially parallel planes, sides which protrude from said substantially parallel planes in a continuous arc shape, and a rolling member rolling surface formed along a longitudinal direction of said rail; a block having an opening in which the rail is fitted and a rolling member circulation passage including a loaded rolling member rolling surface corresponding to the rolling member rolling surface of the rail; and a plurality of rolling members disposed and housed in the rolling member circulation passage and circulating in accordance with the relative movement of the rail and block, wherein a sectional shape at right angles to the longitudinal direction of the rail and a sectional shape of the opening of the block are formed into a mutually geometrically conforming longitudinal shape, with a uniform clearance between the rail and the block in the opening except between the rolling member rolling surface and the corresponding loaded rolling member rolling surface.