794 AC

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Specifications

AC Drive System

Total Reduction Ratio

35:01:00
Top Speed - Loaded

37 mile/h 60 km/h
Generator/Alternator

Brushless, engine mounted, dual bearing
Controls

IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Wheel Motor

High-torque AC induction, rear axle mounted
Cooling System

Variable speed, hydraulically driven cooling system

Body Hoists

Pump Flow - High Idle (HAA at 1,800 rpm)

221 gal/min 840 l/min
Pump Flow - High Idle (LAA at 1,960 rpm)

240 gal/min 910 l/min
Relief Valve Setting - Raise

3029 psi 20884 kPa
Body Raise Time - High Idle

24 s 24 s
High Idle Body Lower Time - Float

20 s 20 s
Total Cycle Time

44 s 44 s
Note (1)

Twin, two-stage hydraulic cylinders mounted inside main frame; double-acting cylinders in both stages.
Note (2)

Power raise in both stages; power down in both stages possible.
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

20378 in² 131473 cm²
Rear - Wet Disc Brake Surface Area

30750 in² 198388 cm²
Standards

ISO 3450:2011
Parking Brake

Four-corner, Multi-disc, Spring applied, Hydraulically Released
Load Brake

Rear service brakes
Dynamic Retarding Power - Continuous

5480 hp 4086 kW

Cab

ROPS Standards (1)

Rollover Protective Structure (ROPS) meets ISO 3471:2008 criteria for operator and ISO 13459:2012 for trainer.
FOPS Standards

Falling Object Protective Structure (FOPS) meets ISO 3449:2005 Level II for operator and ISO 13459:2012 Level II for trainer.

Capacity - HE Body - 100% fill factor

Struck

108-133 m³ (142-175 yd³)
Heaped (SAE 2:1)

180-222 m³ (236-290 yd³)
Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate

0.63 in 16 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate

0.35 in 9 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate

0.31 in 8 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate

0.2 in 5 mm
Note

Contact your local Cat dealer for body recommendations.

Dimensions (Approximate)

Height - Top of ROPS

22.25 ft 6779 mm
Overall Length

50.75 ft 15463.5 mm
Wheel Base

21.83 ft 6644.5 mm
Rear Axle - Tail

15.5 ft 4716 mm
Ground Clearance

2.67 ft 906 mm
Dump Clearance

3 ft 1555 mm
Loading Height - Empty

22.92 ft 6995 mm
Overall Height - Body Raised

48.42 ft 14747 mm
Centerline Front Tire Width

23 ft 7024 mm
Front Axle Clearance

3.17 ft 969 mm
Canopy Width (without optional rock deflectors)

29.75 ft 9068 mm
Outside Body Width

29.75 ft 9062 mm
Inside Body Width

28.08 ft 8560 mm
Front Canopy Height

26.33 ft 8024 mm
Rear Axle - Clearance

3.08 ft 934 mm
Centerline of Rear Dual Tire Width

18.75 ft 5727 mm
Overall Tire Width

28.67 ft 8738 mm
Overall Canopy Width

31.5 ft 9611 mm

Engine

Gross Power - SAE J1995

3500 hp 2610 kW
Standard Gross Power - SAE J1995

3500 hp 2610 kW
Engine Model

Cat® C175-16
Optional Gross Power - SAE J1995

3100 hp 2312 kW
Optional Gross Power - SAE J1995 (Option 2)

2750 hp 2051 kW
Rated Speed

1800 r/min 1800 r/min
Net Power - SAE J1349

3405 hp 2539 kW
Emissions Rating

Fuel Optimized
Bore

6.9 in 175 mm
Stroke

8.7 in 220 mm
Displacement

5187 in³ 85 l
Note (1)

Contact factory for high altitude configuration.
Note (2)

Tier 4 / EU Stage V option available for regions that require these emissions standards.
Note (3)

Tier 4 / EU Stage V engine option Net Power - SAE J1349: 3434 HP (2561 kW)

Final Drives

Total Reduction Ratio

35:01:00

Service Refill Capacities

Fuel Tank

1300 gal (US) 4922 l
Cooling System

211 gal (US) 799 l
Crankcase

82 gal (US) 310 l
Final Drive - Each

67 gal (US) 254 l
Hydraulic Tank

296 gal (US) 1121 l
Hydraulic System - Including Tank

385 gal (US) 1458 l
Diesel Exhaust Fluid Tank

100 gal (US) 378 l
Note (1)

DEF Tank only available for EPA Tier 4 / EU Stage V engine option.

Sound

Sound Standards (1)

The operator sound pressure level measured according to work cycle procedures specified in ISO 6394 and 6396 is 75 dB(A) for cab offered by Caterpillar when properly installed, maintained, and tested with doors and windows closed.
Sound Standards (2)

Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.

Steering

Steering Standards

ISO 5010:2019
Note

Gross Machine Operating Weight is 521 631 kg (1,150,000 lb).
Steer Angle

39 ° 39 °

Tires

Standard Tires

53/80 R63
Rims

36" x 63"
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

49 % 49 %
Rear Axle - Empty

51 % 51 %
Front Axle - Loaded

33 % 33 %
Rear Axle - Loaded

67 % 67 %

Weights - Approximate

Nominal Rated Payload

327 ton (US) 297 t
Rated Gross Machine Weight

1150000 lb 521631 kg
Chassis Weight

426237 lb 193338 kg
Body Weight

64346 lb 29187 kg
Note (1)

Consult your tire manufacturer for maximum tire load.
Note (2)

Chassis weight with full fuel and fluids, standard & mandatory attachments, hoist, body mounting group, rims, and tires
Note (3)

Refer to Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.
Note (4)

Tier 4 Final / Stage V chassis weight: 426312 lb (193372 kg)

Benefits

SAFETY

Greater visibility thanks to wide field of view from the cab.
Safer access and egress with standard 600 mm) (24 in) wide ladders, flat deck, toe kicks, and optional power access stair attachment.
Confidence-building features such as anti-rollback, traction controls, park brake warning when exiting the cab and automatic retarder.
Best braking in its class, with four-corner wet disc brakes with blended mechanical service brakes and dynamics, plus Automatic Retarding Control for easier and more efficient retarding.
Ground-level system lockout, engine lockout and propulsion lockout (in ECM cabinet), VIMS monitoring, and stored energy dissipation at shutdown.

PRODUCTIVITY

Proven 90% physical availability.
Significant speed advantage to move more over the course of a shift — or move the same amount of material with fewer trucks.
Lower empty weight and higher-rated GMW for a higher-rated field payload vs. competitive trucks.
Ease of operation and reduced costs thanks to integrated Cat engine, AC drive system, hydraulics and controls.
Excellent slow speed control within the service areas and superior throttle response on acceleration to move out of the loading or dump areas.

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.

VERSATILITY

Proven in the field and working around the world — on four continents and in nine countries.
Ideal for a variety of applications and ores: soft rock, hard rock, deep pit, and flat haul; low altitude, high altitude, high ambient, and cold weather.
Optimized horsepower performance that makes it possible for the 794 to run in all areas of the mine — from deep pits to downhill hauls; from smooth, flat roads to areas of high rolling resistance — with the same engine.
Higher horsepower available to boost productivity in deeper pits, and an easy adjustment to a lower horsepower that allows the 794 to better align with mixed fleets and keep fuel costs lower.

SERVICEABILITY

Open engine access and platforms for service of engine, generator and inverter, plus ground-level filters and service.
Component layout with minimized hydraulics, all hydraulic lines on one side, and electric wiring on the other side.
Separate traction motors, brakes and final drives.
Modular component design for easy removal and installation.
AC grid blower motor designed for longer life and less maintenance, plus pressurized and filtered AC drive inverter that requires less maintenance.

DURABILITY AND LONG LIFE

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

Reduced operating costs thanks to the integrated engine and powertrain 100% designed, validated and built by Caterpillar.
Radial style retarding grid with AC electric motor that requires no regular motor maintenance and is quieter and lighter than box grids.
AC Drive dynamic retarding for continuous retarding power, and an AC electric motor that reduces maintenance.
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.
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), Enhanced Engine Oil Filtration (EEOF) package, 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

C175-16 Diesel Engine
– Turbocharging (4)/aftercooled
– Air to air after cooler (ATAAC)
– Air cleaner (4) with precleaner
– Elevated low idle control
– Multi-point oil pressure sensing
– Pre-lubrication/engine