Caterpillar builds Off-Highway Trucks specifically for work in mines, construction and quarries. Our Off-Highway Trucks are pass-matched with Cat Wheel Loaders and Hydraulic Excavators to speed cycle times and maximize productivity.
G Series represents a new era for this size class from Caterpillar. With your input, we have designed and manufactured a truck that is reliable, economical and offers comfort, confidence and control for your operators. Your long-term success is our goal; with G Series trucks, we’re on the right road.
As you progress towards a more sustainable business model, the Cat 777G can help.
Fuel and Emissions
There are substantial fuel saving strategies on the 777G
Two fuel economy modes can be adjusted to meet your daily production needs
Operator noise is reduced by 50%
Spectator noise levels can be lowered up to 50% with the optional “XQ” package
Remanufactured parts are an economical and eco-friendly alternative to new
Extend tire life by using the TKPH/TMPH feature that calculates tire loading
A mud protection package is available to help keep power train components clean
Castings and box section frame construction ensure long life
A new rear axle housing adds strength and enables axle filtration and lubrication
Hydraulic oil filter life is extended to 1,000 hours under normal conditions
Autostall enables quick operating temperatures for best performance and life
Delayed Engine Shutdown prevents hot shut downs that can reduce component life
Cutting Your Fuel Costs
A strategy for lowering your cost per ton
The 777G introduces several key fuel conservation features:
Auto Neutral Idle - as the 777G idles in a forward gear, the transmission will automatically slip in and out of a neutral state to avoid stalling the torque converter and raising engine rpm.
Engine Idle Shutdown - when your G Series truck is in park and idles for more than a preset time, the truck will initiate engine shutdown to conserve fuel. This feature can be time adjusted or turned on or off according to your specific needs.
Speed Limiting - while you can continue to gear limit your G Series trucks, Caterpillar offers speed limiting that allows the truck to travel at a more fuel efficient engine speed and gear selection.
Transmission Controls - New APECS transmission controls increase fuel efficiency by maintaining momentum and speed on grade.
Standard Economy Mode - G Series can save fuel by adjusting engine power through this newly adjustable economy mode. Adjust the power based on your site, fleet and economic conditions. The power can be reduced from 0.5 to 15 percent.
Adaptive Economy Mode - New for G Series - this economy mode requires a baseline for production from you using the Advisor display. As the truck transits the haul cycle, it is constantly evaluating its ability to meet your baseline in a reduced power rating. Where full power is needed, full power is applied, where reduced power works, reduced power is applied. It’s fully automatic with no special operation required.
Efficient application of power and technology
The 777G will haul your material faster and more efficiently with increases in torque, new transmission controls and higher travel speeds.
A 7% increase in torque puts more power to the ground
New transmission controls carry more torque through the shifts, producing faster cycle times, most noticeably on grades
An increase in travel speed in 7th gear also helps generate faster cycle times
G Series introduces benefits to your fleet when running in wet conditions by introducing a more responsive traction controls system.
The system is steering sensitive to determine slip vs. high speed turns
The system engages at slower speeds returning traction sooner
The system engages sooner in the slip, potentially reducing tire wear
The system modulates instantly between the two wheel groups for control
Using the hydraulic service brakes facilitates the instant modulation and responsiveness
Long Term Value and Durability
Proven components for reliable performance
At Caterpillar, we know keeping your trucks running is critical to your business, that’s why we use industry leading technology to ensure maximum machine availability and reliability.
The backbone of the 777G is its frame. Our frames are designed for off-road integrity and are built for more than one life cycle.
We strategically apply castings with box section construction to manage off-road stresses
A new front frame design increases the approach angle on ramps and grades
A new robust rear axle housing supports the truck’s performance increases
Cat trucks provide powerful, fade-resistant braking for your off road applications. G Series introduces new ways to extend brake life.
Additional springs in the design reduce wear and increase service life
All four corners have wet disc braking standard (front brake lockout no longer an option)
Slope holding capability benefits from all wheel parking brake actuation
Brake life can be extended by choosing the optional Cat Engine Brake
A brake wear indicator keeps you informed of maintenance timing
Extended life brake material is available for extreme applications
Not only proven, but continuously improving with the latest technical advantages and efficiencies.
Front struts use our proven king pin design for effective absorption of haul road shocks
Rear suspension cylinders have been inverted to minimize contamination
Planetary Powershift Transmission with APECS Controls
New APECS controls are delivering performance improvements
Torque shift management allows the truck to power through shift points
Part throttle shifting provides an exceptionally smooth ride
ECPC electronically controls clutch pressures for long life
Updated Cat C32 ACERT
For the 777G, the engine and torque converter are producing 7% more usable torque giving the truck new performance levels and quick haul cycles
Cat MEUI™ injectors provide high pressure, fine atomization for fuel efficiency and load response
Low pressure fuel lines from the tank to the engine simplify service
The C32 is carefully balanced with vibration controls that reduce noise and protect against unnecessary harmonics
Cooling is provided by either a demand fan or a conventional cooling fan
Ground level engine shutdown switch for safety
Excellent high-altitude capability
The steering linkage is designed to provide good feedback to the operator
The Cat king pin front suspension system maintains steering tolerances and also tire alignment
No matter your material type
Our bodies are designed to offer you the best possible performance, longevity and value by taking into consideration tire life, the truck’s center of gravity, load distribution targets and power train design.
Dual Slope Body
If your haul profile includes steep slopes, the dual slope body offers excellent material retention.
The dual slope has a heaped capacity of 60.2 m3 (78.8 yd3) in its standard configuration
Two sizes of side board are available to increase capacity for lighter weight materials
400 BNH steel on interior surfaces offers excellent wear characteristics
Material is carried low and centered for stability
A single 16 mm (0.62 in) steel liner option is available for this body
A single rubber liner is available for this body
If you’re feeding a crusher, the flat floor of the X Body is an excellent choice for metering material.
The X Body also offers excellent material retention and stability
400 BNH and 450 BNH steel are used on internal surfaces for wear protection
Two steel liner options are available for the X Body
A rubber liner option is also available
The Rubber Liner
This important option will protect your truck’s body in hard rock applications.
Available for the dual slope and X Bodies
Suppresses noise and vibration to the operator
Suppresses spectator noise
Prolongs body life in high impact, hard rock applications
For lightweight materials, Caterpillar offers coal bodies of varying capacities.
Material density will dictate the recommended body size