Shakers consume a significant amount of electricity and this energy is highly converted into heat. For this reason, cooling of the field coils and armature coils is mandatory in electrodynamic vibration systems.
DynaLabs small PM and MS shakers with integrated amplifiers (20N and 100N) don’t need external cooling system. Passive cooling is enough (natural convection). But for continuous operation at 20N and 100N forced cooling is suggested. For larger shakers (250N and 440N) a blower is needed.