Hitachi presents the ZX870LCR-5 excavator

The Hitachi ZX870LCR-5 has been built to operate on the most demanding job sites, such as busy quarries. It belongs to the R-series of large Zaxis-5 excavators, developed by Hitachi engineers to offer enhanced durability. Following feedback from owners and operators all over Europe, it has also been designed to deliver high productivity, balanced with sustainability, as well as durability, comfort and safety, and easy maintenance.

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According to customers, one of the most important considerations for investing in a large excavator was productivity. The ZX870LCR-5 incorporates the HIOS IIIB hydraulic system, which allows for faster operation with lower fuel consumption, and increased front speed. It has increased productivity by 6% in H/P mode (compared to the previous Zaxis model). Swing torque has also increased by 9% and the speed of light-load operations such as grading has also improved, thanks to a larger volume of hydraulic flow.

Due to the latest EU regulations on emissions standards, sustainability is another key concern for owners. The ZX870LCR-5 has a powerful Stage IIIB-compliant engine that delivers higher productivity with greater fuel efficiency. It also incorporates a muffler filter, which helps to reduce emissions by capturing air pollutants. The auto shutdown and auto idler features enhance fuel consumption and reduce noise, exhaust emissions and CO₂.

Tough working conditions require a high level of durability, which is why the ZX870LCR-5 has been designed with reinforced components and added protection to further strengthen the undercarriage and front attachment. Wear-resistant steel buckets have been designed specifically for handling hard and abrasive materials. Dual fuel main filters and pre-filters are provided as standard to reduce system failures. The fuel injector is protected by diamond-like carbon (DLC) coating, which enhances its durability, and the engine has a twin-layer main fuel filter that doubles filtration performance.

The OPG (level II)-compliant cab of the ZX870LCR-5 meets industry standards for safety and has been designed to protect the operator from falling objects on the job site. The front window, made of laminated glass, is fixed to shut out dirt and debris.

In terms of comfort, the ergonomically designed cab of the ZX870LCR-5 is ideal for operators working long hours in a quarry. The fully adjustable air suspension seat absorbs vibrations and helps to minimise fatigue. A sliding mechanism allows it to slide back further than before, and more space below the multi-function LCD monitor creates even more leg room. Visibility and access have also been enhanced by the repositioning of the door and monitor.

To ensure an optimum performance and maximum availability, the ZX870LCR-5 has been designed with several easy maintenance solutions. The multi-function LCD monitor displays maintenance information at a glance, and it is possible to set the routine service schedule every time the ignition switch is turned on. The fuel filters and engine oil filter can be replaced easily from the excavator’s walkway. The excavator is also equipped with a solenoid fuel pump, which means there is no need to pump manually if the engine stops due to lack of fuel or while the main fuel filter is being changed.

The Zaxis-5 range was created at the Design Centre at Hitachi Construction Machinery Co., Ltd. (HCM) in Japan. Yusuke Kajita, General Manager of HCM's Construction Equipment Development Centre, says: “The most important consideration in the design of the Zaxis-5 models was reliability. Our customers need good machines and want to make more profit as a result of their investments.”

Specifications

ZX870LCR-5

Engine rated power 397kW

Operating weight 83,800 – 86,200kg

Maximum digging reach 14,100mm (with 8.4m H-boom at 3.7m arm length)

Maximum digging depth 8,870mm (with 8.4m H-boom at 3.7m arm length)

Bucket digging force 402kN (with 8.4m H-boom at 3.7m arm length)