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| 992K High-Lift offers greater truck-loading flexibility  The new Cat 992K High-Lift provides an added choice for quarries, mines and high-volume earthmoving contractors using large wheel loaders to load haul trucks. Having a full 610 mm more dump clearance than its standard-lift counterpart, the 992K High-Lift efficiently and productively loads 91- and 136-t capacity trucks such as the Cat 777F and 785C, including 91-t units with sideboards and fleets running mixed sizes of trucks. In some applications, this added lift height allows using the 992K rather than a larger loader. The 992K High-Lift has a rated payload capacity of 19.1 t. Assuming 100 percent bucket-fill factors, maximum material densities for available buckets, smallest to largest, are 1,780, 1,660 and 1,560 kg/m3. Hinge-pin height at full lift is 7,545 mm. Equipped with a 10.7 m3 bucket, dump clearance under the teeth (at full height and 45-degree discharge angle) is 5,232 mm; equipped with 11.5- and 12.2-m3 buckets, dump clearances are 5,156 mm and 5,105 mm, respectively. At 19.1 t, the 992K High-Lift is swinging less weight than its predecessor, the 992G High Lift. Front linkage design changes have reduced rated payload slightly but have improved pin casting and linkage durability significantly. For applications requiring greater payload capacity, the standard linkage 992K has a rating of 21.7 t, and for applications requiring greater production, Caterpillar offers the larger 993K with a payload rating of 24.9 t for the High Lift and 27.2 t for the Standard Lift. The design of the 992K High-Lift fabricated single boom incorporates castings in high-stress areas for long-life durability. For easier maintenance management, the high-lift system shares a significant number of parts with the standard-lift 992K, including lift and tilt cylinders, position sensor and harness, hydraulic lines and buckets. K Series features aid productivity, maintenance, safety Additionally, the 992K High-Lift features many improvements introduced with the standard lift model. Boosting productivity is Positive Flow Control (PFC) hydraulics—the next generation of load-sensing hydraulics. Additional sensors at the pumps provide enhanced responsiveness that the operator can feel and use. The 992K also offers innovative solutions to ease maintenance and boost reliability. The Cat exclusive sleeve bearing pins eliminate the need for daily greasing of the front linkage, and the next generation modular radiator (NGMR) has copper fins for superior heat exchange capabilities. The design minimizes space required and allows enhanced sight lines to the rear. Centralized service centers and ground level access points including the bumper service center and optional fluid service center also ease maintenance and reduce exposure to falls. The loader design also emphasizes operator safety and comfort. A trainer seat is standard equipment. The optional rearview camera increases the view behind the machine as do optional, heated rearview mirrors. write your comments about the article :: © 2010 Construction News :: home page |