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Off-Highway Trucks

794 AC

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.

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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.

Engine

UNITS:

Metric

Imperial

Gross Power - SAE J1995	2610 kW	3500 hp
Standard Gross Power - SAE J1995	2610 kW	3500 hp
Engine Model	Cat® C175-16	Cat® C175-16
Optional Gross Power - SAE J1995	2312 kW	3100 hp
Optional Gross Power - SAE J1995 (Option 2)	2051 kW	2750 hp
Rated Speed	1800 r/min	1800 r/min
Net Power - SAE J1349	2539 kW	3405 hp
Emissions Rating	Fuel Optimized	Fuel Optimized
Bore	175 mm	6.9 in
Stroke	220 mm	8.7 in
Displacement	85 l	5187 in³
Note (1)	Contact factory for high altitude configuration.	Contact factory for high altitude configuration.
Note (2)	Tier 4 / EU Stage V option available for regions that require these emissions standards.	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)	Tier 4 / EU Stage V engine option Net Power - SAE J1349: 3434 HP (2561 kW)

Weights - Approximate

Nominal Rated Payload	297 t	327 ton (US)
Rated Gross Machine Weight	521631 kg	1150000 lb
Chassis Weight	193338 kg	426237 lb
Body Weight	29187 kg	64346 lb
Note (1)	Consult your tire manufacturer for maximum tire load.	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	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.	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)	Tier 4 Final / Stage V chassis weight: 426312 lb (193372 kg)

Final Drives

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

AC Drive System

Total Reduction Ratio	35:01:00	35:01:00
Top Speed - Loaded	60 km/h	37 mile/h
Generator/Alternator	Brushless, engine mounted, dual bearing	Brushless, engine mounted, dual bearing
Controls	IGBT Inverter Technology, air cooled, pressurized cabinet with filtration	IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Wheel Motor	High-torque AC induction, rear axle mounted	High-torque AC induction, rear axle mounted
Cooling System	Variable speed, hydraulically driven cooling system	Variable speed, hydraulically driven cooling system

Tires

Standard Tires	53/80 R63	53/80 R63
Rims	36" x 63"	36" x 63"
Note (1)	Quick Change Rims optional.	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.	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	Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area	131473 cm²	20378 in²
Rear - Wet Disc Brake Surface Area	198388 cm²	30750 in²
Standards	ISO 3450:2011	ISO 3450:2011
Parking Brake	Four-corner, Multi-disc, Spring applied, Hydraulically Released	Four-corner, Multi-disc, Spring applied, Hydraulically Released
Load Brake	Rear service brakes	Rear service brakes
Dynamic Retarding Power - Continuous	4086 kW	5480 hp

Weight Distributions - Approximate

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

Body Hoists

Pump Flow - High Idle (HAA at 1,800 rpm)	840 l/min	221 gal/min
Pump Flow - High Idle (LAA at 1,960 rpm)	910 l/min	240 gal/min
Relief Valve Setting - Raise	20884 kPa	3029 psi
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.	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.	Power raise in both stages; power down in both stages possible.
Note (3)	Automatic body-lower modulation reduces impact on frame.	Automatic body-lower modulation reduces impact on frame.

Capacity - HE Body - 100% fill factor

Struck	108-133 m³ (142-175 yd³)	108-133 m³ (142-175 yd³)
Heaped (SAE 2:1)	180-222 m³ (236-290 yd³)	180-222 m³ (236-290 yd³)
Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate	16 mm	0.63 in
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate	9 mm	0.35 in
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate	8 mm	0.31 in
Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate	5 mm	0.2 in
Note	Contact your local Cat dealer for body recommendations.	Contact your local Cat dealer for body recommendations.

Service Refill Capacities

Fuel Tank	4922 l	1300 gal (US)
Cooling System	799 l	211 gal (US)
Crankcase	310 l	82 gal (US)
Final Drive - Each	254 l	67 gal (US)
Hydraulic Tank	1121 l	296 gal (US)
Hydraulic System - Including Tank	1458 l	385 gal (US)
Diesel Exhaust Fluid Tank	378 l	100 gal (US)
Note (1)	DEF Tank only available for EPA Tier 4 / EU Stage V engine option.	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.	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.	Falling Object Protective Structure (FOPS) meets ISO 3449:2005 Level II for operator and ISO 13459:2012 Level II for trainer.

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

Dimensions (Approximate)

Height - Top of ROPS	6779 mm	22.25 ft
Overall Length	15463.5 mm	50.75 ft
Wheel Base	6644.5 mm	21.83 ft
Rear Axle - Tail	4716 mm	15.5 ft
Ground Clearance	906 mm	2.67 ft
Dump Clearance	1555 mm	3 ft
Loading Height - Empty	6995 mm	22.92 ft
Overall Height - Body Raised	14747 mm	48.42 ft
Centerline Front Tire Width	7024 mm	23 ft
Front Axle Clearance	969 mm	3.17 ft
Canopy Width (without optional rock deflectors)	9068 mm	29.75 ft
Outside Body Width	9062 mm	29.75 ft
Inside Body Width	8560 mm	28.08 ft
Front Canopy Height	8024 mm	26.33 ft
Rear Axle - Clearance	934 mm	3.08 ft
Centerline of Rear Dual Tire Width	5727 mm	18.75 ft
Overall Tire Width	8738 mm	28.67 ft
Overall Canopy Width	9611 mm	31.5 ft

Features

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)

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
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Downloads

794 AC Tech Specs Download

794 AC Product Brochure Download

Brochure - Electric Drive Trucks Updates Download

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