Used 320c cat excavator hydraulic crawler 21-ton

Used Excavator

Product Detail

Used Caterpillar 320C Hydraulic Crawler Excavator

The Used Caterpillar 320C Hydraulic Crawler Excavator is a classic 21-ton class crawler digger widely trusted for earthmoving, trenching, foundation excavation, and road construction. As one of Caterpillar's most proven mid-size C-series models, the 320C delivers strong breakout force, low failure rate, and dependable cycle performance for daily contractor operations worldwide.

Powered by the original Cat 3066T turbocharged diesel engine (103 kW / 138 hp) and matched with a mature load-sensing hydraulic system, this second-hand 320C offers smooth hydraulic response, reliable digging power, and excellent fuel economy. Fully inspected and well-maintained at Tonkey Machinery's Jinan factory, with original core parts retained, low wear verified, and all filters, fluids, and grease points refreshed prior to export. No major overhaul or structural repairs reported; original service log available.

A reliable and cost-effective choice for global contractors seeking a proven 21-ton hydraulic crawler excavator with strong resale value and worldwide Cat parts support.

Recommended applications: Earthmoving · Trenching · Foundation excavation · Road construction · Municipal engineering · Landscaping

Specifications

Cat 320C — Technical Specifications

Item	Specification
Machine Type	Crawler Excavator (Backhoe)
Operating Weight	20,720 kg (~21 t)
Bucket Capacity	0.8 – 1.2 m³ (Standard 1.0 m³)
Boom / Stick Length	5.4 m / 2.9 m
Engine Model	Cat 3066T
Engine Type	Inline 6-cylinder, water-cooled, turbocharged diesel
Net Rated Power	103 kW (138 hp) @ 2,200 rpm
Displacement	6.0 L
Bore × Stroke	102 × 122 mm
Main Pump Flow	2 × 105 L/min (Total 210 L/min)
Main Relief Pressure	34.3 MPa (350 bar)
Stick Digging Force	120 kN
Bucket Digging Force	140 kN
Max Digging Reach	9,720 mm
Max Digging Depth	6,610 mm
Max Dumping Height	4,770 mm
Transport Dimensions (L×W×H)	9,500 × 2,750 × 2,970 mm
Standard Track Shoe Width	500 mm
Travel Speed (High / Low)	5.5 / 3.5 km/h
Swing Speed	11 rpm
Swing Torque	18.5 kN·m
Fuel Tank	340 L
Hydraulic Tank	145 L