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770 Off-Highway Truck
Exterior View

770 Off-Highway Truck

Nominal Payload Class (100%)42.1 ton (US)
Top Speed – Loaded45.8 mile/h
Target Payload (100%)42.1 ton (US)
Maximum Working Payload (110%)46.3 ton (US)
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Learn more about our 770 Off-Highway Truck

Cat’s 770 40-ton payload sets the standard for haul performance in construction and quarry industries. We’ve taken the best of our rugged, dependable Off-Highway Truck lineup and integrated it with technologies that help our environment, make operators more productive, and dramatically improve the economics of haul fleets. An optimal pass match for the 770 is the Cat 986K or 988K Wheel Loader or the 374F or 390F Hydraulic Excavators. No matter your business type, the 770 is designed to help you move materials safely and efficiently through every haul.

Nominal Payload Class (100%)
42.1ton (US)
Top Speed - Loaded
45.8mile/h
Target Payload (100%)
42.1ton (US)
Maximum Working Payload (110%)
46.3ton (US)
Maximum Allowable Payload (120%)*
50.5ton (US)
Body Capacity - SAE 2:1
32.9yd³
Note (1)
*Refer to Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations.
Note (2)
Target payload and capacity based on Dual Slope body with no liner. Attachment selection will affect payload and maximum gross machine operating weight.
Engine Model
® C15" data-metric=""> Cat® C15
Rated Engine Speed
1700r/min
Gross Power - SAE J1995:2014
515hp
Net Power - SAE J1349:2011
477hp
Net Power - ISO 9249
477hp
Net Power - 80/1269/EEC
489hp
Net Power - ISO 14396
508hp
Net Torque - SAE J1349
1834ft·lbf
Number of Cylinders
6
Bore
5.4in
Stroke
6.7in
Displacement
927.6in³
Note (1)
Power rating applies at 1,700 rpm when tested under the specified condition for the specified standard.
Note (2)
Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) 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)
No engine derating required up to 3000 m (9,843 ft) altitude.
Note (4)
Meets Japan Small Volume Exemption.
Emissions
Meets U.S. EPA Tier 4 and EU Stage V emission standards.
Target Gross Machine Operating Weight
157000lb
Target Gross Machine Weight
157000lb
Chassis Weight
55948lb
Body Weight
17306lb
Note (1)
Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.
Note (2)
Body weight is the standard Dual Slope body with no liner and will vary depending on configuration.
Forward - 1
7.4mile/h
Forward - 2
10.1mile/h
Forward - 3
13.8mile/h
Forward - 4
18.5mile/h
Forward - 5
25.1mile/h
Forward - 6
33.8mile/h
Forward - 7
45.8mile/h
Reverse
8.8mile/h
Note
Maximum travel speeds with standard 18.00R33 (E4) tires.
Differential Ratio
1.92:1
Planetary Ratio
4.80:1
Total Reduction Ratio
9.26:1
Brake Surface - Front
216in²
Brake Surface - Rear
6235in²
Brake Standards
ISO 3450:2011
Note
Target gross machine operating weight is 71 214 kg (157,000 lb).
Pump Flow - High Idle
118gal/min
Relief Valve Setting - Raise
2750psi
Relief Valve Setting - Lower
500psi
Body Raise Time - High Idle
7.5s
Body Lower Time - Float
10s
Body Power Down - High Idle
10s
Struck
23.01yd³
Heaped (SAE 2:1)*
32.9yd³
Note (2)
*ISO 6483:1980.
Note (1)
Contact your local Cat dealer for body recommendation.
Struck
23.01yd³
Heaped (SAE 2:1)*
32.9yd³
Note (1)
Contact your local Cat dealer for body recommendation.
Note (2)
*ISO 6483:1980.
Front Axle - Empty
49%
Front Axle - Loaded
34%
Rear Axle - Empty
51%
Rear Axle - Loaded
66%
Empty Loaded Cylinder Stroke Front
9.2in
Empty Loaded Cylinder Stroke Rear
5.9in
Rear axle - Oscillation
8.9°
Fuel Tank
140gal (US)
Cooling System
33gal (US)
Crankcase
17gal (US)
Differential - Final Drives
47gal (US)
Steering Tank
14.5gal (US)
Steering System - Including Tank
23gal (US)
Brake/Hoist Hydraulic Tank
38gal (US)
Brake Hoist System
60gal (US)
Torque Converter - Transmission System
17gal (US)
DEF Tank
6gal (US)
Steering Standards
ISO 5010:2007
Steer Angle
40.5°
Turning Diameter - Front
57.7ft
Turning Circle - Clearance Diameter
66.6ft
Note
Target gross machine operating weight is 71 214 kg (157,000 lb).
Standard Tire
18.00R33 (E4)
Note (1)
Productive capabilities of the 770G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production.
Note (2)
Caterpillar recommends the customer evaluates all job conditions and consults the tire manufacturer for proper tire selection.
ROPS Standards
Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
FOPS Standards
Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria.
Sound Standards (1)
Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment.
Sound Standards (2)
Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 116 dB(A).
Sound Standards (3)
Operator Equivalent Sound Pressure Level is 79 dB(A) & 74 dB(A) with EU sound suppression applied when ISO 6396:2008 is used.
Height - Top of ROPS
12.7ft
Overall Body Length
26.8ft
Inside Body Length
18.5ft
Overall Length
28.9ft
Wheel Base
13ft
Rear Axle - Tail
8.5ft
Ground Clearance
1.6ft
Dump Clearance
1.7ft
Loading Height - Empty
10.3ft
Inside Body Depth - Maximum
4.6ft
Overall Height - Body Raised
27.1ft
Operating Width
15.7ft
Centerline Front Tire Width
10.2ft
Engine Guard Clearance
1.8ft
Outside Body Width
12.9ft
Inside Body Width
11.9ft
Front Canopy Height
13.5ft
Rear Axle - Clearance
1.8ft
Centerline of Rear Dual Tire Width
8.3ft
Overall Tire Width
12.1ft
Standard and optional equipment may vary. Consult your Cat dealer for details.
Alarm, backup
Alternator, 115 ampere
Auxiliary jump start receptacle
Batteries, maintenance-free, 12V (2), 190 amp-hour
Electrical system, 24V
Lighting system:
– Backup light (halogen)
– Directional signals/hazard warning (front and rear LED)
– Headlights, (halogen) with dimmer
– Operator access courtesy lights (Developing Market Only)
Product Link Ready
Driveline
Engine crankcase
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:
– Air cleaner service indicator - electronic
– 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)
Hoist lever
Horn, electric
Light - dome
Light - courtesy
Messenger, display unit
Mirrors
Power port, 12V
ROPS cab, insulated/sound suppressed
Seat, Cat Comfort Series III:
– full air suspension
– four-point harness
Steering wheel, padded, tilt and telescopic
Storage compartment
Sun visor, tinted glass
Throttle lock
Windshield wiper (intermittent) and washer
Air-To-Air Aftercooler (ATAAC)
Air cleaner with precleaner (1)
Automatic cold mode idle control
Electric start
Turbocharger
Braking system, hydraulic actuated:
– Automatic Retarder Control (ARC) (utilizes rear oil-cooled, multiple disc brakes)
– Brake release motor (towing)
– Caliper-disc (front)
– Extended Life Brakes
– Oil-cooled, multiple disc (rear)
– Parking
– Secondary
– Service
Transmission:
– 7-speed automatic powershift
– Body up-shift inhibitor
– Controlled throttle shifting
– Directional shift management
– Downshift inhibitor
– Neutral start switch
– Neutral coast inhibitor
– Reverse shift inhibitor
– Reverse neutralizer during dumping
– Programmable top gear selection
Suspension, front and rear
Body safety pin (secures body in up position)
Body down indicator
CD-ROM parts book
Fan, hydraulic demand
Fuel tank (530 L/140 gal)
Guard, engine compartment
Guard, mud
Ground level battery disconnect
Ground level engine shutdown
Ground level grease fittings
Reservoirs (separate):
– Brake/converter/hoist
– Steering
– Transmission/torque converter
Rims 15 × 33
Rock ejectors
Service platform, left and right side
Supplemental steering (automatic)
Tie down eyes
Tow hooks (front)/Tow pin (rear)
Vandalism protection locks
Extended Life Coolant to -35° C (-30° F)
Standard and optional equipment may vary. Consult your Cat dealer for details.
Cat Engine Brake
Extended Life Brake Discs
Body heat/diverter box
Four (4) batteries
HID lights
Product Link
Backup alarm
Heated mirrors
Fuel heater
Ether aid
Coolant heater
Auto lube
Rear vision camera (WAVS)
Spare rims
Wheel chocks
Body sideboards
Traction Control System (TCS)
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