Industry:
Advanced Aluminum Manufacturing
CMAA Classification:
Class F Service
Power Supply:
460 VAC
Location:
Tennessee
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Project Description:
A custom 30-ton ingot handling crane was engineered and installed to support aluminum casting and rolling operations in Tennessee. The crane is a three-motion, top-running, double girder bridge design built to CMAA, ANSI/ASME, OSHA, and NEC standards, rated for continuous severe service under CMAA Class F.
The system spans 75 feet with a 15-foot lift height and operates indoors in an environment ranging from 60°F to 160°F. Bridge travel reaches 400 feet per minute, powered by dual 100 HP motors with variable frequency drives for precise control.
The built-up trolley hoist is designed for high performance, operating at 75 feet per minute with a 250 HP motor using flux vector control. A direct reeving system connects to a motorized ingot lifter with four ropes in a two-part double arrangement for safe and efficient ingot handling. Safety features include overload limit sensors and collision avoidance on both sides of the crane.
Operator controls include an enclosed cab with a J.R. Merritt chair and Cattron radio remote control, along with audible warnings and LED status lights for visibility.
The crane was fully assembled, load-tested, and commissioned to meet the heavy-duty requirements of aluminum ingot production and rolling operations.