Overview
The Caterpillar 772 Rock Truck is a articulated dump truck listed in the Heavy Equipment Hub equipment database with structured specifications for comparison, research, and machine selection. Key specification points include engine power of 535 hp, travel speed of 49.5 mph, fuel capacity of 140.0 gal and hydraulic capacity of 35.0 gal. This model can be reviewed for equipment comparison, jobsite planning, fleet research, and specification-based machine selection. Use the full specifications table to compare the Caterpillar 772 Rock Truck against similar articulated dump truck models by power, weight, capacity, dimensions, speed, and other technical values.
Key Specifications
Net Power
495
hp
Gross Power
598
hp
Rated Payload
100,000
lb
Overall Length
28.67
ft
Full Specifications
115 specs
Dimensions
Centerline Front Tire Width
10.38 ft / 3.16 m
Centerline Of Rear Dual Tire Width
8.70 ft / 2.65 m
Dump Ground Clearance
1.83 ft / 0.56 m
Dump Height
27.42 ft / 8.36 m
Engine Guard Clearance
2.34 ft / 0.71 m
Front Canopy Height
13.83 ft / 4.22 m
Ground Clearance
2.36 ft / 0.72 m
Height - Top Of Rops
13.43 ft / 4.09 m
Inside Body Depth - Maximum
5.60 ft / 1.71 m
Inside Body Length
18.21 ft / 5.55 m
Inside Body Width
12.13 ft / 3.70 m
Load Capacity - Heaped
41 lb / 19 kg
Load Capacity - Struck
31 lb / 14 kg
Loading Height - Empty
11.48 ft / 3.50 m
Operating Width
15.59 ft / 4.75 m
Outside Body Width
12.97 ft / 3.95 m
Overall Body Length
26.81 ft / 8.17 m
Overall Height
14 ft / 4.27 m
Overall Height - Body Raised
27.42 ft / 8.36 m
Overall Length
28.67 ft / 8.74 m
Overall Tire Width
12.88 ft / 3.93 m
Overall Width
15.69 ft / 4.78 m
Rated Payload
100,000 lb / 45,359 kg
Rear Axle - Clearance
1.84 ft / 0.56 m
Rear Axle - Tail
9 lb / 4 kg
Wheel Base
12.99 in / 330 mm
Wheelbase
13 ft / 3.96 m
Engine
10.5 mile/h
1
Body Power Down - High Idle
12.50
Bore
5.70 in / 145 mm
Brake Surface - Front
216
Brake Surface - Rear
7,794
Brake/Hoist System Fluid Capacity
73 gal / 276.3 L
Cooling System Fluid Capacity
30 gal / 113.6 L
Diff And Final Drive Fluid Capacity
42 gal / 159.0 L
Differential Ratio
2.74
Displacement
1,105 cu in / 18.1 L
Empty Weight
78,155 lb / 35,451 kg
Engine Make
2236
Engine Model
C18 ACERT
Engine Oil Capacity
14 gal / 53.0 L
Forward - 1
8 mph / 12.9 km/h
Forward - 2
11 mph / 17.7 km/h
Forward - 3
14.90 mph / 24.0 km/h
Forward - 4
20 mph / 32.2 km/h
Forward - 5
27.10 mph / 43.6 km/h
Forward - 6
36.50 mph / 58.7 km/h
Forward - 7
49.50 mph / 79.7 km/h
Front Axle - Empty
48 lb / 22 kg
Front Axle - Loaded
34 lb / 15 kg
Fuel Capacity
140 gal / 530.0 L
Fuel Tank
140 gal / 530.0 L
Gross Power
598 hp / 445.9 kW
Gross Power - Sae J1995
598 hp / 445.9 kW
Hydraulic System Fluid Capacity
35 gal / 132.5 L
Loaded Weight
181,000 lb / 82,100 kg
Max Speed
49.50 mph / 79.7 km/h
Max Torque
1,988 lb-ft / 2,695 Nm
Net Power
535 hp / 398.9 kW
Net Power - 80/1269/Eec
535 hp / 398.9 kW
Net Power - Iso 9249
535 hp / 398.9 kW
Net Power - Iso 9249:1997
535 hp / 398.9 kW
Net Power - Sae J1349
535 hp / 398.9 kW
Number Of Gears - Forward
7
Number Of Gears - Reverse
1
Number of Cylinders
6
Peak Torque
1,988 lb-ft / 2,695 Nm
Planetary Ratio
4.80
Power Measured @
1,800 rpm
Pump Flow - High Idle
136 gal/min / 514.8 L/min
Rated Engine Speed
1,800 rpm
Rear Axle - Empty
52 lb / 24 kg
Rear Axle - Loaded
66 lb / 30 kg
Relief Valve Setting - Lower
500 psi / 34.5 bar
Relief Valve Setting - Raise
2,500 psi / 172.4 bar
Reverse
10.50
Steering Standards
5,010
Steering System Fluid Capacity
15 gal / 56.8 L
Stroke
7.20 in / 183 mm
Total Reduction Ratio
13.15
Weight Distribution Front - Empty
48 lb / 22 kg
Weight Distribution Front - Loaded
34 lb / 15 kg
Weight Distribution Rear - Empty
52 lb / 24 kg
Weight Distribution Rear - Loaded
66 lb / 30 kg
Hydraulics
Brake Standards
3,450
Lower Time
14.70 sec
Raise Time
8.10 sec
Other
Body Capacity - Sae 2:1
41
Dump Clearance
1.62 ft / 0.49 m
Maximum Capacity
100,000
Maximum Working Payload (110%)
112,000 lb / 50,802 kg
Nominal Payload Class (100%)
102,000 lb / 46,266 kg
Not To Exceed Payload (120%)*
122,000 lb / 55,338 kg
Steer Angle
36 deg
Target Payload Capacity
100,000 lb / 45,359 kg
Top Speed - Loaded
50 lb / 22 kg
Body Weight
22,984 lb / 10,425 kg
Brake / Hoist / Fan Hydraulic Tank
35 gal / 132.5 L
Brake/Hoist/Fan System (Tank)
73 gal / 276.3 L
Chassis Weight
55,171 lb / 25,025 kg
Cooling System
30 gal / 113.6 L
Crankcase
16 gal / 60.6 L
Differential - Final Drives
22
Effective Cylinder Stroke - Front
9.20 in / 234 mm
Effective Cylinder Stroke - Rear
5.90 in / 150 mm
Heaped 2:1 (Sae)
40.80
Load Capacity - Heaped
34.10 yd³ / 26.07 m³
Net Power
495 hp / 369.1 kW
Rear Axle - Oscillation
5 lb / 2 kg
Steering System - Including Tank
15 gal / 56.8 L
Steering Tank
9 gal / 34.1 L
Struck
31.70
Target Gross Machine Operating Weight
181,000 lb / 82,100 kg
Transmission - Torque Converter Sump
14 lb-ft / 19 Nm
Transmission - Torque Converter System - Including Sump
19 lb-ft / 26 Nm
Related Machines
Frequently Asked Questions
How powerful is the Caterpillar 772 Rock Truck engine? +
The Caterpillar 772 Rock Truck produces 598 hp (445.9 kW) of engine power. This output is typical for its weight class and designed to handle demanding Articulated Dump Truck work cycles efficiently.
How does the Caterpillar 772 Rock Truck compare to similar Articulated Dump Truck models? +
You can compare the Caterpillar 772 Rock Truck side by side with any other model using the Heavy Equipment Hub compare tool. Key comparison points include engine power, operating weight, digging depth, hydraulic flow, and overall dimensions.