Caterpillar Offers New Size Class 993K Wheel Loader Designed For Tough Digging and Fast Loading

The Cat® 993K Wheel Loader offers a new size class in the Caterpillar® line. The 993K loader capacity matches perfectly with the Cat 777 (four pass) and 785 (six pass) off-highway trucks. Built on an all-new platform, the new loader features Z-bar linkage, hydraulics and power train that deliver superior penetration into the pile and high breakout forces-20 percent more than the 992G. The increased performance and capacity result in a 15 to 20 percent improvement in productivity compared to the 992G.

The new loader also features the Cat C32 ACERTTM 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.

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.

Productive power train and hydraulics

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 percent more power and a 5 percent 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 993K axles share component commonality with the Cat 777 off-highway truck, and the final drives are built off the Cat D11 platform and are tailored for wheel loaders. The drive system delivers 27 percent more rimpull compared to the 992G. The axle service brakes share component commonality with the Cat D9R and provide superior retarding and braking capabilities. The braking system cuts stopping distance by 30 percent in third gear runout tests, when compared to the 992G.

Design for safe operation and maintenance

The 993K incorporates a number of new designs to enhance operator comfort, safe operation and easier access for service. For example, the new, larger cab-with a 2-foot (0.6-meter) increase in cab height-provides a greater viewing area to the work area and truck body.  Right and left access stairs, which are wide enough to clear emergency litters, stairway lights, toe kicks on the upper platform and a window-washing platform enhance movement around the outside of the cab. The optional, powered Rear Access Egress System (RAES) raises personnel from the ground to the stairway.

The 993K has five service centers that group service points for fast and efficient maintenance. The bumper service center promotes safe maintenance practices by locating the starter and transmission lockout at ground level. The standard ground level service center features manual grease points, a laptop computer tray, flood light for night service, and VIMS and Electronic Technician ports. The optional deluxe version of this service center provides quick-fill ports and a VIMS Messenger display for easy viewing by the technician. Ground level service access enhances safety and speeds maintenance work.

The VIMS machine health-monitoring system, equipped with Advisor enhanced display, records data for diagnostics and prognostics. Larger screen size allows more information to be displayed and makes the system easier to use. New features of the 993K VIMS include an enhanced operator profile system and additional service capabilities.

For additional information about the 993K wheel loader, customers should contact their local Caterpillar dealer or visit the Cat web site at

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