794 AC Mining Truck

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Operating Specifications

Nominal Payload Capacity
320 tons
Top Speed – Loaded
37 mph
Steer Angle
39 Degrees
Gross Machine Operating Weight (GMW)
1,150,000 lb
Minimum Turning Radius
53 ft
Note
Payload assumes no debris, no extra options or attachments.
Note
Refer to the Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.
Nominal Payload Capacity
327 ton (US)
Steer Angle
39 °
Top Speed - Loaded
37 mile/h
Note (1)
Payload assumes no debris, no extra options or attachments.
Note (2)
Refer to the Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.

Engine

Engine Model
Cat® C175-16
Gross Power - SAE J1995
3,500 hp
Bore
7 in
Stroke
9 in
Displacement
5,187 in3
Standard Gross Power - SAE J1995*
3,500 HP
Optional Gross Power - SAE J1995
3,100 HP
Rated Speed
1,800 r/min
Note
Power Ratings apply at 1,800 rpm when tested under the specified conditions for the specified standard.
Note
Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 99 kPa (29.61 Hg) dry barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F).
Note
No engine derating required up to 1829 m (6,000 ft) altitude.
Emissions
Equivalent to U.S. EPA Tier 2 emission standards.
Engine Model
Cat® C175-16
Gross Power - SAE J1995
3,500 HP
Bore
7 in
Stroke
9 in
Displacement
5,187 in³
Note (1)
Contact factory for high altitude configuration.
Emissions
Equivalent to U.S. EPA Tier 2 emission standards.
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)
Standard Gross Power - SAE J1995
3,500 HP
Note (4)
High altitude configurations available for altitudes up to 4267 m (14,000 ft) without derate.
Net Power - SAE J1349
3,405 HP
Optional Gross Power - SAE J1995 (Option 2)
2,750 HP
Emissions Rating
Fuel Optimized

Weights – approximate

Chassis Weight
417,187 lb
Body Weight
62,140 lb

Final Drives

Total Reduction Ratio
35:1
Total Reduction Ratio
35:01:00

Service Refill Capacities

Cooling System
211 gal
Crankcase
82 gal
Final Drives, each
67 gal
Fuel Tank
1,300 gal
Hydraulic System (includes tank)
385 gal
Hydraulic Tank
296 gal
Cooling System
211 gal (US)
Crankcase
82 gal (US)
Final Drive - Each
67 gal (US)
Fuel Tank
1,300 gal (US)
Hydraulic System - Including Tank
385 gal (US)
Hydraulic Tank
296 gal (US)
Note (1)
DEF Tank only available for EPA Tier 4 / EU Stage V engine option.
Diesel Exhaust Fluid Tank
100 gal (US)

Dimensions (Approximate)

Height to Top of ROPS
22 ft
Overall Length
51 ft
Wheelbase
22 ft
Rear Axle to Tail
16 ft
Ground Clearance
3 ft
Dump Clearance
3 ft
Loading Height – Empty
23 ft
Overall Height – Body Raised
48 ft
Centerline Front Tire Width
23 ft
Front Axle Clearance
3 ft
Overall Canopy Width
32 ft
Outside Body Width
30 ft
Inside Body Width
28 ft
Front Canopy Height
26 ft
Rear Axle Clearance
3 ft
Centerline Rear Dual Tire Width
19 ft
Overall Tire Width
29 ft
Note
Dimensions based on 1936 m3 (253 yd3) HE Body.
Canopy Width (without optional rock deflectors)
30 ft
Centerline Front Tire Width
23 ft
Dump Clearance
3 ft
Ground Clearance
3 ft
Height - Top of ROPS
22 ft
Loading Height - Empty
23 ft
Overall Height - Body Raised
48 ft
Overall Length
51 ft
Rear Axle - Tail
16 ft
Wheel Base
22 ft
Centerline of Rear Dual Tire Width
19 ft
Front Canopy Height
26 ft
Inside Body Width
28 ft
Note
Dimensions based on 193.6 m³ (253 yd³) HE Body.
Outside Body Width
30 ft
Overall Tire Width
29 ft
Rear Axle - Clearance
3 ft
Canopy Width (without optional rock deflectors)
30 ft

Weight Distributions – approximate

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

Sound

Sound Standard
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 Standard
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.
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.

ROPS

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

Steering

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

Tires

Standard Tires
53/80 R63.
Note
Production capabilities of the 794 AC truck are such that, under certain job conditions, TKPH (TMPH) capabilities could be exceeded and, therefore, limit production.
Note
Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection.
Standard Tires
53/80 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.
Standard Tires
53/80 R63.
Rims
36" x 63"

Weights - Approximate

Rated Gross Machine Weight
1,150,000 lb
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.
Body Weight
64,346 lb
Chassis Weight
426,237 lb
Note (4)
Tier 4 Final / Stage V chassis weight: 426312 lb (193372 kg)
Nominal Rated Payload
327 ton (US)

Braking System

Dynamic Retarding Power - Continuous
5,480 HP
Electric Retarding
Radial Grid Design
Front Wet Disc Brake Surface Area
20,378 in²
Rear - Wet Disc Brake Surface Area
30,750 in²
Standards
ISO 3450:2011
Service Brakes
Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Parking Brake
Four-corner, Multi-disc, Spring applied, Hydraulically Released
Load Brake
Rear service brakes

Capacity - HE Body - 100% fill factor

Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate
0 in
Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate
1 in
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate
0 in
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate
0 in
Heaped (SAE 2:1)
180-222 m³ (236-290 yd³)
Struck
108-133 m³ (142-175 yd³)
Note
Contact your local Cat dealer for body recommendations.

AC Drive System

Controls
IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Cooling System
Variable speed, hydraulically driven cooling system
Generator/Alternator
Brushless, engine mounted, dual bearing
Wheel Motor
High-torque AC induction, rear axle mounted
Total Reduction Ratio
35:01:00
Top Speed - Loaded
37 mile/h

Weight Distributions - Approximate

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

Body Hoists

Body Raise Time - High Idle
24 s
High Idle Body Lower Time - Float
20 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.
Pump Flow - High Idle (HAA at 1,800 rpm)
221 gal/min
Pump Flow - High Idle (LAA at 1,960 rpm)
240 gal/min
Relief Valve Setting - Raise
3,029 psi
Total Cycle Time
44 s

Transmission

Top Speed - Loaded
37 mile/h

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.

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.
  • 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
    • SOS℠ sample points (hydraulic, cooling, engine)
  • 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
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