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.
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Weights - Approximate
- Nominal Rated Payload
- 410ton (US)
- Rated Gross Machine Weight
- 1375000lb
- Chassis Weight
- 453826lb
- 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.
Engine
- Gross Power - SAE J1995
- 3500HP
- Engine Model
- Cat® C175-16
- Net Power - SAE J1349
- 3405HP
- Optional Gross Power - SAE J1995
- 3100HP
- Rated Speed
- 1800r/min
- Emissions Rating
- Fuel Optimized
- Bore
- 6.9in
- Stroke
- 8.7in
- Displacement
- 5187in³
- 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
Service Refill Capacities - High Altitude Only
- Fuel Tank
- 2000gal (US)
- Cooling System
- 273gal (US)
- Crankcase
- 124gal (US)
- Hydraulic Tank
- 273gal (US)
- Hydraulic System (includes tank)
- 342gal (US)
Service Refill Capacities
- Fuel Tank
- 1300gal (US)
- Fuel Tank (Tier 4)
- 1200gal (US)
- Diesel Exhaust Fluid Tank
- 100gal (US)
- Cooling System
- 211gal (US)
- Crankcase
- 82gal (US)
- Final Drive - Each
- 67gal (US)
- Hydraulic System - Including Tank
- 385gal (US)
- Hydraulic Tank
- 296gal (US)
- Grease Tank
- 90lb
- Note (1)
- DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option
Steering
- Steer Angle
- 39°
- Turning Diameter - Front
- 106.3ft
- Steering Standards
- Steering Standards: ISO 5010:2007
- Note
- Turning Diameter (ISO 7457:1997)
AC Drive System
- Total Reduction Ratio
- 35:01:00
- Top Speed - Loaded
- 40mile/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
Braking System
- Service Brakes
- Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
- Front Wet Disc Brake Surface Area
- 22642in²
- Rear - Wet Disc Brake Surface Area
- 32730in²
- Standards
- Service and Secondary: ISO 3450:2011
- Electric Retarding
- Radial Grid Design
- Dynamic Retarding Power - Continuous
- 5480HP
- 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
Weight Distributions - Approximate
- Front Axle - Empty
- 47%
- Rear Axle - Empty
- 53%
- Front Axle - Loaded
- 33%
- Rear Axle - Loaded
- 67%
- Note
- Weight distributions optimized with Cat body.
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.
Body Hoists
- Type
- Twin, two-stage hydraulic cylinders with snubbing valve.
- Pump Flow - High Idle
- 257.3gal/min
- Relief Valve Setting - Raise
- 3029psi
- Body Raise Time - High Idle
- 21s
- Body Lower Time - Float
- 22s
- Body Power Down- High Idle
- 17.5s
- 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
- Type
- Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
- Effective Cylinder Stroke - Front
- 10in
- Effective Cylinder Stroke - Rear
- 5in
Cab
- Air Conditioning
- HFC - 134A refrigerant: 21,600 Btu/h
- 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.
- FOPS Standards
- FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer.
Engine - High Altitude Only
- Engine Model
- Cat® C175-20
- Gross Power SAE J1995:2014
- 4150HP
- Net Power - SAE J1349:2011
- 4000HP
- Rated Speed
- 1750r/min
- Emissions Rating
- Fuel Optimized
- Bore
- 6.9in
- Stroke
- 8.7in
- Displacement
- 6469in³
- 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
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.
Dimensions (Approximate)
- Height - Top of ROPS
- 22.1ft
- Overall Length
- 51.44ft
- Wheel Base
- 21.9ft
- Rear Axle - Tail
- 16.07ft
- Dump Clearance - Empty
- 5.72ft
- Loading Height - Empty
- 25.54ft
- Overall Height - Body Raised
- 48.85ft
- Centerline Front Tire Width
- 23.06ft
- Front Axle Clearance - Loaded
- 2.81ft
- Overall Canopy Width (with rock deflectors)
- 33.15ft
- Outside Body/Canopy Width (without rock deflectors)
- 31.62ft
- Inside Body Width
- 29.44ft
- Front Canopy Height - Empty
- 26.01ft
- Rear Axle Clearance - Loaded
- 2.8ft
- Centerline of Rear Dual Tire Width
- 19.5ft
- Overall Tire Width - Empty
- 30.27ft
- Overall Length (High Altitude only)
- 51.87ft
- Note
- Dimensions listed includes canopy deflectors
Sound
- Sound Standards
- The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008.
Standard Equipment:
-
- Power Train
-
- 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
-
- 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
-
- 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
-
- 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® Technology Products
-
- Cat® MineStar™ Detect (Radar and Camera) System
- Cat® Product Link™ Elite (Cellular)
-
- Dump Body
-
- High Efficiency (HE) body, 218-276 m³ (285-361 yd³)
– HE Body Mounting Group
– Rock ejectors (chain)
- High Efficiency (HE) body, 218-276 m³ (285-361 yd³)
-
- Antifreeze
-
- Cat Extended Life Coolant (ELC) protects to –35° C (–30° F)
Optional Equipment:
-
- Power Train
-
- 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
-
- 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
-
- Powered access ladder, right hand ground access (High Altitude only)
-
- Electrical
-
- 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
- Lighting, signals/service:
-
- Additional Features And Equipment
-
- 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
-
- 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
-
- HE rock box liner
- HE canopy rock deflectors
- HE rear tire rock deflectors
- HE impact liner
- Chain and solid bar
- Canopy Extension
-
- Antifreeze
-
- Antifreeze/coolant protects to –50° C (–58° F)