794 AC

Heavy Equipment

794 AC

Nominal Payload Capacity
320 ton (US) / 291 t
Gross Power - SAE J1995
3500 HP / 2610 kW
Bore
6.9 in / 175 mm

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 291 tonnes (320 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.

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794 AC Product Brochure
Operating Specifications
Nominal Payload Capacity 320 ton (US) / 291 t
Steer Angle 39 °
Gross Machine Operating Weight (GMW) 1150000 lb / 521631 kg
Minimum Turning Radius 53 ft / 16.2 m
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.
Top Speed - Loaded 37 mile/h / 60 km/h
Engine
Engine Model Cat® C175-16
Gross Power - SAE J1995 3500 HP / 2610 kW
Bore 6.9 in / 175 mm
Stroke 8.7 in / 220 mm
Displacement 5187 in³ / 85 l
Note (1) Power ratings apply at 1,800 rpm when tested under the specified conditions for the specified standard.
Note (2) 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 (3) Optional 2,750 hp and 3,100 hp ratings. Optional emission ratings. Contact factory for available offerings.
Note (4) High altitude configurations available for altitudes up to 4267 m (14,000 ft) without derate.
Standard Gross Power - SAE J1995 3500 HP / 2610 kW
Final Drives
Total Reduction Ratio 35 to 1
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 Cat AC induction, rear axle mounted
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 / 840 l/min
Pump Flow - High Idle (LAA at 1,960 rpm) 240 gal/min / 910 l/min
Relief Valve Setting - Raise 3029 psi / 20884 kPa
Total Cycle Time 44 s
Braking System
Dynamic Retarding Power - Continuous 5480 HP / 4086 kW
Electric Retarding Radial Grid Design
Front Wet Disc Brake Surface Area 20378 in² / 131473 cm²
Rear - Wet Disc Brake Surface Area 30750 in² / 198388 cm²
Standards ISO 3450:2011
Capacity - HE Body - 100% fill factor
Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate 0.2 in / 5 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate 0.63 in / 16 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate 0.35 in / 9 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate 0.31 in / 8 mm
Heaped (SAE 2:1) 180-222 m³ (236-290 yd³)
Note Contact your local Cat dealer for body recommendations.
Struck 108-133 m³ (142-175 yd³)
Dimensions (Approximate)
Canopy Width (without optional rock deflectors) 29.75 ft / 9068 mm
Centerline Front Tire Width 23 ft / 7024 mm
Centerline of Rear Dual Tire Width 18.75 ft / 5727 mm
Dump Clearance 3 ft / 1555 mm
Front Axle Clearance 3.17 ft / 969 mm
Front Canopy Height 26.33 ft / 8024 mm
Ground Clearance 2.67 ft / 906 mm
Height - Top of ROPS 22.25 ft / 6779 mm
Inside Body Width 28.08 ft / 8560 mm
Loading Height - Empty 22.92 ft / 6995 mm
Note Dimensions based on 193.6 m³ (253 yd³) HE Body.
Outside Body Width 29.75 ft / 9062 mm
Overall Height - Body Raised 48.42 ft / 14747 mm
Overall Length 50.75 ft / 15463.5 mm
Overall Tire Width 28.67 ft / 8738 mm
Rear Axle - Clearance 3.08 ft / 934 mm
Rear Axle - Tail 15.5 ft / 4716 mm
Wheel Base 21.83 ft / 6644.5 mm
ROPS
FOPS Standards FOPS (Falling Object Protective Structure) meets ISO 3449:1992.
ROPS Standards ROPS (Rollover Protective Structure) meets ISO 3471:1994.
Service Refill Capacities
Cooling System 211 gal (US) / 799 l
Crankcase 82 gal (US) / 310 l
Final Drive - Each 67 gal (US) / 254 l
Fuel Tank 1300 gal (US) / 4922 l
Hydraulic System - Including Tank 385 gal (US) / 1458 l
Hydraulic Tank 296 gal (US) / 1121 l
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
Note Gross Machine Operating Weight is 521 631 kg (1,150,000 lb).
Steering Standards ISO 5010:2007
Tires
Note (1) 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 (2) Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection.
Standard Tires 53/80 R63.
Weight Distributions - Approximate
Front Axle - Empty 49 %
Front Axle - Loaded 33 %
Rear Axle - Empty 51 %
Rear Axle - Loaded 67 %
Weights - Approximate
Body Weight 62140 lb / 28186 kg
Chassis Weight 417187 lb / 189233 kg
Gross Machine Operating Weight 1150000 lb / 521631 kg
Note (1) Consult your tire manufacturer for maximum tire load.
Note (2) Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.
Note (3) Body weight varies depending on how body is equipped.

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
      • 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)
    • 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
    • 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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