KEY TECHNOLOGY 409-51 MOTOR GRADERS

The Key Technology 409-51 is a dual-deck grading and sizing shaker conveyor system designed for material classification and separation operations. This used equipment features a robust frame measuring 141 inches in length and 72 inches in width, providing a stable platform for continuous operation. The system incorporates a dual-screen deck configuration with the top deck offering four adjustable screen positions and the middle deck featuring three screen positions, allowing operators to customize screening parameters for various material grades and sizes. Material enters the system through a 66-inch infeed width, enabling efficient bulk loading, while the processed material exits via a 34-inch discharge width. Each screen deck measures 48 inches wide by 24 inches long, providing adequate screening surface area for effective material stratification. The machine utilizes vibration-driven motion to separate and grade incoming material into multiple size fractions simultaneously. This configuration makes the 409-51 suitable for applications including aggregate processing, mineral separation, and recycled material classification. The multi-deck design with variable screen positions enhances operational flexibility, allowing adjustment to different material types and desired output specifications. Note that this particular unit does not include motor or screens, requiring separate procurement and installation before operation. The 409-51 represents a cost-effective solution for operations requiring scalable material processing capabilities with customizable sizing options.