785D Mining Truck

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PRODUCTIVITY

  • The 785D is powered by the 3512C HD engine, a 12-cylinder, four-stroke design that uses long, effective power strokes for more complete fuel combustion and optimum fuel efficiency.
  • The 23% net torque rise provides unequaled lugging force during acceleration, on steep grades and in rough underfoot conditions. Torque rise effectively matches transmission shift points for maximum efficiency and fast cycle times.
  • The mechanical drive powertrain and power shift transmission provide unmatched efficiency and control on steep grades, in poor underfoot conditions and on haul roads with high rolling resistance.
  • The engine provides additional retarding by running against compression with zero fuel burn on downhill hauls, which increases fuel efficiency.

SAFETY

  • Access and egress are safer thanks to the 600-mm-wide (24-in-wide) diagonal stairway, slip-resistant surfaces and hand rails, plus an optional powered access ladder.
  • Superior control is delivered by a patented braking system that provides immediate, fade-resistant braking and retarding.
  • The 785D is designed for excellent all-around visibility and clear sight lines, enhanced by wide-angle mirrors and the standard 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.
  • Dumping operations are safer thanks to a body raised indicator and reverse neutralizer when dumping.
  • Toe guards on the front and side platforms provide protection from slipping and also to prevent any tools or loose items falling from the platform when maintenance or service work is being performed.

OPERATOR COMFORT

  • Operators enjoy an ergonomic layout, excellent all-around visibility, and controls, levers, switches and gauges that are positioned for ease of use.
  • The integral, sound-suppressed ROPS/FOPS cab is resiliently mounted to the mainframe to isolate the operator from sound and vibration for a quiet, secure and comfortable ride.
  • The cab has numerous features that enhance comfort and reduce fatigue, such as an air suspension seat, reduced vibration, air conditioning and sound suppression.

SERVICEABILITY

  • Time spent on regular maintenance procedures is reduce with easy access to daily service points and major components; ground-level access to tanks, filters, drains and engine shutdown; a maintenance platform that provides access to the engine engine, steering hydraulic tank and battery compartment; and an optional fast-fill service center, which enables high-speed fuel and oil exchange.
  • Enhanced serviceability and 500-hour service intervals are designed to increase machine availability and productivity.
  • Electric connectors are sealed to lock out dust and moisture, harnesses are braided for protection, and wires are color
     - coded for easy diagnosis and repair.
  • The VIMS onboard diagnostic systems continuously monitor all critical machine functions and components to help locate faults quickly for faster repair.

DURABILITY AND LONG LIFE

  • The 785D frame uses a box-section design, incorporating two forgings and 24 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.
  • Wheel Stations offer improved durability, which results in less frequent replacement for higher uptime and less unscheduled maintenance.
  • Component life is enhanced thanks to the standard rear-axle continuous filtration feature. Cleaner oil helps promote lubrication that leads to longer life.
  • Uptime is improved thanks to planned component replacement intervals that target up to a 20,000 SMU for the engine, plus component commonality with proven 3500 HD engines
  • The frame, powertrain, engine and components are built to be rebuilt — delivering multiple lives of like-new performance at a fraction-of-new price.

CAT BODIES

  • Cat bodies are the best choice for the 785D. They’re designed to be an integral part of the entire vehicle system, ensuring you achieve maximum chassis life.
  • The High Performance (HP) body features a lightweight, simplified and durable design that provides complete front machine coverage and extended overhead protection.
  • Available in several sizes, the MSD II body is ideal for mature mines with good operational and maintenance practices. It can be lined or unlined, with a site-specific body designed to maximize performance.
  • Intended for tough applications including greenfield sites and contracting mines, the Dual Slope body provides excellent load retention, maintains a low center of gravity with optimum load distribution and reduces shock loading.
  • The specialty combination body for coal and coal overburden accommodates light density material while maintaining payload potential.

SUSTAINABILITY

  • We’ve designed the 785D with a number of enhancements that lessen its impact on the environment. Features like engine oil renewal systems and continuous rear axle filtration decrease the amount of waste contributed to the environment.
  • The engine provides additional retarding by running against compression on downhill hauls. During retarding applications, the engine ECM does not inject fuel into the cylinders for exceptional fuel economy.
  • We continue to research alternative energy sources such as biofuels and a liquefied natural gas-supplied Dynamic Gas Blending solution, and we’re implementing power options like electrification and trolley to find new ways to reduce emissions.
  • Cat engines are compatible with diesel fuel blended with lower-carbon intensity fuels such as biodiesel FAME (fatty acid methyl ester). They are also compatible with renewable fuels such as HVO (Hydrotreated Vegetable Oil) and GTL (Gasto-Liquid) alternative fuels that are drop-in replacements for diesel. HVO and GTL are acceptable for use in all Cat engines at any blend level and up to 100%.
  • By rebuilding machines and components, the Cat Rebuild and Cat Reman programs preserve raw materials, conserve energy and reduce emissions.

TECHNOLOGY SOLUTIONS

  • MineStar Fleet is a fleet monitoring system that can be used to measure, manage and maximize the overall hauling operation.
  • The MineStar Detect in-cab Driver Safety System intervenes when it detects fatigue or distraction
  • Machine health and condition monitoring solutions enable a proactive approach to maintenance.
Engine
Gross Power - SAE J1995 1082 kW (1450 hp)
Engine Model Cat® 3512C HD-EUI
Bore 170 mm (6.7 in)
Stroke 215 mm (8.4 in)
Displacement 58.56 l (3573.6 inu00b3)
Emissions Fuel Optimized
Weights - Approximate
Rated Gross Machine Weight 249476 kg (550000 lb)
Chassis Weight 83820 kg (184791 lb)
Body Weight Range HP (144 cyd): 20 917 kg (46,114 lb); nHP Coal (192 cyd): 21 948 kg (48,387 lb); nX body: 25 091 kg (55,316 lb); nDual Slope: 23 538 kg (51,892 lb); nMSD II: 21 188 kg (46,712 lb); nGateless Coal (183 cyd): 24 019 kg (52,952 lb); nGateless Coal (217 cyd): 25 066 kg (55,261 lb);
Nominal Rated Payload 145 t (160 ton (US))
Transmission
Forward - 1 12.1 km/h (7.5 mile/h)
Forward - 2 16.3 km/h (10.2 mile/h)
Forward - 3 22.2 km/h (13.8 mile/h)
Forward - 4 29.9 km/h (18.6 mile/h)
Forward - 5 40.6 km/h (25.2 mile/h)
Forward - 6 54.8 km/h (34 mile/h)
Reverse 11 km/h (6.8 mile/h)
Top Speed - Loaded 54.8 km/h (34 mile/h)
Final Drives
Note Double reduction. planetary with full floating axles.
Differential Ratio 2.10:1
Planetary Ratio 10.83:1
Total Reduction Ratio 22.75:1
Suspension
Effective Cylinder Stroke - Front 320 mm (12.6 in)
Effective Cylinder Stroke - Rear 165 mm (6.5 in)
Rear axle - Oscillation u00c2u00b15.4 degrees
Brakes
Brake Surface - Front 61269 cmu00b2 (9497 inu00b2)
Brake Surface - Rear 89727 cmu00b2 (13908 inu00b2)
Standards ISO 3450:2011
Body Hoists
Note (1) Twin, two-stage hydraulic cylinders with snubbing valve
Pump Flow - High Idle 750 L/min (198 gpm)
Relief Valve Setting - Raise 17238 kPa (2500 psi)
Body Raise Time - High Idle 15.2 s (15.2 s)
Body Lower Time - High Idle 15.9 s (15.9 s)
Body Lower Time - Float 16.2 s (16.2 s)
Body Power Down - High Idle 15.9 s (15.9 s)
Note (2) Power raise in both stages; power down in second stage.
Body
Note (1) HP Body, Low Volume 85m3 (111 yd3);nHP Body, Standard Volume 110m3 (143 yd3);nHP Body, High Volume u2013 Coal 147m3 (192 yd3);nMSD II Body, Standard (SAE 2:1) 99 m3 (130 yd3); nX Body, Standard (SAE 2:1) 85 m3 (111 yd3); nDual Slope Body, Standard (SAE 2:1) 78 m3 (102 yd3); nCoal Body Gateless, Standard (SAE 2:1) 166 m3 (217 yd3); nCoal Body Gateless, Standard (SAE 2:1) 183 m3 (183 yd3)
Note (2) Refer to the Cat Mining Trucks Payload Management Guidelines AEXQ0250 for maximum gross machine weight limitations
Steering
Steer Angle 31 u00b0 (31 u00b0)
Turning Diameter - Front 29.8 m (97.7 ft)
Steering Standards ISO 5010:2019
Weight Distributions - Approximate
Front Axle - Empty 47.50%
Rear Axle - Empty 52.50%
Front Axle - Loaded 32.60%
Note Weight distributions optimized with Cat body.
Service Refill Capacities
Fuel Tank - Standard 1893 l (500 gal (US))
Cooling System 490 l (129 gal (US))
Crankcase 204 l (54 gal (US))
Differential - Final Drives 650 l (171 gal (US))
Steering Tank 90 l (24 gal (US))
Steering System - Including Tank 117 l (31 gal (US))
Brake/Hoist Hydraulic Tank 337 l (89 gal (US))
Fuel Tank - Optional 2498 l (600 gal (US))
Brake Hoist System - Includes Tank 641 l (169 gal (US))
Torque Converter/Transmission System - Including Sump 248 l (65.51 gal (US))
Front Wheels - Each 13.5 l (3 gal (US))
Cab
Heater / Defroster 34462 Btu/kWh (10.1 MW·h)
Air Conditioning 6.9 kW (23,543 BTU/hr)
ROPS Standards (1) ISO 3471:2008 and ISO13459:2012
FOPS Standards ISO 3449:2005 Level II and ISO 13459:2012 Level II
Sound
Sound Standards The dynamic operator sound pressure levels are measured according to work cycle procedures specified in ISO 6396:2008 is 80 dB(A).
Sound Standards (1) The dynamic exterior sound power level for the standard machine is tested using ISO 6395:2008 procedures is 121 dB(A).
Sound Standards (2) Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.
Tires and Rims
Note 1 Standard Tire 33.00-R51 (E3 and E4)
Note 2 Quick Change Rims optional. Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and Tonne Kilometers Per Hour (TKPH) Ton-Miles Per Hour (TMPH) capabilities.
Braking System
Service Brakes Four corner, Wet multi disc, oil cooled, air over hydraulic actuated
Front Wet Disc Brake Surface Area 61269 cmu00b3 (9497 inu00b3)
Rear - Wet Disc Brake Surface Area 89727 cmu00b3 (13908 inu00b3)
Standards ISO 3450:2011
Parking Brakes Four-corner, wet multi disc, Spring applied, Hydraulically Released
Dimensions
Height - Top of ROPS 5560 mm (18.2 ft)
Overall Length 12310 m (40.4 ft)
Wheel Base 5180 mm (17 ft)
Rear Axle - Tail 4690 mm (15.4 ft)
Ground Clearance 1165 mm (3.8 ft)
Dump Clearance 1365 mm (4.5 ft)
Loading Height - Empty 5615 mm (18.4 ft)
Overall Height - Body Raised 11895 mm (39 ft)
Centerline Front Tire Width 4870 mm (16 ft)
Engine Guard Clearance 1000 mm (3.3 ft)
Overall Canopy Width 7560 mm (24.8 ft)
Outside Body Width 6076 mm (19.9 ft)
Inside Body Width 6060 mm (19.9 ft)
Front Canopy Height 5880 mm (19.3 ft)
Rear Axle - Clearance 980 mm (3.2 ft)
Centerline of Rear Dual Tire Width 4285 mm (14.1 ft)
Overall Tire Width 6265 mm (20.6 ft)
Dimensions (Approximate)
Height - Top of ROPS 5530 mm (18.1 ft)
Overall Length 12520 mm (41.1 ft)
Wheel Base 5180 mm (17 ft)
Rear Axle - Tail 3780 mm (12.4 ft)
Ground Clearance 1165 mm (3.8 in)
Dump Clearance 1275 mm (4.2 ft)
Loading Height - Empty 4890 mm (16 ft)
Overall Height - Body Raised 11860 mm (38.9 ft)
Centerline Front Tire Width 4870 mm (16 ft)
Engine Guard Clearance 1045 mm (3.4 ft)
Overall Canopy Width 7660 mm (25.1 ft)
Outside Body Width 6090 mm (20 ft)
Inside Body Width 5850 mm (19.2 ft)
Front Canopy Height 5530 mm (18.1 ft)
Rear Axle - Clearance 3.2 ft (980 mm)
Centerline of Rear Dual Tire Width 4285 mm (14.1 ft)
Overall Tire Width 6265 mm (20.6 ft)
Dimensions (All dimensions are approximate. MSD II Body, 33R51 tires, unloaded machine.)
Height - Top of ROPS 5610 mm (18.4 ft)
Overall Length 12685 mm (41.6 ft)
Wheel Base 5180 mm (17 ft)
Rear Axle - Tail 4610 mm (15.1 ft)
Ground Clearance 1165 mm (3.8 ft)
Dump Clearance 1125 mm (3.7 ft)
Loading Height - Empty 5300 mm (17.4 ft)
Overall Height - Body Raised 11800 mm (38.7 ft)
Centerline Front Tire Width 4870 mm (16 ft)
Engine Guard Clearance 1045 mm (3.4 ft)
Overall Canopy Width 7560 mm (24.8 ft)
Outside Body Width 6250 mm (20.5 ft)
Inside Body Width 6020 mm (19.8 ft)
Front Canopy Height 5890 mm (19.3 ft)
Rear Axle - Clearance 980 mm (3.2 ft)
Centerline of Rear Dual Tire Width 4285 mm (14.1 ft)
Overall Tire Width 6265 mm (20.6 ft)

Standard Equipment

  • POWERTRAIN
    • Engine, 3512C 1450 hp, Fuel optimized
    • Diesel engine/turbocharged/aftercooled
    • Ground level engine shutdown
    • Ether starting aid (automatic)
    • Aftercooler
    • Elevated low idle control
    • Automatic starter protection
    • Multi-point oil pressure sensing
    • Muffler
    • Fan, conventional drive
    • Air start
    • Engine idle shutdown
  • BRAKING SYSTEM
    • Brake release motor (towing)
    • Oil-cooled, wet multi-disc (front and rear)/(service, resistive braking, parking, secondary)
    • Automatic resistive braking control
    • Engine overspeed protection
    • Extended life brake disc material
  • TRANSMISSION
    • 6-speed, automatic powershift with electronic Transmission Chassis Control (TCC)
    • Controlled throttle shifting
    • Individual clutch modulation
    • Body-up shift inhibitor
    • Directional shift management
    • Downshift/reverse shift inhibitor
    • Oil level sensor
    • Neutral start switch/coast inhibitor
    • Body-up reverse neutralizer
    • Programmable top gear
    • Lock-up torque converter
    • Rear axle continuous lubrication/filtration
  • ELECTRICAL
    • Back up alarm
    • Alternator 105 amp
    • Batteries, 12V (2), 93 amp-hour
    • Converter, 12V electrical
    • Electrical system, 24V, 15 amp
    • Led lighting system:
      – Backup and hazard lights
      – Directional signals, front and rear
      – Engine compartment lights
      – External payload lights
      – Headlights and fog lights
      – Lo-hi beam selector
      – Ladder light and service deck lights
      – Left-hand ladder/service deck
      – Stop/tail lights
    • Vehicle Information Management Systems (VIMS)
    • VIMS, blue light
    • Payload indicator lights
  • INFORMATION MANAGEMENT
    • Road Analysis Control (RAC)
  • CAB
    • Standard Cab
      – Deluxe operator seat
      – Basic companion seat
      – Payload indicator lamps
      – Retractable windshield visor
    • Air conditioner
    • Auxiliary power connection/cigarette lighter
    • Diagnostic connection port
    • Dome courtesy light
    • Entertainment radio ready
      – 5-amp converter, speakers, antenna, and wiring
    • Air cleaner service indicator
    • Gauge panel: Air pressure, Brake oil temperature, Engine coolant temperature,
    • Fuel level
    • Electric hour meter
    • Electric engine control fault indicator
    • Mirrors, right and left
    • Speedometer and Tachometer
    • Supplemental steering (automatic)
    • Traction control system
    • Transmission gear indicator
    • Vital Info Management System (VIMS)
    • VIMS message center w/universal gauge and keypad
    • Heater/defroster (11 070 kCal/43,930 BTU)
    • Horn
    • Hoist, body control (electric)
    • ROPS cab, insulated/sound suppressed
    • Seatbelt for operator, park brake safety; two-point seatbelt for trainer/passenger
    • Stairway and walkway access, 600 mm (24 in)
    • Steering wheel, tilt, padded, telescopic
    • Window, operator, electric powered
    • Windshield, wiper, intermittent control, and washer
    • Prohibit access handrail – rear cab
  • OBJECT DETECTION SYSTEM
    • Radar and camera
  • TECHNOLOGY PRODUCTS
    • Product link™ cellular
  • SAFETY AND SECURITY
    • Ground level VIMS data port
    • Ground level battery disconnect
  • FUEL SYSTEMS
    • Fast fill fuel system
    • 1893 L (500 gallon) capacity fuel tank and fast fill system
    • Fuel filter basic screen
  • FLUIDS
    • Antifreeze protection to –50º C (–58º F)
  • ACCESS
    • Fixed ladder
  • CHASSIS
    • Mirror heated
    • Driveline guard
  • SERVICE
    • Quick connect fitting for engine oil
    • Grease injector
    • Dual [LM2] [TS3] dryer for compressed air system
    • Auto lube
    • Auxiliary steering quick connect (towing)
    • Auxiliary “buddy” dump quick connect
  • BODIES AND ACCESSORIES
    • Rock ejectors

Optional Equipment

  • POWERTRAIN
    • Engine, 3512C, 1450 hp, U.S EPA Tier 2 equivalent
    • Pre-lube
    • Filtration with oil cooler
    • Oil renewal system
    • Muffler, extended exhaust
    • Exhaust system to heat body
    • Fan, variable speed, rockford for use in freezing weather operations
    • Electric start
  • ELECTRICAL
    • Payload digital display
  • CAB
    • Deluxe cab
      – Includes the standard cab features plus:
      – Premium plus operator seat
      – Deluxe companion seat
      – External payload digital display monitors
      – Cab cleanout vacuum
      – Operator footrest
  • OBJECT DETECTION SYSTEM
    • Radar and camera, alternate
    • Camera only (radar ready)
    • Camera, alternate
    • Omission, camera and radar
  • TECHNOLOGY PRODUCTS
    • Product link satellite
  • SAFETY AND SECURITY
    • Working at heights handrail
    • Working at heights package
    • Working at heights service
    • Fire extinguisher, portable
  • FUEL SYSTEMS
    • 2498 L (660 gallon) capacity fuel tank and fast fill system
  • RIMS AND WHEELS
    • Rims Mounting Group
    • 33R51 standard rim
    • 33R51 quick change rim
    • Rim diffuser
    • Hub odometer
    • Wheel chocks
    • Brake wear indicator
    • 33R51 standard rim
  • MUD GUARD
    • Mud guards for standard hydraulic and fuel tank
    • Mud guards for standard hydraulic and large fuel tank
  • ACCESS
    • Powered staircase
  • CHASSIS
    • Mirror wide and heated
  • COLD WEATHER
    • 240V engine coolant and oil heater
  • BODIES AND ACCESSORIES
    • HP Body
    • MSD II Body
    • Dual Slope Body
    • Gateless Coal Body
    • X Body
    • Side Extensions
    • Tail Wraparound
    • Liner for base only
    • Liner for entire body
    • Rock guard for dual slope body

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