Camion 794ac
Camion 794ac
CAMION MINERO
Contenido
100% Caterpillar
Designed and manufactured by Caterpillar, the 794 AC is a
291 tonnes (320 tons) AC electric drive truck that is single sourced
from one manufacturer and supported with the best dealer
network in the industry. The 794 AC drive system works seamlessly
with
the C175-16 engine and offers exceptional safety, serviceability
and performance.
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Cat AC Electric Drive in Retard
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During retarding the traction/wheel motors act as generators
and power is fed back through the DC link. The power is fed to 2
the contactor and chopper circuits and then exhausted through
the radial grid. An AC fan blows air across the grid to dissipate the
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power and control retarding speed.
Traction Alternator 4
No shimming or radial alignment required with the close coupled,
dual bearing alternator, resulting in decreased install time.
The excitation system is brushless which has longer maintenance
intervals than brush type systems.
Inverter
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Cat ECMs and software work with the Mitsubishi Electric IGBT
Phase Modules to control the rimpull, direction and speed of the
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truck. Mitsubishi Electric IGBT technology is the proven leader
for AC drive systems.
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Power Train – Engine
Delivers power, reliability, and efficiency
for your most demanding mining applications.
Engine Block
The C175-16 engine block is comprised of
a high tensile strength ferrite ductile cast
iron alloy. This design offers increased
resistance to stress cracking and offers
support to the cylinder liners, allowing for
increased head gasket sealing capability.
Serviceability
The design of the C175-16 enhances
serviceability. The inlet manifolds and
turbochargers are located outside of the
engine’s V, giving the service
technicians more space to work on top
of the engine and within the engine bay.
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Engine/Power Train Integration
Delivers low operating costs through
electronically combined power train components.
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Cat Braking System
Delivers operator’s confidence, to maximize your productivity.
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Suspension System
The design of the suspension system utilizes Nitrogen/Oil suspension
cylinders that feature pin to pin mounting to allow for access and
change out of components without having to remove the tires.
• Durable Design – Double shear clevis attachment both top and
bottom allows for easy removal and installation of suspension. The
Nitrogen/ Oil suspension cylinders reduce input loads into the
structure for improved fatigue life and better ride.
Structures
Cat structures are known for being the best in the industry
for durability and long life.
Straight Rail Frame Integrated ROPS Cab Single Beam Front Axle
The 794 AC utilizes a straight rail Designed to maximize the operator The single beam front axle is designed
design. The straight rail design space by deforming the support for load sharing on the beam, resulting
eliminates bends and breaks, which structure rather than compromise the in flatter turns and sharing of tire loading
occur at stress concentrations. operator compartment. The transverse for better tire life. This lower structure
• Box Section Construction – The box mounting beams absorb energy by absorbs the road undulations, giving
section construction utilizes Caterpillar deflecting around established pivot a better ride and decreasing operator
proprietary steel specification, which points, maintaining the integrity of the fatigue levels.
has very low sulfur content and provides operator compartment.
excellent welding characteristics, plus
outstanding durability.
• Deep Section Main Rails – Deep section
main rails, in critical areas of the frame,
lower the stress levels resulting in an
increased frame life.
• Tubular Center Cross Beam –
The tubular center cross beam with
hoist cylinder and axle box attachment
provides robust performance. The axle
box attachment is integrated into the
cross member and the bearing and pin
are replaceable.
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Truck Body Systems
Delivers a true 291 tonnes (320 tons) and
provides rugged performance and reliability.
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Monitoring System
Keeping your production at peak levels.
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Operator’s Station
Ergonomically designed for all-day comfort,
control and productivity.
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Operator Environment
The 794 AC cab can accommodate two full size
reclining seats, while providing ample storage
space behind the seats.
Ergonomic Layout
To minimize operator fatigue and maximize productivity,
5 the operator station is ergonomically designed for total
machine control in a comfortable, productive, and safe
environment. Controls, levers, switches and gauges are
positioned for ease of use.
8 Viewing Area
Designed for excellent all-around visibility and clear
sight lines to the haul road, the large viewing area
offers exceptional visibility, allowing the operator to
maneuver with confidence for high productivity. The
operator environment was designed with curved front
glass to provide a 191-degree view. The support pillars
have
been moved further back to provide a more unobstructed
front view. Deck compartments have been positioned to
minimize impact on the side field of view.
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Customer Support
The most experienced dealer network in the world.
Product Support
Caterpillar supports the 794 AC with a worldwide network of parts distribution, dealer service centers and technical training
facilities. Our global dealer network is ready to meet your support needs around the clock and around the world.
Service Support
Cat dealers offer a wide range of service plans to help maximize your uptime and return on your investment, including:
• Preventive Maintenance Programs
• Diagnostic Services such as Scheduled Oil Sampling and Technical Analysis
• Rebuild and Remanufactured Product Options
• Customer Support Agreements
Application Awareness
Application and site-specific factors such as material density, loading practices, payload, speed, grade and haul road design
and maintenance influence the cost to operate and maintain your haulage fleet. Your Cat dealer can provide help in understanding
the effects application factors and operating practices have on maintenance and operating costs. They also offer training to help
operators improve productivity, decrease downtime, reduce operating costs and enhance safety.
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Serviceability
Delivers easy service for more uptime and productivity.
Modular Design
Major components can be serviced individually with
minimal removal and installation time. Work platforms and
step/stairs are located in key service areas. The close
coupled, dual bearing, traction alternator is separate from
the engine and can be removed without removing the body
– traction/wheel motors are separate from final drives.
Servicing Ease
• Open engine access with service platforms makes
maintenance easy. Traction alternator and optional
inverter platforms allow for easier inspections,
troubleshooting,
and component change outs.
• Hydraulic cabinet shows critical pressures for all
key systems in one centralized location.
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Safety
Designed with safety as the first priority.
Controls
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.
Isolation
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.
Access/Egress
Standard 600 mm (24") wide ladders, flat
deck, toe kicks, and optional power
access stair attachment allows for easy
and safe access and egress.
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Sustainability
Reduced maintenance time results in more productivity.
Sustainability Features
The 794 AC Mining Truck offers continuous rear axle filtration and extended maintenance
intervals which aid in decreasing the amount of waste contributed to our environment.
Remanufacturing Options
794 AC trucks are designed to be rebuilt and deliver a long life, many 794 AC trucks have
logged over 100,000 hours of frame life. Components are designed to be remanufactured
for multiple service lives.
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794 AC Mining Truck Specifications
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794 AC Mining Truck Specifications
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794 AC Mining Truck Specifications
Dimensions
All dimensions are approximate.
Shown with 193.6 m3 (253 yd3) HE Body.
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3 4
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794 AC Mining Truck Specifications
Gradeability/Speed/Rimpull*
To determine gradeability performance: Read from gross weight down to the percent of total resistance. Total resistance
equals actual percent grade plus 1% for each 10 kg/t (20 lb/ton) of rolling resistance. Usable rimpull will depend upon traction
available and weight on drive wheels.
GROSS WEIGHT
0 100 200 300 400 500 600 700 800 900 1000 1100 lb × 1000
lb × kg ×
1000 1000 0 50 100 150 200 250 300 350 400 450 500 kg × 1000
150
315
140
E L
285 130 30%
120 25%
255
110
195
80
165
15%
70
135 60
105 50 10%
40
75
30
5%
45 20
10
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10 20 30 40 50 60 70 km/h
5 10 15 20 25 30 35 40 45 mph
SPEED
KEY
E – Empty Operating Weight 217 419 kg (479,327 lb)
L – Target GMW 521 631 kg (1,150,000 lb)
*At sea level, 30° C (86° F). Contact factory for performance estimates based upon site specific temperatures and altitudes.
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794 AC Mining Truck Specifications
Retarding Performance*
To determine retarding performance: Read from gross weight down to the percent effective grade. Effective grade equals % grade
minus 1% for each 10 kg/t (20 lb/ton) of rolling resistance. The following chart is based on 30° C (86° F) ambient temperature, at sea
level, with 53/80 R63 tires.
GROSS WEIGHT
0 100 200 300 400 500 600 700 800 900 1000 1100 lb × 1000
0 50 100 150 200 250 300 350 400 450 500 kg × 1000
E L
30%
25%
15%
10%
5%
0 10 20 30 40 50 60 70 km/h
5 10 15 20 25 30 35 40 45 mph
SPEED
CONTINUOUS GRADE LENGTH
KEY
E – Empty Operating Weight 217 419 kg (479,327 lb)
L – Target GMW 521 631 kg (1,150,000 lb)
*At sea level, 30° C (86° F). Contact factory for performance estimates based upon site specific temperatures and altitudes.
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794 AC Standard Equipment
Standard Equipment
Standard equipment may vary. Consult your Cat dealer for details.
POWER TRAIN OPERATOR ENVIRONMENT FLUIDS
• C175-16 Diesel Engine • Air conditioner • Extended life coolant to –35° C (–30° F)
– Turbocharging (4)/aftercooled • 12V DC power supply (1)
– Air to air after cooler (ATAAC) • Cup holder (2) OTHER STANDARD EQUIPMENT
– Air cleaner (4) with precleaner • Diagnostic connection port • Traction control system
– Elevated low idle control • Dome courtesy light • Auxiliary “buddy” dumping quick connect
– Multi-point oil pressure sensing • Entertainment radio ready: • Auxiliary steering quick connect (towing)
– Pre-lubrication/engine – 20 amp switched/10 amp memory converter • Rotating component guards
• Braking system: – Speakers, and wiring harnesses • Fast fill fuel system (LH and RH side)
– Brake release towing • Gauges/indicators • Fuel filter with water separator
– Oil-cooled, multi-disc (front and rear) • Gauge panel: • Ground level battery lockout
(service, retarding, parking, secondary) • Hydraulic oil temperature • Machine lockout
– Automatic Retarder Control • Engine coolant temperature • Engine start lockout
– Electric dynamic retarding • Fuel level • ECM cabinet lockout
with blended low speed
• Electric engine control fault indicator • Ground level engine shut-down
– Extended life brake disc material
• Electric hour meter • Rock ejectors (chain)
• Cat AC drive train:
• Speedometer • Tow hooks and pin (front)
– IGBT controlled AC induction motors
• Tachometer • Tow pin (rear) (empty truck only)
– AC generator
• VIMS message center advisor • Mudflaps
– AC cooled radial grid
• Heater/defroster • Coolant level gauge (on radiator)
• Body-up reverse neutralizer
• Storage space behind seat • Automatic lubrication system
• Programmable top speed
• ROPS cab, insulated/sound suppressed • S·O·S sample points
• Rear axle continuous lube/filtration (hydraulic, cooling, engine)
• Seat, operator, air suspension
• Reverse shift inhibitor
• Seatbelt, operator, three points
• Directional shift management
• Seat, trainer, air suspension
• Neutral coast inhibitor
• Seatbelt, trainer, two point
• Body-up shift inhibitor
• Steering wheel, tilt, telescopic
• Neutral start inhibitor
• Tinted glass
• Window, electric powered,
ELECTRICAL operator/passenger
• Alarm, backup • Wiper, windshield, intermittent control
• Brushless alternator 150 amp charging and washer
• Batteries – 12V (8) 90 amp hour • Fixed access ladder
• 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
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794 AC Optional Equipment
Optional Equipment
Optional equipment may vary. Consult your Cat dealer for details.
• 2050 kW (2,750 hp) and 2312 kW (3,100 hp) • ANSI and ISO service instructions • High efficiency dump body
options available • Retarding indicator light – 1543 kg/m3 (2,600 lb/yd3) density body
• HAA arrangements available • Cab pedestal for additional display – 1721 kg/m3 (2,900 lb/yd3) density body
• Throttle lock • Radio/CD player – 1839 kg/m3 (3,100 lb/yd3) density body
• Timer, engine shutdown • Front bumper center tow attachment – 2076 kg/m3 (3,500 lb/yd3) density body
• Body heat exhaust • Brake wear indicator tool • Canopy extension
• Gel batteries (8) • Coolant –50° C (–58° F) • Body rock box
• High Intensity Discharge (HID) • HE dump body rock box liner • Side profile lighting
lighting package
• HE dump body canopy rock deflectors • Central service
• LED lighting package
• Heated mirrors (LH and RH) • Language monitors – English, Spanish,
• Fog lights Italian, Portuguese, Dutch, Norwegian,
• Rear axle oil cooler
• LED work lights Swedish, Estonian, Latin, Lithuanian,
• Standard accumulators and Australia/
• English or Metric gauges Canada certified accumulators Slovakian, Slovenian, Greek, Romanian,
• Payload, digital display • Hot start, for cold weather Russian, Polish, Czech, Hungarian,
• Powered access ladder Icelandic, Finnish, Danish, Thai,
• Diesel fuel warmer
• Inverter platform Indonesian, Vietnam, Malaysian, Chinese
• Wheel chocks (ANSI or ISO)
• Fast fill fuel system (front and right) • Portable fire extinguisher
• Rims: Six (6) position and quick change • Murphy gauge
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Notes
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Notes
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Notes
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For more complete information on Cat products, dealer services, and industry solutions, visit us on the web AEHQ7160-06 (08-2019)
at www.cat.com Replaces AEHQ7160-05
© 2019 Caterpillar
All rights reserved
Materials and specifications are subject to change without notice. Featured machines in photos may include
additional equipment. See your Cat dealer for available options.
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