No. 405 Universal Sand Strength Machine. NO. 405A Universal Sand Strength Machine (High range) This is a motordriven deadweight pendulum instrument featuring uniform loading rates and extended ranges for green and dry testing of foundry sands. The base machine without accessories, covers three compressive strength ranges: psi ( kg/cm²) for testing green core sands; .
Speed Control AC Motors Gear Motors. AC speed control motors and gear motors allow for the motor speed to be changed. By combining an AC motor with a dedied control circuit speed changes can be performed. A broad lineup of AC motors gear motors that can easily be used for speed control is available. 6 W (1/125 HP) up to 3 HP.