These machines that cut trees are called Feller Bunchers.
Know some specifications of this equipment:
Engine: 141 kW (189 hp);
Transmission: infinitely variable hydrostatic with two-speed gearbox;
Wheelbase: 2794 mm (110 in);
Fast ground speed and saw recovery;
Durable and reliable hydraulic and electric plumbing;
Best cooling and fuel efficiency system;
Heavy axles work under the most difficult circumstances.