794 AC Mining Truck
360° Exterior View
360° Interior View
At a Glance
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Overview
Designed and manufactured by Caterpillar, the 794 AC electric drive truck is single sourced from one manufacturer and supported by the best dealer network. The 794 AC is designed to:
- Deliver a true 297 tonnes (327 tons) capacity
- Deliver reliability and uptime
- Deliver easy serviceability
- Deliver low owning and operating cost
- Deliver operator confidence with four corner wet disc blended service brakes and traction control
The 794 AC is built to deliver to your bottom line.
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 | 3100HP |
| Optional Gross Power - SAE J1995 (Option 2) | 2750HP |
| Rated Speed | 1800r/min |
| Net Power - SAE J1349 | 3405HP |
| Emissions Rating | Fuel Optimized |
| Bore | 6.9in |
| Displacement | 5187in³ |
| Stroke | 8.7in |
| 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) |
Final Drives
+ -| Total Reduction Ratio | 35:01:00 |
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. |
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 | 35:01:00 |
| 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° |
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
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Programmable top speed
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Rear axle continuous lube/filtration
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Reverse shift inhibitor
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Directional shift management
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Neutral coast inhibitor
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Body-up shift inhibitor
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Neutral start inhibitor
Electrical
+ --
Alarm, backup
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Brushless alternator 150 amp charging
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Batteries – 12V (8) 90 amp hour
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Converter, 12V electrical
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Electrical system, 24V, 10, 15, 20 amp fuses and breakers
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Battery charge receptacle
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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
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12V DC power supply (1)
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Cup holder (2)
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Diagnostic connection port
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Dome courtesy light
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Entertainment radio ready:
– 20 amp switched/10 amp memory converter
– Speakers, and wiring harnesses -
Gauges/indicators
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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
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Storage space behind seat
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ROPS cab, insulated/sound suppressed
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Seat, operator, air suspension
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Seatbelt, operator, three points
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Seat, trainer, air suspension
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Seatbelt, trainer, two point
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Steering wheel, tilt, telescopic
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Tinted glass
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Window, electric powered, operator/passenger
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Wiper, windshield, intermittent control and washer
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Fixed access ladder
Fluids
+ --
Extended life coolant to –35° C (–30° F)
Other Standard Equipment
+ --
Traction control system
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Auxiliary “buddy” dumping quick connect
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Auxiliary steering quick connect (towing)
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Rotating component guards
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Fast fill fuel system (LH and RH side)
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Fast fill DEF system (RH side) - Tier 4 / Stage V only
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Fuel filter with water separator
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Ground level battery lockout
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Machine lockout
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Engine start lockout
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ECM cabinet lockout
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Ground level engine shut-down
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Rock ejectors (chain)
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Tow hooks and pin (front)
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Tow pin (rear) (empty truck only)
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Mudflaps
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Coolant level gauge (on radiator)
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Automatic lubrication system
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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 bodyCanopy extension
Body rock box
Side profile lighting
Central service
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