The Cat® 798 AC electric drive truck is designed to haul more — with more efficiency, controllability, and reliability than any other electric drive truck in the marketplace. And while it may be a recent addition to the Cat ultra-class lineup, it delivers the same powerful, proven performance you expect from a Cat truck. The 798 AC delivers a payload up to 372 tonnes (410 tons), high speed on grade, easier maintenance, and excellent electric retarding and brake performance. The result? Improved productivity, high availability, and more confident operators.
Gross Power – SAE J1995
2610 kW
Engine Model
Cat® C175-16
Net Power – SAE J1349
2539 kW
Product specifications for 798 AC Mining Trucks
Engine
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Gross Power – SAE J1995
2610 kW
Engine Model
Cat® C175-16
Net Power – SAE J1349
2539 kW
Optional Gross Power – SAE J1995
2312 kW
Rated Speed
1800 r/min
Emissions Rating
Fuel Optimized
Bore
175 mm
Stroke
220 mm
Displacement
85 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 / EU Stage V available for applicable markets.
Note (3)
Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp
Engine – High Altitude Only
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Engine Model
Cat® C175-20
Gross Power SAE J1995:2014
3095 kW
Net Power – SAE J1349:2011
2983 kW
Rated Speed
1750 r/min
Emissions Rating
Fuel Optimized
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
Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp
Weights – Approximate
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Rated Gross Machine Weight
623690 kg
Chassis Weight
205852 kg
Body Weight Range
38 833 – 43 275 kg (85,611 – 95,406 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
372 t
Weight Distributions – Approximate
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Front Axle – Empty
47 %
Rear Axle – Empty
53 %
Front Axle – Loaded
33 %
Rear Axle – Loaded
67 %
Note
Weight distributions optimized with Cat body.
AC Drive System
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Total Reduction Ratio
35:01:00
Top Speed – Loaded
64 km/h
Generator/Alternator
Brushless, engine mounted, dual bearing
Controls
IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Wheel Motor
Cat high-torque AC induction, rear axle mounted
Cooling System
Cat variable speed, hydraulically driven cooling system
Tires
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Rims
44″ x 63″ Rims
Standard Tires
59/80 R63
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
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Service Brakes
Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area
146081 cm²
Rear – Wet Disc Brake Surface Area
211163 cm²
Standards
Service and Secondary: ISO 3450:2011
Electric Retarding
Radial Grid Design
Dynamic Retarding Power – Continuous
4086 kW
Parking Brakes
Four-corner, Multi-disc, Spring Applied, Hydraulically Released
Load Brake
Rear service brakes
Note
Anti-Lock Brake System (ABS) optional with CMD package
Capacity – HE Body – 100% fill factor
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Struck
129-200 m³ (168-261 yd³)
Heaped (SAE 2:1)
218-276 m³ (285-361 yd³)
Note
Contact your local Cat dealer for body recommendations.
Body Hoists
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Type
Twin, two-stage hydraulic cylinders with snubbing valve.
Pump Flow – High Idle
964 l/min
Relief Valve Setting – Raise
20884 kPa
Body Raise Time – High Idle
21 s
Body Lower Time – Float
22 s
Body Power Down- High Idle
17.5 s
Note (1)
Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages.
Note (2)
Power raise in both stages; power down capability in both stages.
Note (3)
Automatic body-lower modulation reduces impact on frame.
Suspension
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Type
Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
Effective Cylinder Stroke – Front
254 mm
Effective Cylinder Stroke – Rear
133.35 mm
Service Refill Capacities
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Fuel Tank
4922 l
Fuel Tank (Tier 4)
4542 l
Diesel Exhaust Fluid Tank
379 l
Cooling System
799 l
Crankcase
310 l
Final Drive – Each
254 l
Hydraulic System – Including Tank
1458 l
Hydraulic Tank
1121 l
Grease Tank
41 kg
Note (1)
DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option
Service Refill Capacities – High Altitude Only
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Fuel Tank
7571 l
Cooling System
1032 l
Crankcase
471 l
Hydraulic Tank
1032 l
Hydraulic System (includes tank)
1296 l
Cab
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Air Conditioning
HFC – 134A refrigerant: 21,600 Btu/h
Heater / Defroster
24600 Btu/h
Note
Ambient capabilities down to -15C (5F) for heater/defroster and up to 50C (122F) for air conditioning.
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 Level II for Operator and ISO 13459:2012 Level II for Trainer.
Sound
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Sound Standards
The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008.
Steering
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Steer Angle
39 °
Turning Diameter – Front
32.4 m
Steering Standards
Steering Standards: ISO 5010:2007
Note
Turning Diameter (ISO 7457:1997)
Dimensions (Approximate)
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Height – Top of ROPS
6720 mm
Overall Length
15679 mm
Wheel Base
6674 mm
Rear Axle – Tail
4898 mm
Dump Clearance – Empty
1744 mm
Loading Height – Empty
7784 mm
Overall Height – Body Raised
14890 mm
Centerline Front Tire Width
7028 mm
Front Axle Clearance – Loaded
855 mm
Overall Canopy Width (with rock deflectors)
10103 mm
Outside Body/Canopy Width (without rock deflectors)
9639 mm
Inside Body Width
8973 mm
Front Canopy Height – Empty
7928 mm
Rear Axle Clearance – Loaded
854 mm
Centerline of Rear Dual Tire Width
5943 mm
Overall Tire Width – Empty
9226 mm
Overall Length (High Altitude only)
15810 mm
Note
Dimensions listed includes canopy deflectors
SAFETY
Greater visibility thanks to wide field of view from the cab and radial retard grid that improves right-hand view.
Safer access and egress with 600-mm-wide (23.6-in-wide) ladders, flat deck, toe kicks, and optional power access stair attachment.
Confidence-building features such as anti-rollback, traction controls, reverse shift inhibitor, Automatic Retarding Control, and door sensor warning for park brake application.
Full dynamic retarding through a compact radial grid, backstopped by the proven design of Caterpillar four-corner oil-cooled brakes, for stable handling and confident stopping.
Fully independent secondary brake system that provides emergency controllability with a hydraulically actuated secondary brake pedal that serves as a backup to electronic controls.
PRODUCTIVITY
The most efficient electric drive truck in its size class — moving more tonnes per liter (tons per gallon) and hauling more material faster—so you can move more over the course of a shift, or haul the same amount of material with fewer trucks.
Available with higher horsepower to boost productivity in deeper pits, plus electronically-selectable lower horsepower settings that allow the 798 to better align with mixed fleets.
Ease of operation and reduced costs thanks to deep integration of Cat engine, AC drive system, hydraulics and controls.
End-to-end visibility of all truck parameters for optimized fuel efficiency, speed on grade and parasitic loads across the operating range.
Excellent slow speed control within service areas as well as superior motor torque and acceleration pulling away from the shovel.
OPERATOR COMFORT
Ergonomic cab layout, excellent all-around visibility, and controls, levers and switches that are positioned for ease of use.
Automatic climate control and reduced vibration and sound.
Next generation seat with height adjuster, adjustable shoulder stock to keep the seatbelt from rubbing, and seat back, side and lumbar bolsters to increase stability.
SERVICEABILITY
High displacement, low rpm rating and conservative horsepower ratings, which mean more time on the haul road and less time in the shop.
Inlet manifolds and turbochargers that are located outside of the engine’s V, giving the service technicians more space to work on top of the engine and within the engine bay.
Sealed and pressurized inverter cabinet that requires no cleaning, eliminating hundreds of hours of maintenance over the life of the truck/
Engine walkways and service platforms, modular components, service-friendly layout and ground-level grouped service points.
Extended oil change interval (up to three times) with standard engine equipment including Centrifugal Oil Filter (COF) and Self-Cleaning Filter (SCF).
DURABILITY AND LONG LIFE
First overhaul life of 25,000 hours for lower cost of ownership, with proven C175 engine and electric drive system.
Highly validated and proven straight frame rail design that eliminates the bends and breaks that can occur at stress concentrations.
Outstanding durability delivered by box section construction that uses Caterpillar proprietary steel specification for excellent welding characteristics.
Increased frame life thanks to deep section main rails in critical areas of the frame lower stress levels.
Frame, powertrain, engine and components that are built to be rebuilt — delivering multiple lives of like-new performance at a fraction-of-new price.
PROVEN AC DRIVE & POWERTRAIN
High voltage system that operates at lower current than most competitive trucks, contributing to higher efficiency, lower heat generation, smaller and lighter components, and longer component life.
Radial style retarding grid with AC electric motor that requires no regular motor maintenance and is quieter and lighter than box grids.
State-of-the-art high voltage IGBTs for maximum AC drive system efficiency, and a dual-bearing brushless alternator that delivers long life and less maintenance, with no shimming required.
AC Drive dynamic retarding for continuous retarding power; AC electric motor that reduces maintenance; and state-of-the-art high voltage IGBTs for maximum AC drive system efficiency.
Variable hydraulic blower fan, which provides optimized cooling even at idle for increased component performance and life.
SUSTAINABILITY
Designed to use less fuel, which reduces engine emissions and carbon footprint.
Optional U.S. EPA Tier 4 Final / EU Stage V engine, which reduces NOx by 62% and particulates by 93% when compared to Tier 1 emissions.
Reduced waste thanks to Centrifugal Oil Filter (COF), standard self-cleaning engine filter, extended oil change intervals and reduced oil usage.
Engines compatible with diesel fuel blended with lower-carbon intensity fuels such as biofuels and renewable fuels, plus power options like trolley.
Cat Rebuild and Cat Reman programs, which preserve raw materials, conserve energy and reduce emissions.
TECHNOLOGY SOLUTIONS
Equipped with standard Product Link™ Elite monitoring system, which delivers health and payload information to keep performance high and enable proactive maintenance planning.
Factory-ready for fully integrated Cat MineStar™ Command for hauling, an autonomous hauling solution proven to increase productivity up to 30%.
Optional MineStar Fleet, a fleet monitoring system, to measure, manage and maximize the overall hauling operation.
Optional MineStar Detect proximity detection system, which uses cameras to give operators a better view of what’s happening around their equipment.
Optional in-cab Cat Driver Safety System (DSS) intervenes when operator fatigue or distraction are detected.
CAT BODIES
Bodies designed to fit with the chassis, sized to meet payload requirements and work as part of the truck system.
High Efficiency (HE) dump body option that is lightweight, simplified and durable.
With unique minimal structure design, HE body provides long life while minimizing weight for increased payload.
HE body sized and configured to meet the specific needs of the mine, dictated by fragmentation, abrasion, cohesion and the loading tool.
798 AC Standard Equipment
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POWER TRAIN
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Cat® C175-16 Diesel Engine: 2610 kW (3,500 hp) Fuel Optimized , U.S. EPA Tier 2 equivalent (available for applicable markets)
Cat® C175-16 Diesel Engine: 2610 kW (3,500 hp) U.S. EPA Tier 4 Final / EU Stage V (available for applicable markets)
C175-16 Diesel Engine
– Turbocharging (4) / Aftercooled (ATAAC)
– Centrifugal oil filter
– Self-cleaning oil filter
– Charging Alternator (225 amp), brushless
– Pre-lubrication/engine
– Air cleaner with precleaner (4)
– Multi-point oil pressure sensing
– Exhaust – Muffler, Right Side Exit
Cat C175-20 Diesel Engine (High Altitude Only)
– 3095 kW (4,150 hp) Fuel Optimized (available for applicable markets)
– Centrifugal oil filter
– Self-cleaning oil filter
– Charging Alternator (225 amp), brushless
– Pre-lubrication/engine
– Air cleaner with precleaner (4)
– Multi-point oil pressure sensing
– Exhaust – Muffler, Right Side Exit
Braking system:
– Electric dynamic retarding with blended low speed
– Oil-cooled, Multi-disc (front and rear) – Service, Parking, Secondary
– Load Brake (rear axle only)
– Extended Life Brake Disc Material
– Automatic Retarder Control (ARC)
– Brake Release Motor (towing)
Cat® AC Drivetrain:
– AC generator
– AC induction motors (high-torque)
– IGBT motor control
– Radial retarding grid with AC motor control
– Programmable top speed
– TorqueBoost technology
– Traction control system
Directional Shift Management:
– Body-up reverse neutralizer
– Body-up shift inhibitor
– Reverse shift inhibitor
– Neutral coast inhibitor
– Neutral start inhibitor
Additional Features:
– Rear axle continuous lubrication and filtration
– Rear axle continuous oil cooling
OPERATION AND CONTROLS
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Integrated ROPS/FOPS cab, insulated/sound suppressed
Seat, operator, air suspension, adjustable, heated/cooled
Seatbelt, operator, three point
Seat, trainer, air suspension, adjustable
Seatbelt, trainer, two point
Steering wheel, tilt, telescopic, horn
Horn, electric
Directional shift lever
Single Pedal Retarding & oil-cooled brake control
Automatic Retard Control (ARC) toggle switch
Load brake switch
Windshield with tinted/safety glass
Window, electric powered, operator/passenger
Windshield Wipers (2), intermittent control and washer
Visor (2)
Storage rear of seats
Cup holder (2)
Dome courtesy light
Entertainment radio ready with speakers and wiring harnesses
Converter, 12V
12V DC power supply (1)
Mirrors, standard (Left-Flat, Right-Convex)
Fixed access ladder, left hand ground access
Fixed access ladder, right hand round access (High Altitude Only)
HVAC:
– Pressurized, filtered environment
– Air conditioner
– Heater/defroster
Metric or English gauges:
– Speedometer
– Tachometer
– Electric hour meter
– Fuel level
– DEF level (U.S. EPA Tier 4 Final / EU Stage V engines only)
– Hydraulic oil temperature
– Engine coolant temperature
Service & Information:
– Diagnostic connection port
– Electric engine control fault indicator
– Alarm, Park brake / open operator door
– Third party telematics port
– VIMS message center advisor
ELECTRICAL
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Audible Alarm, backup
Electrical system, 24V with fuses and breakers
Batteries, 12V (8) 90 amp hour
Ground level Battery charge receptacle
Lighting, signals/service:
– Headlights (4 low beam, 4 high beam), LED
– Headlights (4 low beam, 2 high beam), LED (High Altitude only)
– Backup and marker/hazard, LED
– Directional signals (front and rear), LED
– Front stair access/service deck, LED
– Stop/tail lights, LED
– Engine compartment, LED
– Inverter energy warning lights, LED
Payload indicator, red/green
Payload, digital display
ADDITIONAL FEATURES AND EQUIPMENT
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Accumulators (Steering & Brake) – Australian and Canadian certified
Automatic lubrication system
Rotating component guards
Mud Flaps
Tow hooks and pins (front)
Tow pin (rear) (empty truck only)
44 x 63 rims, six position (6)
Fueling:
– 4922 L (1,300 gal) fuel tank (Fuel optimized engines only)
– 4543 L (1,200 gal) fuel tank (U.S. EPA Tier 4 Final / EU Stage V engines only)
– 379 L (100 gallon) DEF tank (U.S. EPA Tier 4 Final / EU Stage V engines only)
– Fuel filter with water separator
– 210 GPM Fast fill fuel system (Left and Right)
Service:
– Engine service platforms (2)
– ANSI or ISO service instructions
– S•O•S℠ sample points (hydraulic oil, engine coolant, engine oil)
– Ground level machine lockout (battery)
– Ground level engine shut-down
– Drivetrain lockout
– Drivetrain lockout at ground level (High Altitude only)
– Engine start lockout
– Auxiliary “buddy” dumping quick connect
– Auxiliary steering quick connect (towing)
CAT® TECHNOLOGY PRODUCTS
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Cat® MineStar™ Detect (Radar and Camera) System
Cat® Product Link™ Elite (Cellular)
DUMP BODY
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High Efficiency (HE) body, 218-276 m³ (285-361 yd³)
– HE Body Mounting Group
– Rock ejectors (chain)
ANTIFREEZE
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Cat Extended Life Coolant (ELC) protects to –35° C (–30° F)
798 AC Optional Equipment
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POWER TRAIN
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Cat® C175-16 Diesel Engine: 2312 kW (3,100 hp) power setting (Fuel optimized / U.S. EPA Tier 2 equiv. engines only)
Cat C175-20 Diesel Engine (High Alititude only): 2983 kW (4,000 hp) power setting, Fuel Optimized (available for applicable markets)
Body heat exhaust
OPERATION AND CONTROLS
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Throttle lock
Timer, engine shutdown
Heated mirrors (Left and Right)
Powered access ladder, left hand ground access
Language monitors: English, Spanish, Italian, Portuguese, Dutch, Norwegian, Swedish, Estonian, Latin, Lithuanian, Slovakian, Slovenian, Greek, Romanian, Russian, Polish, Czech, Hungarian, Icelandic, Finnish, Danish, Thai, Indonesian, Vietnam, Malaysian, Chinese
OPERATIONS AND CONTROLS
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Powered access ladder, right hand ground access (High Altitude only)
ELECTRICAL
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Lighting, signals/service:
– Fog lights, LED
– Work lights, LED
– Side profile lights, LED
– Dump body marker/stop lights, LED
Retarding indicator light, multi-color, cab exterior
Payload, digital display
ADDITIONAL FEATURES AND EQUIPMENT
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Fueling: 300 GPM Fast fill fuel system (Left and Right)
Portable fire extinguisher
Front bumper single-point center tow
Wheel chocks (ANSI and ISO)
44 x 63 rims, quick change (2 quick change, 4 standard)
Service:
– Inverter platform (rear access)
– Service Center, fast-fill
CAT® TECHNOLOGY PRODUCTS
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Cat® MineStar™ Detect (Camera Only) System
Cat® Product Link™ Elite (Satellite)
Cat® MineStar™ Health
Cat® MineStar™ Fleet
Cat® MineStar™ Terrain
Cat® MineStar™ Command-Ready
Cat® MineStar™ Command
Cat® Trolley Assist Attachment
DUMP BODY
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HE rock box liner
HE canopy rock deflectors
HE rear tire rock deflectors
HE impact liner
Chain and solid bar
Canopy Extension
ANTIFREEZE
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Antifreeze/coolant protects to –50° C (–58° F)
