Used Caterpillar 320 Excavator

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Caterpillar 320 Crawler Excavator Detailed Introduction

The Caterpillar 320 is a class-leading 20-ton class medium crawler excavator developed and manufactured by Caterpillar Inc., the global top-tier construction machinery manufacturer. It is one of the best-selling and most trusted models in its segment, balancing power, fuel efficiency, durability and operator comfort to adapt to diverse heavy-duty working scenarios. It has multiple variants including the standard performance-focused 320, cost-effective 320GC for light-to-medium duty tasks, and high-power 320GX for extreme working conditions.

Core Specifications (Standard Next-Gen 320)

Parameter	Details
Operating Weight	19,800 – 22,000 kg (varies by configuration)
Engine Model	Cat C4.4 ACERT™ turbocharged intercooled diesel engine
Gross Power	108 kW (145 hp) @ 2,200 rpm
Standard Bucket Capacity	0.8 – 1.2 m³
Maximum Digging Depth	6,710 mm
Maximum Horizontal Digging Reach	9,850 mm
Maximum Bucket Breakout Force	154 kN
Travel Speed	3.1 – 5.5 km/h
Gradeability	35° (70%)
Swing Torque	69 kN·m

Key Features

1. Power System

The Cat C4.4 engine meets multiple emission standards including EU Stage V, U.S. EPA Tier 4 Final, and Stage IIIA for emerging markets. It is equipped with electronic high-pressure common rail fuel injection technology and a high-efficiency cooling system:

Operates reliably at altitudes up to 3,000 m without power derating
Adapts to ambient temperatures ranging from -32°C to 49°C, with a built-in cold start preheating system for harsh winter conditions
Delivers up to 25% lower fuel consumption compared to the older generation 320D2 model, without sacrificing working productivity

2. Advanced Hydraulic System

It is fitted with Caterpillar’s proprietary Adaptive Hydraulics (AAH) system:

Load-sensing and flow compensation technology ensures smooth simultaneous operation of boom, arm, bucket and swing functions with zero response lag
Only delivers required hydraulic flow for current tasks, reducing unnecessary energy loss
High swing torque enables stable, fast rotation even on slopes or when carrying full bucket loads

3. Ultra-High Structural Durability

All core structural components are designed for 10,000+ hours of heavy-duty operation:

Main frame, boom and arm are made of high-tensile steel, with 100% non-destructive testing (NDT) to resist impact and fatigue
Sealed and lubricated undercarriage with hardened track links, rollers and idlers extends service life by 30% in abrasive working conditions (e.g. quarries, demolition sites)
Standard bucket is fitted with replaceable high-chromium wear plates and hardened teeth, suitable for digging rock, concrete debris and clay

4. Operator Comfort & Safety

The ROPS/FOPS certified cab guarantees maximum safety against rollover and falling object impacts:

72 dB(A) ultra-low interior noise level, equivalent to an ordinary office environment
High-back air-suspension seat with adjustable lumbar support, armrests and optional heating function
Ergonomic low-force joysticks reduce operator fatigue during 8+ hour shifts
8-inch high-resolution touchscreen displays real-time working data, fault alerts and rearview camera feed
High-efficiency climate control system with 10 adjustable air vents for extreme weather conditions

5. Intelligent Technologies

The next-gen 320 is equipped with standard Cat Connect smart features:

Standard 2D Grade Assist: automatically adjusts boom and arm movements to reach target digging depth and slope, cutting rework by 45%
Optional 3D Grade Assist, on-board payload weighing system, and object detection function for higher work accuracy
Cat Product Link™ remote monitoring system: allows fleet managers to track working hours, fuel consumption, fault codes and maintenance schedules via mobile app or web platform
Auto idle shutdown function cuts unnecessary fuel waste during long idling periods

6. Low Maintenance Cost

All daily maintenance points (fuel filter, oil filter, air filter, coolant port) are accessible at ground level, no need to climb onto the upper structure for routine checks
Extended service intervals: engine oil & filter change every 500 working hours, hydraulic oil change every 5,000 hours, air filter replacement every 1,000 hours under normal working conditions
Total lifecycle maintenance cost is 20% lower than similar models in the same segment, supported by Caterpillar’s global 24/7 dealer service network and genuine spare parts supply

Typical Applications

The Cat 320 is compatible with a wide range of work tools (hydraulic breakers, grapples, augers, rippers, compaction plates) and is suitable for:

Road & bridge construction, building foundation excavation
Municipal engineering, landscaping, pipeline laying
Quarry mining, material loading, small-scale demolition
Water conservancy projects, disaster relief work

It is renowned for its high resale value, long service life and strong adaptability, making it the top choice for construction contractors, rental companies and owner-operators worldwide.

Non flooded

No accident

Original product

Used Caterpillar 320 Excavator

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