The Hitachi 120 (represented by the ZX120-6 model) has an operating
weight of around 11,800 kg. Its overall length is 8,150 mm, width
2,490 mm, and height 2,740 mm. The track gauge measures 2,000 mm,
with a track shoe width of 500 mm and a minimum ground clearance of
430 mm.
Powered by a 4-cylinder Isuzu engine, it delivers a rated power of
66 kW at 2,000 rpm. The maximum digging radius reaches 7,800 mm,
and the maximum digging depth is 5,000 mm. It features a bucket
digging force of 82 kN and a travel speed of 3.0/5.2 km/h, with a
climbing capacity of 70%.
The fuel tank capacity is 210 L, the hydraulic oil tank holds 90 L,
and the engine oil capacity is 16 L. The standard bucket capacity
ranges from 0.4 to 0.6 m³, ideal for small to medium excavation
tasks.
Engineering
The upper structure 采用 a reinforced box-type frame, enhancing
stability during heavy operations. The boom and arm are constructed
with high-strength steel, reducing weight while improving
load-bearing capacity. Critical joints are equipped with
wear-resistant bushings to minimize friction and extend service
life.
The hydraulic system incorporates a load-sensing mechanism, which
adjusts oil flow based on operational demands to reduce energy
waste. Dual variable displacement pumps enable smooth simultaneous
operations, such as boom lifting and bucket movement, without power
loss.
The engine is integrated with a common-rail fuel injection system
and a turbocharger, optimizing fuel combustion for improved
efficiency and lower emissions. It also features an automatic idle
function that reduces engine speed during inactivity, cutting down
on fuel consumption.
Design
The cab is designed for operator comfort, with a fully adjustable
suspension seat and intuitive control layout. A digital display
provides real-time data on fuel levels, engine temperature, and
maintenance alerts. The cab’s sound insulation minimizes noise,
creating a more pleasant working environment.
- Safety & Maintenance Design
The cab meets ROPS/FOPS safety standards, with reinforced glass and
a sturdy frame to protect operators. Maintenance points, including
filters and grease fittings, are easily accessible, simplifying
routine checks and repairs. A self-diagnostic system identifies
faults and displays error codes for quick troubleshooting.
It offers three working modes (Standard, Eco, and Heavy) to adapt
to different tasks, balancing power and fuel efficiency. The
compact design allows for easy maneuvering in tight spaces, making
it suitable for urban construction sites. The undercarriage is
designed to resist debris buildup, ensuring reliable performance in
muddy or dusty conditions.
Value Category | Items (Related to Used Hitachi 120 Excavator) |
Durability | - Sturdy build to withstand long-term use in construction sites-
Reinforced components for resistance against wear and tear- Proven
track record of enduring tough working conditions |
Fuel Efficiency | - Engine optimized for lower fuel consumption- Efficient power
distribution to reduce unnecessary fuel usage- Cost-saving
operation for extended work hours |
Reliability | - Trusted performance in various construction tasks- Consistent
functionality even as a pre-owned unit- Hitachi's reputation for
manufacturing reliable heavy machinery |
Practicality for Construction | - Suitable for small to medium-scale excavation projects-
Maneuverable design for work in confined spaces- Compatible with
standard attachments for versatile applications |
Cost-Effectiveness | - Affordable pre-owned option compared to new models- Lower initial
investment with maintained performance- Ideal for budget-conscious
contractors and businesses |
