CHANGLIN WEA CO., LTD
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The ZG220 crawler excavator has a negative flow control hydraulic system, delivering strong power, high energy efficiency, exceptional reliability and durability.
To comply with the national three-stage emission standard, a fully electronically controlled engine is used to accommodate various working conditions. A newly developed control system optimizes the power matching between pump and engine, resulting in low fuel consumption and high work efficiency.
A new type of hydraulic system is used in the crawler excavator. The optimized internal valve core ensures increased flow rate, reduced pressure loss, reasonable flow distribution, better movement coordination and easy operation.
The control system is newly developed to assure the full functionality of the entire excavator. It can intelligently adjust the hydraulic absorption power to accommodate the working conditions, and enable an optimized system matching
The crawler excavator is equipped with a 5.7-inch glare-free color monitor featuring high-resolution and high-brightness, and an intelligent electronic monitoring system with functions of maintenance reminding, automatic fault diagnosis and alerting
The new safe and reliable cab is utilized in the crawler excavator, it features an injection-molded interior and an automatic air conditioner for operator's comfort
The reliability of the entire excavator has been verified for 5000 hours during the development stage. All key components including structural parts, hydraulic parts, slewing bearings and engine have been tested under extreme working conditions.
User evaluation: the fuel consumption is about 10% lower than that of the same tonnage brand in the industry, and the reliability is high.