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777 (07)

Off-Highway Trucks
The Cat® 777 is engineered to be the industry's most efficient 100-ton mechanical truck. With your input, we have designed and manufactured a reliable, durable, and economical truck, offering comfort, confidence, and control to its operators. With an improved access system designed to minimize slips and falls, this truck provides firm footing and stability in less-than-perfect conditions.
Engine Model
Cat® C32B
Engine Speed
1800 r/min/1800 r/min
Gross Power - SAE J1995:2014
1025 hp/765 kW
Net Power - SAE J1349:2011
916 hp/683 kW

Key Features

Specifications

Metric | Imperial
Engine Expand Collapse
Engine Model
Cat® C32B
Engine Speed
1800 r/min 1800 r/min
Gross Power - SAE J1995:2014
1025 hp 765 kW
Net Power - SAE J1349:2011
916 hp 683 kW
Engine Power - ISO 14396
1008 hp 752 kW
Net Torque Rise
Tier 4 Final/Stage V: 36%. Tier 2: 36%
Cylinders
12
Bore
5.7 in 145 mm
Stroke
6.4 in 162 mm
Displacement
1959 in³ 32.1 l
Note (1)
Net power available at the flywheel when the engine is equipped with fan, air cleaner, aftertreatment, and alternator with engine speed at 1,800 rpm.
Note (2)
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standar
Note (3)
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 (4)
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Target Payload (100%)
101.1 ton (US) 91.7 t
Top Speed - Loaded
40.9 mile/h 65.9 km/h
Maximum Working Payload (110%)
111.2 ton (US) 100.9 t
Maximum Allowable Payload (120%)*
121.3 ton (US) 110.1 t
Body Capacity - SAE 2:1
83.1 yd³ 63.5 m³
Note (1)
Net power available at the flywheel when the engine is equipped with fan, air cleaner, aftertreatment, and alternator with engine speed at 1,800 rpm.
Note (2)
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standar
Forward - 1
6.8 mile/h 10.9 km/h
Forward - 2
9.2 mile/h 14.8 km/h
Forward - 3
12.5 mile/h 20.1 km/h
Forward - 4
16.9 mile/h 27.1 km/h
Forward - 5
22.9 mile/h 36.8 km/h
Forward - 6
30.7 mile/h 49.4 km/h
Forward - 7
41.7 mile/h 67.1 km/h
Reverse
7.5 mile/h 12.0 km/h
Note
Maximum travel speeds with standard 27.00R49 (E4) tires.
Differential Ratio
2.736:1
Planetary Ratio
7.0:1
Total Reduction Ratio
19.1576:1
Brake Standards
ISO 3450-2011
Brake Surface Area - Front
6331 in² 40846 cm²
Brake Surface Area - Rear
15828 in² 102116 cm²
Pump Flow - High Idle
120.9 gpm 458 L/min
Relief Valve Setting - Raise
2750 psi 18950 kPa
Relief Valve Setting - Lower
500 psi 3450 kPa
Body Raise Time - High Idle
15 s 15 s
Body Lower Time - Float
13 s 13 s
Body Lower Time - High Idle
13 s 13 s
Struck
54.8 yd³ 41.9 m³
Heaped (SAE 2:1)*
78.6 yd³ 60.1 m³
Note (1)
Net power available at the flywheel when the engine is equipped with fan, air cleaner, aftertreatment, and alternator with engine speed at 1,800 rpm.
Note (2)
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standar
Struck
54.8 yd³ 41.9 m³
Heaped (SAE 2:1)*
78.6 yd³ 60.1 m³
Note (1)
Net power available at the flywheel when the engine is equipped with fan, air cleaner, aftertreatment, and alternator with engine speed at 1,800 rpm.
Note (2)
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standar
SAE 2:1 - For use with material densities of 1160 kg/m3 (1,950 lb/yd3)
116.8 yd³ 89.3 m³
SAE 2:1 - For use with material densities of 1040-1160 kg/m3 (1,750-1,950 lb/yd3)
139 yd³ 106 m³
SAE 2:1 - For use with material densities of 950-1040 kg/m3 (1,600-1,750 lb/yd3)
144 yd³ 110 m³
SAE 2:1 - For use with material densities less than 950 kg/m3 (1,600 lb/yd3)
164.6 yd³ 125.9 m³
Front Axle - Empty
42 % 42 %
Front Axle - Loaded
33 % 33 %
Rear Axle - Empty
58 % 58 %
Rear Axle - Loaded
67 % 67 %
Sound Standards (1)
The operator Equivalent Sound Pressure Level (Leq) is 73 dB(A) when SAE J1166 FEB2008 is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed.
Sound Standards (2)
The exterior sound pressure level for the standard machine measured at a distance of 15 m (49 ft) according to the test procedures specified in SAE J88:2008, mid‑gear moving operation is 83 dB(A).
Sound Standards (3)
Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R1234yf. Refer to the machine labeling for identification of the gas. If equipped with R1234yf (Global Warming Potential = 0.501), the system contains 1.85 kg (4.1 lb) of refrigerant which has a CO2 equivalent of 0.001 metric tonnes (0.001 tons).
Rear axle - Oscillation
5.4 ° 5.4 °
Empty Loaded Cylinder Stroke Front
2.9 in 74.7 mm
Empty Loaded Cylinder Stroke Rear
2.5 in 66 mm
Turning Diameter - Front
83 ft 25.3 m
Steering Standards
ISO 5010:2019
Steer Angle
30.5 ° 30.5 °
Turning Circle - Clearance Diameter
93 ft 28.4 m
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.
Standard Tire
27.00R49 (E4)
Note (1)
Net power available at the flywheel when the engine is equipped with fan, air cleaner, aftertreatment, and alternator with engine speed at 1,800 rpm.
Note (2)
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standar
Fuel Tank (1)
300 gal (US) 1136 l
Fuel Tank (2)
350 gal (US) 1325 l
Cooling System
61 gal (US) 231 l
Crankcase
28.7 gal (US) 109 l
Differentials
59.9 gal (US) 227 l
Final Drive - Each
20 gal (US) 76 l
Steering System - Including Tank
14.1 gal (US) 53.6 l
Brake Hoist System
117 gal (US) 444 l
Front wheel (each)
1.98 gal (US) 7.5 l
Torque Converter - Transmission System
36.5 gal (US) 138.5 l

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