Rock Products

NOV 2014

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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LOADING & HAULING EQUIPMENT & TECHNOLOGY The new Cat 950M and 962M wheel load‐ ers – powered by a Cat C7.1 ACERT en‐ gine meeting Tier 4 Final emissions standards – significantly more powerful than their K‐Series predecessors and de‐ liver 10 percent better fuel efficiency, ac‐ cording to the company. The new models feature major drive‐ train refinement, extensively redesigned hydraulic systems, new cab amenities, electronic payload measurement, Opti‐ mized Z‐Bar linkage that combines opti‐ mized bucket performance with parallel lift, and a range of Cat Performance Series buckets and work tools. These innovative systems intelligently lower the average working engine speeds and reduce the overall system heat loads which result in significantly improved performance and fuel efficiency. A system of Caterpillar‐developed elec‐ tronic, fuel, air and after‐treatment tech‐ nologies ensure that emissions control is transparent to the operator, does not in‐ terrupt machine operation, and promotes reliability, high productivity and low op‐ erating costs. More Power With a net rating of 230 hp (171 kW), the new 950M produces 9 percent more power than its K‐Series counterpart, and the 962M, rated at 250 hp (186 kW), has 13 percent more power. Peak torque is up an average 18 percent for the new mod‐ els, which means more useable power at the wheels. In addition, the new, produc‐ tive Economy Mode automatically senses power‐train load and adjusts engine speed and torque for optimum perform‐ ance and fuel efficiency. The 950M and 962M use a new five‐ speed Cat power‐shift transmission fea‐ turing a lock‐up clutch torque converter with lock‐to‐lock shifting (transmission gear remains locked during gear shifts), as well as the Cat single clutch speed shift system (which keeps the forward/re‐ verse clutch engaged during gear shifts). Auto‐shift features control the automatic shifting of the transmission and engage‐ ment of the lock up clutch. These two fea‐ tures working together maintain more effective and efficient torque flow through the transmission during gear changes which is, especially valuable when accel‐ erating up ramps. The redesigned axles feature on‐the‐go disc‐type differential locks to improve tractive ability in these applications thereby increasing productivity. These models come standard with front axle dif‐ ferential locks which are manually acti‐ vated by a switch on the floor. Optional fully automatic front and rear axle differ‐ ential locks operate by measuring differ‐ ences in axle speeds and require no operator intervention to activate. The disc‐type differential locks will reduce tire scuffing compared to other traction aids further reducing operating costs for customers. The machines have a new external caliper disc parking brake mounted to the input shaft of the front axle. Since they are ex‐ ternal, they do not have the inefficiencies of enclosed, wet parking brakes due to brake discs running in oil nor is there any oil to change reducing fuel and mainte‐ nance costs. External caliper parking brakes are easily accessible for inspection and service. Hydraulic Refinement The 950M and 962M hydraulic systems have significant design changes and cus‐ tomer value improvements. The main hy‐ draulic valve is now a mono‐block with an integrated ride control section. The mono‐block design reduces weight, has forty percent fewer leak points and is common across all M Series models. Auxiliary third and fourth hydraulic func‐ tions can be easily added at the factory or in the field with the addition of a second remote valve. The new ride control sys‐ tem now has two accumulators enabling it to be more effective over a greater pay‐ load range, increasing productivity and operator efficiency due to a better ride. Hydraulic system components on the 950M and 962M are protected by full flow and kidney‐loop filtration. A filter in New Cat Wheel Loaders Boost Performance, Fuel Efficiency www.rockproducts.com ROCK products • NOVEMBER 2014 27

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