Linear guideway

A linear guideway, comprising:

• a rail having two lateral surfaces being opposite to each other;
• a sliding module slidably disposed on the rail along a sliding direction and including:
• a slider including a base portion and two lateral portions that extend from the base portion, wherein inner sides of the two lateral portions of the slider respectively face toward the two lateral surfaces of the rail;
• two circulation seats respectively assembled to the two lateral portions and respectively arranged adjacent to the two lateral surfaces, wherein each of the two circulation seats has two rolling channels and includes:
• two turning segments respectively protruding from two assembling end surfaces of the slider, wherein each of the two turning segments has a layout surface arranged adjacent to a corresponding one of the two assembling end surfaces and an oil multi-channel that is recessed in the layout surface and that is connected to two of the rolling channels;
• two outer rail segments inserted into a corresponding one of the two lateral portions of the slider, wherein two ends of each of the two outer rail segments are respectively connected to the two turning segments;
• and
• two inner rail segments located between the corresponding lateral portion of the slider and the corresponding lateral surface of the rail, wherein two ends of each of the two inner rail segments are respectively connected to the two turning segments;
• wherein, in each of the two circulation seats, each of the two outer rail segments is connected to one of the two inner rail segments through the two turning segments so as to jointly define one of the rolling channels;
• and
• a plurality of rollers assembled in the two circulation seats and movably arranged in the rolling channels of the two circulation seats;
• two end caps respectively fixed to the two assembling end surfaces of the slider, wherein each of the two end caps has an oil injection channel, and wherein two of the turning segments respectively belonging to the two circulation seats are disposed in one of the two end caps and enable the two oil multi-channels thereof to be connected to the oil injection channel of the corresponding end cap;
• and
• a plurality of dust-proof members that respectively correspond in position to the two circulation seats and that respectively abut against the two lateral surfaces of the rail, wherein each of the dust-proof members is arranged along the sliding direction and has two distal portions respectively protruding from the two assembling end surfaces of the slider, and wherein the distal portions of the dust-proof members protruding from any one of the two assembling end surfaces are inserted into one of the two end caps, and each of the dust-proof members is slidable along the sliding direction relative to the two end caps and the sliding module.