Hydraulic Excavators Set New Production Records at Lake Lindsay in Australia

When two hydraulic mining excavators were needed for the Lake Lindsay coal mine in Central Queensland, Australia, the mine owners researched a number of alternatives before purchasing Terex RH340 machines. Owned by Anglo Coal and operated by Capcoal, Lake Lindsay is the newest metallurgical coal project in the Bowen Basin.

Peak mining activities at Lake Lindsay mine should be reached this year, when the mine is expected to produce up to 6 million metric tons per year (mtpy) of medium- to high-volatile met coal. To efficiently move this coal into haul trucks and off the site, two RH340 hydraulic excavators were chosen for their ability to load a 240-ton truck in only four passes and for their high availability.

The first RH340 was put into production at the mine in February 2007 and the second in October the same year. Since then, one of the machines at Lake Lindsay set a production record of 59,420 bank cubic meters (bcm) in a 22-hour period, according to Terex Mining. The industry average for a 22-hour shift is 45,000 bcm, so the RH340 proved its productivity and profitability with extremely fast working cycles.

The two RH340 hydraulic mining excavators have averaged over 95% availability for 8,000 hours each, according to Terex Mining. The machine’s layout, which offers exceptional accessibility, helps keep effort for service and maintenance at a minimum. Its spacious and clearly arranged superstructure is built in a modular design for quick access to all service points and easy inspection of components.

The RH340’s standard bucket capacity is 44.5 yd³ (34.0 m³) for both front-shovel and backhoe configurations. The excavator is powered by a 2,520-hp (1,880-kW) diesel engine with an independent oil-cooling system.

The Lake Lindsay mine has an expected life of 30 years and Terex Mining believes the excavators will likely set more production records, further enhancing the owners’ return on their equipment investment.


Pillar Innovations Debuts the EMU at Bluefield Coal Show

Pillar Innovations unveiled its newest product, the EMU, which is an electric-powered utility vehicle, at the 2009 Bluefield Coal Show during September. Unlike other electric vehicles that have previously been used in mines, the EMU is not a remanufactured golf cart. It is a side-by-side, battery powered utility vehicle designed to stand up to the rigors of everyday mine duty. From spooling and retrieving mine cables, to moving material, to aiding in the transport of injured miners, the EMU is easily configured to handle a multitude of tasks.

One special feature of the EMU is its independent suspension that is designed to easily traverse rough mine terrain while providing a stable ride for heavy payloads. Rear suspension is self-leveling to eliminate rear end squat and maintain ground clearance even when heavily loaded.

The vehicle can be used simply for transport, or it can be configured with any of the following enhancements: cable spooler, rock dusting package, plow, trailer, forks, tool boxes, scoop, winches, EMT package, air compressors, fire fighting package or enclosed cab. Many of the configurations use the front-mounted hydraulic lift system that is capable of moving 500 lb loads.

“We listened to what miners needed in a side-by-side” said Adam Brenneman, director of sales and marketing, Pillar Innovations. “The biggest needs were independent suspension and a wide enough seat to sit two miners comfortably with all their gear. With the EMU we are able to deliver that plus a lot more with the addition of the hydraulic lift.”

Additional features include plenty of room to easily seat two miners with their gear; a 30-hp electric motor that has the power to go up to 13 mph; selectable low range and 4-wheel drive provide torque to tow loads of up to 2,000 lb; and an electronic power steering package that helps navigate through tight entries while armor protects the front end.


Hydraulic Filters and Strainers

Flow Ezy Filters tank-mounted strainers install through a side wall of a hydraulic oil reservoir. They are made to protect the pump and remove contamination that could damage the hydraulic system. Offered in 30, 60, 100, or 200 mesh, with or without a bypass. The bushings have an external male npt thread and an internal female npt thread, with selected models having SAE straight thread connections. The strainers are available in sizes up to 4-inch npt male threaded threaded connections.


Flex Hose Line

Imperial Systems, Inc. offers Polyurethane Reinforced Flex Hose with wire helix in light duty, medium duty and heavy duty. The hose is ideal for severe service applications, has excellent flexibility and superior chemical resistance. Designed for applications with wide temperature ranges. The PVC polyvinylchloride flex hose is an economical choice to the Polyurethane hose.


Hydraulic Gear and Bearing Puller

Posi Lock’s hydraulic line featuring the patented “Safety Cage design” has yet again expanded to include a 4-jaw, 200 ton puller. The exclusive PH-200T jaws have a reach of 50 inches (1,219 mm) and a spread range from 8 inches (203.2 mm) to 52.5 inches (1,333.5 mm). The hydraulic-powered dual mast lift cart will extend from ground to 5 ft (1,524 mm). The puller can be removed from the cart and can be used in either horizontal or vertical positions. The jaws are hydraulically guided by the safety cage and jaw tips can be manually adjusted for optimal contact with the pulling surface.