Engine Model
Cat® C18 ACERT™
Rated Engine Speed
1700.0 RPM
Gross Power - SAE J1995
605.0 hp
Net Power - SAE J1349
550.0 hp
Net Power - ISO 9249
550.0 hp
Number of Cylinders
5.7 in
7.2 in
1105.0 in3
Engine Power - ISO 14396
598.0 hp
Net Torque - SAE J1349
2221.0 ft-lb

Weights - Approximate

Target Gross Machine Operating Weight
181000.0 lb
Chassis Weight
59223.0 lb
Target Gross Machine Weight
181000.0 lb

Operating Specifications

Nominal Payload Class (100%)
51.6 tons
Top Speed - Loaded
49.2 mph
Target Payload Capacity
51.6 tons
Nominal Water Tank Capacity
11000 gal


Forward 1
8.0 mph
Forward 2
10.9 mph
Forward 3
14.8 mph
Forward 4
19.8 mph
Forward 5
26.9 mph
Forward 6
36.2 mph
Forward 7
49.2 mph
10.4 mph

Final Drives

Differential Ratio
Planetary Ratio
Total Reduction Ratio


Brake Surface - Front
216.0 in2
Brake Surface - Rear
7794.0 in2
Brake Standards
ISO 3450:1996


Pump Flow - High Idle
118.0 gal/min
Relief Valve Setting - Raise
2750.0 psi
Relief Valve Setting - Lower
500.0 psi
Raise Time - High Idle
7.5 Seconds
Lower Time - Float
10.0 Seconds
Power Down - High Idle
10.0 Seconds


Rear Axle Oscillation
8.9 Degrees
Empty Loaded Cylinder Stroke Front
9.2 in
Empty Loaded Cylinder Stroke Rear
5.8 in

Service Refill Capacities

Fuel Tank
140.0 gal
Cooling System
33.0 gal
Differentials and Final Drives
47.0 gal
Steering Tank
14.5 gal
Steering System (Includes Tank)
23.0 gal
Brake Hoist System
60.0 gal
Brake/Hoist Hydraulic Tank
38.0 gal
17.0 gal
DEF Tanks
6.0 gal
Torque Converter/Transmission System
17.0 gal


Standard Tire
21.00R33 (E4)


FOPS Standards
FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.
ROPS Standards
ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
Tractor ROPS
77430 lb


Sound Standards
Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment.
Sound Standards
Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 115 dB(A).
Sound Standards
Operator Equivalent Sound Pressure Level (Leq) is 74 dB(A) when ISO 6396:2008 is used to measure the value for an enclosed cab.


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


Height to Top of ROPS
12.8 ft
13.0 ft
Ground Clearance
1.6 ft
Centerline Front Tire Width
10.4 ft
Engine Guard Clearance
2.0 ft
Rear Axle Clearance
1.9 ft
Centerline Rear Dual Tire Width
8.7 ft
Overall Tire Width
12.9 ft


Tier 4 Bare Chassis Weight without Hoist
59567 lb
LRC Bare Chassis Weight with Hoist
59223 lb
LRC Gross Vehicle Weight (Target) with Hoist
180999 lb
LRC Bare Chassis Weight without Hoist
58414 lb
LRC Gross Vehicle Weight (Target) without Hoist
180999 lb
Tier 4 Bare Chassis Weight with Hoist
60376 lb
Tier 4 Gross Vehicle Weight (Target) with Hoist
180999 lb
Tier 4 Gross Vehicle Weight (Target) without Hoist
180999 lb
  • For bare chassis standard and optional equipment, please reference the 772G Off-Highway Truck. For more information on 772G WTR Bare Chassis options, please contact Caterpillar OEM Solutions at oemsolutions@cat.com
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