Straight sliding roller bearing

A straight sliding roller bearing comprising:

• a pair of sliding table halves each including an upper load bearing portion and an lower load bearing portion and formed in an inner side of a leading end of each of said load bearing portions with loaded grooves, which have rolling faces forming loaded areas of endless roller races along their axial directions, and in an outer side of the same with unloaded portions, which form endless roller races along their axial directions in a manner to correspond to said loaded grooves, such that at least one of said rolling faces is so inclined as to bear transverse load;
• a roof mounted over the upper faces of said sliding table halves, which are opposed at a predetermined spacing to each other, and made elastically deformable between said paired sliding table halves;
• two pairs of roller guides attached respectively to the leading ends of the respective load bearing portions of said respective sliding table halves and associated either with said loaded grooves or with said loaded grooves and said unloaded portions to form said endless roller races;
• rails having their upper portions fitted at a predetermined spacing from each other in recesses formed by said sliding table halves and said roof, and having rolling faces facing the rolling faces of said loaded grooves which are formed in the load bearing portions of said respective sliding table halves;
• and a multiplicity of rollers made rollable on the respective endless roller races, which are formed respectively on the loaded portions of said respective sliding table halves, for bearing loads between the rolling faces at the sides of said sliding table halves and the rolling faces at the sides of said rails, whereby, in a pre-pressure adjusting when said roller bearing is to be attached to a carriage made movable along said rails, a gap between said sliding table halves and said rails can be adjusted by applying a transverse load to one of said sliding table halves to elastically deform said roof.