785 Mining Truck (LRC, Tier 4 Final / EU Stage V)



Technical Specifications
Benefits and Features
360 View

The 785 Large Mining Truck was Caterpillar’s first entry into the mining industry more than three decades ago and has been a proven performer on sites around the world ever since. And now it’s the first to combine a game-changing level of efficiency with industry-leading physical availability to deliver the next generation of productive hauling. It all starts with the operator, who sits in a state-of-the-art environment designed for efficiency and equipped with features that increase comfort, automate functions, provide real-time information and boost confidence. The 785 also delivers significant improvements in serviceability and reliability, enhanced connectivity and easier technology integration. These improvements — and more — take an already proven truck to the next level of productivity.

Weights - Approximate
Nominal Rated Payload (33.00R51 Tires) 153 ton (US)
Rated Gross Machine Weight (33.00R51 tires) 550000 lb
Nominal Rated Payload (36.00R51 Tires) 157 ton (US)
Rated Gross Machine Weight (36.00R51 tires) 564000 lb
Chassis Weight (33.00R51 Tires) 186799 lb
Chassis Weight (36.00R51 Tires) 193192 lb
Body Weight 57779 lb
Note (1) Consult your tire manufacturer for maximum tire load
Note (2) Chassis weight with full fuel and fluids, standard & mandatory attachments, hoist, body mounting group, rims, and tires.
Note (3) Body weight varies depending on body selection and configuration.
Gross Power - SAE J1995 1600 HP
Engine Model Cat® 3512E
Net Power - SAE J1349 1509 HP
Emissions Rating Fuel Optimized
Bore 6.7 in
Stroke 8.5 in
Displacement 3573 in³
Note (1) Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note (2) U.S. EPA Tier 4 Final / EU Stage V available for applicable markets.
Note (3) Additional fuel optimized selectable power ratings: 1,450 hp
Weight Distributions - Approximate
Front Axle - Empty 48%
Rear Axle - Empty 52%
Front Axle - Loaded 33%
Rear Axle - Loaded 67%
Note Weight distributions optimized with Cat body.
Final Drives
Type Double reduction, planetary with full floating axles.
Differential Ratio 2:10:01
Planetary Ratio 10.83:1
Total Reduction Ratio 22.75:1
Standard Tire 33.00R51
Optional Tire 36.00R51
Rims 610 mm (24") Rims (standard). 660 mm (26") Rims (optional).
Note (1) Quick Change Rims optional.
Note (2) Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.
Braking System
Service Brakes Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area 9487 in²
Rear - Wet Disc Brake Surface Area 13908 in²
Standards Service and Secondary: ISO 3450:2011
Parking Brake Four corner, multi disc, spring applied, hydraulically released
Capacity - MSD II - 100% Fill Factor
Struck 72 m^3 / 94 yd^3
Heaped (SAE 2:1) 99 m^3 / 129 yd^3
Note Consult your local Cat dealer for body recommendations.
Body Hoists
Type Twin, two-stage hydraulic cylinders with snubbing valve.
Pump Flow - High Idle 192.7 gal/min
Relief Valve Setting - Raise 2500 psi
Body Raise Time - High Idle 15.2 s
Body Lower Time - Float High Idle 15.9 s
Body Lower Time - Float Low Idle 16.2 s
Body Power Down- High Idle 15.9 s
Type Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
Effective Cylinder Stroke - Front 12.6 in
Effective Cylinder Stroke - Rear 6.5 in
Rear axle - Oscillation +/- 5 degrees
Air Conditioning HFC - 134A refrigerant: 24,500 Btu/h
Heater / Defroster 33300 Btu/h
Note The operator sound pressure level, 77 dB(A) with direct drive and 75 dB9A) with optional clutch, tested to ISO 6396:2008.
ROPS Standards (1) ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer.
FOPS Standards FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 for Operator and ISO 13459:2012 Level II for Trainer.
Steer Angle 36 °
Turning Diameter - ISO 7457:1997 (33.00R51 tires) 97.75 ft
Steering Standards ISO 5010:2007
Service Refill Capacities
Fuel Tank 410 gal (US)
Diesel Exhaust Fluid Tank 36 gal (US)
Cooling System 100 gal (US)
Crankcase 54 gal (US)
Front Wheels - Each 8 gal (US)
Differential - Final Drives 139 gal (US)
Steering Tank 29 gal (US)
Steering System - Includes Tank 45 gal (US)
Brake/Hoist Tank 135 gal (US)
Brake Hoist System - Includes Tank 160 gal (US)
Torque Converter - Transmission System - Including Sump 46 gal (US)
Dimensions (All dimensions are approximate. MSD II Body, 33R51 tires, unloaded machine.)
Height - Top of ROPS 17.09 ft
Overall Body Length 39.32 ft
Inside Body Length 27.29 ft
Overall Length 39.23 ft
Wheel Base 17 ft
Rear Axle - Tail 12.56 ft
Ground Clearance 3.29 ft
Dump Clearance 3.7 ft
Loading Height - Empty 17.39 ft
Inside Body Depth - Maximum 9.15 ft
Overall Height - Body Raised 39.48 ft
Operating Width 24.72 ft
Centerline Front Tire Width 15.91 ft
Engine Guard Clearance 3.41 ft
Overall Canopy Width 24.81 ft
Outside Body Width 22 ft
Inside Body Width 19.72 ft
Front Canopy Height 19.8 ft
Rear Axle - Clearance 3.25 ft
Centerline of Rear Dual Tire Width 14.06 ft
Overall Tire Width 20.59 ft
Forward - 1 7.5 mile/h
Forward - 2 10.2 mile/h
Forward - 3 13.8 mile/h
Forward - 4 18.6 mile/h
Forward - 5 25.2 mile/h
Forward - 6 34 mile/h
Reverse 6.8 mile/h
Top Speed - Loaded 34 mile/h
Note Maximum travel speeds with standard 33.00-R51 tires.


  • The Advanced Power Electronic Control Strategy (APECS) enables faster cycle times thanks to more continuous torque and rimpull.
  • Forward momentum and torque are maintained through each shift, with optimum gear selection resulting in faster acceleration.
  • The 785 delivers a 6% higher TKPH /TMPH (tonne-kilometer-per-hour / ton-mile-per-hour) thanks to larger tire options that allow allow mines to take advantage of higher speeds, particularly in flat, long-haul, high-speed applications.
  • Productivity-enhancing features such as Hill Start Assist with Anti-Rollback, Enhanced Traction Control, Dynamic Stability Control (DSC), Anti-lock Brake System (ABS), Machine Speed Limiting and Cruise Control improve machine responsiveness and controllability while improving cycle times and reducing operator fatigue.


  • Wide, slip-resistant surfaces and hand rails, plus an optional powered access ladder, improve access and egress.
  • Superior control is delivered by a patented braking system that provides immediate, fade-resistant braking and retarding.
  • Visibility is enhanced by an optional 360-degree Surround View camera, which offers a bird’s-eye view.
  • The Cat MineStar™ Object Detection system combines radar and camera systems to warn operators about light vehicles or stationary hazards within the immediate vicinity of their machines.
  • The optional Driver Safety System alerts the operator if fatigue or distraction are detected.


  • The cab provides 34% more operator space than D-Series models. It’s 17% wider and offers 11% more legroom and 19% more shoulder room. Controls, levers and switches are positioned for ease of use.
  • With 40% less Sound Pressure Level (SPL), automated temperature control and cab filtration, operators enjoy a safer and more comfortable environment.
  • A walkthrough cab with fully adjustable center console, easy-to-adjust seat and increased leg room makes the cab ideal for operators of all sizes.
  • The next generation seat is four-point-restraint ready and incorporates features like thigh tilt and extensions, air adjustable side and lumbar bolsters, and heated and cooled cushions.
  • Operators enjoy a more comfortable ride thanks to smoother transitional shifting and reduced shift jerk levels provided by APECS controls.


  • Higher resolution displays improve access to information. Machine data, controls and guidance information are consolidated onto two ideally located 10-inch screens.
  • The optional Auto Hoist feature automatically raises the body and controls engine speed, simplifying operation and minimizing cycle times.
  • Speed coaching gives operators real-time feedback on how to operate the truck to maximize its productivity.
  • The payload monitoring system comes with more accurate measurements, providing immediate feedback to the operator.


  • The new modular HVAC (heating, ventilation and air conditioning) system improves reliability and consolidates components so the entire system can be removed and replaced quickly.
  • A modular radiator reduces engine removal and installation time and enables rebuilds to be completed off the truck.
  • New remote flash and remote troubleshooting capabilities provide immediate access to the latest software updates and make it possible to troubleshoot the machine remotely.
  • Time spent on regular maintenance procedures is reduced thanks to features such as extended-interval filters with ground-level access; grouped service points and optional centralized service center; cleaner hydraulic and electrical routings; SOS and pressure ports for faster, safer oil sampling and troubleshooting; and fluid-level sight glasses.
  • A 100% airless electric start option eliminates air system maintenance from the machine and improves uptime.


  • Longer-life components, extended service intervals and easier maintenance deliver consistently high mechanical availability.
  • A reduction in torque spikes and fewer variations in engine speed, made possible by APECS controls, deliver longer engine and powertrain component life.
  • The 785 frame uses a box-section design, incorporating two forgings and 21 castings in high-stress areas with deep penetrating and continuous wrap-around welds to resist damage from twisting loads without adding extra weight. The mild steel frame provides flexibility, durability and resistance to impact loads.
  • Component life is enhanced thanks to the standard rear-axle continuous filtration feature. Cleaner oil helps promote lubrication that leads to longer life
  • The frame, powertrain, engine and components are built to be rebuilt — delivering multiple lives of like-new performance at a fraction-of-new price.


  • Caterpillar designed and manufactured bodies are integrated with the chassis as a unit to optimize performance and incorporate optional Tier 4 components, including body exhaust heat.
  • The lightweight Mine Specific Design (MSD) body is designed with built-in carryback reduction features (front wall curved transition and corner pop-out plates) and is available with optional application-specific body liners.
  • Intended for tough applications, the heavy-duty Dual Slope body provides excellent load retention, maintains a low center of gravity with optimum load distribution and reduces shock loading.


  • The 785 is designed to use less fuel, which reduces engine emissions, and there is zero fuel burn during retarding. The Tier 4 Final engine reduces NOx and particulate matter.
  • The Cat 3512E engine’s 12-cylinder four-stroke design uses long, effective power strokes for more complete fuel combustion and optimum fuel efficiency.
  • The 785 engine is compatible with diesel fuel blended with lower-carbon intensity fuels such as biofuels and renewable fuels.
  • Features like oil renewal systems, continuous rear axle filtration, extended life filters and longer maintenance intervals decrease the amount of waste contributed to the environment.
  • By rebuilding machines and components, the Cat Rebuild and Cat Reman programs preserve raw materials, conserve energy and reduce emissions.


  • The 785 is available in a cold-weather configuration that makes it ideal for mines operating in frigid environments. It features automatic engine thermal management, a variable fan speed for low temperature operation, and an electric- or air-start option.
  • The 3512E engine gives you the ability to select the power rating to match your current fleet performance or to achieve faster cycle times.
  • The 23% net torque rise provides unequaled lugging force during acceleration, on steep grades and in rough underfoot conditions.
  • Tire options allow you to select the tire that best matches your application, with a larger tire for flat, long, high-speed applications. The frame is designed to maintain the same turning diameter while accommodating larger tires.
  • The 785 is available in two options to meet emissions standards. The optional Tier 4 Final engine meets the strictest standards while the LRC engine is available in those countries that are less regulated.


  • MineStar Fleet is a fleet monitoring system that can be used to measure, manage and maximize the overall hauling operation.
  • Additional MineStar Detect offerings include Awareness, which can provide warnings, and the in-cab Driver Safety System, which intervenes when it detects fatigue or distraction.
  • Machine health and condition monitoring solutions enable a proactive approach to maintenance.


  • Next generation connectivity delivers faster data transfers, better access to data, consistent data communication, more actionable data, improved data analytics and new diagnostic capabilities.
  • The backbone of the next generation machine is 100 Mbps two-wire ethernet communication across the machine controllers, sensors that are optimized for data analytics, and robust controls.
  • Advanced connectivity on the 785 truck is enabled by standard cellular 4G/LTE, optional dual mode 4G/LTE and Satellite Product Link™, or locally installed Wi-Fi.
  • Every machine from the factory comes with Product Link Elite as a standard offering. This solution enables the truck to collect and transmit information into locally-hosted or cloud-hosted applications.

Standard Equipment:

  • Electrical
    • 24V electrical system, low maintenance batteries (2) 93 amp-hour
    • Alarm, backup
    • Brushless alternator, 225 amp
    • Ground accessible power control box: Ethernet VIMS port and VIMS lamp; Engine starter; transmission and battery lockouts
    • Jump start/battery charge receptacle
    • LED payload indicator lamps
    • LED Lighting system: Back-up and hazard lights, Curb lights, (one) RH side, (one) LH side, Turn signals (front and rear), Engine compartment lights, Headlights with low-high beam selector, Ladder light and service deck lights, Stop/tail lights
  • Fluids
    • Extended Life Coolant to — 35° C (— 30° F)
  • Operator Environment
    • 5V USB charging port
    • 12V auxiliary power connection
    • Cup holders
    • Diagnostic connection port COM3 and Ethernet
    • Delayed Engine Shutdown
    • Dome courtesy light and map lights
    • Entertainment radio ready: Speakers, Optional Antenna (AM/FM/WB/satellite radio), Radio mounting provisions and 12V power supply
    • Fire suppression ready
    • Floor mat, multi-piece & replaceable
    • Gauges and indicators panel: Critical oil and coolant temperatures; Fuel and DEF level (if applicable); Engine system, brake and transmission fault indicators; Operator selectable max. machine speed by rotary dial; Speedometer, Tachometer
    • Heated mirrors, right and left
    • Hoist, body control
    • Interactive touchscreen vehicle information display: Day/night mode; Action alarm; Quad gauge display
    • Operator and trainer air suspension seats
    • Operator Door Power Window
    • Provision for customer accessory mounting
    • Push button secure start
    • Retractable front visor
    • ROPS cab, insulated/sound suppressed
    • Stairway and walkway access, 600 mm (24 in)
    • Steering wheel, tiltable, telescopic
    • Self-filling to windshield washer fluid from AC condensate
    • Storage locations for operator gear
    • Three point seat belt for operator seat
    • Windshield wiper, intermittent control / washer
    • Unitized hydraulic powered HVAC with automatic temperature control
    • Ventilated operator seat
  • Power Train
    • 33R51 power train with standard rims
    • Cat 3512E engine: Automatic engine and DEF thermal management (if applicable); Automatic low voltage idle management; Air cleaner with precleaner (two); Turbocharging (four) with air-to-air aftercooler; Mechanical Electronic Unit Injector (MEUI-A) fuel system; Automatic starter protection; Automatic ether starting aid
    • Hydraulic braking system: Automatic retarder control (ARC), adjustable and automatic; Brake release motor (towing); Engine over speed protection; Extended life brake disc material; Hill start assist/Anti roll back strategy; Oil-cooled, multi-disc (front and rear) — Service, retarding, parking, secondary; Park brake integrated with gear selector
    • Transmission :Six-speed, automatic power shift with Electronic Clutch Pressure Control (ECPC); Advanced Productivity Electronic Control Strategy (APECS); Body-up reverse neutralizer; Body-up shift inhibitor; Downshift/reverse shift inhibitor; Directional shift management; Enhanced Traction Control System; Programmable top gear; Oil level sensor; Neutral coast inhibitor; Neutral start switch; Lock-up torque converter; Rear axle continuous lubrication/filtration
    • Turbine air starter with air tank, air horn and automatic lubrication system
  • Other Equipment
    • Auxiliary "buddy" dumping quick connect
    • Auxiliary connection 'user defined shutdown'
    • Auxiliary steering quick connect (towing)
    • eOMM
    • Fast fill fuel and DEF remote fill system
    • Guards for rotating components
    • Hill Start Assist
    • Hydraulic Filters, 1,000 hours
    • Remote flash software and troubleshooting
    • Secondary steering (automatic)
    • Tie off points
    • Tow hooks (front) and tow pin (rear)
    • Sight glasses for hydraulic oils
    • SOS℠ ports
    • Vital Information Management System (VIMS)
  • Cat Technology Products
    • Cyber security
    • Integrated object detection system with touchscreen display
    • Tire Payload Monitoring System 2 (TPMS 2)
    • Product Link Elite

Optional Equipment:

  • Electrical
    • Auxiliary rear work lights, (one) LH side
    • Digital Payload Display
    • LED Lighting system: Additional lighting package, Auxiliary VIMS, Body rear, Seat & park brake
    • Workshop horn
  • Truck Bodies
    • MSD II body: 100 m3 (131 yd3)
    • Dual slope body: 78 m3 (102 yd3)
    • Body specific side wall and tail extensions
    • Customizable body liner packages
    • Body heat exhaust
    • Rock ejectors
    • Rear body lighting group: Directional signals, Stop/tail lights
  • Fluids
    • Extended Life Coolant to — 50° C (— 58° F)
  • Operator Environment
    • Emergency stop
    • Deluxe Cab: Advanced cabin filtration system; Catwalk and handrails for rear cab access; Heated, cooled and ventilated front seat; Power right side window; Suspended companion seat; Storage tray
  • Power Train
    • No air – electric starter with 93-amp hour batteries (four), electric horn and automatic lubrication system
    • Hydraulic braking system: Advanced ground control with Anti-lock Braking System (ABS) and Dynamic Stability Control (DSC)
    • Variable speed fan drive
    • Transmission: Engine pre-lubrication system; Rear axle continuous lubrication/filtration with cooler
  • Other Equipment
    • 2560 L (676 gal) fuel tank (non-Tier 4)
    • Body heat exhaust
    • Bumper towing – center pin kit
    • Cold weather start (block heater)
    • Communication Ar – Minestar radio
    • Fire extinguisher, portable
    • Five piece crankcase guards
    • Fuel heater, fuel water separator
    • Fuel tank mud guard
    • Gauge, brake wear indicator
    • Ground accessible fluid service center, hydraulic and coolant
    • Hub odometer, kilometers
    • Powered access stairway
    • Rim Diffuser
    • Wheel chocks
    • Wireless Electronic Technician (ET)
    • Working at heights protection
  • Cat Technology Products
    • Cruise control
    • 360 degree surround view camera
    • 4G cellular/satellite dual mode
    • Connectivity bundle (includes: wireless operator ID, bluetooth key FOB to start)
    • Driver Safety System (DSS) 4.0 Ready
    • Minestar GPS
    • Minestar communication group (enables: Minestar Fleet, Aux, and Truck Spotting)
    • Oil Renewal System (ORS) (non-Tier 4)
    • Road Analysis Control (RAC)

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