Coal Age Magazine - For nearly 100 years, Coal Age has been the magazine that readers can trust for guidance and insight on this important industry.
Issue link: https://coal.epubxp.com/i/131326
hydraulic excavators continued we have sold seven units," Lukowski said. "With a total of approximately 50,000 accumulated operating hours...the R 9800 delivers superior production with instantaneous digging rates around 8,000 mt per hour at a similar or even lower fuel consumption than we see from other machines. We have seen confirmed data from mine sites that indicate a 15% fuel saving per ton." In regard to the development of new machines, Lukowski believes that an additional product in the 200-mt class will pave the way for Liebherr Mining to offer the most complete product range. "We are currently closely looking at this size class, and you should be expecting news from us in this regard in the near future," Lukowski said. tions. Improved hydraulics apply strong bucket forces through a wide range of heights. The Tri Power linkage technology enhances digging capabilities of the 6120B. Similarly, the new shovel makes best use of proven Cat shovel features, such as the ergonomically designed, state-of-the-art operator's cabin. The 6030B FS hydraulic excavator on display at MINExpo 2012 is the first of the B Series machines. The 6030B FS fea- tures a new cab with advanced ergonomic design and superior visibility to the work area and clear lines of sight to the stick and boom for enhanced operator comfort and efficiency. Access walkways and hand rails too, have been redesigned to enhance the safety of operators and technicians. The 6030B, available in backhoe configuration as well as front shovel, incorporates a number of components that Cat Deploys Largest Hydraulic Shovel After acquiring the Bucyrus line of mining-class excavators, Cat began to pursue the larger haul trucks. At MINExpo 2012, Caterpillar displayed the Cat 6030B FS hydraulic excavator and announced the 6120B H FS, which will be the largest hydraulic mining shovel ever built, according to Cat. The 6120B H FS significantly exceeds the size of the 6090 FS to deliver highly productive 3- or 4-pass loading of ultra-class mining trucks. Hybrid technologies reduce fuel use per ton by an estimated 25%—through the use of hydra-electric regenerative technologies and an energy storage system. The 6120B was designed to be the most productive and efficient ultra-class hydraulic shovel. An operating weight of approximately 2.8 million lb and engine output of about 4,500 hp enable the shovel to efficiently handle dipper sizes of 60 to 85 yd3, depending on material density. The energy management system uses large capacitors to store energy created by the shovel during swing deceleration and boom-down movements. That stored energy then helps power the hydraulic system when the machine requires peak power, such as during the digging portion of the cycle. The hybrid technology features long-life components and design for ease of service, as do other systems within the shovel. Isolated, modular systems within the 6120B offer easy access and enhanced serviceability. The new hydraulic shovel will fill the need for a safe, cost-efficient and highly mobile ultra-class shovel for short-term mining operations and sites with no electrical power or electrical power limitaMarch 2013 www.coalage.com 31