THE VERTICAL ROLLER BEARING ASSEMBLY FOR MEASURING COEFFICIENT OF FRICTION BETWEEN MATERIALS

摘要

A vertical roller bearing assembly for evaluating frictional coefficients between materials is provided to improve a washer for supporting a roller bearing into a ball bearing type, thereby minimizing a frictional force between the roller bearing and the washer. A roller bearing supports one side of a test body in order to confirm a frictional coefficient caused by movement between cargos loaded inside a ship, when the ship moves. A washer(200) is contacted with both sides of the roller bearing, and is supported thereon. The washer is comprised in ball bearing type. A hemisphere-shaped ball groove whose inside is hollow is formed on one surface of the washer. A sphere-shaped ball is inserted into the ball groove. A structure for preventing a ball from being separated from the ball groove is fixed to a surface of the washer.