Category : Off-Highway Trucks ➔ Manufacturer : Caterpillar ➔ Model : 777D ➔
The Caterpillar 777D is a rigid-frame off-highway haul truck designed for mining, quarry, and large earthmoving applications. It is part of Caterpillar's 777 series and is used to transport high volumes of overburden, ore, and aggregate across rough terrain. The 777D typically features a diesel engine, mechanical powertrain, and large-capacity dump body for heavy-duty material hauling. Known for its durability and serviceability, the model is commonly used in fleet operations where payload, cycle time, and reliability are important. The Caterpillar 777D remains a recognized machine in off-highway truck applications worldwide.
Approximate Weights - Dual Slope
Caterpillar 777D Off-Highway Truck Approximate Weights - Dual Slope specifications
Body
34,785.00 lbs (15,778.23 kg)
Chassis
106,964.00 lbs (48,518.11 kg)
Approximate Weights - Dual Slope Lined
Caterpillar 777D Off-Highway Truck Approximate Weights - Dual Slope Lined specifications
Body
46,840.00 lbs (21,246.29 kg)
Body Hoists
Caterpillar 777D Off-Highway Truck Body Hoists specifications
Body Lower Time - Float
13 s
Body Power Down - High Idle
13 s
Body Raise Time - High Idle
15 s
Pump Flow - High Idle
119.00 gpm (450.42 lpm)
Relief Valve Setting - Lower
3450 psi
Relief Valve Setting - Raise
2750 psi
Brakes
Caterpillar 777D Off-Highway Truck Brakes specifications
Brake Standards
ISO 3450: 1996; SAE J1473 OCT90
Brake Surface - Front
432 in2
Brake Surface - Rear
15828 in2
Capacity - Dual Slope - 100% Fill Factor
Caterpillar 777D Off-Highway Truck Capacity - Dual Slope - 100% Fill Factor specifications
Heaped 2:1 (Sae)
78.6 cu yd
Struck
55 cu yd
Dimensions
Caterpillar 777D Off-Highway Truck Dimensions specifications
Centerline Front Tire Width
13.69 ft (4.17 m)
Centerline Of Rear Dual Tire Width
11.75 ft (3.58 m)
Dump Clearance
3.10 ft (0.94 m)
Dump Ground Clearance
2.87 ft (0.87 m)
Dump Height
32.71 ft (9.97 m)
Engine Guard Clearance
2.33 ft (0.71 m)
Front Canopy Height
16.61 ft (5.06 m)
Ground Clearance
2.46 ft (0.75 m)
Height - Top Of Rops
14.80 ft (4.51 m)
Inside Body Depth - Maximum
6.30 ft (1.92 m)
Inside Body Length
23.73 ft (7.23 m)
Inside Body Width
17.06 ft (5.20 m)
Loading Height - Empty
14.37 ft (4.38 m)
Operating Width
20.03 ft (6.11 m)
Outside Body Width
18.12 ft (5.52 m)
Overall Body Length
31.30 ft (9.54 m)
Overall Canopy Width
19.11 ft (5.82 m)
Overall Height
16.41 ft (5.00 m)
Overall Height - Body Raised
33.00 ft (10.06 m)
Overall Length
32.10 ft (9.78 m)
Overall Tire Width
17.27 ft (5.26 m)
Overall Width
20.02 ft (6.10 m)
Rear Axle - Clearance
2.50 ft (0.76 m)
Rear Axle - Tail
9.11 ft (2.78 m)
Wheel Base
14.99 ft (4.57 m)
Wheelbase
15.00 ft (4.57 m)
Dump
Caterpillar 777D Off-Highway Truck Dump specifications
Load Capacity - Heaped
79.14 cu yd
Load Capacity - Struck
54.94 cu yd
Raise Time
15 sec
Rated Payload
200,000.00 lbs (90,718.59 kg)
Engine
Caterpillar 777D Off-Highway Truck Engine specifications
Bore
6.70 in (17.02 cm)
Displacement
2,105.00 cu in (34,494.85 cu cm)
Engine Make
2236
Engine Model
3508A
Flywheel Power
938.00 hp (699.48 kw)
Gross Power
1,000.00 hp (745.71 kw)
Gross Power - Sae J1995
1,000.00 hp (745.71 kw)
Max Torque
3,476.20 lbs ft (4,713.03 nm)
Net Power
938.00 hp (699.48 kw)
Net Power - 80/1269/Eec
938.00 hp (699.48 kw)
Net Power - Cat
938.00 hp (699.48 kw)
Net Power - Iso 9249
938.00 hp (699.48 kw)
Net Power - Sae J1349
938.00 hp (699.48 kw)
Number Of Cylinders
8
Rated Engine Speed
1750 rpm
Stroke
7.50 in (19.05 cm)
Torque Measured @
1300 rpm
Torque Rise
23 %
Final Drives
Caterpillar 777D Off-Highway Truck Final Drives specifications
Differential Ratio
2.74:1
Planetary Ratio
7.00:1
Total Reduction Ratio
19.16:1
Operating Specifications
Caterpillar 777D Off-Highway Truck Operating Specifications specifications
Body Capacity - Sae 2:1
78.6 cu yd
Body Capacity - Struck
55.1 cu yd
Circle Clearance Diameter
85.50 ft (26.06 m)
Lower Time
14 s
Maximum Capacity
178,920.00 lbs (81,156.85 kg)
Nominal Payload Class (100%)
178,920.00 lbs (81,156.85 kg)
Raise Time
15 s
Steer Angle
31.8 degrees
Top Speed - Loaded
39.90 mph (64.21 kph)
Operational
Caterpillar 777D Off-Highway Truck Operational specifications
Brake/Hoist System Fluid Capacity
109.70 gal (415.21 l)
Cooling System Fluid Capacity
85.90 gal (325.13 l)
Diff And Final Drive Fluid Capacity
87.00 gal (329.30 l)
Engine Oil Capacity
32.80 gal (124.15 l)
Fuel Capacity
300.40 gal (1,137.01 l)
Hydraulic System Fluid Capacity
36.50 gal (138.15 l)
Steering System Fluid Capacity
22.20 gal (84.03 l)
Rops
Caterpillar 777D Off-Highway Truck Rops specifications
Rops/Fops Standards
SAE J1040 MAY94, ISO 3471:1997
Service Refill Capacities
Caterpillar 777D Off-Highway Truck Service Refill Capacities specifications
Brake Hoist System - Includes Tank
109.70 gal (415.21 l)
Cooling System
86.00 gal (325.51 l)
Differential - Final Drives
87.00 gal (329.30 l)
Fuel Tank
300.00 gal (1,135.50 l)
Steering System - Including Tank
22.00 gal (83.27 l)
Steering Tank
15.00 gal (56.78 l)
Torque Converter - Brake - Hoist Hydraulic Tank
66.00 gal (249.81 l)
Torque Converter - Brake - Hoist System - Including Tank
133.00 gal (503.41 l)
Torque Converter - Transmission System - Including Sump
36.50 gal (138.15 l)
Sound
Caterpillar 777D Off-Highway Truck Sound specifications
Sound Standards
ANSI/SAE J1166 MAY90, SAE J88 JUN96
Steering
Caterpillar 777D Off-Highway Truck Steering specifications
Steer Angle
31.8 degrees
Steering Standards
SAE J1511 OCT90, ISO 5010:1992 (E)
Suspension
Caterpillar 777D Off-Highway Truck Suspension specifications
Effective Cylinder Stroke - Front
12.50 in (31.75 cm)
Effective Cylinder Stroke - Rear
6.50 in (16.51 cm)
Rear Axle - Oscillation
5.4 degrees
Tires
Caterpillar 777D Off-Highway Truck Tires specifications
Standard Tire
27.00-R49 (E4)
Transmission
Caterpillar 777D Off-Highway Truck Transmission specifications
Forward - 1
6.50 mph (10.46 kph)
Forward - 2
8.90 mph (14.32 kph)
Forward - 3
12.00 mph (19.31 kph)
Forward - 4
16.20 mph (26.07 kph)
Forward - 5
21.90 mph (35.24 kph)
Forward - 6
29.40 mph (47.31 kph)
Forward - 7
39.90 mph (64.21 kph)
Max Speed
37.60 mph (60.51 kph)
Number Of Gears - Forward
7
Number Of Gears - Reverse
1
Reverse
7.4 mile/h
Transmission Type
automatic power shift
Weight Distributions - Approximate
Caterpillar 777D Off-Highway Truck Weight Distributions - Approximate specifications
Front Axle - Empty
47 %
Front Axle - Loaded
33 %
Rear Axle - Empty
53 %
Rear Axle - Loaded
67 %
Weights
Caterpillar 777D Off-Highway Truck Weights specifications
Empty Weight
155,000.00 lbs (70,306.90 kg)
Loaded Weight
355,010.50 lbs (161,030.25 kg)
Weight Distribution Front - Empty
45.4 %
Weight Distribution Front - Loaded
33.3 %
Weight Distribution Rear - Empty
54.6 %
Weight Distribution Rear - Loaded
66.7 %
Weights - Approximate
Caterpillar 777D Off-Highway Truck Weights - Approximate specifications
Body Weight
34,800.00 lbs (15,785.03 kg)
Chassis Weight
107,100.00 lbs (48,579.80 kg)
Operating Weight - Empty
141,749.00 lbs (64,296.34 kg)
Operating Weight - Loaded
355,000.00 lbs (161,025.49 kg)
Target Gross Machine Operating Weight
360,000.00 lbs (163,293.46 kg)
