Refinements made to the hydrostatic drive line enable improved performance and fuel economy. An optional variable/reversible pitch Flexxaire engine mounted fan further contributes to energy efficiency in cooler climates by automatically matching the fan blade pitch to cooling requirements.

The next generation IQAN control system has improved functionality and a simpler, more intuitive user interface. The arch has been redesigned for improved visibility, more powerful arch holding force and quicker cycle time.

Inside the cab, the 620D is equipped with Turnaround™. The revolutionary rotating seat has a two-position mechanical lock providing full rear-facing drive capability. The steering wheel has been replaced with an armrest mounted joystick for improved ergonomics. Drive pedals are located at both the front and rear of the cab. Combined with Tigercat’s hydrostatic driveline, Turnaround allows the operator to travel in reverse while comfortably facing the rear. The full speed range is available, whether in forward or reverse.

The D-series are the most efficient, high production and operator friendly skidders ever produced by Tigercat.