Used Caterpillar 329D2 Excavator

Reading: 2049

Caterpillar 329D2 Hydraulic Excavator Detailed Introduction

The Caterpillar 329D2 is a 29-ton class medium-duty hydraulic excavator under Cat’s D2 product line, upgraded from the classic 329D model to deliver higher fuel efficiency, stronger reliability and lower total operating costs for harsh heavy-duty scenarios. It is widely recognized as a benchmark product in its weight class, balancing outstanding working performance, long service life and user-friendly design.

1. Core Specifications

Category	Parameters
Operating Weight	28,900 – 32,800 kg (63,700 – 72,300 lb), varies by configuration
Engine	Cat C7 ACERT™ inline 6-cylinder diesel engine, meets Tier 3/Stage IIIA/China Non-road Stage III emission standards
Rated Net Power	152 kW (204 hp) at 2,000 rpm
Bucket Capacity Range	1.1 – 1.87 m³ (1.44 – 2.45 yd³)
Hydraulic System	Maximum total pump flow 470 L/min, working pressure 35 MPa
Working Performance (with standard 6.5m boom + 3.2m stick)	Maximum digging depth: 6,810 mm (22 ft 4 in); Maximum digging reach: 10,380 mm (34 ft 1 in); Maximum dumping height: 7,090 mm (23 ft 3 in)
Travel & Swing	Maximum travel speed: 5.5 km/h (3.4 mph); Swing speed: 10.2 rpm; Drawbar pull: 278 kN

2. Key Performance Advantages

Engine Efficiency

The C7 ACERT engine adopts Cat’s proprietary advanced combustion emission reduction technology, paired with a high-pressure common rail fuel injection system for precise fuel control. It is equipped with an automatic idle system and idle shutdown function, reducing unnecessary fuel consumption during standby. Official test data shows that the 329D2 has 7-10% lower comprehensive fuel consumption than the previous 329D, with typical working fuel consumption of 18-25 L/h. Users can also switch between three power modes (High Power, Standard, Economy) to balance power and fuel efficiency according to actual working conditions.

Hydraulic System Performance

It uses Cat’s mature negative flow control hydraulic system, with boom and stick regeneration valves that reduce required pump flow during downward movement of the working device, improving action speed while lowering fuel consumption. The system supports smooth combined actions (e.g., simultaneous swing + boom lift + stick operation), greatly improving operation efficiency for loading, trenching and rock excavation scenarios.

3. Structural Durability & Reliability

The 329D2 is designed for long service life under heavy load conditions:

The X-type full-welded undercarriage frame distributes stress evenly, with strong torsion and deformation resistance, adapting to uneven rock and mining sites.
The boom and stick are made of high-strength alloy steel, with internal reinforced rib plates, and have passed 10,000 hours of extreme load fatigue tests.
The triple-sealed track chain prevents mud and dust from entering, extending the service life of the track assembly by 20% compared to ordinary products; heavy-duty rock track and wide low-ground-pressure track are optional for different ground conditions.
Cat’s proprietary wear-resistant bucket teeth have 30% longer service life than generic products, and are easy to replace.
The self-developed swing motor and reducer have large output torque, and can work stably in plateau, low-temperature and high-dust environments.

4. Operator Comfort & Safety

The cab meets FOPS (Falling Object Protective Structure) Level 2 and ROPS (Roll-Over Protective Structure) Level 2 safety standards, with fully sealed pressurized design, isolating 90% of external dust and noise, and the internal operating noise is less than 75 dB(A).
The fully adjustable suspension seat, low-effort pilot control joystick and multi-adjustable armrest reduce operator fatigue during long hours of work.
The color LCD monitor displays real-time parameters including fuel level, hydraulic oil temperature, engine water temperature and fault codes, making it easy for operators to grasp equipment status.
The high-efficiency air conditioning system has 10 adjustable air outlets and defrosting function, adapting to working environments from -20℃ to 50℃.
Anti-slip walking platforms, handrails and ground-level emergency stop buttons are designed to ensure the safety of operators and maintenance personnel.

5. Maintenance & After-sales Support

All daily maintenance points (oil filter, fuel filter, air filter, oil dipstick, etc.) are arranged at ground-accessible positions, no climbing is required for routine maintenance.
Long maintenance intervals: 500 hours for engine oil and filter replacement, 5000 hours for hydraulic oil replacement, greatly reducing downtime and maintenance costs.
Optional Cat Connect telematics system supports remote monitoring of equipment location, working hours, fuel consumption and fault warnings, helping users realize efficient fleet management.
Caterpillar’s global after-sales network covers more than 180 countries and regions, with fast spare parts supply and professional on-site service support.

6. Typical Applications

The 329D2 can be matched with different working devices to adapt to a wide range of scenarios, including road and bridge construction, real estate foundation excavation, quarry rock loading, open-pit mining stripping, municipal engineering, demolition, forestry logging and material handling. Optional attachments include hydraulic breakers, grapples, rippers, hydraulic shears and clamshell buckets.

It is a preferred choice for construction teams pursuing high return on investment, especially for users who need to operate under long-term heavy load conditions.

Non flooded

No accident

Original product

Used Caterpillar 329D2 Excavator

RELATED PRODUCTS

Caterpillar 320GC

Caterpillar 308E

Caterpillar 307E2

Caterpillar 315D2GC