| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin composition for fixing a rotor which can achieve a rotor core having excellent long term reliability, even in an environment of rotating at high speed for a long time under high temperature.SOLUTION: The resin composition for fixing is used for formation of a fixing member 130 constituting a rotor 100 including a rotor core 110 provided with a hole 150, a magnet 120 inserted into the hole 150, and the fixing member 130 provided in a spacing part 140 between the hole 150 and the magnet 120, and contains a thermosetting resin (A), a hardener (B), and an inorganic filler (C). The resin composition for fixing is injection molded using a molding machine and a molding of the resin composition for fixing is prepared, and then the molding is hardened and immersed into ATF. When the weight of the hardened matter before immersion into ATF is X1, and the weight of the hardened matter after immersion into ATF is X2, weight change rate calculated by (X2-X1)/X1×100 is -0.05% or greater and 0.5% or less. |
