Used Komatsu 70-8 Excavator

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Komatsu PC70-8 Crawler Excavator Detailed Introduction

The Komatsu PC70-8 is a 7-ton class compact crawler excavator developed and manufactured by Komatsu Ltd., the world-leading Japanese construction equipment manufacturer. As an upgraded iteration of the previous PC70-7 model in Komatsu’s 8-series excavator lineup, it is designed for high versatility, low operational cost and strong durability, making it a top-selling model in the small excavator segment for narrow and medium-duty job sites.

1. Core Specifications

(Note: Parameters may vary slightly by regional versions and optional configurations)

Item	Specification
Operating Weight	6,800 – 7,180 kg
Engine Model	Komatsu SAA4D95LE series (Tier 3/Stage IIIA for standard versions; Tier 4 Final/Stage V/China IV compliant for updated variants)
Rated Power	48.5 kW @ 2,050 rpm
Standard Bucket Capacity	0.3 m³, optional 0.25–0.38 m³ (earthwork/rock/narrow bucket)
Max. Digging Depth	4,080 mm
Max. Digging Height	7,150 mm
Max. Dumping Height	5,010 mm
Max. Digging Radius	6,360 mm
Swing Speed	11 rpm
Travel Speed	2.8 km/h (low) / 4.8 km/h (high)
Gradeability	70% (35°)
Hydraulic System Working Pressure	34.3 MPa

2. Key Features & Advantages

2.1 High Efficiency & Low Fuel Consumption

Equipped with Komatsu’s proprietary electronically controlled engine and HydrauMind load-sensing hydraulic system, which supplies oil on demand to reduce energy loss. Its fuel efficiency is 10–15% higher than the older PC70-7 model.
3 optional working modes match different job demands:
- Power Mode: For heavy-duty digging and hard ground operation
- Economy Mode: For daily light and medium work to cut fuel cost
- Lifting Mode: For stable and safe lifting of construction materials
Auto idle and auto shutdown function further reduces unnecessary fuel waste during long idle periods.

2.2 Smooth & Precise Hydraulic Performance

Optimized hydraulic valve design ensures excellent coordination of compound actions (simultaneous digging, swinging and traveling operation without lag).
Short working cycle time: The fast arm retraction speed improves working efficiency by around 8% compared to peers in the same class.
Pre-reserved auxiliary hydraulic pipelines are available for quick installation of attachments such as breakers, grapples, rippers and quick couplers.

2.3 Outstanding Durability & Reliability

Reinforced boom, arm and undercarriage frame with extra rib plates at high-stress points, adapted for harsh construction environments.
Sealed and lubricated track chains prevent sand and mud intrusion, extending track service life by 20% under normal use.
3-stage fuel filtration system and high-precision hydraulic oil filtration system effectively reduce wear of core components.
Built-in ECM real-time monitoring system sends early fault warnings to cut down unexpected downtime.

2.4 Operator Comfort & Safety

ROPS/FOPS certified enclosed cabin guarantees operator safety in case of rollover or falling object impacts.
Large-area panoramic glass reduces blind spots by 15% compared to previous models, with clear view of the bucket and surrounding job sites.
Adjustable suspension seat and low-effort pilot control joysticks reduce operator fatigue during long-hour work.
Low noise design: Cabin internal noise is controlled at 72 dB(A), with high-performance air conditioning system and multiple storage spaces, cup holders and USB charging ports for improved user experience.

2.5 Easy Maintenance & Management

All routine service points (oil filters, fuel filters, air filters, hydraulic oil check points) are designed with ground-level access, no need to climb onto the machine for regular maintenance.
Parallel radiator structure is easy to clean dust and debris, suitable for dusty construction sites.
Optional Komatsu KOMTRAX telematics system supports remote monitoring of equipment location, working hours, fuel consumption and fault codes, which facilitates fleet management and anti-theft.

3. Typical Applications

The PC70-8 is widely used in scenarios including:

Urban municipal works: Trench digging for pipelines/cables, road maintenance, landscaping planting
Rural construction: Farmland renovation, irrigation ditch digging, rural housing construction
Small demolition works: Matched with breakers for small building demolition and construction waste recycling
Site preparation: Land grading, small pond digging, site clearing
Material handling: Grabbing sand, wood and lifting small construction materials

4. Optional Configurations

Customized buckets (rock bucket, narrow bucket, grid bucket)
Hydraulic quick coupler
Breaker/shear auxiliary pipelines
Rubber track pads or full rubber tracks (for road-friendly operation without damaging pavement)
Front dozer blade (for site leveling and operation stability improvement)
Reversing camera, heated seat
KOMTRAX remote management system

Non flooded

No accident

Original product

Used Komatsu 70-8 Excavator

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