798 AC mining truck

798 AC Mining Truck

Overview

The 798 AC has a high performance engine, focuses on safety, has enhanced serviceability, has a reliable AC electric drive system, has a comfortable cab, and has truck body options designed and built to provide optimal performance and reliability.

Safety
Safety-infused Wide access stairways, service platforms for the engine, traction alternator and control cabinet, four corner wet disc brakes, and industry leading retarding.

Radial retard grid for improved right-hand view — make the lines darker so you can see where they are pointing.

— W...
Performance
PROVEN AND WORKING AROUND THE WORLD — Frame design: 18M+ hours
— C175 engine: 22M+ hours
— Field validation: 46,000+ hours
— Highest-hour 798 AC: 15,000+ hours
— Electric-drive system: 5M+ hours

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 ...
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.

Operating Cost
OPTIMIZED PAYLOAD The 798 AC delivers a true 372-tonne (410-ton) payload. Thanks to an efficient design, the class-leading payload is achieved regardless of local attachments.

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.
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 e...
Serviceability
SUPERIOR SERVICEABILITY — Engine walkways
— Service platforms
— Modular components
— Ground-level, grouped service points

Safety
Safety-infused Wide access stairways, service platforms for the engine, traction alternator and control cabinet, four corner wet disc brakes, and industry leading retarding.

Radial retard grid for improved right-hand view — make the lines darker so you can see where they are pointing.

— Wide field of view for greater visibility
— Integrated ROPS and FOPS
— Traction control
— Stored engergy dissipation at shutdown
— Anti-rollback
— Reverse shift inhibitor
— Door sensor warning for park brake application
— Optional powered access stair attachment
— Optional Cat MineStar™ Detect proximity awareness

Performance
PROVEN AND WORKING AROUND THE WORLD — Frame design: 18M+ hours
— C175 engine: 22M+ hours
— Field validation: 46,000+ hours
— Highest-hour 798 AC: 15,000+ hours
— Electric-drive system: 5M+ hours

HAULS MORE, HAULS FASTER — Efficient design delivers higher payload
— Optimized drive system integration puts more power to the ground

SUPERIOR CONTROLLABILITY Boosts operator confidence:
— Strong dynamic retarding
— Robust design empowers operator to use oil-cooled brakes regardless of speed or payload
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.

ONLY SINGLE-SOURCE ELECTRIC DRIVE TRUCK IN ITS SIZE CLASS The Cat engine, AC drive system, hydraulics and controls have been integrated to make the 798 easy to operate, providing excellent slow speed control within the service areas and superior throttle response on acceleration to move out of the loading or dump areas. Integration of the engine and powertrain delivers low operating costs through electronically combined powertrain components.
— 100% designed, validated and built by Caterpillar
— Full support of Cat dealer and parts network

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 the 798 AC to use less fuel, which reduces engine emissions and carbon footprint. The optional U.S. EPA Tier 4 / EU Stage V engine reduces NOx and particulate matter. And we've reduced oil usage and filter change intervals.

We also continue to research alternative energy sources such as biofuels (B20) and a liquefied natural gas-supplied Dynamic Gas Blending solutions, electrification and trolley 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.

EFFICIENCY The Cat AC drive is a high voltage system (2,600 volts) that operates at lower current than most competitive trucks. When combined with Cat's total integration and design of the truck and drive system, the result is higher efficiency, lower heat generation, smaller and lighter components, and longer component life.
—The Enhanced Engine Oil Filtration (EEOF) package, eliminates the need for an engine oil filter change and reduces oil usages.

Engines with Advanced Technology Engines with advanced technology contribute to better fuel economy and decreased emissions.

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 798 AC delivers a true 372-tonne (410-ton) payload. Thanks to an efficient design, the class-leading payload is achieved regardless of local attachments.

EFFICIENT HAULING The 798 AC is the most efficient electric-drive truck in its size class. It moves more tonnes per liter (tons per gallon) and hauls more material faster — so you can move more over the course of a shift, or haul the same amount of material with fewer trucks.
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 798 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.

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.

Integrated Body and Chassis Design Integral to the truck the body is designed to fit with the chassis and work as part of the truck system. Each body is sized to meet the payload requirements without compromise to vehicle balance, braking or control.

High Efficiency (HE) Body The body is sized and configured to meet the specific needs dictated by fragmentation, abrasion, cohesion, and the loading tool to maximize the payload capability of the truck.
  • Curved floor, front, and canopy strengthens entire body as a structure.
  • Strength of base plates allows minimal wear package and low operating weight.
  • Joint isolation system reinforces welded areas and exploits high strength main plates.
  • Runners transfer weight to the truck frame.
Serviceability
SUPERIOR SERVICEABILITY — Engine walkways
— Service platforms
— Modular components
— Ground-level, grouped service points

EASIER MAINTENANCE, LESS OFTEN — First overhaul life of 25,000 hours drives lower cost of ownership
— Separate drive motors and final drives enables service on individual components
— Engine and generator can be removed or installed separately, and dual-bearing generator design eliminates shimming
— Sealed and pressurized inverter cabinet requires no cleaning, which eliminates hundreds of hours of maintenance
— Long life radial grid with serviceable elements and AC motor control

Engine

Engine Model
Cat® C175-16
Gross Power - SAE J1995
3500HP
Standard Gross Power - SAE J1995
3500HP
Optional Gross Power - SAE J1995
3100HP
Rated Speed
1800r/min
Net Power - SAE J1349
3405HP
Emissions Rating
Fuel Optimized
Stroke
8.7in
Displacement
5187in³
Bore
6.9in
Note (1)
Contact factory for high altitude configuration.

Weights - Approximate

Rated Gross Machine Weight
1375000lb
Chassis Weight
450047lb
Body Weight Range
39 043 – 47 873 kg (86,075 – 105,542 lb)
Note (1)
Consult your tire manufacturer for maximum tire load.
Note (2)
Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.
Note (3)
Body weight varies depending on how body is equipped.
Nominal Rated Payload
410ton (US)

Operating Specifications

Top Speed - Loaded
40mile/h
Steer Angle
39°
Minimum Turning Radius
53ft
Note (1)
Payload assumes no debris, no extra options or attachments.
Note (2)
Refer to the Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.

Final Drives

Total Reduction Ratio
35:1

AC Drive System

Generator/Alternator
Brushless, engine mounted, dual bearing
Controls
IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Wheel Motor
Cat AC induction, rear axle mounted
Cooling System
Variable speed, hydraulically driven cooling system

Tires

Standard Tires
59/80 R63.
Note (1)
Production capabilities of the 798 AC truck are such that, under certain job conditions, TKPH (TMPH) capabilities could be exceeded and, therefore, limit production.
Note (2)
Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection.

Braking System

Front Wet Disc Brake Surface Area
20378in²
Rear - Wet Disc Brake Surface Area
30750in²
Standards
ISO 3450:2011
Electric Retarding
Radial Grid Design
Dynamic Retarding Power - Continuous
5480HP

Weight Distributions - Approximate

Front Axle - Empty
47%
Rear Axle - Empty
53%
Front Axle - Loaded
33%
Rear Axle - Loaded
67%

Capacity - HE Body - 100% fill factor

Struck
126.4-187.2 m³ (165-245 yd³)
Heaped (SAE 2:1)
215.4-266 m³ (282-348 yd³)
Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate
1in
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate
0.5in
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate
0.38in
Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate
0.2in
Note
Contact your local Cat dealer for body recommendations.

Service Refill Capacities

Cooling System
211gal (US)
Crankcase
82gal (US)
Final Drive - Each
67gal (US)
Hydraulic Tank
296gal (US)
Hydraulic System - Including Tank
385gal (US)
Fuel Tank
1300gal (US)

ROPS

ROPS Standards
ROPS (Rollover Protective Structure) cab offered by Caterpillar 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 FOPS criteria for Trainer.

Sound

Sound Standards (1)
The operator sound pressure level measured according to work cycle procedures specified in ISO 6394:2008 and ISO 6396:2008 is 75 dB(A) for cab offered by Caterpillar when properly installed, maintained, and tested with doors and windows closed.
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.

Steering

Steering Standards
ISO 5010:2007
Note
Rated Gross Machine Weight is 623 690 kg (1,375,000 lb).

Dimensions (Approximate)

Height - Top of ROPS
22.12ft
Overall Length
51.59ft
Wheel Base
21.84ft
Rear Axle - Tail
16.13ft
Ground Clearance
3.37ft
Dump Clearance
5.94ft
Loading Height - Empty
25.75ft
Overall Height - Body Raised
49.25ft
Centerline Front Tire Width
23.04ft
Front Axle Clearance
3.37ft
Canopy Width (without optional rock deflectors)
31.62ft
Outside Body Width
31.62ft
Inside Body Width
30.05ft
Front Canopy Height
26ft
Rear Axle - Clearance
3.59ft
Centerline of Rear Dual Tire Width
19.5ft
Overall Tire Width
30.32ft

Standard/Optional Features

Standard Equipment:

  • Power Train
    • C175-16 Diesel Engine
      – Turbocharging (4)/aftercooled
      – Air to air after cooler (ATAAC)
      – Air cleaner (4) with precleaner
      – Multi-point oil pressure sensing
      – Pre-lubrication/engine
    • Braking system:
      – Brake release towing
      – Oil-cooled, multi-disc (front and rear) (service, retarding, parking, secondary)
      – Automatic Retarder Control
      – Electric dynamic retarding with blended low speed
      – Extended life brake disc material
    • Cat AC drive train:
      – IGBT controlled AC induction motors
      – AC generator
      – AC cooled radial grid
    • Body-up reverse neutralizer
    • Programmable top speed
    • Rear axle continuous lube/filtration
    • Rear axle oil cooler
    • Reverse shift inhibitor
    • Directional shift management
    • Standard accumulator – Australian and Canadian certified
    • Neutral coast inhibitor
    • Body-up shift inhibitor
    • Neutral start inhibitor
  • Electrical
    • Alarm, backup
    • Brushless alternator 225 amp charging
    • Batteries – 12V (8) 90 amp hour
    • Converter, 12V electrical
    • Electrical system, 24V, 10, 15, 20 amp fuses and breakers
    • Battery charge receptacle
    • Lighting, signals/service:
      – LED lighting package
      – Backup and hazard lighting
      – Directional signals (front and rear LED)
      – Front stair access/service deck
      – Stop/tail lights (LED)
      – Engine compartment
      – Inverter energy LED warning lights
  • Operator Environment
    • Air conditioner
    • 12V DC power supply (1)
    • Cup holder (2)
    • Diagnostic connection port
    • Dome courtesy light
    • Entertainment radio ready:
      – 20 amp switched/10 amp memory converter
      – Speakers, and wiring harnesses
    • Gauges/indicators
    • Gauge panel:
      – Hydraulic oil temperature
      – Engine coolant temperature
      – Fuel level
      – Electric engine control fault indicator
      – Electric hour meter
      – Speedometer
      – Tachometer
      – VIMS message center advisor
    • Heater/defroster
    • Storage space behind seat
    • ROPS cab, insulated/sound suppressed
    • Seat, operator, air suspension
    • Seatbelt, operator, three points
    • Seat, trainer, air suspension
    • Seatbelt, trainer, two point
    • Steering wheel, tilt, telescopic
    • Tinted glass
    • Window, electric powered, operator/passenger
    • Wiper, windshield, intermittent control and washer
    • Fixed access ladder
  • Fluids
    • Extended life coolant to –35° C (–30° F)
  • Other Standard Equipment
    • Traction control system
    • Auxiliary “buddy” dumping quick connect
    • Auxiliary steering quick connect (towing)
    • Rotating component guards
    • Fast fill fuel system (RH side)
    • Fuel filter with water separator
    • Ground level battery lockout
    • Machine lockout
    • Engine start lockout
    • Ground level engine shut-down
    • Rock ejectors (chain)
    • Tow hooks and pin (front)
    • Tow pin (rear) (empty truck only)
    • Mudflaps
    • Automatic lubrication system
    • SOS℠ sample points (hydraulic, cooling, engine)
    • Payload red/green indicator
    • Cat DETECT radar and camera system
    • Product Link Elite
    • 4922 L (1,300 gal) fuel tank and fast fill system (right hand fill)

Optional Equipment:

  • Optional Equipment
    • 2312 kW (3,100 hp) setting available
    • Throttle lock
    • Timer, engine shutdown
    • Body heat exhaust
    • Fog lights
    • LED Work Lights
    • English or Metric gauges
    • Payload, digital display
    • Powered access ladder
    • Inverter platform
    • Fast fill fuel system (front and left)
    • Rims: Six (6) position and quick change
    • ANSI and ISO service instructions
    • Retarding indicator light
    • Front bumper center tow attachment
    • Brake wear indicator tool
    • Coolant –50° C (–58° F)
    • HE dump body rock box liner
    • Heated mirrors (LH and RH)
    • Wheel chocks (ANSI and ISO)
    • Portable fire extinguisher
    • Murphy gauge
    • High efficiency dump body
      – 1530 kg/m³ (2,580 lb/yd³) density body
      – 1650 kg/m³ (2,780 lb/yd³) density body
      – 1770 kg/m³ (2,980 lb/yd³) density body
    • Side profile lighting
    • Central service

See how 798 AC compares against frequently compared products

798 AC

Engine Model
Cat® C175-16
Gross Power - SAE J1995
3500 HP
Standard Gross Power - SAE J1995
3500 HP
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