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Your long-term success is our goal here at Cat, so we’ve developed our 772G to be more productive and economical for our customers for years to come. Equipped with new transmission controls, the 772G is built for heavy-duty, off-road applications and delivers quick haul cycles with automotive-quality shifting and comfort. The 772G is also built with a Cat C18 diesel engine and with our fuel saving strategies, you can adjust engine power to meet your specific needs. Ideal pass match options for the 772G are the Cat 986K or the 988K Wheel Loader and the 390F L Hydraulic Excavator. When you consider its fuel efficiency and performance, the 772G is the right Off-Highway Truck for all generations.

Cat Specs
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Operating Specifications

Nominal Payload Class (100%)
51.6 ton (US)
Top Speed - Loaded
49.2 mile/h
Body Capacity - SAE 2:1
40.8 yd³

Engine

Gross Power - SAE J1995
605 HP
Rated Engine Speed
1700 r/min
Net Power - SAE J1349
550 HP
Net Torque - SAE J1349
2221 ft·lbf
Number of Cylinders
6
Bore
5.7 in
Stroke
7.2 in
Displacement
1105 in²
Net Power - ISO 9249
550 HP
Engine Model
Cat® C18
Engine Power - ISO 14396
598 HP

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 - 5
26.9 mile/h
Forward - 2
10.9 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

Differential Ratio
2.74:1
Planetary Ratio
4.80:1
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
Height - Top of ROPS
12.8 ft
Ground Clearance
1.6 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 yd³

Capacity - Flat Floor - 100% Fill Factor

Struck
31.3 yd³

Weight Distributions - Approximate

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

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

Differential - Final Drives
47 gal (US)
Steering Tank
14.5 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)
Crankcase
17 gal (US)
DEF Tank
6 gal (US)
Cooling System
33 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)

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.

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.