CAT 300.9D Micro Excavator

Information

Additional information

Make	Caterpillar
Model	300.9D
Weight	0.9 t

Equipment Overview

The CAT 300.9D is a sub-1-tonne mini excavator built for jobs where a standard-sized machine simply won’t fit, sitting at the entry point of Caterpillar’s mini excavator range below models like the 301.5. At an overall width of just 730 mm and an operating weight from 935 kg (985 kg with the ROPS safety frame fitted), it’s suited to indoor demolition, tight residential sites and any job that has to go through a standard doorway or side gate.

Power comes from a Yanmar 31NV70 engine, a water-cooled 3-cylinder diesel rated at 13.7 kW gross (9.6 kW at the flywheel) at 2,100 rpm, meeting EPA Tier 4 Final and EU Stage V emissions standards. Rubber tracks are driven through a pair of gear pumps, and the undercarriage extends hydraulically while a fold-out dozer blade widens the machine’s stance for stability once it’s through the narrow opening it was built to clear. Auxiliary hydraulics for a hammer come standard, run down to the stick to keep hose lengths short.

Technical Specifications

Specification	Value
Engine	Yanmar 31NV70, water-cooled 3-cylinder diesel
Power Output	13.7 kW gross (9.6 kW flywheel) @ 2,100 rpm
Max Torque	NA
Emission Standard	EPA Tier 4 Final / EU Stage V
Transmission	Hydrostatic (2 gear pumps)
Drive Type	Rubber belt track, 180 mm wide, extending undercarriage
Operating Weight	935 kg (without safety frame) / 985 kg (with safety frame)
Digging Depth	1,731 mm
Bucket Capacity	250 mm, 350 mm and 700 mm
Reach	3,074 mm (3,023 mm at ground level)

Dimensions

Dimension	Value
Length (transport, arm lowered)	2,746 mm
Width	730 mm (711 mm retracted / 864 mm extended undercarriage)
Height	1,507 mm (ROPS folded) / 2,276 mm (ROPS raised)
Undercarriage Length	1,220 mm
Tail Swing Radius	736 mm