TRACK SCREENS, Sandvik QE442, ? 6' x 18', ? 992, ? 81,725, Sandvik QE442 is the largest in the heavy-duty range of tracked mobile scalpers. Designed for the large-scale aggregate producer, it is reliable, versatile and boasts high throughput, with the fines conveyor alone able to handle up to 900 TPH., The photos are Sandvik model photos,, customers to Call for photos and we can update as needed.