Cat® 320D Medium Hydraulic Excavator

Basic Machine Parameters

[Dimensions & Weight] Overall Length 9460mm × Width 2980mm × Height 3010mm, Operating Weight 20930kg (standard undercarriage, 600mm single-grouser track shoes, 5.7m standard boom + 2.9m standard stick, 1.0m³ earth bucket, standard configuration only, excluding all optional accessories)

I. Standard Configuration

Powertrain

Equipped with Cat C6.4 ACERT inline six-cylinder turbocharged water-cooled diesel engine, displacement 6.37L, rated net flywheel power 103kW @ 2000rpm, peak torque 540N·m. HEUI high-pressure common rail electronic fuel injection with ACERT exhaust aftertreatment, complying with China National Stage III, EU Stage IIIA & US Tier3 off-road emission standards.
Dual cross-sensing variable displacement piston hydraulic pumps, no mechanical gearbox. Travel motors integrate oil-immersed wet multi-disc parking brakes with independent left & right travel brake locks; braking system complies with ISO 10265 safety standard for construction machinery. Standard fully automatic hydraulic track tensioner & viscous clutch temperature-controlled cooling fan.

Hydraulics & Working Equipment

Dual-pump cross-sensing hydraulic system, max single pump flow 205L/min, 120L hydraulic oil tank, total hydraulic system capacity 260L. Equipped with boom & stick regeneration energy-saving circuit, travel shock-absorbing valves, electronic real-time main circuit pressure monitoring and three-stage suction & return oil filtration system.
Standard 5.7m boom + 2.9m stick with 1.0m³ general earth bucket. Bucket breakout force 140.1kN, stick breakout force 106.4kN, maximum dump height 6700mm, maximum digging depth 6360mm, no front dozer blade, swing speed 11.5rpm.

Machine Configuration

Fully enclosed shock-absorbing ROPS/FOPS safety cab with rollover & falling object protection. Standard automatic constant temperature air conditioner, suspended high-back shock absorption operator seat and color LCD fault code monitor display. Full 24V DC electrical system with real-time audible & visual alarms for engine load, coolant temperature, oil pressure, hydraulic oil temperature and main pump pressure.
Standard medium undercarriage, factory-fitted 600mm single-grouser steel track shoes, minimum rear swing radius 2780mm, dual-speed max travel speed 5.7km/h, gradeability 35°, ground contact pressure 60kPa.

Service Capacities

Engine oil: 30L
Total hydraulic system oil: 260L
Travel motor gear oil: 8L per side
Swing motor gear oil: 8L
Coolant: 25L
Fuel tank capacity: 345L

II. Optional Configuration (Dimension & Weight Increment Marked for Each Item)

Cab Options

1. Remote central door lock: +5kg weight, unchanged overall dimensions
2. Proportional multi-function pilot control levers: +8kg weight, unchanged overall dimensions
3. On-board Bluetooth radio audio system: +6kg weight, unchanged overall dimensions
4. Heated & ventilated seat + electrically heated rearview mirrors: +12kg weight, unchanged overall dimensions
5. Single-side rearview monitoring camera: +3kg weight, unchanged overall dimensions
6. High-strength steel protective window mesh: +22kg weight, width +40mm, height unchanged
7. Foldable sunshade protective canopy: +36kg weight, overall height +240mm

Travel & Undercarriage Options

1. Reinforced heavy-duty hydraulic travel motors: +22kg per side, total weight +44kg, unchanged dimensions
2. Multi-stage heavy-duty dust-proof air cleaner: +15kg weight, overall height +50mm
3. Sealed low-temperature cooling preheating kit for frigid regions: +22kg weight, unchanged dimensions
4. Widened 700mm double-grouser track shoes (replacement for standard 600mm tracks): overall width +100mm, total weight +180kg
5. Extended long L-type undercarriage assembly: overall length +330mm, +132kg weight

Working Equipment Options

1. Dual-circuit auxiliary hydraulic piping for hydraulic breakers: +16kg weight, unchanged dimensions
2. Narrow trenching bucket (replacement for standard earthmoving bucket): -42kg weight, unchanged overall length
3. Reinforced heavy rock bucket (replacement for standard earthmoving bucket): +68kg weight, unchanged overall length
4. Extended 6.3m boom / 3.5m stick (replacement for standard 5.7m boom + 2.9m stick): overall length +620mm, +125kg weight
5. Thickened wear-resistant bucket teeth & side guard assembly: +28kg weight, unchanged dimensions
6. Auxiliary hydraulic piping for demolition long front: +20kg weight, overall length +800mm, +160kg weight

Safety & Special Site Options

1. ID chip anti-theft immobilizer system: +5kg weight, unchanged overall dimensions
2. Remote fault diagnosis & program calibration module: +8kg weight, unchanged dimensions
3. All-weather high-brightness LED auxiliary work light group: +14kg weight, overall height +60mm
4. -40°C ultra-low temperature cold start preheating kit: +12kg weight, unchanged dimensions
5. Reinforced thickened boom frame: +112kg weight, overall length +70mm
6. Complete mine heavy-duty wear-resistant steel tracks: overall width +100mm, +210kg weight
7. Full-machine full-coverage anti-collision protective frame: +50mm width on each side (total width +100mm), +215kg weight