The 536-hp (399.7-kW) CAT C13B engine provides the horsepower needed for processing difficult materials, and is backed by worldwide service and support for maximum productivity. With a feed opening of 42 in x 60 in and robust infeed sidewalls that are double the strength of its predecessor, you can feed whole trees and other large material with less restriction. The feed roller is equipped with aggressive teeth, coupled with down pressure, that provide pull in power and maintain control of the material being fed to help get the job done efficiently. Maximize feedability with low side walls, providing optimal flow of material and minimizing operator interaction. Optimize productivity and flexibility when operating the grinder with these two features: An industry-leading (or technologically-advanced), full-function, wireless remote control lets you, from the cab, adjust machine settings as conditions change, including control of the infeed settings, engine droop, conveyor height and more. The 7-in onboard color touch screen display shows machine data and allows you to intuitively set up the machine for maximum efficiency.