Caterpillar launch new 834K wheel dozer
Latest machine features a new cab, refined transmission, advanced monitoring system and safety enhancements
CATERPILLAR have introduced the new 834K wheel dozer – the company’s newest version of its highly mobile dozer proven in mining, bulk materials handling and heavy construction operations around the world.
The 834K dozer builds on the strengths of its predecessors with a completely new cab, drive train refinement, new monitoring and diagnostic features, new safety features and structural enhancements. Available blade types include: straight; universal; semi-universal; and coal, ranging in capacity from 10.3 to 29.0 cubic yards (7.9 to 22.2 cubic meters).
Rated at 496hp (370kW), the Cat C18 engine used in the 834K is available in three configurations to tailor the machine for any region of the world: Tier 4 Final (Stage IV) using a diesel particulate filter and a selective catalytic reduction system to control emissions; Tier 3 equivalent without after-treatment; and Tier 2 equivalent without after-treatment.
The C18 engine uses a field-proven Cat mechanically actuated, electronic unit-injection system for precise control of fuel delivery, yielding optimum performance and economy in all operating situations.
The Cat 834K machine has a number of fuel-saving enhancements, including engine-idle-shutdown and engine-idle kick-down systems, and a delayed-engine-shutdown system that protects the engine from hot shutdowns. An on-demand, hydraulically driven cooling fan reduces horsepower draw for increased efficiency.
The Cat 4F/3R planetary power-shift transmission used in the 834K features a new advanced productivity electronic control shifting system, which is designed to provide greater machine momentum through shift points, enhancing performance and saving fuel. Forced-flow oil lubricates and cools the transmission high-torque clutches to ensure long component life.
For increased productivity and precise control, the impeller clutch torque converter (ICTC) allows the operator to adjust rimpull from 100% to 25%t in order to match hydraulic effort and rimpull to the operating situation. The ICTC system reduces tire wear and permits full-throttle shifts for greater productivity.
The 834K axles feature shaft-mounted, oil-cooled, multiple-disc brakes. This braking system can be equipped with auxiliary oil coolers for added protection. To reduce brake loads, an optional automatic retarding system maintains a set downhill speed, reducing brake use.
The 834K dozer features a completely redesigned operator station with automatic temperature control, a new touch-screen display with soft keypad, a electro/hydraulic parking brake, and a Cat Comfort III seat with air-ride suspension and integral controls, including steering transmission integrated control that allows convenient joystick steering. Interior sound levels are significantly reduced to a quiet 71dB.
The machine is also equipped with Caterpillar’s next-generation Vital Information Management System (VIMS 3G), which features a large touch-screen interface and easy-to-use navigation to keep operators informed of machine operating parameters.
Reflecting the solid design of its predecessors, the new 834K retains its massive full-box-section rear frame that resists torsional shock and twisting forces. New for the Cat dozer is a redesigned rear-axle trunnion, which is now wider and bolted directly to the frame rails, eliminating the previously used intermediate casting and allowing loads to be more effectively dispersed.
In addition, the machine’s lower articulation point (lower hitch) has been strengthened with an increase in front frame plate thickness and a significant increase in pin diameter in conjunction with a larger bearing.
