794 AC Mining Truck

794 AC Mining Truck

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The Cat® 794 AC electric drive truck delivers a full 327-ton (297-tonne) payload, increased speed on grade, 34% more retarding power than competitive trucks, superior braking performance and easier maintenance. ...
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Weights - Approximate

Nominal Rated Payload
327ton (US)
Rated Gross Machine Weight
1150000lb
Chassis Weight
426237lb
Body Weight
64346lb
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)

Engine

Gross Power - SAE J1995
3500HP
Standard Gross Power - SAE J1995
3500HP
Engine Model
Cat® C175-16
Optional Gross Power - SAE J1995 (Option 2)
2750HP
Optional Gross Power - SAE J1995
3100HP
Rated Speed
1800r/min
Net Power - SAE J1349
3405HP
Emissions Rating
Fuel Optimized
Bore
6.9in
Stroke
8.7in
Displacement
5187in³
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)

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.

Final Drives

Total Reduction Ratio
35:1

Braking System

Service Brakes
Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area
20378in²
Rear - Wet Disc Brake Surface Area
30750in²
Standards
ISO 3450:2011
Parking Brake
Four-corner, Multi-disc, Spring applied, Hydraulically Released
Load Brake
Rear service brakes
Dynamic Retarding Power - Continuous
5480HP

AC Drive System

Total Reduction Ratio
35:1
Top Speed - Loaded
37mile/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

Weight Distributions - Approximate

Front Axle - Empty
49%
Rear Axle - Empty
51%
Front Axle - Loaded
33%
Rear Axle - Loaded
67%

Service Refill Capacities

Fuel Tank
1300gal (US)
Cooling System
211gal (US)
Crankcase
82gal (US)
Final Drive - Each
67gal (US)
Hydraulic Tank
296gal (US)
Hydraulic System - Including Tank
385gal (US)
Diesel Exhaust Fluid Tank
100gal (US)
Note (1)
DEF Tank only available for EPA Tier 4 / EU Stage V engine option.

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
0.63in
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate
0.35in
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate
0.31in
Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate
0.2in
Note
Contact your local Cat dealer for body recommendations.

Body Hoists

Pump Flow - High Idle (HAA at 1,800 rpm)
221gal/min
Pump Flow - High Idle (LAA at 1,960 rpm)
240gal/min
Relief Valve Setting - Raise
3029psi
Body Raise Time - High Idle
24s
High Idle Body Lower Time - Float
20s
Total Cycle Time
44s
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.

Dimensions (Approximate)

Height - Top of ROPS
22.25ft
Overall Length
50.75ft
Wheel Base
21.83ft
Rear Axle - Tail
15.5ft
Ground Clearance
2.67ft
Dump Clearance
3ft
Loading Height - Empty
22.92ft
Overall Height - Body Raised
48.42ft
Centerline Front Tire Width
23ft
Front Axle Clearance
3.17ft
Canopy Width (without optional rock deflectors)
29.75ft
Outside Body Width
29.75ft
Inside Body Width
28.08ft
Front Canopy Height
26.33ft
Rear Axle - Clearance
3.08ft
Centerline of Rear Dual Tire Width
18.75ft
Overall Tire Width
28.67ft
Overall Canopy Width
31.5ft

ROPS

ROPS Standards
ROPS (Rollover Protective Structure) meets ISO 3471:1994.
FOPS Standards
FOPS (Falling Object Protective Structure) meets ISO 3449:1992.

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 5010:2007
Note
Gross Machine Operating Weight is 521 631 kg (1,150,000 lb).
Steer Angle
39°

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.

Optional Equipment:

    Optional Equipment
    • 2050 kW (2,750 hp) and 2312 kW (3,100 hp) options available
    • HAA arrangements available
    • Throttle lock
    • Timer, engine shutdown
    • Body heat exhaust
    • Gel batteries (8)
    • High Intensity Discharge (HID) lighting package
    • LED lighting package
    • Fog lights
    • LED work lights
    • English or Metric gauges
    • Payload, digital display
    • Powered access ladder
    • Inverter platform
    • Fast fill fuel system (front and right)
    • Rims: Six (6) position and quick change
    • ANSI and ISO service instructions
    • Retarding indicator light
    • Cab pedestal for additional display
    • Radio/CD player
    • Front bumper center tow attachment
    • Brake wear indicator tool
    • Coolant –50° C (–58° F)
    • HE dump body rock box liner
    • HE dump body canopy rock deflectors
    • Heated mirrors (LH and RH)
    • Rear axle oil cooler
    • Standard accumulators and Australia/Canada certified accumulators
    • Hot start, for cold weather
    • Diesel fuel warmer
    • Wheel chocks (ANSI or ISO)
    • Portable fire extinguisher
    • Murphy gauge
    • High efficiency dump body
      – 1543 kg/m³ (2,600 lb/yd³) density body
      – 1721 kg/m³ (2,900 lb/yd³) density body
      – 1839 kg/m³ (3,100 lb/yd³) density body
      – 2076 kg/m³ (3,500 lb/yd³) density body
    • Canopy extension
    • Body rock box
    • Side profile lighting
    • Central service
    • 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