Off-Highway Trucks 785D ENGINEERED FOR PERFORMANCE, DESIGNED FOR COMFORT, BUILT TO LAST.

View Specs Tour

785D
Change model

785D

Change model

Find Dealer

Request A Quote

Overview

The 785D Mining Truck is engineered for performance, designed for comfort, and built to last. Developed specifically for high production mining and construction applications, the 785D Mining Truck keeps material moving at high volume to lower your cost-per-ton. Rugged construction creates a durable machine. Easy maintenance procedures ensure high reliability and  long life with low operating costs.

Features At A Glance

Performance

OPERATING EFFICIENCY

The Cat mechanical drive power train and power shift transmission provides unmatched operating efficiency and control on steep grades, in poor underfoot conditions, and on haul roads with high rolling resistance.

POWER TO THE GROUND

The Cat 6-speed planetary power shift transmission is matched with the direct-injection 3512C engine to deliver constant power over a wide range of operating speeds and is built tough for long life between overhauls.

SUPERIOR CONTROLLABILITY

Like all Cat mechanical-drive trucks, the 793F features four-corner oil-cooled brakes and Automatic Retarding Control to improve handling and machine control so operators can work quickly and confidently.

OVER 20% PRODUCTIVITY BOOST WITH ADDITION OF AUTONOMY

Fully integrated AHS factory offering:
— 240+ autonomous trucks in service
— Over 1.6 billion tonnes hauled
— Near continuous utilization

Integration

BUMPER-TO-BUMPER CATERPILLAR

The individual components, software, systems and engine that go inside a Cat truck have different purposes, but they have one very important thing in common: They are all manufactured by Caterpillar and supported by the Cat dealer network.

This integration ensures that the entire truck — from body to bumper, engine to electronics — can be fully optimized to deliver the lowest cost per ton.

YOUR PARTNER FOR THE COMPLETE EQUIPMENT LIFECYCLE

No one knows more about how to get the most from a piece of Cat equipment than your local Cat dealer. This one-of-a-kind, on-the-ground support network delivers expert service, integrated solutions, after-sales support, fast and efficient parts fulfilment, world-class rebuild and remanufacturing capabilities, and more.

Cat dealers operate as nearly 200 local businesses — each one fully embedded in and committed to the geographic area it serves. That means you work with people you know, who know your business, and who respond on your timeframe.

Sustainability

MINING — FOR A — BETTER WORLD

Governments and regulatory agencies mandate that you establish and follow environmentally sound policies and practices as you meet the demand for mined materials. We’re focused on doing our part to make sure our trucks help you meet those regulations.

REDUCING EMISSIONS

We've designed our trucks to use less fuel, which reduces engine emissions and carbon footprint, and there is zero fuel burn during retarding.
—The optional Tier 4 Final engine reduces NOx and particulate matter. Rear axle filtration, extended life filters and extended maintenance intervals decrease the amount of waste contributed to the environment.

We also continue to research alternative energy sources such as biofuels (B20) and a liquefied natural gas-supplied Dynamic Gas Blending solutions to find new ways to reduce emissions. In addition, we preserve raw materials, conserve energy and reduce emissions through the Cat Reman program, which returns end-of-life components to like-new condition.

DESIGNED FOR SUSTAINABLE OPERATIONS

The 785D Mining Truck offers oil renewal systems, continuous rear axle filtration, extended life filters and extended maintenance intervals which aid in decreasing the amount of waste contributed to our 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.
— Advanced Surface Technology (AST) is a replacement for hard chrome coatings on some steel parts, including suspension and hoist cylinder rods. This technology improves wear resistance and reduces repair time. Chrome has been eliminated to reduce environmental impact.

BUILT TO BE REBUILT

Cat trucks are designed to last over 100,000 hours, and many are going well beyond that. The frame, powertrain, engine and components are built to be rebuilt — using new, remanufactured or rebuilt parts and components — so you can take advantage of multiple lives of like-new performance at a fraction-of-new price.

Operating Cost

OPTIMIZED PAYLOAD

The Caterpillar designed machine monitoring system provides critical machine health and payload information to the operator and service personnel. Max Payload Speed Manager is a feature that aids in managing the Caterpillar 10/10/20 Overload Policy.

Based on target payload weight and overload settings, the VIMS system logs and warns the operator when the truck reaches overload after second gear reweigh. The truck will be limited to second gear at 1,750 rpm, and the automatic retarder speed setting is reduced to 1,750 rpm until the load is dumped.

MORE POWER TO GROUND

Lock-Up Torque Converter Combines maximum rimpull and cushioned shifting of torque converter drive with the efficiency and performance of direct drive — engages at approximately 8 km/h (5 mph), delivering more power to the wheels.

OPTIMUM POWER

Transmission Chassis Control (TCC) TCC uses electronically transferred engine rpm data to execute shifts at preset points for optimum performance, efficiency and clutch life.

Technology Solutions

Cat® MineStar™ Solutions

Whether you want to address a single challenge or make step changes in the overall safety, efficiency and productivity of your surface operation, Cat® MineStar™ has a solution for you. MineStar is the mining industry's most comprehensive and thoroughly integrated suite of technology offerings.

FLEET

Cat Fleet helps you identify opportunities to improve truck efficiency in ways that reduce costs, boost productivity and add real value to your bottom line.
— Eliminate Queuing
— Optimize Shift Changes
— Reduce Fuel Stops

COMMAND FOR HAULING

This autonomous hauling solution helps improve productivity, efficiency and profitability while reducing overall costs.

What if your trucks could respond to calls to the shovel, move into position, haul to dump points and even report for maintenance — all without an operator on board? That's what Cat Command for hauling enables.

But this autonomous Cat MineStar solution is more than just an operator-free system. It takes advantage of the most sophisticated technologies available to deliver a next-generation haulage solution — one that boosts safety, productivity and availability on busy mine sites, especially those in difficult or remote locations. With autonomous hauling, the future is here — and we're there to help you bring it to your operation.

DETECT

With the MineStar Detect proximity detection system, you can equip your 785D with cameras to give your operators a better view of what's happening around their equipment — or combine cameras and radar into a true object detection system that automatically alerts operators to hazards.

You can even add satellite capabilities to provide proximity warnings and avoidance zones, seat-belt monitoring that encourages operators to buckle up, and in-cab systems that intervene when they detect fatigue or distraction.

Road Analysis Control (RAC)

Optional system monitors haul road conditions by measuring frame rack and pitch to improve haul road maintenance, cycle times, tire life and fuel efficiency.

Truck Body Systems

GET THE RIGHT BODY FOR THE JOB

When it comes to truck bodies, one size does not fit all. And when it comes to your Cat truck, Cat bodies are the best choice. We follow a dynamic approach to engineering — treating the body as part of a system rather than a static structure. Cat bodies are designed to be an integral part of the entire vehicle system, ensuring you achieve maximum chassis life.
— They're sized to meet payload requirements without compromise to vehicle balance, braking or control.
— From the design to the materials, manufacturing to shipping, the entire process meets Cat standards of quality and control.
— The Caterpillar exclusive 10/10/20 payload guidelines help achieve a balance of excellent payload with safe operation.

1 - X Body

The X body is a heavy duty body configured with a variety of liner options to meet site specific requirements of a mine. Like the Dual Slope - the X body is designed for durability across a range of harsh applications.

2 - MSD II

The MSD II bodies are intended for established mines and are customized to suit your specific mining applications based on a mine site evaluation.
—The MSD II is the best lightweight body ever built for mining applications and achieves excellent payload performance.

3 - Gateless Coal Body

The Gateless Coal Body is intended for dedicated coal haulage applications. It can be loaded to achieve target payload across the full range of coal densities.
— The body is designed and built using the MSD II Body concept, ensuring superior durability and reliability.

4 - Dual Slope Body

The original standard body, the Dual Slope body, provides excellent load retention, maintains alow center_of gravity with optimum load distribution, reduces shock loading and is available in lined and unlined configurations. The Dual Slope body is intended for tough applications including greenfield sites and contracting mines.

CUSTOM BODY OPTIONS

A variety of options including tail extensions, sideboards, tumble bars, rock boxes and rock shedders are available to maintain rated payload, reduce spillage and improve hauling efficiencies.

Serviceability

SERVICING EASE

— Easy access to daily service points simplifies servicing and reduces time spent on regular maintenance procedures. Enhanced serviceability and 500-hour service intervals are designed to increase machine availability and productivity.
— Maintenance Platform provides access to engine, air filters, steering hydraulic tank and battery compartment.
— In-Frame Access permits easy access to major components for easy servicing and removal.
— Ground-Level Access allows convenient servicing to tanks, filters, drains, and engine shutdown.
— Autolube: Automatic lubrication system reduces maintenance time by automatically lubricating necessary components on a regular basis.
— FastFill Service Center: optional service center reduces daily maintenance times with clustered fast fill connections for steering oil, transmission oil, engine oil and coolant.
— Pressure Test Points and S•O•S℠ Ports
— Sealed Electrical Connectors: Electrical connectors are sealed to lock out dust and moisture. Harnesses are braided for protection.
— Fast Fill Fuel provides a receiver at the fuel tank
— Easy-to-change Air Filters

Full Specifications Standard Equipment Optional Equipment

Product Specifications for 785D

Download Print

US
Metric

Engine

Engine Model	Cat® 3512C HD Cat® 3512C HD
Gross Power - SAE J1995	1450 HP 1082 kW
Net Power - SAE J1349	1348 HP 1005 kW
Bore	6.7 in 170 mm
Stroke	8.4 in 215 mm
Displacement	3573.6 in³ 58.56 l

Weights - Approximate

Nominal Rated Payload	154 ton (US) 140 t
Rated Gross Machine Weight	550000 lb 249476 kg
Body Weight Range	20 831 - 30 623 kg 45,924 - 67,512 lb 20 831 - 30 623 kg 45,924 - 67,512 lb
Chassis Weight	183270 lb 83130 kg

Transmission

Forward - 1	7.5 mile/h 12.1 km/h
Forward - 2	10.2 mile/h 16.3 km/h
Forward - 3	13.8 mile/h 22.2 km/h
Forward - 4	18.6 mile/h 29.9 km/h
Forward - 5	25.2 mile/h 40.6 km/h
Forward - 6	34 mile/h 54.8 km/h
Reverse	6.8 mile/h 11 km/h
Top Speed - Loaded	34 mile/h 54.8 km/h

Final Drives

Differential Ratio	2.10:1 2.10:1
Planetary Ratio	10.83:1 10.83:1
Total Reduction Ratio	22.75:1 22.75:1

Suspension

Effective Cylinder Stroke - Front	12.1 in 306.5 mm
Effective Cylinder Stroke - Rear	6.5 in 165 mm

Brakes

Brake Surface - Front	9497 in² 61270 cm²
Brake Surface - Rear	13908 in² 89729 cm²
Standards	SAE J1473 OCT90 ISO 3450-1985 SAE J1473 OCT90 ISO 3450-1985

Body Hoists

Pump Flow - High Idle	198 gal/min 750 l/min
Relief Valve Setting - Raise	2500 psi 17238 kPa
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

Body - Dual Slope

Body Weight	49150 lb 22295 kg
Heaped (SAE 2:1)	102 yd³ 78 m³

Body - X

Body Weight	55468 lb 25160 kg
Heaped (SAE 2:1)	111 yd³ 85 m³

Steering

Turning Diameter - Front	97.7 ft 29.8 m
Steer Angle	36 ° 36 °
Steering Standards	SAE J1511 OCT90 ISO 5010:1992 SAE J1511 OCT90 ISO 5010:1992

Weight Distributions - Approximate

Front Axle - Empty*	45-46% 45-46%
Rear Axle - Empty*	54-55% 54-55%
Front Axle - Loaded - Target	33 % 33 %
Rear Axle - Loaded - Target	67 % 67 %
Rear Axle - Loaded	Depends on body configuration. Depends on body configuration.
Rear Axle - Empty	Depends on body configuration. Depends on body configuration.
Note	Weight distributions optimized with Cat body. Weight distributions optimized with Cat body.

Service Refill Capacities

Fuel Tank - Standard	500 gal (US) 1893 l
Cooling System	100 gal (US) 379 l
Crankcase	54 gal (US) 204 l
Differential - Final Drives	115 gal (US) 436 l
Steering Tank	24 gal (US) 90 l
Steering System - Including Tank	31 gal (US) 117 l
Brake/Hoist Hydraulic Tank	89 gal (US) 337 l
Brake Hoist System - Includes Tank	169 gal (US) 641 l
Torque Converter/Transmission System - Including Sump	65.51 gal (US) 248 l

ROPS

ROPS Standards

SAE J1040 APR88 ISO 3471:1994 SAE J1040 APR88 ISO 3471:1994

Sound

Sound Standards

ANSI/SAE J1166 MAY90 SAE J88 APR95 ANSI/SAE J1166 MAY90 SAE J88 APR95

Tires

Standard Tires

33.00-R51 (E3 & E4) 33.00-R51 (E3 & E4)

785D Standard Equipment

Print

ELECTRICAL

Alarm, Back-up

Alternator (105 A)

Batteries, 93Ah, Low-maintenance, 12V (2)

Converter, 12V electrical

Electrical System, 24V, 15A

Lighting System

OPERATOR ENVIRONMENT

Air Conditioner

Ashtray/cigarette lighter

Coat hook

Diagnostic connection port

Dome courtesy light

Entertainment radio ready

Gauges/Indicators

Heater/defroster

Horn

Hoist body control, electric

Integrated Object Detection System

ROPS cab insulated/sound suppressed

Storage compartment

Seatbelt, 75 mm (3 in), retractable

Steering wheel, tilt, padded, telescopic

Sun visor

Tinted glass

Window, electric powered, operator

Windshield wiper, intermittent control and washer

POWER TRAIN

Cat 3512C HD-EUI diesel engine

Braking System

Transmission

OTHER STANDARD EQUIPMENT

Air Line Dryer (2)

Body Mounting Group

Auto lubrication system (Lincoln)

Dumping, Auxiliary Quick Connect for “Buddy Dumping”

Steering, Auxiliary Quick Connect for Towing

Continuous rear axle filtration

Diagonal stairway, 600 mm (24 in)

Driveline Operator Safety Guard

Fast-fill Fuel System

VIMS Dataport

Battery Disconnect

High speed crankcase oil change

Reservoirs (Separate)

S•O•S℠ sample ports

Supplemental steering (automatic)

Tie Down Eyes

Tow Hooks, Front

Traction Control System

Vandalism Protection Locks

Vital Information Management System (VIMS) includes: VIMSpayload monitor, MAX payload and speed manager

785D Optional Equipment

Print

BODIES

Body, X

MSD II (Mine Specific Design)

Dual Slope

Custom Body Options

BODY EXTENSIONS

Tail

Wrap around

LINERS

Full-length liner

Tail extension wrap-around

OPERATOR ENVIRONMENT

Footrest, operator

Hose, cab clean-out

Vacuum, cab clean-out

POWER TRAIN

Pre-lube, engine

Oil renewal system

Oil cooler, rear axle

COLD WEATHER

Starting, Cold Weather

TIRES AND RIMS

Spare rims

INFORMATION MANAGEMENT

Control, Road Analysis (RAC)

SERVICE CENTER

Service Center, Wiggins

MISCELLANEOUS

Fire extinguisher, portable

Hub Odometer, Kilometers

Hub Odometer, Miles

Wheel Chocks

Heater, Diesel fuel

See how 785D compares against frequently compared products.

US
Metric

Off-Highway Trucks 785D

785D

Nominal Rated Payload: 154 ton (US); 140 t
Engine Model: Cat® 3512C HD; Cat® 3512C HD
Gross Power - SAE J1995: 1450 HP; 1082 kW

Selected Model

Off-Highway Trucks 789D

789D

Nominal Rated Payload: 210 ton (US); 191 t
Engine Model: Cat® 3516C HD; Cat® 3516C HD
Gross Power - SAE J1995: 2100 HP; 1566 kW

Model Details

Off-Highway Trucks 793D

793D

Nominal Rated Payload: 256 ton (US); 232 t
Engine Model: Cat® 3516B HD; Cat® 3516B HD
Gross Power - SAE J1995: 2415 HP; 1801 kW

Model Details

Compare with competitive products

Tools And Expert Help At Every Turn

Payment Calculator

Current Offers

Rental Options

Used Options

Find Dealer

Product Brochures and More Are Ready to Download!

Full specifications, product brochures and more. Sign up below for additional information. Or for instant access, you can skip this form.

First Name

Last Name

Email

Business Phone

Company

Company Address

City

Zip/Postal Code

Country

Level of interest

Yes I'd like to receive future marketing (e.g. new product information, promotions) communications (e.g. email, text and phone) from Caterpillar Inc., its affiliates and subsidiaries worldwide and the Caterpillar dealer network. Regardless of whether you decide to receive these marketing communications, Caterpillar will continue to send service/transactional messages, including those that have to do with any accounts that you may have with us. No I would not like to receive future marketing communications.

Website Privacy Statement Download without providing email

Media Gallery

Photos

Videos

360 View

All

Take the interactive virtual product tour to explore the great features and benefits of the 785D

Start 785D Tour

Internet Explorer users may experience issues with certain features of our site.
Please try a current version of an alternate browser (i.e. Google Chrome, Microsoft Edge, Mozilla Firefox) for the full Cat.com experience.