Caterpillar offers undercarriage systems to propel machinery over various terrains and through operational challenges. Suitable for use in the logging/forestry, mining, agriculture, and material handling industries, undercarriage systems are customized to integrate with existing machines. Track arrangements can be custom-built to specification, including optional final drives such as increased drawbar pull, open or closed loop motors, and final drive towing disconnects; variable gauge lowers that use expandable carbodies to provide stable work platforms; and track roller frames that offer different mounting options, including bolting or welding to the frame, or an oscillating design that can be mounted to the upper structure.