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In 1963, Caterpillar introduced the 769, a revolutionary off-road truck that was purpose built for the rigors of mining and heavy construction. Fifty years later, our trucks have never been better. We've taken the best of our rugged, dependable heritage and combined it with technologies that help our environment, make your operators more productive and dramatically improve the economics of your haul fleet. This 772G has an updated traction control system to keep you moving when the ground conditions aren't perfect, you'll see improvements in fuel use through new and flexible fuel saving strategies, and we're making the operating experience best in class with automotive quality shifting, noise reduction and cab updates. Our heritage and new use of technology are combined in this truck for one purpose - the continued success of your business.

Cat Specs
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Operating Specifications

Nominal Payload Class (100%)
51.6 ton (US)
Top Speed - Loaded
49.2 mile/h
Target Payload Capacity
51.6 ton (US)
Maximum Payload Class (110%)
56.7 ton (US)
Not to Exceed Payload (120%)
61.9 ton (US)
Body Capacity - SAE 2:1
40.8 yd²

Engine

Rated Engine Speed
1700 r/min
Net Torque - SAE J1349
2221 ft·lbf
Bore
5.7 in
Stroke
7.2 in
Displacement
1105 in³
Number of Cylinders
6
Net Power - SAE J1349
550 HP
Engine Power - ISO 14396
598 HP
Net Power - ISO 9249
550 HP
Gross Power - SAE J1995
605 HP
Engine Model
Cat® C18 ACERT™

Weights - Approximate

Target Gross Machine Operating Weight
181000 lb
Target Gross Machine Weight
181000 lb
Chassis Weight
59223 lb
Body Weight
17306 lb

Transmission

Forward - 1
8 mile/h
Forward - 2
10.9 mile/h
Forward - 5
26.9 mile/h
Forward - 6
36.2 mile/h
Forward - 7
49.2 mile/h
Reverse
10.4 mile/h
Forward - 3
14.8 mile/h
Forward - 4
19.8 mile/h

Final Drives

Planetary Ratio
4.80:1
Differential Ratio
2.74:1
Total Reduction Ratio
13.14:1

Brakes

Brake Surface - Front
216 in²
Brake Surface - Rear
7794 in²
Brake Standards
ISO 3450:1996

Body Hoists

Pump Flow - High Idle
118 gal/min
Relief Valve Setting - Raise
2750 psi
Relief Valve Setting - Lower
500 psi
Body Raise Time - High Idle
7.5 s
Body Lower Time - Float
10 s
Body Power Down - High Idle
10 s

Dimensions

Wheel Base
13 in
Overall Body Length
26.8 ft
Inside Body Length
19 ft
Overall Length
28.9 ft
Rear Axle - Tail
9.5 ft
Dump Clearance
1.5 ft
Loading Height - Empty
11.6 ft
Inside Body Depth - Maximum
5.7 ft
Overall Height - Body Raised
27.1 ft
Operating Width
15.7 ft
Ground Clearance
1.6 ft
Height - Top of ROPS
12.8 ft
Centerline Front Tire Width
10.4 ft
Engine Guard Clearance
2 ft
Outside Body Width
12.9 ft
Inside Body Width
11.9 ft
Front Canopy Height
13.7 ft
Rear Axle - Clearance
1.9 ft
Centerline of Rear Dual Tire Width
8.7 ft
Overall Tire Width
12.9 ft

Capacity - Dual Slope - 100% Fill Factor

Struck
31.3 yd²
Heaped 2:1 (SAE)
40.8 yd²

Capacity - Flat Floor - 100% Fill Factor

Struck
31.3 yd²
Heaped 2:1 (SAE)
40.9 yd²

Weight Distributions - Approximate

Front Axle - Empty
51.4 %
Front Axle - Loaded
34.2 %
Rear Axle - Empty
48.6 %
Rear Axle - Loaded
65.8 %

ROPS

ROPS Standards
ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
FOPS Standards
FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.

Suspension

Empty Loaded Cylinder Stroke Front
9.2 in
Empty Loaded Cylinder Stroke Rear
5.8 in
Rear axle - Oscillation
8.9 °

Service Refill Capacities

Crankcase
17 gal (US)
Differential - Final Drives
47 gal (US)
Steering Tank
14.5 gal (US)
Cooling System
33 gal (US)
Steering System - Including Tank
23 gal (US)
Brake/Hoist Hydraulic Tank
38 gal (US)
Brake Hoist System
60 gal (US)
Torque Converter - Transmission System
17 gal (US)
Fuel Tank
140 gal (US)
DEF Tank
6 gal (US)

Steering

Steering Standards
ISO 5010:2007
Steer Angle
31 °
Turning Diameter - Front
57.7 ft
Turning Circle - Clearance Diameter
66.6 ft

Tires

Standard Tire
21.00R33 (E4)

Sound

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 115 dB(A).
Sound Standards (3)
Operator Equivalent Sound Pressure Level (Leq) is 74 dB(A) when ISO 6396:2008 is used to measure the value for an enclosed cab.