993 Wheel Loader



Technical Specifications
Benefits and Features
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Like all Cat® wheel loaders, the 993 is designed with durability built in, ensuring maximum availability through multiple lifecycles. With optimized performance, the 993 allows you to more efficiently move material. Introduced in 2008, the success of the 993 is a testament to its heritage. Infused with Cat DNA, the roots of performance, durability, comfort and efficiency run deep.

Engine - Tier 4 Final
Engine Model Cat C32B
Bore 5.7 in
Displacement 1959 in³
Emissions U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
Gross Power - SAE J1995 1039 HP
Net Power - EEC 80/1269 974 HP
Net Power - ISO 14396 1024 HP
Net Power - ISO 9249 974 HP
Net Power - SAE J1349 964 HP
Peak Torque - 1,250 rpm 4034 lb/ft
Rated Speed 1800 r/min
Stroke 6.4 in
Torque Rise 33%
Note Standard ambient cooling.
Operating Specifications
Operating Weight - Tier 4 Final* 294687 lb
Bucket Range 12.2-23.7 m3 (16.0-31.0 yd3)
Articulation Angle 43 °
Cat Truck Match - Standard Lift 777
Cat Truck Match - High Lift 777, 785
Operating Weight - Tier 2 Equivalent* 294687 lb
Rated Payload - High Lift 27.5 t
Rated Payload - Standard Lift 30 t
Note *High lift, 50/65-51 (364-6315) tires, standard cooling, 13.8 m3 (18 yd3 ) bucket (496-9912).
Engine - Tier 2 Equivalent
Bore 5.7 in
Displacement 1959 in³
Emissions U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
Engine Model Cat C32B
Gross Power - SAE J1995 1029 HP
Net Power - EEC 80/1269 960 HP
Net Power - ISO 14396 1015 HP
Net Power - ISO 9249 960 HP
Net Power - SAE J1349 952 HP
Peak Torque - 1,250 rpm 4034 ft-lb
Rated Speed 1800 r/min
Stroke 6.4 in
Torque Rise 33%
Note Standard ambient cooling.
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
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 2 8 mile/h
Direct Drive - Forward 3 14.1 mile/h
Direct Drive - Reverse 1 4.9 mile/h
Direct Drive - Reverse 2 8.8 mile/h
Direct Drive - Reverse 3 15.6 mile/h
Note 50/65-51 (364-6315) calculated speeds.
Hydraulic System - Lift/Tilt
Cylinders - Lift/Tilt Double-acting
Lift Cylinder - Bore 10.5 in
Lift Cylinder - Stroke 66.2 in
Lift/Tilt System - Circuit Positive Flow Control
Lift/Tilt System - Pump Variable Piston
Maximum Flow at 1,650 rpm 311 gal/min
Relief Valve Setting - Lift/Tilt 4200 psi
Tilt Cylinder - Bore 9.3 in
Tilt Cylinder - Stroke 40.9 in
Note High Lift configuration.
Hydraulic Cycle Times
Dump 1.8 s
Lower 3.8 s
Lower Float Down 3.1 s
Rack Back 2.4 s
Raise 9.2 s
Total Hydraulic Cycle Time 17.2 s
Note High Lift configuration, calculated speeds.


  • Standard and optional features designed to improve visibility during truck loading operations, including an optional pull-down window shade and heated mirrors, plus lighting packages that provide excellent workspace visibility.
  • Optional Cat MineStar™ Detect system, which includes Cat Vision plus an Object Detection System that combines radar and camera systems to warn operators about light vehicles or stationary hazards within the immediate vicinity of their machines.
  • Improved access and egress, with integrated powered access system, 45-degree-angle wide stairs, emergency egress ladder, and full handrails on each side.
  • Wide walkways with non-skid surfaces and integrated lockout/tagout points designed into the service areas.


  • Reduced vibration, low sound levels and automatic temperature controls.
  • Pressurized cab featuring Next Gen Seat with 9-inch travel, active cooling and heating, adjustable lumbar support, seat cushion tilt adjustment, and air-adjustable bolsters on the seat and backrest.
  • Seat-mounted implement pod and STIC steer that moves with the seat.


  • Steering and Transmission Integrated Control System (STIC™), which combines directional selection, gear selection and steering into a single lever — for maximum responsiveness and control.
  • Low-effort integrated controls that make cycles smoother and faster while reducing operator fatigue.
  • Soft detent Electro-Hydraulic Controls, which are easy to use, and electronically controlled hydraulic cylinder stops that boost comfort.
  • Load-sensing hydraulic steering system, which helps operators achieve precise positioning for easy loading in tight areas with 43 degrees of steering articulation.


  • Impeller Clutch Torque Converter (ICTC) and Rimpull Control System (RCS), which improve rimpull and reduce tire slippage and wear and improve fuel efficiency in certain applications.
  • Cat Planetary Powershift Transmission designed specifically for mining applications for consistent, smooth shifting and efficiency through integrated electronic controls, with three forward and three reverse speeds to match the application.
  • Positive Flow Control Hydraulic System, which boosts efficiency; enables fast, productive cycles; increases bucket feel and control; and delivers consistent performance and efficiency with lower system heat.
  • Cat C32B engine that delivers on-demand performance through the use of turbochargers and aftercoolers, with a 33% torque rise that ensures high lugging forces during digging and acceleration in high rimpull conditions.


  • ​​​​Auto Idle Kickdown with Auto Resume, which reduces the engine speed to low idle when the machine has been throttle-locked at a higher engine speed and has been in an idle state for an extended period of time; automatically resumes engine speed to previous throttle lock speed when the operator begins working.
  • Engine Idle Shutdown, which will automatically shut down the engine after extended periods of idling.
  • Powertrain torque strategy (PTS), a machine control feature that controls engine speed to provide optimum torque converter output torque and reduce engine fuel consumption.


  • Cat Product Link™, which provides remote access to information such as machine systems and diagnostic codes; utilization, fuel usage and payload summaries; and machine location, service meter hours and reporting status.
  • Upgraded touchscreen Advisor Display that enables operators to instantly recall personalized feature settings to decrease set-up time for individual operators, and provides access to productive cycle time, loader payload and fuel usage information.
  • Cycle Timer, which provides operator performance feedback by segmenting a loader truck loading cycle into eight segments and providing average cycle time information in an on-board display.
  • Cat Production Measurement (CPM) Payload Weighing System provides real time payload data to the operator. Operator display only; no wireless communication with Vision Link. Not compatible with Advanced Productivity.


  • Advanced filtration system that boosts the reliability of the hydraulic system.
  • Safe and convenient service thanks to ground-level or platform access; grouped service points; swing-out doors on both sides of the engine compartment; ecology drains; and Cat Sleeve Bearing cartridge pins, which eliminate the need for daily greasing and routine maintenance.
  • Standard Deluxe Service Center, which provides easy access Cat Electronic Technician (ET) as well as fluid level indicators for hydraulic oil, steering oil, windshield washer fluid, fuel, engine oil, engine coolant, and auto lube grease level (if equipped).


  • Variety of bucket options, including heavy-duty rock buckets for applications like face loading tightly compacted pit materials or handling materials of moderate abrasion and high impact; high-abrasion rock buckets for aggressive applications like face loading iron ore; and coal buckets for light density non-abrasive materials.
  • Cat Ground Engaging Tools (GET), which protect expensive components and help you get the most out of your machine’s performance and reduce your operating costs.
  • Cat GET that feature CapSure™ Retention Technology, which simplifies component replacement with hammerless retention for fast, easy and safe installation.
  • Available with a variety of performance-built Advansys GET, including CapSure sidebar protector; MAWPs on side and bottom; base end edge protector; edge protection options including CapSure shrouds and half arrow segment; and four CapSure Tip options: Heavy Duty, Heavy Abrasion, Heavy Penetration and Coal.


  • Delayed Engine Shutdown feature, which protects engine components from shutting down if they are too hot, to extend turbocharger and engine life.
  • Battery Management Strategy software control feature, which extends component life by shutting off electrical power to machine components when it has determined that the engine is not running.
  • Overspeed Prevention, which prevents overspeed of the steering pump when the loader is traveling, supplementing machine retarding.
  • Neutral Coast Inhibit, which inhibits shifting the transmission into neutral gear at high vehicle speeds, increasing service brake life and preventing coasting in neutral.


  • Field-proven solid-steel lift arms, which absorb high load stresses; feature one-piece castings that enhance strength in key pin areas; and are stress-relieved to increase durability and lengthen time to repair.
  • Highly durable structures that achieve multiple lifecycles and withstand the toughest loading conditions, with full box-section rear frame and four-plate loader tower resists torsional shock and twisting forces to maximize the life of mounted components.
  • Frame, powertrain, engine and components that all built to be rebuilt — using new, remanufactured or rebuilt parts and components — to deliver multiple lives of like-new performance at a fraction-of-new price.


  • Optional Cat MineStar™ Terrain for loading, which provides real-time feedback on payloads and design plan progress to increases productivity and accuracy, reduce rework, enhance ore control and improve shift-to-shift operator performance.
  • Optional MineStar Object Detection, which combines radar and camera systems to warn operators about light vehicles or stationary hazards within the immediate vicinity of their machines.
  • Optional MineStar Health, which delivers critical event-based machine condition and operating data and includes comprehensive equipment health and asset monitoring capabilities, with a wide range of diagnostic, analytic and reporting tools.
  • Upgraded touchscreen information display that provides intuitive operation and easy navigation and keeps operators informed about machine systems to decrease service time.


  • Designed to be more efficient and use less fuel, which reduces engine emissions and carbon footprint; Tier 4 Final engine reduces NOx and particulate matter.
  • Engine Idle Shutdown, which saves fuel by making it possible to avoid unnecessary idling.
  • Better control of fluids through use of Cat anti-drain filter housings and component ecology drains.
  • Cat Rebuild and Cat Reman programs, which preserve raw materials, conserve energy and reduce emissions.

Standard Equipment:

  • Powertrain
    • Engine, C32B
    • Brakes, oil-cooled, multi-disc, service/secondary
    • Driveline parking brake
    • Fuel Priming Pump (electric)
    • Ground level engine shutoff
    • Precleaner, engine air intake (above hood)
    • Automatic, ether starting aid
    • Electronic throttle lock
    • Planetary powershift, 3F/3R electronic control transmission
    • Rimpull Control System
    • Standard ICTC
  • Service
    • Case drain filters
    • VIMS download and Cat. Electronic
    • Technician service port in bumper
    • Axle ecology drain
    • Front walkway around cab
    • Ground-level fast-fill fuel system
    • Grouped hydraulic pressure ports
    • Guards, crankcase and power train
    • Drawbar hitch with pin
    • Linkage pins, maintenance free
    • Oil sampling valves
    • Product Link
    • Service center with ground level electrical and fluid connections
    • Sight gauges for steering, implement and
    • transmission oil
    • Transmission lockout, bumper
    • Grease lines
  • Cooling
    • Standard ambient package (recommended for site conditions that do not exceed 43°C [110° F])
  • Electrical And Lighting
    • 150-amp alternator
    • Four 1400 CCA batteries
    • Deutsch terminal connectors
    • 24V starting and charging system
    • 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 receptacle for emergency start
    • Starter and transmission lockouts in bumper
  • Cold Weather
    • Heated Seat
  • Safety
    • Back-up alarm
    • Mirrors, rearview (externally mounted)
    • Seat, trainer with lap belt, 76 mm (3 in) wide
    • Seat belt, retractable, 76 mm (3 in) wide
    • Emergency platform egress
    • Implement lock switch
    • Stairway, left and right rear access
    • Steering and transmission lock lever, cab
    • Toe kicks
  • Operator Environment
    • Premium seat with heated and actively cooled leather, adjustable lumbar support, air adjustable bolsters on the seat and backrest, seat cushion tilt adjustment, and adjustable-length seat cushion
    • 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)/Falling Object Protective Structure (FOPS) radio ready for entertainment, includes antenna, speakers and converter (12-volt 10-amp) and power port
    • Cigar lighter, ashtray
    • Coat hook
    • Dual lever lift and tilt function controls
    • 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
    • Wet-Arm wipers/washers (front and rear): – Intermittent front and rear wipers
    • Bonded glass, tinted
  • Efficiency
    • Automatic bucket leveler
    • Automatic lift and lower bucket kickout
    • Positive Flow Control implement system
    • Load-sensing steering
  • Linkage
    • Standard lift (30 tons face)

Optional Equipment:

  • Powertrain
    • ICTC with lock up clutch
    • Engine Brake
  • Service
    • Automatic Autolube
  • Cooling
    • High ambient package (recommended for site conditions that do not exceed 55° C [131°F])
  • Electrical And Lighting
    • Product Link (Cellular)
    • Product Link (Satellite)
  • Cold Weather
    • Fuel heater (heated by recirculation using engine heat and a heat exchanger) (recommended in conditions from –18° C to –30° C [0° F to –22° F])
    • –50° C (–58° F) antifreeze
    • Heated Mirrors
    • 120V or 240V coolant heating elements (recommended in conditions from –18° C to –30° C [0° F to –22° F])
  • Safety
    • LED warning strobe
    • Object detection (radar)
    • Rear vision camera
    • Egress, powered rear access
    • Secondary Steering
    • Wheel Chocks
  • Operator Environment
    • Joystick lift and tilt function controls
    • AM/FM/CD/MP3 radio
    • Cab precleaner
    • Satellite Sirius radio with Bluetooth.
    • Sun screen
    • Rubber-mounted, high-impact resistant solar control glass (Complies with AS/NZS 2080)
  • Efficiency
    • ICTC with lock-up clutch
  • Machine Control And Guidance
    • Cat Terrain ready
  • Rims And Tires
    • 40.00x51 spare rim
    • Tires – 50/65R51
    • Tires – 50/65-51
    • Axle oscillation limit stop
  • Load And Carry Or Extensive Tramming
    • Ride Control
    • Rear Roading Fenders
  • Linkage
    • High lift (27.5 tons face)
  • Sound Suppression
    • Sound-suppression package

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