794 AC Mining Truck

The Cat® 794 AC electric drive truck delivers a full 327-ton payload, increased speed on grade, 34% more retarding power than competitive trucks, superior braking performance and easier maintenance. The result? High availability, more confident operators and improved productivity. The 794 features a proven electric drive powertrain that is Caterpillar designed, integrated and supported. Validated on sites around the world, the 794 has proven its performance in a variety of applications, making it the ideal choice for a wide variety of applications. It hauls more every load, every cycle and every shift. And it delivers a better bottom line to the most important mine in the world: yours.

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.

Standard Equipment

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
  • Braking system:
    – Brake release towing
    – Oil-cooled, multi-disc (front and rear) (service, retarding, parking, secondary)
    – Automatic Retarder Control
    – Electric dynamic retarding with blended low speed
    – Extended life brake disc material
  • Cat AC drive train:
    – IGBT controlled AC induction motors
    – AC generator
    – AC cooled radial grid
  • Body-up reverse neutralizer
  • Programmable top speed
  • Rear axle continuous lube/filtration
  • Reverse shift inhibitor
  • Directional shift management
  • Neutral coast inhibitor
  • Body-up shift inhibitor
  • Neutral start inhibitor
ELECTRICAL
  • Alarm, backup
  • Brushless alternator 150 amp charging
  • Batteries – 12V (8) 90 amp hour
  • Converter, 12V electrical
  • Electrical system, 24V, 10, 15, 20 amp fuses and breakers
  • Battery charge receptacle
  • Lighting, signals/service:
    – Halogen lighting package
    – Backup and hazard lighting
    – Directional signals (front and rear LED)
    – Front stair access/service deck
    – Stop/tail lights (LED)
    – Engine compartment
    – Inverter energy LED warning lights
OPERATOR ENVIRONMENT
  • Air conditioner
  • 12V DC power supply (1)
  • Cup holder (2)
  • Diagnostic connection port
  • Dome courtesy light
  • Entertainment radio ready:
    – 20 amp switched/10 amp memory converter
    – Speakers, and wiring harnesses
  • Gauges/indicators
  • Gauge panel:
    – Hydraulic oil temperature
    – Engine coolant temperature
    – Fuel level
    – DEF level (Tier 4 / Stage V only)
    – Electric engine control fault indicator
    – Electric hour meter
    – Speedometer
    – Tachometer
    – VIMS message center advisor
  • Heater/defroster
  • Storage space behind seat
  • ROPS cab, insulated/sound suppressed
  • Seat, operator, air suspension
  • Seatbelt, operator, three points
  • Seat, trainer, air suspension
  • Seatbelt, trainer, two point
  • Steering wheel, tilt, telescopic
  • Tinted glass
  • Window, electric powered, operator/passenger
  • Wiper, windshield, intermittent control and washer
  • Fixed access ladder
FLUIDS
  • Extended life coolant to –35° C (–30° F)
OTHER STANDARD EQUIPMENT
  • Traction control system
  • Auxiliary “buddy” dumping quick connect
  • Auxiliary steering quick connect (towing)
  • Rotating component guards
  • Fast fill fuel system (LH and RH side)
  • Fast fill DEF system (RH side) - Tier 4 / Stage V only
  • Fuel filter with water separator
  • Ground level battery lockout
  • Machine lockout
  • Engine start lockout
  • ECM cabinet lockout
  • Ground level engine shut-down
  • Rock ejectors (chain)
  • Tow hooks and pin (front)
  • Tow pin (rear) (empty truck only)
  • Mudflaps
  • Coolant level gauge (on radiator)
  • Automatic lubrication system
  • S•O•S℠ sample points (hydraulic, cooling, engine)

Additional information

Engine - Gross Power - SAE J1995

2610 kW ( 3500 HP )

Offering Type

Engine Model

Cat® C175-16

Engine - Optional Gross Power - SAE J1995

2312 kW ( 3100 HP )

Engine - Rated Speed

1800 r/min ( 1800 r/min )

Engine - Net Power - SAE J1349

2539 kW ( 3405 HP )

Engine - Emissions Rating

Fuel Optimized

Engine - Bore

175 mm ( 6.9 in )

Engine - Stroke

220 mm ( 8.7 in )

Engine - Displacement

85 l ( 5187 in³ )

Weights - Approximate - Nominal Rated Payload

297 t ( 327 ton (US) )

Weights - Approximate - Rated Gross Machine Weight

521631 kg ( 1150000 lb )

Weights - Approximate - Chassis Weight

193338 kg ( 426237 lb )

Weights - Approximate - Body Weight

29187 kg ( 64346 lb )

Weights - Approximate - Note (1)

Consult your tire manufacturer for maximum tire load.

Weights - Approximate - Note (2)
Weights - Approximate - Note (3)

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

Weights - Approximate - Note (4)

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

Final Drives - Total Reduction Ratio

35:01:00

AC Drive System - Total Reduction Ratio

35:01:00

AC Drive System - Top Speed - Loaded

60 km/h ( 37 mile/h )

AC Drive System - Generator/Alternator

Brushless, engine mounted, dual bearing

AC Drive System - Controls

IGBT Inverter Technology, air cooled, pressurized cabinet with filtration

AC Drive System - Wheel Motor

High-torque AC induction, rear axle mounted

AC Drive System - Cooling System

Variable speed, hydraulically driven cooling system

Standard Tires

53/80 R63

Tires - Rims

36" x 63"

Tires - Note (1)

Quick Change Rims optional.

Tires - Note (2)

Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.

Braking System - Service Brakes

Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated

Braking System - Front Wet Disc Brake Surface Area

131473 cm² ( 20378 in² )

Braking System - Rear - Wet Disc Brake Surface Area

198388 cm² ( 30750 in² )

Braking System - Standards

ISO 3450:2011

Braking System - Parking Brake

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

Braking System - Load Brake

Rear service brakes

Braking System - Dynamic Retarding Power - Continuous

4086 kW ( 5480 HP )

Weight Distributions - Approximate - Front Axle - Empty

49 % ( 49 % )

Weight Distributions - Approximate - Rear Axle - Empty

51 % ( 51 % )

Weight Distributions - Approximate - Front Axle - Loaded

33 % ( 33 % )

Weight Distributions - Approximate - Rear Axle - Loaded

67 % ( 67 % )

Capacity - HE Body - 100% fill factor - Struck

108-133 m³ (142-175 yd³)

Capacity - HE Body - 100% fill factor - Heaped (SAE 2:1)

180-222 m³ (236-290 yd³)

Body Hoists - Relief Valve Setting - Raise

20884 kPa ( 3029 psi )

Body Hoists - Body Raise Time - High Idle

24 s ( 24 s )

Body Hoists - High Idle Body Lower Time - Float

20 s ( 20 s )

Capacity - HE Body - 100% fill factor - Note

Contact your local Cat dealer for body recommendations.

Body Hoists - Note (1)

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

Body Hoists - Note (2)

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

Body Hoists - Note (3)

Automatic body-lower modulation reduces impact on frame.

Service Refill Capacities - Fuel Tank

4922 l ( 1300 gal (US) )

Service Refill Capacities - Cooling System

799 l ( 211 gal (US) )

Service Refill Capacities - Crankcase

310 l ( 82 gal (US) )

Service Refill Capacities - Final Drive - Each

254 l ( 67 gal (US) )

Service Refill Capacities - Hydraulic Tank

1121 l ( 296 gal (US) )

Service Refill Capacities - Hydraulic System - Including Tank

1458 l ( 385 gal (US) )

Service Refill Capacities - Diesel Exhaust Fluid Tank

378 l ( 100 gal (US) )

Service Refill Capacities - Note (1)

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

Cab - ROPS Standards (1)

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

Cab - FOPS Standards

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

Sound Standards (1)
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 Standards

ISO 5010:2007

Steering - Note

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

Steering - Steer Angle

39 ° ( 39 ° )

Dimensions (Approximate) - Height - Top of ROPS

6779 mm ( 22.25 ft )

Dimensions (Approximate) - Overall Length

15463.5 mm ( 50.75 ft )

Dimensions (Approximate) - Wheel Base

6644.5 mm ( 21.83 ft )

Dimensions (Approximate) - Rear Axle - Tail

4716 mm ( 15.5 ft )

Dimensions (Approximate) - Ground Clearance

906 mm ( 2.67 ft )

Dimensions (Approximate) - Dump Clearance

1555 mm ( 3 ft )

Dimensions (Approximate) - Loading Height - Empty

6995 mm ( 22.92 ft )

Dimensions (Approximate) - Overall Height - Body Raised

14747 mm ( 48.42 ft )

Dimensions (Approximate) - Centerline Front Tire Width

7024 mm ( 23 ft )

Dimensions (Approximate) - Outside Body Width

9062 mm ( 29.75 ft )

Dimensions (Approximate) - Inside Body Width

8560 mm ( 28.08 ft )

Dimensions (Approximate) - Front Canopy Height

8024 mm ( 26.33 ft )

Dimensions (Approximate) - Rear Axle - Clearance

934 mm ( 3.08 ft )

Dimensions (Approximate) - Centerline of Rear Dual Tire Width

5727 mm ( 18.75 ft )

Dimensions (Approximate) - Overall Tire Width

8738 mm ( 28.67 ft )

Dimensions (Approximate) - Overall Canopy Width

9611 mm ( 31.5 ft )

Engine - Note (1)

Contact factory for high altitude configuration.

Engine - Note (2)

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

Engine - Note (3)

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

Engine - Optional Gross Power - SAE J1995 (Option 2)

2051 kW ( 2750 HP )

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

840 l/min ( 221 gal/min )

Capacity - HE Body - 100% fill factor - Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate

9 mm ( 0.35 in )

Dimensions (Approximate) - Front Axle Clearance

969 mm ( 3.17 ft )

Body Hoists - Total Cycle Time

44 s ( 44 s )

Dimensions (Approximate) - Canopy Width (without optional rock deflectors)

9068 mm ( 29.75 ft )

Capacity - HE Body - 100% fill factor - Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate

8 mm ( 0.31 in )

Capacity - HE Body - 100% fill factor - Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate

5 mm ( 0.2 in )

Engine - Standard Gross Power - SAE J1995

2610 kW ( 3500 HP )

Capacity - HE Body - 100% fill factor - Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate

16 mm ( 0.63 in )

Body Hoists - Pump Flow - High Idle (LAA at 1,960 rpm)

910 l/min ( 240 gal/min )

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