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.
Nominal Rated Payload 410 ton (US)
Rated Gross Machine Weight 1375000 lb
Gross Power - SAE J1995 3500 hp
Engine Model Cat® C175-16
Body Weight Range 38 833 - 43 275 kg (85,611 - 95,406 lb)
Chassis Weight 453826lb
Nominal Rated Payload 410ton (US)
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.
Rated Gross Machine Weight 1375000lb
Bore 6.9in
Displacement 5187in³
Emissions Rating Fuel Optimized
Engine Model Cat® C175-16
Gross Power - SAE J1995 3500hp
Net Power - SAE J1349 3405hp
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
Optional Gross Power - SAE J1995 3100hp
Rated Speed 1800r/min
Stroke 8.7in
Cooling System 273gal (US)
Crankcase 124gal (US)
Fuel Tank 2000gal (US)
Hydraulic System (includes tank) 342gal (US)
Hydraulic Tank 273gal (US)
Cooling System 211gal (US)
Crankcase 82gal (US)
Diesel Exhaust Fluid Tank 100gal (US)
Final Drive - Each 67gal (US)
Fuel Tank 1300gal (US)
Fuel Tank (Tier 4) 1200gal (US)
Grease Tank 90lb
Hydraulic System - Including Tank 385gal (US)
Hydraulic Tank 296gal (US)
Note (1) DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option
Note Turning Diameter (ISO 7457:1997)
Steer Angle 39°
Steering Standards Steering Standards: ISO 5010:2007
Turning Diameter - Front 106.3ft
Controls IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Cooling System Cat variable speed, hydraulically driven cooling system
Generator/Alternator Brushless, engine mounted, dual bearing
Top Speed - Loaded 40mile/h
Total Reduction Ratio 35:01:00
Wheel Motor Cat high-torque AC induction, rear axle mounted
Dynamic Retarding Power - Continuous 5480hp
Electric Retarding Radial Grid Design
Front Wet Disc Brake Surface Area 22642in²
Load Brake Rear service brakes
Note Anti-Lock Brake System (ABS) optional with CMD package
Parking Brakes Four-corner, Multi-disc, Spring Applied, Hydraulically Released
Rear - Wet Disc Brake Surface Area 32730in²
Service Brakes Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Standards Service and Secondary: ISO 3450:2011
Front Axle - Empty 47%
Front Axle - Loaded 33%
Note Weight distributions optimized with Cat body.
Rear Axle - Empty 53%
Rear Axle - Loaded 67%
Heaped (SAE 2:1) 218-276 m³ (285-361 yd³)
Note Contact your local Cat dealer for body recommendations.
Struck 129-200 m³ (168-261 yd³)
Body Lower Time - Float 22s
Body Power Down- High Idle 17.5s
Body Raise Time - High Idle 21s
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.
Pump Flow - High Idle 257.3gal/min
Relief Valve Setting - Raise 3029psi
Type Twin, two-stage hydraulic cylinders with snubbing valve.
Effective Cylinder Stroke - Front 10in
Effective Cylinder Stroke - Rear 5in
Type Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
Air Conditioning HFC - 134A refrigerant: 21,600 Btu/h
FOPS Standards FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer.
Heater / Defroster 24600Btu/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.
Bore 6.9in
Displacement 6469in³
Emissions Rating Fuel Optimized
Engine Model Cat® C175-20
Gross Power SAE J1995:2014 4150hp
Net Power - SAE J1349:2011 4000hp
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
Rated Speed 1750r/min
Stroke 8.7in
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.
Rims 44" x 63" Rims
Standard Tires 59/80 R63
Centerline Front Tire Width 23.06ft
Centerline of Rear Dual Tire Width 19.5ft
Dump Clearance - Empty 5.72ft
Front Axle Clearance - Loaded 2.81ft
Front Canopy Height - Empty 26.01ft
Height - Top of ROPS 22.1ft
Inside Body Width 29.44ft
Loading Height - Empty 25.54ft
Note Dimensions listed includes canopy deflectors
Outside Body/Canopy Width (without rock deflectors) 31.62ft
Overall Canopy Width (with rock deflectors) 33.15ft
Overall Height - Body Raised 48.85ft
Overall Length 51.44ft
Overall Length (High Altitude only) 51.87ft
Overall Tire Width - Empty 30.27ft
Rear Axle - Tail 16.07ft
Rear Axle Clearance - Loaded 2.8ft
Wheel Base 21.9ft
Sound Standards The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008.
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
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
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
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
– SOS℠ 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® MineStar™ Detect (Radar and Camera) System
Cat® Product Link™ Elite (Cellular)
High Efficiency (HE) body, 218-276 m³ (285-361 yd³)
– HE Body Mounting Group
– Rock ejectors (chain)
Cat Extended Life Coolant (ELC) protects to –35° C (–30° F)
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
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
Powered access ladder, right hand ground access (High Altitude only)
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
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® 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
HE rock box liner
HE canopy rock deflectors
HE rear tire rock deflectors
HE impact liner
Chain and solid bar
Canopy Extension
Antifreeze/coolant protects to –50° C (–58° F)
