Hyundai Construction Equipment Americas’ 9A series of Tier 4 final-compliant compact excavators are now available in the United States and Canada. These machines range from 1.7 to 8.2 metric tons, and include the mini R17Z-9A, R25Z-9A, R35Z-9A, R55-9A, and R60CR-9A models and the midi R80CR-9A model.
The Hyundai 9A series models R17Z-9A and R25Z-9A are powered by Kubota engines, and the R35Z-9A, R55-9A, R60CR-9A, and R80CR-9A are powered by Yanmar engines. Both the Kubota and Yanmar engines provide efficient fuel combustion and reduced noise.
To achieve optimum precision on the R55-9A, R60CR-9A and R80CR-9A models, Hyundai redesigned the hydraulic system to provide the operator with super-fine touch and improved controllability. An arm flow summation system provides energy savings, reduced cavitation and increased speed.
The boom swing function on the excavators is designed for efficient work in congested areas. The boom can be offset left or right. Zero-tail swing on the Hyundai R17Z-9A, R25Z-9A, and R35Z-9A allows operators to work near buildings, in single lanes on roadways, or in other confined settings. The variable undercarriage on the R17Z-9A — which can be adjusted to between 3 ft. 3 in. and 4 ft.3 in. wide — allows the most compact machine in the line to work in the tightest limited-space work environments.
Enhanced reliability features on the 9A series compact excavators include bushings designed for long-life lube intervals, wear-resistant and noise-reducing polymer shims, and integrated preheating systems that extend service intervals and reduce machine downtime. Serviceability enhancements include wide open engine hoods, centralized grease fittings, and easy-change plastic air cleaners. The R60CR-9A and R80CR-9A models feature a tilting cabin for convenient maintenance and service.