Used Caterpillar 306 Excavator

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Detailed Introduction to Caterpillar 306 Excavator

The Caterpillar 306 (officially designated as Cat 306 CR in the latest next-generation product lineup) is a 6-ton class compact hydraulic excavator developed and manufactured by Caterpillar Inc., the global leader in construction and mining equipment. It is tailored to balance power, maneuverability, versatility and low operating cost, and is one of the best-selling small excavator models in global markets.

1. Core Specifications

Item	Parameter
Operating Weight	5795 – 6120 kg (12,776 – 13,492 lb, varies by track type and attachment configuration)
Engine	Cat C2.4 turbocharged 4-cylinder diesel engine, meets EU Stage V / US Tier 4 Final emission standards for developed markets, and adaptive low-emission configurations for emerging markets
Net Rated Power	41.5 kW (55.6 hp) at 2200 rpm
Hydraulic System	Load-sensing system, max flow 2×96 L/min (25.4 gpm), max operating pressure 280 bar (4060 psi)
Digging Force	Bucket digging force: 50.6 kN (11,375 lbf); Arm digging force: 33.2 kN (7,463 lbf)
Working Range	Max digging depth: 3980 mm (13 ft 1 in); Max ground-level reach: 6270 mm (20 ft 7 in); Max dump height: 4170 mm (13 ft 8 in)
Travel Performance	2-speed travel: 2.4 / 4.5 km/h (1.5 / 2.8 mph); Gradeability: 30° (58%)

Note: Earlier generations (306D, 306E2) have slightly lower power and fuel efficiency than the new 306 CR.

2. Performance Highlights

High efficiency & low fuel consumption: The matching of the high-torque C2.4 engine and Caterpillar proprietary intelligent hydraulic system reduces fuel consumption by up to 15% compared to the previous 306E2 model, without sacrificing digging performance. It can maintain stable output even in high-altitude (above 3000m) or 45°C high-temperature working conditions.
Narrow site adaptability: Standard 70° left / 55° right boom offset function supports excavation and trimming operations close to walls, foundations and obstacles, making it ideal for narrow urban construction sites. Its compact body width of only 1980mm allows it to pass through narrow roads and residential entrances easily.
Rich attachment compatibility: It supports over 20 types of Caterpillar original attachments including breakers, augers, grapples, tiltrotators, and multi-spec buckets. The standard hydraulic quick coupler allows operators to switch attachments in less than 30 seconds without leaving the cab, greatly expanding applicable scenarios.

3. Durability & Reliability

All core structural components (boom, arm, undercarriage frame) are made of thickened high-strength wear-resistant steel, with full robotic welding joints, and have passed more than 10,000 hours of extreme heavy-load test verification, with a service life 20% longer than similar products in the same class.

Users can choose between rubber tracks (low noise, no damage to paved roads) and heavy-duty steel tracks (high wear resistance for rough sites), both with sealed track chains to extend maintenance intervals.
Standard full-coverage engine guard and hydraulic line protective components effectively avoid damage from falling debris and sharp obstacles on construction sites.

4. Operator Comfort & Safety

The cab meets global ROPS/FOPS safety protection standards, with a fully sealed pressurized design to block dust and reduce noise, and the interior operating noise is controlled below 75 dB(A).
It is equipped with an adjustable shock-absorbing suspension seat, automatic constant temperature air conditioning, and ergonomic low-force pilot control joysticks with adjustable sensitivity, which greatly reduces fatigue during long shifts.
A 7-inch high-definition touch screen displays real-time operating data (fuel level, working hours, fault alerts, etc.), and a standard high-definition rearview camera eliminates reversing blind spots.

5. Maintenance & Cost Advantage

All routine maintenance points (oil filter, fuel filter, air filter, hydraulic oil detection port) are designed to be accessible at ground level, eliminating the need to climb the machine for daily inspection, reducing routine maintenance time by 30%.
Extended service intervals: engine oil change every 500 working hours, hydraulic oil and filter replacement every 3000 working hours, greatly reducing downtime and maintenance costs.
Optional Caterpillar Product Link telematics system supports remote monitoring of equipment location, fuel consumption, working status and fault alarms, realizing predictive maintenance and avoiding unplanned shutdowns.

6. Common Application Scenarios

The Cat 306 excavator is suitable for a wide range of operation scenarios:

Urban construction: foundation excavation, pipeline laying, landscaping, residential renovation
Road works: cable/water pipe trench digging, roadside trimming, small earthmoving
Agricultural operations: farmland improvement, orchard planting, greenhouse construction
Small demolition: small building demolition, waste handling with a breaker
Municipal works: sewer maintenance, snow removal, public facility construction

It is the preferred equipment for individual contractors and small construction fleets worldwide, supported by Caterpillar's global after-sales service and spare parts supply network.

Non flooded

No accident

Original product

Used Caterpillar 306 Excavator

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