Cat 789 (Tier 4 Final / Stage V)

Mining Trucks

About the Cat 789 (Tier 4 Final / Stage V)


What will it take to boost your bottom line? A truck with a tradition of proven performance in a wide variety of applications? A truck with the lowest cost per ton in its size class, for an overall reduction in your operating costs? The reliability and reduced costs that come with long life — from the engine and powertrain to the components, brakes and frame? With the Cat® 789, you get all of this — and more. The 789 offers the lowest cost per ton in its size class and high reliability — reducing overall costs and delivering a better bottom line to the most important mine in the world: yours.


Gross Power - SAE J1995 1566 kW
Engine Model Cat® 3516E
Net Power - SAE J1349 1473 kW
Rated Speed 1650 r/min
Emissions Rating U.S. Tier 4 / EU Stage V
Bore 170 mm
Stroke 215 mm
Displacement 78.1 l
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.
Weights - Approximate
Nominal Rated Payload 191 t
Rated Gross Machine Weight 324319 kg
Chassis Weight 106425 kg
Body Weight 27137 kg
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.
Weight Distributions - Approximate
Front Axle - Empty 50 %
Rear Axle - Empty 50 %
Front Axle - Loaded 33 %
Rear Axle - Loaded 67 %
Final Drives
Type Double reduction, planetary with full floating axles.
Differential Ratio 2.35:1
Planetary Ratio 10.83:1
Total Reduction Ratio 25.46:1
Forward - 1 12.6 km/h
Forward - 2 17.1 km/h
Forward - 3 23.1 km/h
Forward - 4 31.2 km/h
Forward - 5 42.3 km/h
Forward - 6 57.2 km/h
Reverse 11.8 km/h
Top Speed - Loaded 57.2 km/h
Standard Tires 37.00-R51
Optional Tires 40.00-R51
Rims 29" x 57"
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 81693 cm²
Rear - Wet Disc Brake Surface Area 134590 cm²
Standards Service and Secondary: ISO 3450:2011
Parking Brake Four-corner, Multi-disc, Spring Applied, Hydraulically Released
Capacity - Dual Slope - 100% Fill Factor
Struck 77 m³
Heaped (SAE 2:1) 108 m³
Body Hoists
Type Twin, two-stage hydraulic cylinders with snubbing valve.
Pump Flow - High Idle 403 l/min
Relief Valve Setting - Raise 18950 kPa
Body Raise Time - High Idle 14 s
Body Lower Time - Float 16 s
Type Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
Effective Cylinder Stroke - Front 104.65 mm
Effective Cylinder Stroke - Rear 93.22 mm
Rear axle - Oscillation ±5°
Service Refill Capacities
Fuel Tank - Standard 2060 l
Diesel Exhaust Fluid Tank 233 l
Cooling System 679 l
Crankcase 291 l
Final Drive - Each 22 l
Differential - Final Drives 610 l
Steering Tank 160 l
Steering System - Includes Tank 175 l
Brake/Hoist Tank 640 l
Brake Hoist System 1315 l
Brake Hoist System - Includes Tank 209 l
Air Conditioning HFC - 134A refrigerant: 31733 Btu/h
Heater / Defroster 36510 Btu/h
Note The operator sound pressure level, 76 dB(A), complies with ISO 6394:2008 and 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.
Steering Angle 36.07 °
Turning Diameter - Front 27.53 m
Steering Standards ISO 5010:2007
Dimensions (Approximate)
Height - Top of ROPS 5550 mm
Overall Body Length 12810 mm
Inside Body Length 8391 mm
Overall Length 12650 mm
Wheel Base 5700 mm
Rear Axle - Tail 3585 mm
Ground Clearance 1304 mm
Dump Clearance 1450 mm
Loading Height - Empty 5675 mm
Rear Sidewall Height 974 mm
Inside Body Depth - Maximum 2836 mm
Overall Height - Body Raised 13435 mm
Operating Width 7832 mm
Centerline Front Tire Width 5410 mm
Engine Guard Clearance 1290 mm
Overall Canopy Width 7645 mm
Outside Body Width 6865 mm
Inside Body Width 6500 mm
Front Canopy Height 6540 mm
Rear Axle - Clearance 1263 mm
Centerline of Rear Dual Tire Width 4695 mm
Overall Tire Width 7120 mm



From wide slip-resistant surfaces and guard rails to state-of-the-art collision avoidance technologies, the Cat 789 is infused with features to help operators feel safe and confident on the job. Retractable, seat/shoulder belts with three-point operator restraint, wide-angle mirrors, body raised indicator, body retaining cable, guard rails, reverse neutralizer when dumping, low interior sound level, secondary steering system, ground level access shutoff switches, four corner hydraulic brakes actuation, and a 34% bigger cab with visibility improvements.

Operator Work Area
Work Area View improves operator visibility to working environment around machine
— Integrated Object Detection System with Dedicated Dash Display

Anti Rollback
Uses physical grade and payload to determine the rimpull needed to keep the truck stationary. As a truck coasts to a stop up a grade, it will automatically catch the truck with the service brakes if the operator does not press the brake pedal.

Enhanced Traction Control
More Responsive Traction Control System: Reduces tire wear and Improves machine performance.


Most popular 191-tonne (210-ton) truck in the mining industry
— 80% of the industry
— Delivering results for decades
— Easy to operate and maintain

The 789 delivers a faster speed on grade than competitive trucks, reducing cycle times and lowering overall costs. — 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.
— And expanded tire options allow mines to take advantage of higher speeds, particularly in flat long-haul high-speed applications.

Like all Cat mechanical-drive trucks, the 789 features four-corner oil-cooled brakes and Automatic Retarding Control to improve handling and machine control so operators can work quickly and confidently.

Machine Utilization
Improved operator comfort and easier machine control means higher utilization of machine capabilities over the shift.


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.

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.


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.

We've designed the 789 with a number of enhancements that lessen its impact on the environment. 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.

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.

This 789 is EPA Tier 4 / EU Stage V compliant and powered by the 2,100 HP Cat 3516E engine. This quad turbocharged diesel engine delivers high power and reliability in the world's most demanding mining applications. The engine is a 16-cylinder, four-stroke design that uses long, effective power strokes for more complete fuel combustion and optimum efficiency.

Oil Renewal System
Optional oil renewal system extends engine oil change intervals from 500 hours to 4,000 hours or more to increase machine availability and reduce costs.

Fuel Efficiency
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.

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

Contradicting a common belief that bigger is better, the 789 has a weight advantage over larger trucks so you can haul more with every load.
— The 789 also delivers a 10-15% cost per ton advantage over competitive trucks, depending on application.

The 789 has been a dependable performer on mine sites for decades, delivering high availability, reliability and reduced costs that come with long life — from the engine and powertrain to the components, brakes and frame.
— Component life is further enhanced thanks to the standard rear-axle continuous filtration feature, which operates when the engine is running.
— Cleaner oil helps promote longer lubrication that leads to longer life.

double reduction final drives
Caterpillar final drives work as a system with the transmission for maximum power to the ground at the lowest cost.

Technology Solutions

Product Link Elite comes standard
Product LinkTMElite is Caterpillar's next generation on-board hardware that enables your assets to collect and transmit information into locally-hosted or cloud-hosted applications. Its easy-to-configure interface and customizable data-push frequency enable equipment management anywhere, anytime.

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.

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

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.

With the MineStar Detect proximity detection system, you can equip your 789 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

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.

A new lightweight design that provides durability along with a higher payload.

The HP body features robust top rail geometry with internal stiffeners and a high-visibility load placement indicator.
— Floating bolsters and spring plates improve overall durability by avoiding welds in high stress areas.
— In addition, the body requires only minimal liner coverage due to thicker and harder base plates.
— Curved front / side transitions minimize carryback.

For mature mines with good operational and maintenance practices, the lighter weight MSD II body is available in several sizes. It is a customer / site specific body that is designed to maximize performance.

The original standard body, the Dual Slope body provides excellent load retention, maintains a low center of gravity with optimum load distribution, reduces shock loading and is available in lined and unlined configurations.

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.


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.

Modular HVAC and modular radiator
We've worked to reduce key contributors to downtime with features like the new modular HVAC (heating, ventilation and air condition) system, which improves reliability and consolidates components so the entire system can be removed and replaced quickly.

Serviceability & Reliability

— Modular HVAC and modular radiator
— Cleaner Hydraulic & Electrical routings
— 100% Airless Electric Start Option
— Extended interval filters with ground access
— Fluid level sight glasses, grouped service pts
— New centralized service center option
— Integrated Detect System or Vision Camera
— LED Lighting
— Continuous Rear Axle Lube Filtration
— Powered Access Option
— Working at Heights Option

View product in 360°

Drag your mouse to rotate the product



Please contact us for requests or advise. 


  • Call
  • Arrow

Request a quotation



Email us

We will get in contact within 24 hours.

How would you like us to contact you? *