US
Metric

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 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.

Operating Specifications

Nominal Payload Capacity
320.00 tons
291.00 tonnes
Top Speed – Loaded
37.00 mph
60.00 km/h
Steer Angle
39.00 Degrees
39.00 Degrees
Gross Machine Operating Weight (GMW)
1150000.00 lb
521631.00 kg
Minimum Turning Radius
53.00 ft
16.20 m

Engine

Engine Model
Cat® C175-16
Gross Power - SAE J1995
3500.00 hp
2610.00 kW
Bore
6.90 in
175.00 mm
Stroke
8.70 in
220.00 mm
Displacement
5187.00 in3
85.00 L
Standard Gross Power - SAE J1995*
3500.00 HP
2610.00 kW
Note
* Contact factory for low HP, lower emissions tier configurations and high altitude configurations.

Weights – approximate

Chassis Weight
417187.00 lb
189233.00 kg
Body Weight
62140.00 lb
28186.00 kg

Weights - Approximate

Gross Machine Operating Weight
1150000.00 lb
521631.00 kg

Final Drives

Total Reduction Ratio
35:1

Service Refill Capacities

Cooling System
211.00 gal
799.00 L
Crankcase
82.00 gal
310.00 L
Final Drives, each
67.00 gal
254.00 L
Fuel Tank
1300.00 gal
4922.00 L
Hydraulic System (includes tank)
385.00 gal
1458.00 L
Hydraulic Tank
296.00 gal
1121.00 L

Braking System

Dynamic Retarding Power - Continuous
5480.00 HP
4086.00 kW
Electric Retarding
Radial Grid Design
Front Wet Disc Brake Surface Area
20378.00 in²
131473.00 cm²
Rear - Wet Disc Brake Surface Area
30750.00 in²
198388.00 cm²
Standards
ISO 3450:2011

Dimensions (Approximate)

Height to Top of ROPS
22.25 ft
6779.00 mm
Overall Length
50.75 ft
15463.50 mm
Wheelbase
21.83 ft
6644.50 mm
Rear Axle to Tail
15.50 ft
4716.00 mm
Ground Clearance
2.67 ft
906.00 mm
Dump Clearance
3.00 ft
1555.00 mm
Loading Height – Empty
22.92 ft
6995.00 mm
Overall Height – Body Raised
48.42 ft
14747.00 mm
Centerline Front Tire Width
23.00 ft
7024.00 mm
Front Axle Clearance
3.17 ft
969.00 mm

Weight Distributions – approximate

Front Axle – Loaded
33.00 %
33.00 %
Rear Axle – Loaded
67.00 %
67.00 %
Front Axle – Empty
49.00 %
49.00 %
Rear Axle – Empty
51.00 %
51.00 %

Tires

Standard Tires
53/80 R63.

Sound

Sound Standard
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 Standard
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.

Capacity - HE Body - 100% fill factor

Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate
0.20 in
5.00 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate
0.63 in
16.00 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate
0.35 in
9.00 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate
0.31 in
8.00 mm
Heaped (SAE 2:1)
180-222 m³ (236-290 yd³)
Struck
108-133 m³ (142-175 yd³)

Steering

Steering Standards
ISO 5010:2007

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

ROPS

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

Engine

Note
Power Ratings apply at 1,800 rpm when tested under the specified conditions for the specified standard.
Note
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
No engine derating required up to 1829 m (6,000 ft) altitude.
Emissions
Equivalent to U.S. EPA Tier 2 emission standards.

Weights - Approximate

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.

Operating Specifications

Note
Payload assumes no debris, no extra options or attachments.
Note
Refer to the Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.

Tires

Note
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
Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection.

Capacity - HE Body - 100% fill factor

Note
Contact your local Cat dealer for body recommendations.

Steering

Note
Gross Machine Operating Weight is 521 631 kg (1,150,000 lb).

Dimensions (Approximate)

Overall Canopy Width
32.00 ft
9763.00 mm
Outside Body Width
29.75 ft
9062.00 mm
Inside Body Width
28.08 ft
8560.00 mm
Front Canopy Height
26.33 ft
8024.00 mm
Rear Axle Clearance
3.08 ft
934.00 mm
Centerline Rear Dual Tire Width
18.75 ft
5727.00 mm
Overall Tire Width
28.67 ft
8738.00 mm
Note
Dimensions based on 1936 m3 (253 yd3) HE Body.

Engine

Engine Model
Cat® C175-16
Gross Power - SAE J1995
3500.00 HP
2610.00 kW
Bore
6.90 in
175.00 mm
Stroke
8.70 in
220.00 mm
Displacement
5187.00 in³
85.00 l
Note (1)
Power ratings apply at 1,800 rpm when tested under the specified conditions for the specified standard.

Weights - Approximate

Body Weight
62140.00 lb
28186.00 kg
Chassis Weight
417187.00 lb
189233.00 kg

Operating Specifications

Nominal Payload Capacity
320.00 ton (US)
291.00 t
Steer Angle
39.00 °
39.00 °
Top Speed - Loaded
37.00 mile/h
60.00 km/h

Final Drives

Total Reduction Ratio
35 to 1

Weight Distributions - Approximate

Front Axle - Empty
49.00 %
49.00 %
Front Axle - Loaded
33.00 %
33.00 %
Rear Axle - Empty
51.00 %
51.00 %
Rear Axle - Loaded
67.00 %
67.00 %

Service Refill Capacities

Cooling System
211.00 gal (US)
799.00 l
Crankcase
82.00 gal (US)
310.00 l
Final Drive - Each
67.00 gal (US)
254.00 l
Fuel Tank
1300.00 gal (US)
4922.00 l
Hydraulic System - Including Tank
385.00 gal (US)
1458.00 l
Hydraulic Tank
296.00 gal (US)
1121.00 l

Tires

Standard Tires
53/80 R63.

Dimensions (Approximate)

Centerline Front Tire Width
23.00 ft
7024.00 mm
Dump Clearance
3.00 ft
1555.00 mm
Ground Clearance
2.67 ft
906.00 mm
Height - Top of ROPS
22.25 ft
6779.00 mm
Loading Height - Empty
22.92 ft
6995.00 mm
Overall Height - Body Raised
48.42 ft
14747.00 mm
Overall Length
50.75 ft
15463.50 mm
Rear Axle - Tail
15.50 ft
4716.00 mm
Wheel Base
21.83 ft
6644.50 mm

ROPS

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

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

Dimensions (Approximate)

Centerline of Rear Dual Tire Width
18.75 ft
5727.00 mm
Front Canopy Height
26.33 ft
8024.00 mm
Inside Body Width
28.08 ft
8560.00 mm
Note
Dimensions based on 193.6 m³ (253 yd³) HE Body.
Outside Body Width
29.75 ft
9062.00 mm
Overall Tire Width
28.67 ft
8738.00 mm
Rear Axle - Clearance
3.08 ft
934.00 mm

Engine

Emissions
Equivalent to U.S. EPA Tier 2 emission standards.
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.

Operating Specifications

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.

Steering

Note
Gross Machine Operating Weight is 521 631 kg (1,150,000 lb).

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.

Dimensions (Approximate)

Canopy Width (without optional rock deflectors)
29.75 ft
9068.00 mm
Note
Dimensions based on 193.6 m³ (253 yd³) HE Body.

Engine

Standard Gross Power - SAE J1995
3500.00 HP
2610.00 kW

Tires

Standard Tires
53/80 R63.
Standard Tires
53/80 R63.

Body Hoists

Body Raise Time - High Idle
24.00 s
24.00 s
High Idle Body Lower Time - Float
20.00 s
20.00 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)
221.00 gal/min
840.00 l/min
Pump Flow - High Idle (LAA at 1,960 rpm)
240.00 gal/min
910.00 l/min
Relief Valve Setting - Raise
3029.00 psi
20884.00 kPa
Total Cycle Time
44.00 s
44.00 s
Features

Power Train – Cat AC Electric Drive: Delivers you more power to the ground for greater productivity.

Power Train – Engine: Delivers power, reliability, and efficiency for your most demanding mining applications.

Engine/Power Train Integration – Delivers low operating costs through electronically combined power train components.

Cat Braking System – Delivers operator’s confidence, to maximize your productivity.

Structures – Cat structures are known for being the best in the industry for durability and long life.

Truck Body Systems – Delivers a true 291 tonnes (320 tons) and provides rugged performance and reliability.

Monitoring System – Keeping your production at peak levels.

Operator’s Station – Ergonomically designed for all-day comfort, control and productivity.

Customer Support – The most experienced dealer network in the world.

Serviceability – Delivers easy service for more uptime and productivity.

Safety – Designed with safety as the first priority.

Sustainability – Reduced maintenance time results in more productivity.

Sales Features

Power Train – Cat AC Electric Drive

Delivers you more power to the ground for greater productivity.

Power Train – Engine

Delivers power, reliability, and efficiency for your most demanding mining applications.

Engine/Power Train Integration

Delivers low operating costs through electronically combined power train components.

Cat Braking System

Delivers operator’s confidence, to maximize your productivity.

Structures

Cat structures are known for being the best in the industry for durability and long life.

Truck Body Systems

Delivers a true 291 tonnes (320 tons) and provides rugged performance and reliability.

Monitoring System

Keeping your production at peak levels.

Operator’s Station

Ergonomically designed for all-day comfort, control and productivity.

Customer Support

The most experienced dealer network in the world.

Serviceability

Delivers easy service for more uptime and productivity.

Safety

Designed with safety as the first priority.

Sustainability

Reduced maintenance time results in more productivity.
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