How powerful are the Mya 4 overhead stirrers? The Mya 4 compact stirrers provide powerful stirring, with a high-torque motor. They can easily handle viscous materials. Mya Compact Stirrer – technical specifications: Maximum Speed (intermittent) 1000 rpm Maximum Speed (continuous) 500 rpm Minimum Speed 100 rpm Resolution 1 rpm Torque 16 N·cm Viscosity (max) 60000 mPa·s