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794 AC Mining Truck

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Overview

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. 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. 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.

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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.

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.

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.

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.

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.

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.

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.

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%.

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.

Dimensions (Approximate)

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

Braking System

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

Tires

Rims: 36" x 63"
Note (2): Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.
Note (1): Quick Change Rims optional.
Standard Tires: 53/80 R63

AC Drive System

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

Transmission

Top Speed - Loaded: 37mile/h

Steering

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

Service Refill Capacities

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

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.

ROPS

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

Body Hoists

Note (3): Automatic body-lower modulation reduces impact on frame.
Note (2): Power raise in both stages; power down in both stages possible.
Note (1): Twin, two-stage hydraulic cylinders mounted inside main frame; double-acting cylinders in both stages.
Total Cycle Time: 44s
High Idle Body Lower Time - Float: 20s
Body Raise Time - High Idle: 24s
Relief Valve Setting - Raise: 3029psi
Pump Flow - High Idle (LAA at 1,960 rpm): 240gal/min
Pump Flow - High Idle (HAA at 1,800 rpm): 221gal/min

Capacity - HE Body - 100% fill factor

Note: Contact your local Cat dealer for body recommendations.
Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate: 0.2in
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate: 0.31in
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate: 0.35in
Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate: 0.63in
Heaped (SAE 2:1): 180-222 m³ (236-290 yd³)
Struck: 108-133 m³ (142-175 yd³)

Weight Distributions - Approximate

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

Final Drives

Total Reduction Ratio: 35:01:00

Operating Specifications

Note (2): Refer to the Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.
Note (1): Payload assumes no debris, no extra options or attachments.
Gross Machine Operating Weight (GMW): 1150000lb
Minimum Turning Radius: 53ft
Steer Angle: 39°
Top Speed - Loaded: 37mile/h
Nominal Payload Capacity: 327ton (US)

Weights - Approximate

Note (3): Refer to Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.
Note (2): Chassis weight with full fuel and fluids, standard & mandatory attachments, hoist, body mounting group, rims, and tires
Note (1): Consult your tire manufacturer for maximum tire load.
Body Weight: 64346lb
Chassis Weight: 426237lb
Rated Gross Machine Weight: 1150000lb
Note (4): Tier 4 Final / Stage V chassis weight: 426312 lb (193372 kg)
Nominal Rated Payload: 327ton (US)

Engine

Note (1): Contact factory for high altitude configuration.
Displacement: 5187in³
Bore: 6.9in
Stroke: 8.7in
Emissions Rating: Fuel Optimized
Net Power - SAE J1349: 3405HP
Rated Speed: 1800r/min
Optional Gross Power - SAE J1995 (Option 2): 2750HP
Optional Gross Power - SAE J1995: 3100HP
Standard Gross Power - SAE J1995: 3500HP
Gross Power - SAE J1995: 3500HP
Engine Model: Cat® C175-16
Note (3): Tier 4 / EU Stage V engine option Net Power - SAE J1349: 3434 HP (2561 kW)
Note (2): Tier 4 / EU Stage V option available for regions that require these emissions standards.

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.

Standard/Optional Features

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
- SOS℠ sample points (hydraulic, cooling, engine)

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