Cat 797F

Mining Trucks

About the Cat 797F


What will it take to boost your bottom line? Greater productivity thanks to a best-in-class payload? Superior braking that leads to confident, productive operators? Or a tough, rugged frame that delivers performance and long life no matter the conditions? With the Cat® 797F, you get all of this — and more. Today’s 797F is the most productive 363-tonne (400-ton) truck in the market. It’s fast, fuel efficient and delivers class-leading productivity, making it the industry benchmark for lower cost per ton in its size class. It hauls more every load, every cycle and every shift. And it delivers a better bottom line to the most important mine in the world: yours.


Gross Power - SAE J1995 2983 kW
Engine Model Cat® C175-20
Net Power - SAE J1349 2828 kW
Rated Speed 1750 r/min
Emissions U.S. EPA Compliant. Where applicable, the Cat C175-20 engine is compliant with U.S. EPA emission standards.Tier 4 engine option available to meet Tier 4 Final emission standards.
Bore 175 mm
Stroke 220 mm
Displacement 106 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.
Note (2) U.S. EPA Tier 4 Final available for applicable markets.
Note (3) High Altitude Low Maintenance Ratio Engine Configuration (4x4) option available.
Weights - Approximate
Nominal Rated Payload 364 t
Rated Gross Machine Weight 623690 kg
Chassis Weight 215217 kg
Body Weight 43000 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.
Note (4) Tier 4 Chassis Weight: 486263 lb (220565 kg)
Weight Distributions - Approximate
Front Axle - Empty 47.2%
Rear Axle - Empty 52.8%
Front Axle - Loaded 33.3%
Rear Axle - Loaded 66.7%
Note Weight distributions optimized with Cat body.
Final Drives
Type Double reduction, planetary with full floating axles.
Differential Ratio 1.276:1
Planetary Ratio 16.67:1
Total Reduction Ratio 21.26:1
Note Double reduction, planetary with full floating axles.
Forward - 1 10.7 km/h
Forward - 2 14.4 km/h
Forward - 3 19.3 km/h
Forward - 4 26.1 km/h
Forward - 5 35 km/h
Forward - 6 47.3 km/h
Forward - 7 63.6 km/h
Reverse 11.9 km/h
Top Speed - Loaded 63.6 km/h
Tires 59/80 R63
Rims 44" x 63"
Note Quick Change Rims optional.
Note (1) Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.
Braking System
Service Brakes Service Brakes: Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area 132259 cm²
Rear - Wet Disc Brake Surface Area 198388 cm²
Standards Service and Secondary: ISO 3450:2011
Parking Brake Four-corner, Multi-disc, Spring Applied, Hydraulically Released
Load Brake Rear service brakes
Note Anti-Lock Brake System (ABS) optional with CMD package
Capacity - HP Body - 100% Fill Factor
Struck 225 yd³ / 172 m³
Heaped (SAE 2:1)* 330 yd³ / 252 m³
Note (1) Consult your local Cat dealer for body recommendations.
Body Hoists
Type Twin, two-stage hydraulic cylinders with snubbing valve.
Pump Flow - High Idle 1140 l/min
Relief Valve Setting - Raise 24200 kPa
Body Raise Time - High Idle 25 s
Body Lower Time - Float 18 s
Body Power Down- High Idle 18 s
Type Self-contained nitrogen/oil cylinders, rear strut pin-to-pin mounting, top & bottom double shear clevis attachments
Effective Cylinder Stroke - Front 99.1 mm
Effective Cylinder Stroke - Rear 93.2 mm
Rear axle - Oscillation ±3.96 degrees
Service Refill Capacities
Fuel Tank 3785 l
Fuel Tank (Tier 4) 4542 l
Diesel Exhaust Fluid Tank 375 l
Cooling System 1160 l
Crankcase 390 l
Front Wheels - Each 61 l
Differentials 1250 l
Steering Tank 254 l
Steering System - Including Tank 360 l
Brake/Hoist Tank 770 l
Brake Hoist System - Includes Tank 1850 l
Torque Converter Sump 303 l
Torque Converter/Transmission System - Including Sump 629 l
Note (1) DEF Tank only available for EPA Tier 4 engine option.
Air Conditioning HFC - 134A refrigerant: 24,300 Btu/h
Heater / Defroster 38900 Btu/h
Note Ambient capabilities down to -30C (-22F) for heater/defroster and up to 50C (122F) for air conditioning.
ROPS Standards (1) The operator sound pressure level, 76 dB(A), complies with ISO 6394:2008 and ISO 6396:2008.
ROPS Standards (2) ROPS (Rollover Protective Structure) meets ISO 3471:2008 criteria.
FOPS Standards FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II criteria.
Steering Angle 40 °
Turning Diameter - Front 37.4 m
Steering Standards ISO 5010:2007
Note Turning Diameter (ISO 7457:2009)
Rear Axle - Clearance - Loaded 947 mm
Inside Body Depth - Maximum 3363 mm
Overall Height - Body Raised 15701 mm
Loaded Ground Clearance 786 mm
Loading Height - Empty 6998 mm
Engine Guard Clearance - Loaded 1025 mm
Height - Top of ROPS - Empty 6526 mm
Front Canopy Height - Empty 7709 mm
Overall Body Length 14802 mm
Inside Body Length 9976 mm
Overall Length 15080 mm
Wheel Base 7195 mm
Rear Axle - Tail 3944 mm
Dump Clearance 2017 mm
Centerline Front Tire Width 6534 mm
Overall Canopy Width 9116 mm
Outside Body Width 9755 mm
Inside Body Width 8513 mm
Centerline of Rear Dual Tire Width 6233 mm
Overall Tire Width 9529 mm



From slip-resistant surfaces and guard rails to state-of-the-art collision avoidance technologies, the Cat 797F is infused with features to help operators feel safe and confident on the job.

Access and Egress
Improvements for machine level access and egress include a standard 600 mm (24 in) diagonal stairway across the front of the machine. Improvements for ground level access include an optional powered access stairway.

Isolation Box
Lockout, tagout box mounted on front bumper includes engine shutdown switch, battery lockout, starter lockout and transmission lockout.

Cat Detect System
Knowing what's around your 797F at all times is important. The Cat Detect system is factory installed as standard equipment on 797F Mining Trucks. The full Cat Detect system, RADAR AND CAMERA, provides both audible and visual indications of detected objects.

This system uses a combination of short and medium range radars which surround the machine, along with cameras on each side to allow the operator to confirm the detected object.

The cameras supplement the radar alerts and are selectable by touch screen menus through an intuitive interface.

Other Safety Features
— Slip resistant surfaces
— 76 mm (3 in) wide orange, three-point operator restraint
— Wide angle mirrors
— Body raised indicator
— Body retaining cables
— Guard rails
— Reverse neutralizer when dumping
— Low interior sound level


Superior mechanical power density delivers high efficiency at the lowest system weight and cost.

The Cat seven-speed planetary power shift transmission varies gear ratios to optimize powertrain efficiency to the application, delivering constant power over a wide range of operating speeds.

The lock-up torque converter delivers low-speed movement control and unsurpassed stall torque while still allowing for efficient direct drive haulage. Cat final drives work as a system with the planetary power shift transmission to deliver maximum power to the ground.

The 797F delivers optimal speed on steep grades, poor underfoot conditions and haul roads with high rolling resistance for faster cycle times when compared to competitive trucks. Its C175-20 diesel engine's 20-cylinder, four-stroke design uses long, effective power strokes for optimum efficiency.
—The 23% net torque rise provides unequaled lugging force during acceleration. The 797F travels loaded at a top speed of 60 km/h (42 mph).

Like all Cat mechanical-drive trucks, the 797F features four-corner oil-cooled brakes and Automatic Retarding Control to improve handling and machine control so operators can work quickly and confidently.


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 797F 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.

The Cat 797F is available in a fuel-efficient configuration that meets U.S. EPA Tier 4 Final emissions standards. Through over 150,000 hours of successful operation on Cat large mining trucks, the system has proven its ability to deliver with no impact on machine performance.

Designed for easy serviceability with readily accessible components, the modular aftertreatment system reduces overall fluid and fuel consumption and is aligned with truck preventive maintenance intervals to maintain high availability. Lower fuel burn results in longer engine life and lower repair costs.

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

— Over 130,000 hours in Canadian Oil Sands
​​​​​​​— Major drive train component life improvement
​​​​​​​— Over 80% of frame is cast, not fabricated
​​​​​​​— 5% tire life improvement
​​​​​​​​​​​​​​— Significant engine life increase

Aside from paying operators, fuel is often the biggest operating expense for a mining truck. That's why we've worked to make the 797F one of the most fuel-efficient trucks in the industry. We've completed multiple projects in search of new ways to reduce fuel consumption in a variety of applications such as flat hauls, high-altitude deep pits and oil sands. And we've seen improvements from 3% to 10%.

Multiple power settings allow you to operate at full power or in economy mode, so you can decide how much power you need. By flipping a switch, these modes fine-tune hydraulic and engine output to match the job at hand. Eco-mode has been shown to deliver fuel savings of up to 3.5% per cycle.

The 797F features a robust frame that allows for maximum payloads so you can haul more with every load. In higher altitudes, you'll enjoy a cost per ton advantage over competitive models, ranging from 6% to as high as 14%. And when you choose the HP Body option, you'll reduce weight an additional 2.0-5.0 tonnes (2.2-5.5 tons).

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.

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 797F 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.

Cat Truck Bodies
You have a choice of four MSD II (Mine Specific Design) bodies in conjunction with a configurable liner system to achieve the most efficient hauling solutions at the lowest-cost-per-unit-of-production.

Body Selection
The Cat truck body program is committed to providing you the most efficient and highest value body solution for your operation. By studying your mine site and understanding the overall operational requirements and constraints, the body can be configured to meet the unique needs of your application.

The MSD II bodies are the number one choice in the mining industry. The internal body shells are designed and manufactured for superior impact and wear protection. Coupled with the Caterpillar mine specific design process the MSD II bodies optimize the balance of payload and durability.

Truck Body Liners
A variety of liner options are available to save weight and extend body life through impact and wear management. The mine specific design system is utilized to provide you with the optimum liner for long life at your mine site.


— Grouped ground level maintenance and checkpoints
— Oil level sight gauges and front wheel sight glass
— Electronic Clutch Pressure Controls (ECPC) diagnostics
— Service platforms on the engine and transmission
— Optional electric start, which removes air system
​​​​​​​​​​​​​​— Optional fast fill service center and brake wear indicators

Enhanced Engine Oil Filtration System (SCF/COF)
— Reduced risk of contamination
— Extend oil change intervals & reduce oil waste
— Eliminate cartridge filter changes

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