798 AC
798 AC
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Total Reduction Ratio35:01:00
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Top Speed - Loaded40 mile/h 64 km/h
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Generator/AlternatorBrushless, engine mounted, dual bearing
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ControlsIGBT Inverter Technology, air cooled, pressurized cabinet with filtration
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Wheel MotorCat high-torque AC induction, rear axle mounted
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Cooling SystemCat variable speed, hydraulically driven cooling system
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TypeTwin, two-stage hydraulic cylinders with snubbing valve.
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Pump Flow - High Idle257.3 gpm 964 L/min
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Relief Valve Setting - Raise3029 psi 20884 kPa
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Body Raise Time - High Idle21 s 21 s
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Body Lower Time - Float22 s 22 s
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Body Power Down- High Idle17.5 s 17.5 s
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Note (1)Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages.
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Note (2)Power raise in both stages; power down capability in both stages.
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Note (3)Automatic body-lower modulation reduces impact on frame.
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Service BrakesFour-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
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Front Wet Disc Brake Surface Area22642 in² 146081 cm²
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Rear - Wet Disc Brake Surface Area32730 in² 211163 cm²
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StandardsService and Secondary: ISO 3450:2011
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Electric RetardingRadial Grid Design
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Dynamic Retarding Power - Continuous5480 hp 4086 kW
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Parking BrakesFour-corner, Multi-disc, Spring Applied, Hydraulically Released
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Load BrakeRear service brakes
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NoteAnti-Lock Brake System (ABS) optional with CMD package
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Air ConditioningHFC - 134A refrigerant: 21,600 Btu/h
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Heater / Defroster24600 Btu/h 24600 Btu/h
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NoteAmbient capabilities down to -15C (5F) for heater/defroster and up to 50C (122F) for air conditioning.
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ROPS Standards (1)ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer.
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FOPS StandardsFOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer.
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Struck129-200 m³ (168-261 yd³)
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Heaped (SAE 2:1)218-276 m³ (285-361 yd³)
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NoteContact your local Cat dealer for body recommendations.
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Height - Top of ROPS22.1 ft 6720 mm
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Overall Length51.44 ft 15679 mm
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Wheel Base21.9 ft 6674 mm
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Rear Axle - Tail16.07 ft 4898 mm
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Dump Clearance - Empty5.72 ft 1744 mm
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Loading Height - Empty25.54 ft 7784 mm
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Overall Height - Body Raised48.85 ft 14890 mm
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Centerline Front Tire Width23.06 ft 7028 mm
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Front Axle Clearance - Loaded2.81 ft 855 mm
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Overall Canopy Width (with rock deflectors)33.15 ft 10103 mm
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Outside Body/Canopy Width (without rock deflectors)31.62 ft 9639 mm
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Inside Body Width29.44 ft 8973 mm
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Front Canopy Height - Empty26.01 ft 7928 mm
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Rear Axle Clearance - Loaded2.8 ft 854 mm
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Centerline of Rear Dual Tire Width19.5 ft 5943 mm
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Overall Tire Width - Empty30.27 ft 9226 mm
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Overall Length (High Altitude only)51.87 ft 15810 mm
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NoteDimensions listed includes canopy deflectors
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Gross Power - SAE J19953500 hp 2610 kW
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Engine ModelCat® C175-16
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Net Power - SAE J13493405 hp 2539 kW
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Optional Gross Power - SAE J19953100 hp 2312 kW
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Rated Speed1800 r/min 1800 r/min
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Emissions RatingFuel Optimized
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Bore6.9 in 175 mm
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Stroke8.7 in 220 mm
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Displacement5187 in³ 85 l
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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.
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Note (2)U.S. EPA Tier 4 Final / EU Stage V available for applicable markets.
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Note (3)Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp
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Engine ModelCat® C175-20
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Gross Power SAE J1995:20144150 hp 3095 kW
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Net Power - SAE J1349:20114000 hp 2983 kW
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Rated Speed1750 r/min 1750 r/min
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Emissions RatingFuel Optimized
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Bore6.9 in 175 mm
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Stroke8.7 in 220 mm
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Displacement6469 in³ 106 l
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Note 1Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
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Note 2Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp
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Fuel Tank1300 gal (US) 4922 l
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Fuel Tank (Tier 4)1200 gal (US) 4542 l
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Diesel Exhaust Fluid Tank100 gal (US) 379 l
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Cooling System211 gal (US) 799 l
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Crankcase82 gal (US) 310 l
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Final Drive - Each67 gal (US) 254 l
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Hydraulic System - Including Tank385 gal (US) 1458 l
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Hydraulic Tank296 gal (US) 1121 l
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Grease Tank90 lb 41 kg
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Note (1)DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option
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Fuel Tank2000 gal (US) 7571 l
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Cooling System273 gal (US) 1032 l
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Crankcase124 gal (US) 471 l
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Hydraulic Tank273 gal (US) 1032 l
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Hydraulic System (includes tank)342 gal (US) 1296 l
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Sound StandardsThe operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008.
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Steer Angle39 ° 39 °
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Turning Diameter - Front106.3 ft 32.4 m
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Steering StandardsISO 5010:2019
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NoteTurning Diameter (ISO 7457:1997)
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TypeSelf-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
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Effective Cylinder Stroke - Front10 in 254 mm
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Effective Cylinder Stroke - Rear5 in 133.35 mm
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Rims44" x 63" Rims
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Standard Tires59/80 R63
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Note (1)Quick Change Rims optional.
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Note (2)Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.
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Front Axle - Empty47 % 47 %
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Rear Axle - Empty53 % 53 %
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Front Axle - Loaded33 % 33 %
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Rear Axle - Loaded67 % 67 %
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NoteWeight distributions optimized with Cat body.
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Nominal Rated Payload410 ton (US) 372 t
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Rated Gross Machine Weight1375000 lb 623690 kg
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Chassis Weight453826 lb 205852 kg
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Body Weight Range38 833 - 43 275 kg (85,611 - 95,406 lb)
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Note (1)Consult your tire manufacturer for maximum tire load.
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Note (2)Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.
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Note (3)Body weight varies depending on how body is equipped.
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.
POWER TRAIN
OPERATION AND CONTROLS
ELECTRICAL
ADDITIONAL FEATURES AND EQUIPMENT
CAT® TECHNOLOGY PRODUCTS
DUMP BODY
– HE Body Mounting Group
– Rock ejectors (chain)
ANTIFREEZE
The Toromont Cat advantage
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Contact an equipment specialist
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