2022 Komatsu PC78 Used MINI Excavator

Here’s a detailed English description of the Komatsu PC78 Excavator, covering its overview, key features, technical highlights and operator benefits. (Note: specific specs may vary depending on version, region & age.)

Overview

The Komatsu PC78 is a compact/midi crawler excavator designed for job sites where a balance of power, maneuverability and efficiency is required. It’s especially suited for general construction, utilities, urban excavation, trench work and material handling in tighter spaces. It combines Komatsu’s proven hydraulic system, durable structure and operator‐friendly cabin design.

Key Specifications & Features

Engine / Emissions:

• For example, the PC78US-8 version is powered by a Komatsu SAA4D95LE-5 engine producing ~41 kW (≈55 hp) @ 1,950 rpm. komatsu.co.za+2cdn.machine.market+2

• It features a low‐emission design meeting interim Tier 4 / Stage 3A standards in some markets. locationguay.com+1

• Fuel tank and filters are designed with serviceability in mind. cdn.machine.market+1

Operating Weight / Size:

• Operating/working weight in the region of ~6,945 – 7,535 kg for the US‐8 version. komatsu.co.za+1

• The more recent PC78US-11 spec gives ~7,910 – 8,250 kg. komatsu.com+1

• Compact swing radius and tight tail‐swing design make it well suited to confined work sites. コマツ 企業サイト+1

Performance – Digging / Reach / Capacity:

• Bucket capacities in some versions are approximately 0.09-0.34 m³. komatsu.co.za+1

• Typical maximum digging depths in the ~4.1-4.7 m range. Chinax+1

• Horizontal digging reach often around ~6.3-7.0 m depending on specification. Chinax+1

• Bucket/arm forces (in used units) can be in the region of ~61.3 kN bucket force. Chinax

Hydraulics & Controls:

• Komatsu’s closed-centre load sensing (CLSS) hydraulic system is implemented in newer models (e.g., PC78US-11) for smooth multi-function work and better fuel efficiency. komatsu.com+1

• Multiple work modes (Power, Economy, Attachment, etc) allow the operator to tailor performance to task, enhancing productivity and reducing fuel consumption. komatsu.co.za+1

Operator Comfort & Safety:

• Spacious cab design in more recent versions with features like a large colour monitor, sliding door (for easier access), good visibility, adjustable suspension seat. locationguay.com+1

• Safety features such as ROPS/FOPS cabin architecture, rear-view monitor, tight tail swing to reduce risk in tight areas. komatsu.com

Serviceability & Durability:

• Ground-level access to key service points, easy-open engine hood/side covers, simplified maintenance procedures. cdn.machine.market+1

• High-strength undercarriage, cast-boom foot and tip, quality hydraulic components and rugged structure contribute to durability. komatsu.com+1

Typical Applications & Advantages

Because of its combination of mid-size performance and compact footprint, the PC78 is well suited for:

• Urban construction and utility work where job site space is limited.

• General earth-moving, trenching, site preparation and material loading.

• Projects where fuel economy, versatility and ease of transport matter.

• Rentals or contractors needing a reliable excavator that can access narrower spaces but still deliver strong digging performance.

Key advantages include: relatively low operating weight (making transport easier), tight swing design (for working near buildings or walls), efficient hydraulics for fast cycle times, and the strong brand reputation of Komatsu for parts availability and support.

Summary

In summary:
The Komatsu PC78 excavator offers a well-balanced package of compact size + strong digging reach + efficient hydraulics + operator comfort + serviceability. Whether you need a machine for general construction, site work, municipal projects or rental fleets, the PC78 gives a versatile solution in the ~7-8 ton class.