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798 AC

798 AC

Cat Mining Trucks are engineered for performance, designed for comfort and built to last. These powerful haul trucks are able to move more material at a lower cost.

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Specifications
AC Drive System
  • Total Reduction Ratio
    35:01:00
  • Top Speed - Loaded
    40 mile/h 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
Body Hoists
  • Type
    Twin, two-stage hydraulic cylinders with snubbing valve.
  • Pump Flow - High Idle
    257.3 gal/min 964 l/min
  • Relief Valve Setting - Raise
    3029 psi 20884 kPa
  • Body Raise Time - High Idle
    21 s 21 s
  • Body Lower Time - Float
    22 s 22 s
  • Body Power Down- High Idle
    17.5 s 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.
Braking System
  • Service Brakes
    Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
  • Front Wet Disc Brake Surface Area
    22642 in² 146081 cm²
  • Rear - Wet Disc Brake Surface Area
    32730 in² 211163 cm²
  • Standards
    Service and Secondary: ISO 3450:2011
  • Electric Retarding
    Radial Grid Design
  • Dynamic Retarding Power - Continuous
    5480 hp 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
Cab
  • Air Conditioning
    HFC - 134A refrigerant: 21,600 Btu/h
  • Heater / Defroster
    24600 Btu/h 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.
Capacity - HE Body - 100% fill factor
  • 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.
Dimensions (Approximate)
  • Height - Top of ROPS
    22.1 ft 6720 mm
  • Overall Length
    51.44 ft 15679 mm
  • Wheel Base
    21.9 ft 6674 mm
  • Rear Axle - Tail
    16.07 ft 4898 mm
  • Dump Clearance - Empty
    5.72 ft 1744 mm
  • Loading Height - Empty
    25.54 ft 7784 mm
  • Overall Height - Body Raised
    48.85 ft 14890 mm
  • Centerline Front Tire Width
    23.06 ft 7028 mm
  • Front Axle Clearance - Loaded
    2.81 ft 855 mm
  • Overall Canopy Width (with rock deflectors)
    33.15 ft 10103 mm
  • Outside Body/Canopy Width (without rock deflectors)
    31.62 ft 9639 mm
  • Inside Body Width
    29.44 ft 8973 mm
  • Front Canopy Height - Empty
    26.01 ft 7928 mm
  • Rear Axle Clearance - Loaded
    2.8 ft 854 mm
  • Centerline of Rear Dual Tire Width
    19.5 ft 5943 mm
  • Overall Tire Width - Empty
    30.27 ft 9226 mm
  • Overall Length (High Altitude only)
    51.87 ft 15810 mm
  • Note
    Dimensions listed includes canopy deflectors
Engine
  • Gross Power - SAE J1995
    3500 hp 2610 kW
  • Engine Model
    Cat® C175-16
  • Net Power - SAE J1349
    3405 hp 2539 kW
  • Optional Gross Power - SAE J1995
    3100 hp 2312 kW
  • Rated Speed
    1800 r/min 1800 r/min
  • Emissions Rating
    Fuel Optimized
  • Bore
    6.9 in 175 mm
  • Stroke
    8.7 in 220 mm
  • Displacement
    5187 in³ 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
  • Engine Model
    Cat® C175-20
  • Gross Power SAE J1995:2014
    4150 hp 3095 kW
  • Net Power - SAE J1349:2011
    4000 hp 2983 kW
  • Rated Speed
    1750 r/min 1750 r/min
  • Emissions Rating
    Fuel Optimized
  • Bore
    6.9 in 175 mm
  • Stroke
    8.7 in 220 mm
  • Displacement
    6469 in³ 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
Service Refill Capacities
  • Fuel Tank
    1300 gal (US) 4922 l
  • Fuel Tank (Tier 4)
    1200 gal (US) 4542 l
  • Diesel Exhaust Fluid Tank
    100 gal (US) 379 l
  • Cooling System
    211 gal (US) 799 l
  • Crankcase
    82 gal (US) 310 l
  • Final Drive - Each
    67 gal (US) 254 l
  • Hydraulic System - Including Tank
    385 gal (US) 1458 l
  • Hydraulic Tank
    296 gal (US) 1121 l
  • Grease Tank
    90 lb 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
  • Fuel Tank
    2000 gal (US) 7571 l
  • Cooling System
    273 gal (US) 1032 l
  • Crankcase
    124 gal (US) 471 l
  • Hydraulic Tank
    273 gal (US) 1032 l
  • Hydraulic System (includes tank)
    342 gal (US) 1296 l
Sound
  • Sound Standards
    The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008.
Steering
  • Steer Angle
    39 ° 39 °
  • Turning Diameter - Front
    106.3 ft 32.4 m
  • Steering Standards
    ISO 5010:2019
  • Note
    Turning Diameter (ISO 7457:1997)
Suspension
  • Type
    Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
  • Effective Cylinder Stroke - Front
    10 in 254 mm
  • Effective Cylinder Stroke - Rear
    5 in 133.35 mm
Tires
  • 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.
Weight Distributions - Approximate
  • Front Axle - Empty
    47 % 47 %
  • Rear Axle - Empty
    53 % 53 %
  • Front Axle - Loaded
    33 % 33 %
  • Rear Axle - Loaded
    67 % 67 %
  • Note
    Weight distributions optimized with Cat body.
Weights - Approximate
  • Nominal Rated Payload
    410 ton (US) 372 t
  • Rated Gross Machine Weight
    1375000 lb 623690 kg
  • Chassis Weight
    453826 lb 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.
Benefits

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.
Equipment Info

POWER TRAIN

Cat® C175-16 Diesel Engine: 2610 kW (3,500 hp) Fuel Optimized , U.S. EPA Tier 2 equivalent (available for applicable markets)

OPERATION AND CONTROLS

Integrated ROPS/FOPS cab, insulated/sound suppressed

ELECTRICAL

Audible Alarm, backup

ADDITIONAL FEATURES AND EQUIPMENT

Accumulators (Steering & Brake) – Australian and Canadian certified

CAT® TECHNOLOGY PRODUCTS

Cat® MineStar™ Detect (Radar and Camera) System

DUMP BODY

High Efficiency (HE) body, 218-276 m³ (285-361 yd³)
– HE Body Mounting Group
– Rock ejectors (chain)

ANTIFREEZE

Cat Extended Life Coolant (ELC) protects to –35° C (–30° F)