Patent ID: 7909512

Claim:
A slider used in a linear motion rolling guide unit, comprising a pair of end caps respectively secured to ends of a casing, endless circulating passages which are provided inside the casing and the end caps and in which rolling elements are incorporated and roll, and a lubricating member comprising a body impregnated with a lubricant and attached to either one or both of the end caps, the lubricating member impregnated with the lubricant being in contact with raceway faces of a rail to supply the lubricant to the raceway faces while the rolling elements rolling on the raceway faces to move the slide relative to the rail, comprising: either an embedding portion or a plurality of embedding portions having a recess, and provided in the body of the lubricating member; a saturation holding member embedded in the embedding portion of the body, holding a larger amount of lubricant per unit volume than the lubricant per unit volume held by the body, and having a relationship ensuring that the saturation holding member has a force sucking the lubricant by capillary action or surface tension equal to or smaller than that the body has; wherein the body comprises a blocking member attached thereto for sealing the embedding portion, and the blocking member has either a feed hole or a plurality of feed holes for linking the embedding portion to outside; wherein the blocking member is formed of the same materials as those of the body; and wherein the embedding portion has an open end facing in a sliding direction of the slider.