Caterpillar D9

Caterpillar D9
Caterpillar D9
Type	Heavy bulldozer
Manufacturer	Caterpillar
Length	26.5 ft (8.1 m)
Width	14.7 ft (4.5 m) (blade)
Height	13 ft (4.0 m)
Weight	108,000 lb (48,988 kg)
Propulsion	Continuous track
Engine model	CAT C18 ACERT (D9T); 3408 HEUI (D9R);
Gross power	464 hp (346 kW) D9T; 474 hp (353 kW) D9R;
Flywheel power	410 hp (310 kW) D9T; 410 hp (310 kW) D9R; 375 hp (280 kW) D9N; 460 hp (340 kW) D9L;
Drawbar pull	71.6 tons
Speed	7.3 mph (11.7 km/h) Forward; 9.1 mph (14.6 km/h) Reverse;
Blade capacity	17.7 cu yd (13.5 m3) 9 SU blade; 21.4 cu yd (16.4 m3) 9 U blade;

The Caterpillar D9 is a large track-type tractor designed and manufactured by Caterpillar Inc. It is usually sold as a bulldozer equipped with a detachable large blade and a rear ripper attachment.

The D9, with 354 kW (474 hp) of gross power and an operating weight of 49 short tons (44 t), is in the upper end of Caterpillar's track-type tractors, which range in size from the D2 69 kW (92 hp), 9 short tons (8.2 t), to the D11 698 kW (935 hp), 104 short tons (94 t).

The size, durability, reliability, and low operating costs have made the D9 one of the most popular large track-type tractors in the world.