Patent ID: 6210039
Filing Date: 2001-04-03
Classification: F16C

Abstract:
A linear motion guide device comprising:a track rail having a rectangular-shape in section and at least one ball rolling groove formed to both an upper surface and one side surface of the track rail, respectively;a movable block having an L-shape in section, comprising a horizontal portion provided with ball rolling grooves corresponding to ball rolling grooves formed to the upper surface of the track rail and a suspending portion provided with ball rolling grooves corresponding to ball rolling grooves formed to the one side surface of the track rail; anda row of rolling balls disposed to be rollable between corresponding ball rolling grooves formed to the upper surface of the track rail and the horizontal portion of the movable block and between corresponding ball rolling grooves formed to the side surface of the track rail and the suspending portion of the movable block, respectively;wherein each of the ball rolling grooves has a circular-arc-shape in section having a deep-groove shape having a groove depth of approximately 1/3 to 1/2 of a diameter of the rolling ball.