Linear actuator

A linear actuator, comprising:

• a cylinder body containing therein a cylinder chamber to which a pressure fluid is supplied;
• a slide table configured to be movable along a longitudinal direction of the cylinder body;
• a cylinder mechanism having a piston arranged in the cylinder chamber and configured to be movable along the cylinder chamber;
• and
• a guide mechanism attached to the cylinder body and configured to guide the slide table along the longitudinal direction of the cylinder body under rolling action of a plurality of rolling elements circulating a passage, the linear actuator being configured to reciprocate the slide table relative to the cylinder body under moving action of the piston, wherein:
• the slide table includes a main body extending in the longitudinal direction of the cylinder body, and an end part arranged substantially orthogonal to the main body so as to face an end portion of the cylinder body in the longitudinal direction;
• and
• the end part is configured to have a storage portion that is opened on an end surface, of the end part, that faces the cylinder body, the storage portion extending in the longitudinal direction, the storage portion being configured to store dust and dirt therein.