Linear motion guide unit with lubricating means

A linear motion guide unit comprising a track rail provided at lengthwise side surfaces thereof with first raceway grooves, a sliding element movable with relative to the track rail and having second raceway grooves confronting the first raceway grooves, a plurality of rolling elements disposed between the sliding element and the track rail, and lubricating means arranged on the sliding element for lubricating the confronting first and second raceway grooves, wherein the lubricating means is comprised of a case attached to the sliding element and arranged riding the track rail astride, a lubricant-containing member accommodated in the case, and rolling applicators supported for free rotation by bearing means in the case in such a manner as to come in contact with the lubricant-containing member while run through the raceway grooves on the track rail, whereby the rolling applicators transfer the lubricant from the lubricant-containing member to the first and second raceway grooves, resulting in lubricating the first and second raceway grooves,

• wherein the lubricant-containing member is of a porous sintered resinous component that is produced by heating finely powdered synthetic resin of ultrahigh molecular weight polymers under pressure in a design mould.