Product description:

The SH520-9 hydraulic excavator is designed to deliver higher efficiency, reduced energy consumption, and enhanced environmental performance. Its potential energy recovery system has been recognized as one of the “Top Ten National Energy-Saving Technologies and Practices” and has obtained 13 authorized patents. This innovation stands out as a leading energy-saving solution in the construction machinery sector, ushering in a new era of eco-friendly operation.

Energy-saving principle of the SH520-9:
During arm descent, hydraulic oil from the large chamber flows into an accumulator, where energy is captured and stored.
When the boom is raised, the stored oil is converted into high-pressure fluid and delivered to the cylinder, enabling efficient reuse of the recovered energy.
In this process, only one main hydraulic pump is required for lifting, with the remaining flow supplemented by the accumulator. In contrast, conventional systems rely on two pumps simultaneously supplying oil to the boom cylinder.

Energy-saving performance:
The SH520-9 achieves 15%–20% lower fuel consumption compared to other excavators in the same tonnage class, while improving overall operational efficiency by 20%–30%.

Product parameter:

Product diaplay:

Cummins engine, reliable, efficient, low fuel consumption：

1. adopts electronic control to electronically control the high pressure fuel injection in order to optimize fuel injection and reduce fuel consumption 

2. reduces fuel consumption and noise by synchronizing control to reduce excess engine rotation under light operation.

INLINE main pump features：

1.high efficiency

2. high response

3. large displacement 

4. abundant control methods 

5. high power output density 

6. high self-priming capability 

7. high reliability

Toshiba Main Valve Functional Features：

1.linear travel circuit 

2. boom priority, boom priority in compound action of boom and bucket 

3. slewing priority, slewing priority in compound action of bucket slewing 

4. bucket merge, standby merge circuit 

5. bucket regeneration 

6. boom regeneration 

7. bucket, boom load holding valve.

SH520-9 excavator reinforced work unit:

Reinforced movable arm, bucket bar：

1. High stress area → Use of high tensile strength steel plate

2. Shaft seat area: Use of forged parts

3. Middle section: Welding of large cross-section spacer plate

"Central load-bearing structure" on the shelf：

The "Central Load-bearing Structure" reduces stress by distributing the force directly to the chassis through the upper structure. Improves durability and extends machine life.

Reinforced "X" travel frame：

Reinforced design of the beam structure, where stress is concentrated, increases the strength of the cross-section by more than 35% compared to conventional models. It is more adaptable to severe working conditions and large loads.

Reinforced Bucket：

The wear-prone parts of the bucket (front, sides and bottom) are reinforced with super wear-resistant welded plates. The average service life of the bucket is more than 20% longer than that of the traditional model.

Product details:

Company Strength:

Shandong Shitian Heavy Industry Co., Ltd (Jining Shan re-energy) is located in Jining City, Shandong Province, high-tech zone technology industrial development zone. It is a high-tech enterprise specializing in the research, development and production of large excavators. For the large energy-saving excavator design, research and development and production of the leader, the development of hybrid large excavator SH520-9 energy-saving effect reached more than 30%.

In 2020, Jining Shan re-energy hybrid excavator production base project into the key support projects in Shandong Province, its conventional products SH380-9 using a full set of German Linde hydraulic system, strong digging performance, upholding the German industrial products, reliable and efficient design and manufacturing concepts; SH470-9, SH500-9, SH600 in the mines, highways, quarry conditions after decades of verification, known for high efficiency, energy saving The SH470-9, SH500-9, SH600 have been proven in mining, highway and quarry conditions for decades and are famous for high efficiency and energy saving.

Why Choose Us:

1. We have an independent R&D team and cooperate with 3 large collaborative teams to develop and upgrade products. There are 8 core R&D members and 28 R&D and trial production staff.

2. Utilizing the international advanced TQc total quality management system to implement quality control management.

3. 21 senior technical service personnel to provide a full range of after-sales service.

4. Advanced production management team, industry management experience of more than 15 years, to ensure the assembly quality.