The Cat 993K Wheel Loader is a totally new model and offers a new size class in the Caterpillar line. It is designed for tough digging and fast loading in mining operations.

The 23-metric-tonne loader capacity matches perfectly with the Cat 777 and 785 off-highway trucks. Built on an all-new platform, the 993K features Z-bar linkage, hydraulics and power train that deliver superior penetration into the pile and high breakout forces. The increased performance and capacity result in a 15 to 20% improvement in productivity compared to the 992G.

The new loader also features the Cat C32 ACERT engine for increased performance and US EPA Tier 2/EU Stage IIa emissions compliance. It produces net power of 950 horsepower (708 kW).

The 993K also offers innovative solutions to ease maintenance and boost reliability. For example, the Cat exclusive sleeve bearing pins eliminate the need for daily greasing of the front linkage. To lower life cycle costs, the 993K is designed to meet mining customer rebuild requirements and have an estimated 45,000-hour structure life.

The loader design also emphasizes operator safety and comfort. The wider platform allows a spacious cab and a trainer seat is standard equipment. Seat-mounted controls allow precise operation even on rough ground, and electronically controlled lift and bucket tilt detents can be set from the operator seat. The optional rearview camera increases the view behind the machine. An optional rear access system replaces the left hand ladder and lifts the operator to and from the cab.

The power train and hydraulics are designed to deliver high productivity and low cost per ton. As compared to the 3508B engine used in previous mining loaders, the C32 engine delivers 19% more power and a 5% increase in fuel efficiency. The proven C32 also powers several other Caterpillar mining machines, which simplifies parts inventory management.

The 993K features the next generation modular radiator (NGMR), which has copper fins for superior heat exchange capabilities. The design and construction minimizes space required for the cooling package and allows enhanced sight lines to the rear.

Positive flow control (PFC) hydraulics is the next generation of load-sensing hydraulics. Additional sensors at the pumps provide enhanced responsiveness that the operator can feel and use. The full return flow filtration system filters 100 percent of the implement oil return flow to 6 microns for extended component life and increased uptime. The optional deluxe filtration system prevents downstream contamination in case of a failure.

The Cat planetary power shift transmission is electronically controlled and features three forward and three reverse speeds. The impeller clutch torque converter allows the operator to match rimpull to the application and underfoot conditions through the use of a foot pedal and adjustments made through the rimpull control system.

The all-wheel drive design features four planet carrier gears with planetary double reduction in each wheel. Double reduction final drives significantly reduce power train stresses and effectively extend power train life and durability.

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