777G Off-Highway Truck

Specifications

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US
Metric

Overview

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.

Final Drives

Differential Ratio 2.736:1 2.736:1
Planetary Ratio 7.0:1 7.0:1
Total Reduction Ratio 19.1576:1 19.1576:1

Body Hoists

Pump Flow - High Idle 120.9 gal/min 458.0 l/min
Relief Valve Setting - Raise 2750.0 psi 18950.0 kPa
Relief Valve Setting - Lower 500.0 psi 3450.0 kPa
Body Raise Time - High Idle 15.0 s 15.0 s
Body Lower Time - Float 13.0 s 13.0 s
Body Lower Time - High Idle 13.0 s 13.0 s

Capacity - Dual Slope - 100% Fill Factor

Struck 54.8 yd³ 41.9 m³
Heaped 2:1 (SAE) 78.8 yd³ 60.2 m³

Weight Distributions - Approximate

Front Axle - Empty 46.0 % 46.0 %
Front Axle - Loaded 33.0 % 33.0 %
Rear Axle - Empty 54.0 % 54.0 %
Rear Axle - Loaded 67.0 % 67.0 %

Tires

Standard Tire 27.00R49 (E4) 27.00R49 (E4)

ROPS

ROPS/FOPS Standards Standards Standards

Sound

Sound Standards Standards Standards

Steering

Turning Diameter - Front 83.0 ft 25.3 m
Steering Standards ISO 5010:2007 ISO 5010:2007
Steer Angle 30.5 ° 30.5 °
Turning Circle - Clearance Diameter 93.0 ft 28.4 m

Capacity - X Body - 100% Fill Factor

Heaped 2:1 (SAE) 83.8 yd³ 64.1 m³
Struck 56.3 yd³ 43.1 m³

Capacity - Coal Bodies - 100% Fill Factor

SAE 2:1 - For use with material densities less than 950 kg/m3 (1,600 lb/yd3) 144.0 yd³ 126.0 m³
SAE 2:1 - For use with material densities of 1040-1160 kg/m3 (1,750-1,950 lb/yd3) 139.0 yd³ 106.0 m³
SAE 2:1 - For use with material densities of 1160 kg/m3 (1,950 lb/yd3) 116.0 yd³ 89.0 m³
SAE 2:1 - For use with material densities of 950-1040 kg/m3 (1,600-1,750 lb/yd3) 144.0 yd³ 110.0 m³

Brakes

Brake Standards ISO 3450:2011 ISO 3450:2011
Brake Surface - Front 6331.0 in²
Brake Surface - Rear 15.828 in²
Brake Surface Area - Front 6331.0 in² 40846.0 cm²
Brake Surface Area - Rear 15828.0 in² 102116.0 cm²

Dimensions

Overall Tire Width 5223.0 mm

Dimensions (Approximate) - Dual Slope

Dump Clearance 965.0 mm

Dimensions (Approximate) - Dual Slope Floor

Height - Top of ROPS - Empty 4730.0 mm
Height - Top of ROPS - Loaded 15.5 ft
Wheel Base 4560.0 mm

Dimensions (Approximate) - X Body

Overall Body Length 33.04 ft

Engine

Engine Model Cat® C32 ACERT™ Cat® C32 ACERT™
Gross Power - SAE J1995 1025.0 HP 765.0 kW
Net Power - SAE J1349 945.0 HP 683.0 kW
Net Power - 80/1269/EEC 916.0 HP 683.0 kW
Net Power - ISO 9249 916.0 HP 704.0 kW
Bore 5.7 in 145.0 mm
Stroke 6.4 in 162.0 mm
Displacement 1959.0 in³ 32.1 l
Net Power 916.0 HP 683.0 kW
Peak Torque Speed 1200.0 r/min
Cylinders 12 12
Engine Power - ISO 14396 1008.0 HP 752.0 kW
Engine Speed 1800.0 r/min 1800.0 r/min
Net Torque 3899.0 ft-lb 5286.0 N·m
Peak Torque - Speed 1200.0 r/min 1200.0 r/min

Operating Specifications

Target Payload (100%) 98.4 ton (US) 89.4 t
Top Speed - Loaded 41.7 mile/h 67.1 km/h
Turning Circle - Clearance Diameter 28.4 m
Turning Diameter - Front 25.3 m
Body Capacity - SAE 2:1 64.1 yd³ 64.1 m³
Maximum Allowable Payload (120%)* 118.1 ton (US) 118.1 ton (US)
Maximum Payload (110%) 108.2 ton (US) 108.2 ton (US)
Target Payload (100%) 98.4 ton (US) 98.4 ton (US)

Service Refill Capacities

Fuel Tank (1) 300.0 gal (US) 1136.0 l
Cooling System 63.4 gal (US) 240.0 l
Steering System - Including Tank 14.1 gal (US) 53.6 l
Differential - Final Drives (each) 76.0 l
Fuel Tank 1136.0 l
Torque Converter - Transmission System 138.5 l
Brake Hoist System 85.0 gal (US) 322.0 l
Brake Hoist System - Includes Tank 117.0 gal (US) 444.0 l
Crankcase 28.7 gal (US) 109.0 l
Differentials 59.9 gal (US) 227.0 l
Final Drive - Each 20.0 gal (US) 76.0 l
Fuel Tank (2) 350.0 gal (US) 1325.0 l
Torque Converter - Transmission System 36.5 gal (US) 138.5 l

Suspension

Rear axle - Oscillation 5.4 ° 5.4 °
Effective Cylinder Stroke - Rear 2.5 in
Empty Loaded Cylinder Stroke Front 2.9 in 74.7 mm
Empty Loaded Cylinder Stroke Rear 2.5 in 66.0 mm

Transmission

Weights - Approximate

Operating Weight - Loaded 363000.0 lb
Target Gross Machine Weight 363000.0 lb 164654.0 kg

Weights - Dual Slope - With Liner

Target Gross Machine Weight 164654.0 kg

Weights - Dual Slope - Without Liner

Empty Operating Weight 148145.0 lb

Benefits & Features

Safety

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A Focus on Personnel

The 777G is designed to minimize slips and falls, providing firm footing and stability.

Ground level daily check points
Low effort, integrated access system with hand rails for three points of contact
Aggressive tread plate on all step areas with lighted access for after dark
Integrated windshield washing platform

Confidence and Control

Confident operators will move material quickly, efficiently and profitably.

Wet Disc Braking is standard on all four corners of the truck
Four corner park brake for slope holding capability and brake wear indicator
Automatic Retarding Control for downhill grades
New traction control system

Visibility

The 777G supports your site safety plan with object detection.

Visual or audible warning of people or objects close to the machine
A combination of cameras and radar to identify potential hazards

Key Features

The 777G is solidly constructed for safety.

Rollover and Falling Object Protection is part of the cab structure
Emergency egress available through the right-side hinged window
Laminated glass is used in the front and left side windows
Ground level engine shutdown
Back-up alarm

Operator Safety

Providing features that fit your operators' needs.

Fully adjustable and suspended seat
Integrated three point safety belt
Trainer seat with lap belt facilitates on-the-job task training
Audible warnings for Events and fluid level monitoring
Automatic derate of the engine possible on some events

Job Site Safety

Safety is a key to hauling productively.

Speed limiting on the haul is new and more efficient than gear limiting
Excellent visibility with mirror and lighting options
Secondary steering in the event of a shutdown
Speed limiting during body up operations

Operator Work Environment

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Comfort

The comfort of your crew will dictate their productivity and awareness on the job.

Easy, low effort access to the cab
Ergonomic, intuitive controls
Left side power window
Automatic temperature control inside the cab
Throttle lock convenience for long uphill climbs
The cab is spacious with window area that supports visibility
An integrated footrest provides comfort and support
Sound suppression has decreased noise by 50%
The cab is isolation mounted reducing noise and vibration
Lighting packages illuminate both to the side and front of the vehicle
Automotive quality shifting from new transmission controls

Confidence and Control

Strong, predictable performance will help your operators achieve the lowest cost per ton.

Automatic Retarding Control reduces operator effort and controls braking on downhill grades
Performance and health information at a glance using well lit gauges and the Advisor Message Display
Solid steering performance from a design that maintains its integrity
Stopping power from fade-resistant brakes - purpose built for off road applications and the loads carried by the 777G
Traction control is now steering sensitive and uses the service brakes to control wheel slip. The result: faster activation and improved response to wheel slip
Visibility is excellent with extensive mirror options, large window areas and object detection.

Cab layout subject to change with optional equipment.

Information

The Advisor display and VIMS software are important reporting tools that help you analyze:

Productivity, haul road efficiency, operator skill
Fuel use, cycle times, idle time
Machine health and Events

Environmental Responsibility

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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

Sound

Operator noise is reduced by 50%
Spectator noise levels can be lowered up to 50% with the optional “XQ” package

Component Life

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

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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.

Economy Modes

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.

Performance

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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

Traction Control

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

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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.

Structural Strength

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

Brake Performance

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.

Suspension

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

Steering

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

Body Options

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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

X 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

Coal Bodies

For lightweight materials, Caterpillar offers coal bodies of varying capacities.

Material density will dictate the recommended body size
400 BNH steel is used for long wear life
Capacities include:

- 89 m3 (116 yd3) - 106 m3 (139 yd3) - 110 m3 (144 yd3) - 126 m3 (165 yd3)

XQ Package

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The XQ package reduces the 777G's spectator noise level to 112 dB(A) using both the ISO 6393 and ISO 6395 test procedures. This test result has an accuracy of plus or minus 1 dB(A).
This package includes a noise reduced Cat C32 engine, panels that enclose the engine compartment and sound reduction material within the radiator cowl.
Sound reduction material in the cab is standard on the truck.
Tier 2 trucks shipping outside of the U.S. and Canada will come equipped with a demand fan for the XQ package.

Mud Protection Package

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A mud package that encloses the engine compartment will help protect against sticky, difficult material.

Service Convenience

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Service Centers - Fluid Fill

You will save both time and money using the optional fluid fill service center.

Fill and extraction for all fluids in one location
Key pad tells employees current fluid levels
Includes all oils, coolant and fuel
Conveniently located at ground level
Lighted for night time use

Service Centers - Electrical Connections

The convenience of ground level access to VIMS data
Ground level access to ET port
Master disconnect switch
Engine lockout switch
Hydraulics lockout switch
Breaker access

Brake Monitoring

G Series introduces several brake system updates:

A brake wear indicator is standard
Additional internal springs increase separation forces to increase life

Equipment

777G (Tier 4 Equivalent) Standard Equipment

POWER TRAIN

Autostall
Engine idle shutdown
Air-To-Air Aftercooler (ATAAC)
Air cleaner with precleaner (2)
Automatic cold mode idle control
Electric priming pump
Electric cold weather start (two starters and four batteries)
Ether starting aid
Exhaust, muffler
Fuel filter/water separator
Turbocharger (2)
Braking system: - Brake wear indicator - Automatic Retarder Control (ARC) (utilizes oil-cooled, multiple disc brakes) - Brake release motor (towing) - Manual retarder (utilizes oil cooled, multiple disc brakes) - Oil-cooled, multiple disc (front/rear) - Parking - Secondary - Service
Transmission: - Auto neutral idle - APECS Software - ECPC
Part Throttle Shifting: - 7 speed automatic powershift with Torque Shift Management electronic clutch pressure control - Body up shift inhibitor - Directional shift management - Downshift inhibitor - Neutral start switch - Neutral coast inhibitor - Reverse shift inhibitor - Reverse neutralizer during dumping - Programmable top gear selection

SUSPENSION SYSTEMS

Suspension, rear (EU Compliant)

ELECTRICAL

Alarm, backup
Alternator, 115 ampere
Auxiliary jump start receptacle
Batteries, maintenance-free, 12V (4), 190 amp-hour
Electrical system, 25 AMP, 24V to 12V converter
Lighting system: - Backup light (halogen) - Directional signals/hazard warning, (front and rear LED) - Headlights, (halogen) with dimmer - Payload, indicator lights - Operator access courtesy lights - Side profile lights - Stop/tail lights (LED) - Service lights

OPERATOR ENVIRONMENT

Air conditioning
Ashtray and cigarette lighter
Coat hook
Cup holders (4)
Diagnostic connection port, 24V
Entertainment Radio Ready: - 5 amp converter - Speakers - Antenna - Wiring harness
Gauges/indicators: - Brake oil temperature gauge - Coolant temperature gauge - Hour meter - Tachometer - Engine overspeed indicator - Fuel level - Speedometer with odometer - Transmission gear indicator
Heater/defroster (11 070 kCal/43,930 BTU)
Auto temp control
Fluid level monitoring
Hoist lever
Horn, electric
Light - dome
Light - courtesy
Load counter, automatic
Advisor display
VIMS
TPMS
Foot rest
Mirrors - heated
Power port, 24V and 12V (2)
ROPS cab, insulated/sound suppressed
Cat Comfort Series III: - Full air suspension - Retractable 3 point seat belt with shoulder harness
Steering wheel, padded, tilt and telescopic
Storage compartment
Sun visor
Throttle lock
Window, right side, hinged access/egress
Electric left side window control
Windshield wiper (intermittent) and washer
Tinted, laminated glass

TECHNOLOGY PRODUCTS

Product Link Ready (Level 1)
TKPH/TMPH (Tons Kilometer Per Hour/Tons Mile Per Hour)
Object Detection (4 cameras, 4 radars)
Adaptive economy mode

GUARDS

Engine crankcase
Driveline
Fan and A/C

FLUIDS

Extended Life Coolant to -35° C (-30° F)

OTHER STANDARD EQUIPMENT

Body mounting group
Body safety pin (secures body in up position)
Body down indicator
CD ROM parts book
Center mounted rims
Fuel tank (1136 L/300 gal)
Ground level battery disconnect
Ground level engine shutdown
Ground level grease fittings
Reservoirs (separate): - Brake/hoist - Steering - Transmission/torque converter
Rims 19.5 × 49
Rock ejectors
Supplemental steering (automatic)
Tie down eyes
Tow hooks (front)/Tow pin (rear)
Vandalism protection locks
Wiggins fast fuel
Traction Control System (new version)
Attachment Zone

777G (Tier 4 Equivalent)

777G (Tier 4 Equivalent)

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Specifications

Overview

Final Drives

Body Hoists

Capacity - Dual Slope - 100% Fill Factor

Weight Distributions - Approximate

Tires

ROPS

Sound

Steering

Capacity - X Body - 100% Fill Factor

Capacity - Coal Bodies - 100% Fill Factor

Brakes

Dimensions

Dimensions (Approximate) - Dual Slope

Dimensions (Approximate) - Dual Slope Floor

Dimensions (Approximate) - X Body

Engine

Operating Specifications

Service Refill Capacities

Suspension

Transmission

Weights - Approximate

Weights - Dual Slope - With Liner

Weights - Dual Slope - Without Liner

Benefits & Features

Safety

See more

A Focus on Personnel

Confidence and Control

Visibility

Key Features

Operator Safety

Job Site Safety

Operator Work Environment

See more

Comfort

Confidence and Control

Information

Environmental Responsibility

See more

Fuel and Emissions

Sound

Component Life

Cutting Your Fuel Costs

See more

Economy Modes

Performance

See more

Traction Control

Long Term Value and Durability

See more

Structural Strength

Brake Performance

Suspension

Planetary Powershift Transmission with APECS Controls

Updated Cat C32 ACERT

Steering

Body Options

See more

Dual Slope Body

X Body

The Rubber Liner

Coal Bodies

XQ Package

See more

Mud Protection Package

See more

Service Convenience

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Service Centers - Fluid Fill

Service Centers - Electrical Connections

Brake Monitoring

Equipment

777G (Tier 4 Equivalent) Standard Equipment

Related Products

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