60 Ratio Special Cast Aluminum AC Gear motors have a 60:1 speed ratio made from special cast aluminum, which means that the aluminum has been given a special feature or treatment to improve performance, durability, or other unique characteristics. Geared motors are designed to provide higher torque at lower speeds, making them suitable for applications requiring strength and power. Aluminum is known for its good thermal conductivity, aiding in the dissipation of heat generated during operation