Nsk Corporation

Nsk Precision Co., Ltd.

Kenta Nakano

Hiroki Yamaguchi

Ryoichi Sato

A linear guiding device where noise characteristics are improved by reducing traveling noise and operability of a slider body is smoothed, and where movement braking can be improved by reducing rolling body passage vibration. Crowningwith a curved surface having a predetermined curvature radius R is provided on an end section of a rolling body raceway grooveof a bearing block. A crowning amount C of the crowningis set to a value C&#x3e;Hgreater that the value of a maximum elastic deformation amount Hof a rolling body B elastically deformed in a rolling body rolling pathby a preload or an external load. By this, even when a large load acts on a bearing blockA or a large installation error occurs by skewing etc., the rolling body B smoothly rolls without an elastic deformation amount of the rolling body B rolling on the end section side of the rolling body raceway groovebecoming greater than the crowning amount C. As a consequence, significant worsening of a noise level and impairment of operability can be prevented.

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Maebashi, Japan

Kenta Nakano