Guide device

A guide device comprising:

• a guide rail;
• a slider;
• and
• a plurality of rolling elements, the slider comprising:
• a slider body;
• and
• end caps that are configured to be fastened to both ends of the slider body in a moving direction of the slider, the slider body comprising:
• a main body part that is configured to extend to both ends of the slider body in a width direction of the guide rail;
• and
• a pair of leg parts that are configured to extend in a height direction of the guide rail from both ends of a bottom face of the main body part, a surface of the main body part at the opposite side from the guide rail being a member mounting surface, wherein
• the guide rail and slider have rolling surfaces that are arranged to face each other and that are configured to constitute a rolling passage of the plurality of rolling elements,
• the slider body has a return passage of the plurality of rolling elements,
• the return passage is a through hole opened at both ends of the slider body in the moving direction of the slider,
• each of the end caps has a direction changing path which communicates the return passage and the rolling passage,
• the rolling passage, the return passage, and the direction changing path are configured to constitute a circulation path of the plurality of rolling elements,
• the plurality of rolling elements are circulated through the circulation path, and one of the guide rail or the slider moves relative to the other along the guide rail, and
• the slider body has a rolling element insertion hole opened at a first location above each of the pair of leg parts, above the return passage and at a depression part of the member mounting surface of the slider body, extends in a height direction of the leg parts to reach a second location where a circular-shaped cross section of the return passage is bisected, and communicates with the return passage, an opening of the rolling element insertion hole is configured such that in a planar view, a dimension of the rolling element insertion hole extending in a rolling element moving direction is larger than a dimension of the rolling element insertion hole extending in the width direction of the return passage.