794 AC Mining Truck
794 AC Mining Truck
794 AC Mining Truck
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.

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Gross Power - SAE J1995 3500 HP
Standard Gross Power - SAE J1995 3500 HP
Engine Model Cat® C175-16
Optional Gross Power - SAE J1995 3100 HP
Optional Gross Power - SAE J1995 (Option 2) 2750 HP
Rated Speed 1800 r/min
Net Power - SAE J1349 3405 HP
Emissions Rating Fuel Optimized
Bore 6.9 in
Stroke 8.7 in
Displacement 5187 in³
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)
Nominal Rated Payload 327 ton (US)
Rated Gross Machine Weight 1150000 lb
Chassis Weight 426237 lb
Body Weight 64346 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.
Note (4) Tier 4 Final / Stage V chassis weight: 426312 lb (193372 kg)
Total Reduction Ratio 35:1
Total Reduction Ratio 35:1
Top Speed - Loaded 37 mile/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
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.
Service Brakes Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area 20378 in²
Rear - Wet Disc Brake Surface Area 30750 in²
Standards ISO 3450:2011
Parking Brake Four-corner, Multi-disc, Spring applied, Hydraulically Released
Load Brake Rear service brakes
Dynamic Retarding Power - Continuous 5480 HP
Front Axle - Empty 49 %
Rear Axle - Empty 51 %
Front Axle - Loaded 33 %
Rear Axle - Loaded 67 %
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 3029 psi
Body Raise Time - High Idle 24 s
High Idle Body Lower Time - Float 20 s
Total Cycle Time 44 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.
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 0.63 in
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate 0.35 in
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate 0.31 in
Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate 0.2 in
Note Contact your local Cat dealer for body recommendations.
Fuel Tank 1300 gal (US)
Cooling System 211 gal (US)
Crankcase 82 gal (US)
Final Drive - Each 67 gal (US)
Hydraulic Tank 296 gal (US)
Hydraulic System - Including Tank 385 gal (US)
Diesel Exhaust Fluid Tank 100 gal (US)
Note (1) DEF Tank only available for EPA Tier 4 / EU Stage V engine option.
ROPS Standards ROPS (Rollover Protective Structure) meets ISO 3471:1994.
FOPS Standards FOPS (Falling Object Protective Structure) meets ISO 3449:1992.
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 Standards ISO 5010:2007
Note Gross Machine Operating Weight is 521 631 kg (1,150,000 lb).
Steer Angle 39 °
Height - Top of ROPS 22.25 ft
Overall Length 50.75 ft
Wheel Base 21.83 ft
Rear Axle - Tail 15.5 ft
Ground Clearance 2.67 ft
Dump Clearance 3 ft
Loading Height - Empty 22.92 ft
Overall Height - Body Raised 48.42 ft
Centerline Front Tire Width 23 ft
Front Axle Clearance 3.17 ft
Canopy Width (without optional rock deflectors) 29.75 ft
Outside Body Width 29.75 ft
Inside Body Width 28.08 ft
Front Canopy Height 26.33 ft
Rear Axle - Clearance 3.08 ft
Centerline of Rear Dual Tire Width 18.75 ft
Overall Tire Width 28.67 ft
Overall Canopy Width 31.5 ft

— Wide field of view for greater visibility
— Integrated ROPS and FOPS
— Door sensor warning for park brake application
— Wide ladders, flat deck, toe kicks
— Integrated emergency brakes
— Anti-rollback(reverse shiftinhibitor)
— Stored energy dissipation at shutdown
— Traction control
— Optional powered access stair attachment

Standard 600 mm (24") wide ladders, flat deck, toe kicks, and optional power access stair attachment allows for easy and safe access and egress.

The Cat drive controls feature anti-roll back, traction controls, a park brake warning when exiting the cab and an automatic retarder that inspires operator confidence and error prevention.

The 794 AC features a ground level system lockout, engine lockout and propulsion lockout (in ECM cabinet), VIMS monitoring, and stored energy dissipation at shutdown. These features, and the excellent serviceability of the 794 AC, allow your technicians to perform repairs safely and quickly.

— Over 350,000 hours of field operation
— Over 5.5 million hours validation on the powertrain
— More than 40,000 hours on the highest-hour truck
— 5,300 C175 engines in operation with more than 63 million hours in machine applications

— Travels at a speed of 12.9 kph / 8 mph
— Achieves top speed of 60 kph / 37 mph
— Capable of traveling at a maximum 28% grade loaded

Boosts operator confidence:
— Goes faster longer
— Four corner wet disc brakes, with automatic slack adjusters
—Blended service brakes with retarding for traction control
— Slow speed blended retarding for positive stopping

The individual components, software, systems and engine that go inside a Cat truck have different purposes, but they have one very important thing in common: They are all manufactured by Caterpillar and supported by the Cat dealer network.

This integration ensures that the entire truck — from body to bumper, engine to electronics — can be fully optimized to deliver the lowest cost per ton.

The Cat engine, AC drive system, hydraulics and controls have been integrated to make the 794 easy to operate, providing excellent slow speed control within the service areas and superior throttle response on acceleration to move out of the loading or dump areas. Integration of the engine and powertrain delivers low operating costs through electronically combined powertrain components.
— 100% designed, validated and built by Caterpillar
— Full support of Cat dealer and parts network

No one knows more about how to get the most from a piece of Cat equipment than your local Cat dealer. This one-of-a-kind, on-the-ground support network delivers expert service, integrated solutions, after-sales support, fast and efficient parts fulfilment, world-class rebuild and remanufacturing capabilities, and more.

Cat dealers operate as nearly 200 local businesses — each one fully embedded in and committed to the geographic area it serves. That means you work with people you know, who know your business, and who respond on your timeframe.

Governments and regulatory agencies mandate that you establish and follow environmentally sound policies and practices as you meet the demand for mined materials. We're focused on doing our part to make sure our trucks help you meet those regulations.

We've designed the 794 AC to use less fuel, which reduces engine emissions and carbon footprint. The optional Tier 4 Final / Stage V engine reduces NOx and particulate matter. And we've reduced oil usage and filter change intervals.

The Cat AC drive is a high voltage system (2,600 volts) that operates at lower current than most competitive trucks. When combined with Cat's total integration and design of the truck and drive system, the result is higher efficiency, lower heat generation, smaller and lighter components, and longer component life.
— The Enhanced Engine Oil Filtration (EEOF) package, eliminates the need for an engine oil filter change and reduces oil usages.

Engines with advanced technology contribute to better fuel economy and decreased emissions.

The 794 AC has exceptionally low oil and lube consumption when compared to the competition. This provides a reduced impact on the environment, lower cost of ownership, and less maintenance time.

Cat trucks are designed to last over 100,000 hours, and many are going well beyond that. The frame, powertrain, engine and components are built to be rebuilt — using new, remanufactured or rebuilt parts and components — so you can take advantage of multiple lives of like-new performance at a fraction-of-new price.

Thanks to a significant speed advantage, the Cat 794 AC lets you move more over the course of a shift — or move the same amount of material with fewer trucks.
— Lower empty weight
— Higher-rated GMW
— Higher-rated field payload than competitors
— Faster speeds

Optimized horsepower performance 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.

While higher horsepower is available to boost productivity in deeper pits, an easy adjustment to a lower horsepower allows the 794 to better align with mixed fleets and keep fuel costs lower. This horsepower setting is configured by software and doesn't require an engine change. In addition, body choices allow you to select, design and customize options based on your application.

Whether you want to address a single challenge or make step changes in the overall safety, efficiency and productivity of your surface operation, Cat® MineStar™ has a solution for you. MineStar is the mining industry's most comprehensive and thoroughly integrated suite of technology offerings.

Cat Fleet helps you identify opportunities to improve truck efficiency in ways that reduce costs, boost productivity and add real value to your bottom line.
— Eliminate Queuing
— Optimize Shift Changes
— Reduce Fuel Stops

This autonomous hauling solution helps improve productivity, efficiency and profitability while reducing overall costs.

What if your trucks could respond to calls to the shovel, move into position, haul to dump points and even report for maintenance — all without an operator on board? That's what Cat Command for hauling enables.

But this autonomous Cat MineStar solution is more than just an operator-free system. It takes advantage of the most sophisticated technologies available to deliver a next-generation haulage solution — one that boosts safety, productivity and availability on busy mine sites, especially those in difficult or remote locations. With autonomous hauling, the future is here — and we're there to help you bring it to your operation.

With the MineStar Detect proximity detection system, you can equip your 794 with cameras to give your operators a better view of what's happening around their equipment — or combine cameras and radar into a true object detection system that automatically alerts operators to hazards.

You can even add satellite capabilities to provide proximity warnings and avoidance zones, seat-belt monitoring that encourages operators to buckle up, and in-cab systems that intervene when they detect fatigue or distraction.

When it comes to truck bodies, one size does not fit all. And when it comes to your Cat truck, Cat bodies are the best choice. We follow a dynamic approach to engineering — treating the body as part of a system rather than a static structure. Cat bodies are designed to be an integral part of the entire vehicle system, ensuring you achieve maximum chassis life.
— They're sized to meet payload requirements without compromise to vehicle balance, braking or control.
— From the design to the materials, manufacturing to shipping, the entire process meets Cat standards of quality and control.
— The Caterpillar 10/10/20 payload guidelines help achieve a balance of excellent payload with safe operation.

Integral to the truck the body is designed to fit with the chassis and work as part of the truck system. Each body is sized to meet the payload requirements without compromise to vehicle balance, braking or control.

The body is sized and configured to meet the specific needs dictated by fragmentation, abrasion, cohesion, and the loading tool to maximize the payload capability of the truck.

  • Curved floor, front, and canopy strengthens entire body as a structure.
  • Strength of base plates allows minimal wear package and low operating weight.
  • Joint isolation system reinforces welded areas and exploits high strength main plates.
  • Runners transfer weight to the truck frame.

— Open engine access and platforms for service of engine, generator and inverter
— 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 for ease of service
— Modular component design that allows for easy removal and installation
— AC grid blower motor designed for longer life and less maintenance
— Pressurized and filtered AC drive inverter that requires less maintenance
— Sealed & pressurized cabinets, which require no cleaning
— 1,000-hour oil change interval with Tier 4 configuration