993K Wheel Loader



Technical Specifications
Benefits and Features
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Cat Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. Introduced in 2008 the success of the 993K is a testament to its heritage. Created from Cat Large Wheel Loader DNA, the roots of performance, durability, comfort and efficiency runs deep. Move more make more with the 993K.

Net Power 973 HP
Operating Specifications
Operating Weight 294687 lb
Note * High lift, 60/65-51 BFOR (311-1938), standard cooling, 13.8 m3 (18.0 yd3) bucket (496-9912).
Operating Weight - Tier 2 Equivalent* 294687 lb
Rated Payload - High Lift 27.5 t
Operating Weight* 294687 lb
Cat Truck Match - Standard Lift 777
Operating Weight - Tier 4 Final* 294687 lb
Rated Payload - Standard Lift 30 t
Cat Truck Match - High Lift 777, 785
Bucket Range 12.2-23.7 m3 (16.0-31.0 yd3)
Articulation Angle 43 °
Bucket Capacities 12.2-23.7 m3 (16.0-31.0 yd3)
Transmission Type Cat Planetary Power Shift
Forward - 1 4.2 mile/h
Forward - 2 7.4 mile/h
Forward - 3 12.7 mile/h
Reverse - 1 4.7 mile/h
Reverse - 2 8.1 mile/h
Reverse - 3 13.9 mile/h
Note 50/65-51 BFOR (311-1938), calculated speeds.
Direct Drive - Reverse 3 15.6 mile/h
Direct Drive - Reverse 1 4.9 mile/h
Direct Drive - Reverse 2 8.8 mile/h
Direct Drive - Forward 3 14.1 mile/h
Direct Drive - Forward 2 8 mile/h
Direct Drive - Forward 1 Lock-up disabled
Front Fixed
Rear Trunnion
Oscillation Angle 10 degrees
Service Refill Capacities
Fuel Tank 573.3 gal (US)
Cooling System 80.2 gal (US)
Crankcase 31.7 gal (US)
Transmission 52 gal (US)
Hydraulic System - Tank Only 146 gal (US)
Note High Lift configuration.
Differential - Final Drives - Front 127.3 gal (US)
Differential - Final Drives - Rear 127.3 gal (US)
Hydraulic System Factory Fill 230 gal (US)
Hydraulic System - Lift/Tilt
Note High Lift configuration.
Lift/Tilt System - Pump Variable Piston
Cylinders - Lift/Tilt Double-acting
Relief Valve Setting - Lift/Tilt 4200 psi
Maximum Flow at 1,650 rpm 311 gal/min
Tilt Cylinder - Bore 9.3 in
Lift Cylinder - Bore 10.5 in
Lift/Tilt System - Circuit Positive Flow Control
Lift Cylinder - Stroke 66.2 in
Tilt Cylinder - Stroke 40.9 in
Note (3) The machine sound power level is 113 dB(A), measured according to the test procedures and conditions specified in ISO 6395:2008 for the sound suppressed machine configuration. The measurement was conducted at 70 percent of the maximum engine cooling fan s
Note (2) The machine sound power level is 116 dB(A), measured according to the test procedures and conditions specified in ISO 6395:2008 for the standard machine configuration. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Operator Sound Pressure - ANSI/SAE J1166 FEB08 72 dB(A)
Dynamic Operator Sound Pressure Level (ISO 6396:2008) 70 dB(A)
Note (1) Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment. Hearing protection may be needed when the machine is operated wi
Hydraulic Cycle Times
Note High Lift configuration, calculated speeds.
Lower 3.8 s
Rack Back 2.4 s
Lower Float Down 3.1 s
Total Hydraulic Cycle Time 17.2 s
Dump 1.8 s
Raise 9.2 s
Engine - Tier 4 Final
Note Standard ambient cooling.
Stroke 6.4 in
Displacement 1959 in³
Peak Torque - 1,250 rpm 4034 lb/ft
Net Power - EEC 80/1269 973 HP
Net Power - SAE J1349 964 HP
Gross Power - SAE J1995 1039 HP
Bore 5.7 in
Rated Speed 1800 r/min
Net Power - ISO 9249 973 HP
Torque Rise 33%
Net Power - ISO 14396 1024 HP
Emissions U.S. EPA Tier 4 Final
Engine Model Cat® C32 with ACERT™ Technology
Hydraulic System - Steering
Total Steering Angle 86 °
Maximum Flow at 1,985 rpm (6900 kPa/1,000 psi) 133 gal/min
Relief Valve Setting - Steering 5000 psi
Steering System - Circuit Closed
Steering System - Pump Piston, variable displacement
Engine - Tier 2 Equivalent
Stroke 6.4 in
Gross Power - SAE J1995 1041 HP
Peak Torque - 1,250 rpm 4034 ft-lb
Net Power - EEC 80/1269 973 HP
Bore 5.7 in
Net Power - ISO 14396 1024 HP
Rated Speed 1800 r/min
Net Power - ISO 9249 973 HP
Displacement 1959 in³
Net Power - SAE J1349 964 HP
Emissions U.S. EPA Tier 2 Equivalent
Torque Rise 33%
Engine Model Cat C32 with ACERT Technology
Note Standard ambient cooling.


Robust Structures

Your bottom line is improved by highly durable structures that achieve multiple life cycles and withstand the toughest loading conditions.

  • Full box-section rear frame and four-plate loader tower resists shock and torsional loading to maintain hitch and loader linkage pin alignment.
  • Robotically welded structures provide deep weld penetration for maximum durability and fatigue strength.
  • Castings increase strength by spreading loads and reducing the number of parts.
Lift Arms

Your key to maximum uptime and productivity is our field-proven lift arms.

  • Excellent visibility to the bucket edges and work area through a Z-bar design.
  • High load stresses are absorbed by the solid steel lift arms.
  • Enhance strength in key pin areas through the use of one piece castings.
  • Stress relieved lift arms increase durability and lengthen time to repair.
Front Linkage

To ensure continued uptime, the 993K uses Cat Sleeve Bearing linkage pins which eliminate the need for daily greasing and routine maintenance.

Power Train

Steering and Transmission Integrated Control System (STIC™)

Experience maximum responsiveness and control with STIC that combines directional selection, gear selection and steering into a single lever.

  • Simple side-to-side motion turns machine right or left, minimizing operator movements.
  • Easy to operate finger controlled gear selection.
  • Smoother, faster cycles and less operator fatigue through the use of low effort integrated controls.
Cat Planetary Powershift Transmission

Building your success begins with a best-in-class transmission designed specifically for mining applications.

  • Consistent, smooth shifting and efficiency through integrated electronic controls.
  • Long life and reliability through heat treat gear and metallurgy.
  • Three forward and three reverse speeds to match your application.

The 993K utilizes a Cat C32 ACERT to provide the performance and efficiency customers demand.

  • On-demand performance through the use of turbochargers and aftercoolers.
  • High Torque Rise – 33% torque rise ensures high lugging forces during digging and acceleration in high rimpull conditions.
  • Extended engine life and improved efficiency through reduced operating speed.
  • Quick engine response through the use of electronic engine controls.
Impeller Clutch Torque Converter (ICTC) and Rimpull Control System (RCS)

Lower your cost per ton utilizing advanced ICTC and RCS for modulated rimpull.

  • Reduce tire slippage and wear by modulating rimpull from 100 to 25 percent while depressing left pedal. After 25 percent rimpull is achieved the left pedal applies the brake.
  • Reduce the potential for wheel slippage without reducing hydraulic efficiency with RCS.
  • Improve fuel efficiency in certain applications with our lock-up clutch torque converter providing direct drive.


Electro Hydraulic Controls

Operators increase productivity with our responsive implements feature.

  • Operate comfortably through electronically controlled hydraulic cylinder stops.
  • Handle easy-to-use soft detent controls.
  • Conveniently set automatic implement kickouts from inside the cab.
Steering System

Confident loader operation starts with precise machine control enabled by the 993K's load sensing hydraulic steering system.

  • Increase efficiency with our variable displacement piston pump.
  • Achieve precise positioning for easy loading in tight areas with 43 degrees of steering articulation.
  • Enhance operator comfort with integrated steering and transmission control functions.
Filtration System

Benefit from extended performance and reliability of your hydraulic system with our advanced filtration system.

  • Implement/fan case drain filters.
  • Steering case drain filters.
  • Implement, steering, brake and fan high pressure screens.
  • Full flow implement return screens.
  • Full flow fan/steering return filter.
  • Pilot filtration.
  • Extended life transmission filter.
  • Front and rear axle oil filters.
Positive Flow Control Hydraulics

Increase efficiency through our Positive Flow Control (PFC) Hydraulic System. PFC has concurrent pump and valve control. By optimizing pump control, hydraulic oil flow is proportionate to implement lever movement.

  • Fast, productive cycles enabled by three electronically controlled, fully variable piston pumps.
  • Increase bucket feel and control through increased hydraulic response.
  • Consistent performance and efficiency with lower system heat.

Operator Station

Your operators can work more efficiently and stay comfortable with our customer-inspired cab features.

Entry and Exit

Enter and exit the cab easily and safely with these newly designed, ergonomic features.

  • 45 degree access stairway.
  • Fold up STIC steer/arm rest.
Cat Optimized Seat System

Enhance comfort and reduce operator fatigue with the Cat Optimized Seat System.

  • High back design and extra thick, contoured cushions.
  • Air suspension system.
  • Easy-to-reach seat levers and controls for six way adjustments.
  • Seat-mounted implement pod and STIC steer that moves with the seat.
  • 76 mm (3 in) wide retractable seat belt.
Trainer Seat

Safely train other operators in comfort with our standard training seat.

  • 76 mm (3 in) wide, retractable seat belt.
  • Fold-down design with molded drink tray and storage.

Your operator's productivity is enhanced with our clean, comfortable cab environment.

  • Experience reduced vibrations from viscous cab mounts and seat air suspension.
  • Maintain desired cab temperature with automatic temperature controls.
  • Pressurized cab with filtered air.
  • Sound level reduced to a quiet 70 dB(A).

Technology Solutions

The 993K electronic systems have been completely integrated to function as one machine. This integration creates a smart machine and more informed operator, maximizing the productivity of both.


We have worked hard to help our customers and operators perform at their best through our Vital Information Management System (VIMS 3G).

  • Easy-to-view Advisor Display features a large screen.
  • Intuitive operation and easy navigation with our enhanced user interface.
  • Decrease service time by keeping operators informed about machine system malfunction or operation.
Operator Profile

Operator comfort begins with personalized machine feature settings. Through our Advisor Display, an operator can instantly recall personalized profiles.

  • Store up to 10 separate operator profiles through Advisor.
  • Decrease setup time between operators by recalling personalized screen layouts.
Payload Control System

Increase your efficiency with our Payload Control System 3.0.

  • Quick payload weighs with on-the-go weighing.
  • Comprehensive record accuracy of machine performance with up to 1,000 truck records with 25 different materials.
Cycle Timer

Impact your bottom line through improved machine performance with Cycle Timer. Each loading segment time can be analyzed to help you achieve more efficient operation.

  • Production Summary
  • Machine Utilization
  • Productive Cycle Time
  • Loader Payload Summary
  • Fuel Usage Summary

Cat MineStar System

Cat MineStar System is the industry's broadest suite of integrated mine operations and mobile equipment management technologies, configurable to suit your operation's needs. Its capability sets - Fleet, Terrain, Detect, Health and Command - contain a range of technologies that let you manage everything from fleet assignment and condition monitoring to remote and autonomous control. The 993K can take advantage of many of these advanced technologies, some of which are standard out of the factory.


Fleet provides comprehensive, real-time machine tracking, assignment and productivity management, giving you a comprehensive overview of all operations from anywhere in the world.

Terrain for Loading

Terrain with your 993K enables high-precision management of loading operations through the use of guidance technology. It increases 993K's productivity and provides you real-time feedback for improved efficiency.


Detect helps increase operator awareness, enhancing safety at your operation. It includes a range of capabilities designed to assist the operator with areas of limited visibility around fixed and mobile equipment.


Health delivers critical event-based machine condition and operating data for your entire fleet. It includes comprehensive equipment health and asset monitoring capabilities, with a wide range of diagnostic, analytic and reporting tools.


We are constantly improving our products in an effort to provide a safe work environment for the operator and those who work on your job site.

Machine Access
  • 45 degree stairs increase safety for operators getting on and off the 993K.
  • Walkways with non-skid surfaces and integrated lock out/tag out points are designed into the service areas.
  • Windshield cleaning platforms provide safe and convenient access for the operator.
  • Maintain three points of contact at all times through ground level or platform accessible service areas.
  • Emergency egress access.
  • Optional pull down window shade and heated mirrors ensure extended visibility for safe operation.
  • Cat Detect with Object Detection System (rearview camera and radar) or Vision (rearview camera) option increases operator awareness around the machine.
  • Lighting packages provide excellent workspace visibility.
  • Cab mounted LED warning beacons.
Operator Environment
  • Low vibrations to the operator with viscous cab mounts and seat air suspension.
  • Low interior sound levels.
  • Operator training seat facilitates safe new operator training.
  • Standard 76 mm (3 in) seat belts on the operator seat and operator training seat.
Powered Access System

The Cat powered access system allows easier access to the primary stairs by improving ingress and egress to and from the rear platform.

  • Safe, ergonomic access system.
  • All operators have adequate space when using the wide stairway.
  • Operators maintain three-point contact when using full handrails on each side.
  • Raise and lower platform from cab level or ground.
  • Occupants can quickly exit with a conveniently located emergency release valve if the loader becomes inoperable.


We can help you succeed by ensuring your 993K has design features to reduce your downtime.
  • Longer service intervals on fluids and filters.
  • Safe and convenient service with ground level or platform access and grouped service points.
  • Swing-out doors on both sides of the engine compartment provide easy access to important daily service checks.
  • Ecology drains for ease of service and prevention of spilling potential environmental contaminants.
  • Centralized remote pressure taps.
  • Reduce downtime with VIMS system notifications so your operators and technicians can resolve any problems before failure.

Customer Support

Legendary Cat Dealer Support

A valued partner, your Cat dealer is available whenever you need them.

  • Preventive maintenance programs and guaranteed maintenance contracts.
  • Best-in-class parts availability.
  • Improve your efficiency with operator training.
  • Genuine Cat Remanufactured parts.


Protecting the Environment

Environmental responsibility is designed and built into our 993K's features.

  • Burns up to 10% less fuel than the previous 993K to minimize your CO2 footprint.
  • Engine Idle Shutdown can help you save fuel by avoiding unnecessary idling.
  • Reduce waste to the environment with our maintenance free batteries.
  • Built for multiple lives, the Cat 993K is one of the most rebuilt products. To assist with maximizing machine life, Caterpillar provides a number of sustainable options such as our Reman and Certified Rebuild programs. In these programs, reused or remanufactured components can deliver cost savings of 40 to 70 percent, which lowers operating cost while benefiting the environment.
  • Caterpillar offers retrofit packages to bring new features to older machines, maximizing your resource. And, when you go through the Cat Certified Rebuild program, these retrofit kits are part of the rebuild process.

Bucket Ground Engaging Tools

Selecting the right bucket will determine the productivity of your loader. The process of selection starts with knowing the density of the material you load. From there, you can select the size and appropriate protection strategies that will suit the rated payload targets of your machine. Your Cat dealer can help you configure your bucket or have a custom bucket made to suit your application.

Heavy Duty Rock Bucket

Applications: Face loading tightly compacted pit materials. Moderate-abrasion factors and high-impact loads are suitable for this bucket.

High Abrasion Rock Bucket

Applications: Face loading iron ore. High-abrasion and moderate-impact loads are suitable for this bucket. A smooth floor is also desirable.

Coal Bucket

Applications: For coal or other light density non abrasive materials.

NOTE: Some applications can be very abrasive. Consider that additional bucket protection can affect the performance of the machine through higher horsepower demand, higher fuel consumption and reduced productivity. With this in mind, it is important that you select appropriate protection for your application.

Enhance the productivity of your loader and protect your investment in buckets with our Ground Engaging Tools (GET). Your knowledgeable Cat dealer will work with you to understand your application and needs for the GET that is best for you. For a full list of Cat GET please visit http://www.cat.com/get.

Cat Advansys™ Ground Engaging Tools

Protect expensive components. Reduce your operating costs. Get the most out of your machine's performance. Choose from a variety of performance-built Advansys GET like these to meet your application requirements.

  • CapSure™ Tip Option: Heavy Duty Tip
  • CapSure Tip Option: Heavy Abrasion Tip
  • CapSure Tip Option: Coal Tip
  • CapSure Tip Option: Heavy Penetration Tip
  • Edge Protection Option: CapSure Shrouds
  • Edge Protection Option: Half Arrow Segment
  • CapSure Sidebar Protector
  • MAWPs – on Side and Bottom
  • Base End Edge Protector

Please check out our Parts Catalog for more GET options.

CapSure™ Retention Technology

Simplify GET component replacement with hammerless CapSure retention for fast, easy and safe installation. CapSure tips, shrouds and sidebar protectors are easily locked and unlocked with a 180 degree turn of a 3∕4 inch ratchet.

System Match Efficiency

Application Match

The standard 993K is sized to load the 90 tonnes (100 tons) 777 in 3-4 passes. The 993K High Lift loads the 136 tonnes (150 tons) 785 in six passes.

Efficient Combination

For full truck payloads with minimum loading time, an efficient loading/hauling system starts with a perfect match. Cat wheel loaders are matched with Cat mining trucks to maximize volume of material moved at the lowest operating cost per ton.

Bucket Selection

Selection of the right bucket width depends on penetration requirements and the loading target. Bucket sizes are matched to truck bed capacities for optimum loading efficiency and greater productivity.

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Power Train
    • Brakes, oil-cooled, multi-disc, service/secondary
    • Case drain filters
    • Demand fan
    • Driveline parking brake
    • Engine, Cat C32 ACERT
    • Fuel priming pump (electric)
    • Ground level engine shutoff
    • Precleaner, engine air intake (above hood)
    • Radiator
    • Starting aid, ether, automatic
    • Throttle lock, electronic
    • Torque converter, Impeller Clutch (ICTC) with Rimpull Control System
    • Transmission, planetary powershift, 3F/3R electronic control
  • Electrical
    • Alarm, back-up
    • Alternator, 150-amp
    • Batteries, maintenance free, 4 – 1,400 CCA
    • Deutsch terminal connectors
    • Diagnostic connector starting and charging system
    • Electrical system, 24 volt
    • Electronic Service Center
    • Electronic transmission control
    • Lighting system, halogen (front and rear) lighting, access stairway
    • Starter and charging system, 24V
    • Starter receptacle for emergency start
    • Starter and transmission lockouts (bumper)
  • Operator Environment
    • Advisor Display, displays real time operating information, performs calibrations and customizes operator settings
    • Air conditioner
    • Air precleaner
    • Cab, sound suppressed and pressurized, separate external rollover protective structure (ROPS/FOPS) radio ready for entertainment, includes antenna, speakers and converter (12-volt 10-amp) and power port
    • Cigar lighter, ashtray
    • Coat hook
    • Controls, lift and tilt function
    • Digital display on center console: – Gear – Ground speed – Machine hours
    • Heater, defroster
    • Horn, electric
    • Instrumentation, gauges: – Coolant temperature – Fuel level – Hydraulic oil temperature – Power train oil temperature – Tachometer
    • Light, cab, dome
    • Lunchbox, beverage and manual holders
    • Mirrors, rearview (externally mounted)
    • Rimpull Control System
    • Seat, Cat Comfort (cloth), air suspension, six-way adjustable
    • Seat, trainer with lap belt, 76 mm (3 in) wide
    • Seat belt, retractable, 76 mm (3 in) wide
    • STIC Control System
    • Transmission gear indicator
    • Vital Information Management System (VIMS) with Advisor Display: External Data Port, Customizable Operator Profiles, Cycle Timer, Integrated Payload Control System
    • Wet-Arm wipers/washers (front and rear): – Intermittent front and rear wipers
  • Other
    • Automatic bucket leveler
    • Automatic lift and lower bucket kickout
    • Axle ecology drain
    • Bumper service center
    • Deluxe filtration
    • Emergency platform egress
    • Front walkway
    • Fuel, fast fill system
    • Grouped hydraulic pressure ports
    • Guards, crankcase and power train
    • Hitch, drawbar with pin
    • Implement and steering ecology drains
    • Implement lock lever, cab
    • Linkage pins, maintenance free
    • Oil sampling valves
    • Positive Flow Control implement system
    • Product Link
    • Rims
    • Service center with ground level electrical and fluid connections
    • Sight gauges for steering, implement and transmission oil
    • Stairway, left and right rear access
    • Starter lockout, bumper
    • Steering and transmission lock lever, cab
    • Steering, load sensing
    • Toe kicks
    • Transmission lockout, bumper

Optional Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Power Train
    • –50° C (–58° F) antifreeze
    • Engine coolant heater (120V)
    • Engine coolant heater (240V)
  • Electrical
    • LED warning strobe
    • Object detection (radar)
    • Power converter
    • Rear vision camera
  • Operator Environment
    • AM/FM/CD/MP3 radio
    • Cab precleaner
    • Satellite Sirius radio with bluetooth
    • Sun screen
  • Machine Control And Guidance
    • Cat Terrain ready
  • Spare Rims
    • 40.00×51 spare rim
  • Miscellaneous Attachments
    • Axle oscillation limit stop
    • Egress, powered rear access
    • Rear roading fenders

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