Caterpillar 777G (Tier 2) Rock Truck
Units
Specifications
Engine
Cylinders
12
Net Torque
3899lb ft
Displacement
1959cu in
Bore
5.7in
Stroke
6.4in
Net Power - Iso 9249
945hp
Net Power - Sae J1349
945hp
Net Power - 80/1269/Eec
945hp
Gross Power - Sae J1995
1025hp
Engine Model
Cat C32 ACERT
Engine Power - Iso 14396
1012hp
Peak Torque - Speed
1200rpm
Engine Speed
1800rpm
Transmission
Reverse
7.7 mile/h
Forward - 1
6.8mph
Forward - 2
9.2mph
Forward - 3
12.5mph
Forward - 4
16.9mph
Forward - 5
22.9mph
Forward - 6
30.7mph
Forward - 7
41.7mph
Steering
Steering Standards
SAE J1511 FEB94 ISO 5010:1992
Steer Angle
30.5degrees
Turning Diameter - Front
83ft in
Turning Circle - Clearance Diameter
93ft in
Tires
Standard Tire
27.00R49 (E4)
Brakes
Brake Standards
ISO 3450:1996
Brake Surface Area - Rear
15828in2
Brake Surface Area - Front
6331in2
Body Hoists
Pump Flow - High Idle
120.9 gal/min
Relief Valve Setting - Raise
2750 psi
Body Raise Time - High Idle
15 s
Body Lower Time - Float
13 s
Relief Valve Setting - Lower
500 psi
Body Lower Time - High Idle
13 s
Final Drives
Planetary Ratio
7.0:1
Differential Ratio
2.736:1
Total Reduction Ratio
19.1576:1
Operating Specifications
Nominal Payload Class (100%)
200000lb
Top Speed - Loaded
41.7mph
Body Capacity - Sae 2:1
83.8yd3
Not To Exceed Payload (120%)*
240000lb
Nominal Payload (100%)
200000lb
Maximum Payload (110%)
220000lb
Service Refill Capacities
Cooling System
60.2gal
Steering System - Including Tank
14.1gal
Brake Hoist System - Includes Tank
117gal
Crankcase
28.7gal
Torque Converter - Transmission System
36.5gal
Brake Hoist System
85gal
Final Drive - Each
20gal
Fuel Tank (1)
300gal
Differentials
59.9gal
Fuel Tank (2)
350gal
Weight Distributions - Approximate
Front Axle - Empty
46 %
Front Axle - Loaded
33 %
Rear Axle - Empty
54 %
Rear Axle - Loaded
67 %
Weights - Approximate
Target Gross Machine Weight
363000lb
Capacity - Dual Slope - 100% Fill Factor
Struck
54.8yd3
Heaped 2:1 (Sae)
78.8yd3
Rops
Rops/Fops Standards
Standards
Sound
Sound Standards
Standards
Suspension
Rear Axle - Oscillation
5.4degrees
Empty Loaded Cylinder Stroke Front
2.9in
Empty Loaded Cylinder Stroke Rear
2.5in
Capacity - Coal Bodies - 100% Fill Factor
Sae 2:1 - For Use With Material Densities Of 1160 Kg/M3 (1,950 Lb/Yd3)
116yd3
Sae 2:1 - For Use With Material Densities Of 1040-1160 Kg/M3 (1,750-1,950 Lb/Yd3)
139yd3
Sae 2:1 - For Use With Material Densities Of 950-1040 Kg/M3 (1,600-1,750 Lb/Yd3)
144yd3
Sae 2:1 - For Use With Material Densities Less Than 950 Kg/M3 (1,600 Lb/Yd3)
165yd3
Capacity - X Body - 100% Fill Factor
Struck
56.3yd3
Heaped 2:1 (Sae)
83.8yd3
