| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear motion guide device which can adjust frictional resistance in response to a load and further improve the durability. SOLUTION: Frictional resistance adjust contact parts 41, 41 for adjusting the frictional resistance automatically in response to the load by contacting at two points partially respectively against a pair of slant surfaces 81, 81 of the engage groove 8 formed on the roller rolling surfaces 5, 6 are provided on the annular projection 41 of a roller 4. The friction resistance adjust contact parts 41, 41 are contacted shallowly between the slant surfaces 81, 81 of the engage groove 8, when the load is small, so as to maintain small frictional resistance, and when the load is increased, it is ingrown deepth between the slant surfaces 81, 81 of the engage groove 8 so as to increase the frictional resistance.
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