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 hydraulic excavator developed and manufactured by Komatsu, a world-leading construction equipment manufacturer. Positioned between mini excavators and medium-sized excavators, it combines flexible maneuverability and reliable heavy-duty operation capability, making it a highly popular model for small and medium-sized construction projects.

Key Specifications

Item	Parameter
Operating Weight	6,750 – 7,100 kg (depends on configuration)
Rated Net Power	48.5 kW (65 HP) @ 2,050 rpm
Standard Bucket Capacity	0.3 – 0.38 m³
Max Digging Depth	4,080 mm
Max Digging Height	7,150 mm
Max Dumping Height	5,020 mm
Max Horizontal Digging Reach	6,260 mm
Travel Speed	2.8 / 4.5 km/h (low/high speed)
Swing Speed	11 rpm
Gradeability	35° (70%)

Core Features

1. High-Efficiency & Low-Consumption Powertrain

The PC70-8 is powered by Komatsu's proprietary SAA4D95LE-5 4-cylinder water-cooled diesel engine, compliant with EU Stage IIIA / US EPA Tier 3 emission standards. It adopts high-pressure common rail fuel injection technology and an optimized exhaust gas recirculation (EGR) system to reduce harmful emissions while ensuring stable power output under heavy load.It is equipped with two selectable working modes:

Power (P) mode: For high-efficiency heavy-duty operations such as rock excavation
Economy (E) mode: For light-load tasks, cutting fuel consumption by 10%-15% compared to the previous generation PC70-7The automatic idle shutdown function further reduces unnecessary fuel waste during standby.

2. Precision Hydraulic System

It is fitted with Komatsu's exclusive Closed-center Load Sensing System (CLSS), which dynamically adjusts hydraulic flow distribution according to actual operational demands. It ensures smooth and coordinated composite actions (such as simultaneous boom lifting, arm swinging and bucket curling) without lag or jitter, making it suitable for fine operations such as precision trenching and landscaping. The optimized hydraulic circuit reduces pressure loss, improving operation efficiency while lowering energy consumption.

3. Operator Comfort

The fully sealed, pressurized cab is filled with sound-insulating materials, keeping internal noise as low as 72 dB(A) for a quiet working environment. It is equipped with:

High-back adjustable suspension seat that reduces vibration during long-time operations
Ergonomically arranged pilot control levers with moderate resistance to reduce hand fatigue
Large LCD monitor displaying real-time operating data, fault alerts and maintenance reminders
High-performance air conditioning system and wide field of view to improve working experience

4. High Reliability & Easy Maintenance

Main structural parts (boom, arm, undercarriage frame) are made of high-strength wear-resistant steel with reinforced welding joints, adapting to harsh working conditions such as demolition and rock excavation
Undercarriage components (track shoes, carrier rollers, idlers) are processed with special heat treatment, extending service life by 20% compared to similar models
All daily maintenance points (oil filters, fuel filters, air filter, hydraulic oil filling port) are accessible from the ground, shortening maintenance time greatly
Long service intervals: 500 working hours for engine oil replacement, 5,000 working hours for hydraulic oil replacement, reducing long-term operating costs

5. Intelligent Management

It comes factory-fitted with Komatsu's exclusive KOMTRAX remote monitoring system. Owners and fleet managers can track real-time equipment location, working hours, fuel consumption and fault codes via mobile phone or computer. It also supports anti-theft alerts and regular maintenance reminders, helping users realize scientific equipment management.

Typical Applications

The PC70-8 is widely used in multiple scenarios:

Municipal engineering: Trenching for pipeline laying, road repair, public facility construction
Landscaping: Tree pit digging, site leveling, landscape shaping
Agricultural construction: Farmland renovation, irrigation ditch excavation, rural infrastructure building
Small construction sites: Foundation excavation, construction material transfer, site clearing
Special operations: Can be fitted with breakers for small demolition works, or augers, grapples for diversified tasks

Optional Attachments

Different types of buckets: Standard earthmoving bucket, heavy-duty rock bucket, narrow trench bucket
Auxiliary hydraulic piping for breakers, augers and other attachments
Quick coupler for fast attachment replacement (cuts replacement time to less than 1 minute)
Heavy-duty dozer blade for site leveling and backfilling
FOPS/ROPS certified cab protective net for demolition and forestry working conditions
Cold area upgrade kit for low-temperature operating environments

Summary

As a classic 7-ton small excavator in Komatsu's product line, the PC70-8 balances high working efficiency, low fuel consumption, outstanding reliability and easy operation, with a very high return on investment. It is one of the most popular compact excavator models in the global market, especially favored by individual contractors and small engineering teams.

Non flooded

No accident

Original product

Used Komatsu 70-8 Excavator

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