HIGH SPEED ROTATING TESTER

摘要

PROBLEM TO BE SOLVED: To attain higher speed rotation of a rotor housing a sample and the time prolongation of high speed rotation and to control temperature of the rotor at the time of high speed rotation. SOLUTION: A high speed rotating tester is provided with the rotor 1 having a hole part for housing a prescribed sample, a spindle 2 to be joined to the rotor 1, a torque impressing means 3 for impressing prescribed torque to the spindle 2 and a frame body 4 for hermetically sealing the rotor 1. The frame body 4 is provided with a pressure reducing means 5 and a holding means 6 for holding the spindle 2. The holding means 6 has a bushing 71 for supporting the spindle 2 and a bushing supporting member 72 for supporting the bushing 71 by being inserted thereinto. An inside diameter of at least one of the bushing supporting member 72 is formed to be larger than an outside diameter of the bushing 71 and thereby the bushing supporting member 72 supports the bushing 71 with freely rotating.