794 AC Mining Truck

794 AC Mining Truck

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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.

Engine

Engine Model
Cat® C175-16
Gross Power - SAE J1995
3500 hp
Bore
6.9 in
Stroke
8.7 in
Displacement
5187 in3
Standard Gross Power – SAE J1995*
3500 hp
Note
* Contact factory for low HP, lower emissions tier configurations and high altitude configurations.
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

Chassis Weight
417187 lb
Body Weight
62140 lb
Gross Machine Operating Weight
1150000 lb
Note
Consult your tire manufacturer for maximum tire load.
Note
Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.
Note
Body weight varies depending on how body is equipped.

Operating Specifications

Nominal Payload Capacity
320 tons
Steer Angle
39 Degrees
Top Speed – Loaded
37 mph
Gross Machine Operating Weight (GMW)
1150000 lb
Minimum Turning Radius
53 ft
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.

Final Drives

Total Reduction Ratio
35:1

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

Braking System

Dynamic Retarding Power – Continuous
5480 hp
Electric Retarding
Radial Grid Design
Front Wet Disc Brake Surface Area
20378 in2
Rear Wet Disc Brake Surface Area
30750 in2
Standards
ISO 3450:2011

Weight Distributions – approximate

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

Service Refill Capacities

Cooling System
211 gal
Crankcase
82 gal
Final Drives, each
67 gal
Fuel Tank
1300 gal
Hydraulic System (includes tank)
385 gal
Hydraulic Tank
296 gal

Tires

Standard Tires
53/80 R63.
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.

Dimensions (Approximate)

Height to Top of ROPS
22.25 ft
Overall Length
50.75 ft
Wheelbase
21.83 ft
Rear Axle to Tail
15.50 ft
Ground Clearance
2.67 ft
Dump Clearance
3.00 ft
Loading Height – Empty
22.92 ft
Overall Height – Body Raised
48.42 ft
Centerline Front Tire Width
23.00 ft
Front Axle Clearance
3.17 ft
Overall Canopy Width
32.00 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 Rear Dual Tire Width
18.75 ft
Overall Tire Width
28.67 ft
Note
Dimensions based on 1936 m3 (253 yd3) HE Body.

ROPS

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

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.

Steering

Steering Standards
ISO 5010:2007
Note
Gross Machine Operating Weight is 521 631 kg (1,150,000 lb).

Capacity – HE Body – 100% fill factor

Dump Body Plate Thickness Varies Depending on Body Selection – Canopy Plate
0.20 in
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
Heaped (SAE 2:1)
180-222 m3 (236-290 yd3)
Struck
108-133 m3 (142-175 yd3)
Note
Contact your local Cat dealer for body recommendations.