The CATERPILLAR 637D (4JB) scrapers are a powerhouse in the construction industry, known for their exceptional performance and durability. With a massive 37 cubic yard capacity, these machines are designed to handle the toughest jobs with ease. The 4JB model features a reliable Caterpillar engine, providing ample power to move large volumes of material efficiently. Equipped with advanced technology such as load sensing hydraulics and automatic cushion hitch control, these scrapers offer precision and control for maximum productivity on the job site. Whether tackling earthmoving projects or site preparation, the CATERPILLAR 637D (4JB) scrapers are a top choice for contractors looking for reliable and high-performing equipment.