How to Select Adhesives for Bonding Motor Magnets & Magnet Segments — Reliable Bonding Solutions for High-Speed Motors
Why Do Motor Magnets/Magnet Segments Require Specialized Adhesives? In permanent magnet synchronous motors (PMSM), brushless DC motors (BLDC), servo motors and robot joint motors, magnets (magnet segments) are generally fixed onto the inner wall of rotors. As motors evolve toward higher power density, higher rotational speed and miniaturization, magnet bonding materials must deliver sufficient bonding strength while maintaining stable performance under high centrifugal force, high-temperature cycling and long-term vibration. Insufficient bonding performance may lead to: ■ Magnet detachment ■ Rotor unbalance ■ Increased motor noise ■ Reduced output torque ■ Failure during high-speed operation ■ Shortened motor service life Therefore, magnet bonding adhesive has become a critical material affecting reliability in motor manufacturing. Required Performance Specifications for Magnet & Magnet Segment Adhesives Motor Magnet Adhesive High…
