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New toys for 2009

Graders and dozersKomatsu’s radically different new compact dozer range started to roll out in 2008. These machines have the cab forward, with the tapered bonnet giving the operator an excellent view of the blade, and the radiator is relocated to the rear.The dozers have hydrostatic drive, a power angle tilt blade, and are ready to take a Topcon laser or GPS machine control system. The most recently released model, the 12.7t, 97kW D51EX-22, has a 13.1t low ground pressure variant, the D51PX-22.Sino Heavy Equipment has represented HX dozers in Australia for some time. Updates for 2009 include an extreme conditions cooling package that combines a radiator capacity twice that of earlier dozers with a similar increase in oil cooling capacity. Other enhancements include a quieter cab and new electronic Cummins engines.SHE introduced Sany graders to Australia in 2008, with the first public showing being at the CivEnEx show in Sydney. The company says it has analysed feedback from users to make changes to the ripper, wheels and tyres, cooling system, operator controls and differential lock circuitry.SHE’s George Christianson says the Sany grader is a well-built machine with top components such as Cummins, Rexroth, Danfoss and Siemens. He says the modifications will make it an even better machine. He also hopes the many test drives undertaken by councils in 2008 will pay dividends in 2009, which will also see the introduction of a larger model PQ230.LoadersHitachi released its long-awaited ZW series wheel loaders last year after extended local testing. The new range has a torque control system designed to find the best balance between traction and speed, and uses efficient variable displacement hydraulic pumps and wet disc brakes. Improvements in the hydraulic system allow the loaders to optimise performance when operating multiple circuits simultaneously.The cab has a large glass area and bi-level airconditioning system. Ride control is optional.The load-sensing automatic transmission has a three-step clutch cut-off that allows better balancing with the brake when operating on ramps. The hydraulically driven fan is reversible for clearing the radiator and adjusts speed according to heat load for efficient operation. Komatsu’s PZ linkage range, which combines the breakout of a Z-bar loader with parallel lift capability, recently extended upwards to the WA320PZ-6 (125kW, 14.7t). Komatsu believes its PZ system is lighter than alternatives on the market and provides better visibility.Liebherr’s LR 614 Litronic crawler loader is now available in Australia. This has hydrostatic drive and is economical in the tradition of Liebherr hydrostatic drive machines. The LR 614 features a comprehensive hydrostatic Liebherr travel drive. Constant power is provided to both tracks, which are driven independently. The Litronic system allows optimal control of the travel speed and all steering movements. Any required turning radius can be achieved with a simple hand movement, including spot turns. The robust Z-bar linkage with cast cross-pipe handles high bucket breakout forces, and the low sill of the front windshield ensures a good view of the working attachment. This machine has an operating weight in the 10.7-12.3t range, a 72kW engine and a 1.25 cubic metre bucket.Sino Heavy Equipment will release a range of Sino-badged wheel loaders in 2009. These have been built to SHE specifications, including engine and transmission cooling requirements, and SHE undertakes its own quality control supervision throughout the assembly and shipping process.SHE’s George Christianson says he is impressed with the standard of finish of the machines, which feature Cummins engines, quick hitches, a spacious quiet cab, tubeless wheels and tyres, and pilot valve/joystick control.Volvo will release a new compact loader, the L50F (operating weight 9.4t) some time in 2009.

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