Increase uptime, efficiency, and safety on the jobsite with the productive and reliable Cat® 773 Off-Highway Truck. Built with the powerful Cat 3412E air-to-air aftercooled engine, featuring Hydraulic Electronic Unit Injector (HEUI™) for fuel efficient operation. Delivering unmatched reliability and durability along with high uptime, the 773 is the right choice for your operation.
Engine
| Engine Model |
Cat® 3412E |
| Rated Engine Speed |
2000 r/min |
| Gross Power - SAE J1995 |
760 HP |
| Net Power - SAE J1349 |
720 HP |
| Number of Cylinders |
12 |
| Torque Rise |
33 % |
| Bore |
137 mm |
| Stroke |
152 mm |
| Displacement |
27 l |
| Note (1) |
These engine ratings apply at 2,000 rpm when tested under the specified
condition for the specified standard in effect at the time of manufacture. |
| Note (2) |
Power rating conditions based on standard conditions of 25° C (77° F) and99 kPa (29.32 in Hg) dry barometer, using 35° C (95° F) API gravity fuel havingan LHV of 42 780 kJ/kg (18,390 Btu/lb) when used at 30° C (86° F) [referencea fuel density of 838.9 g/L (7.001 lb/gal)]. |
| Note (3) |
Net power advertised is the power available at the flywheel when the
engine is equipped with fan, air cleaner, muffler, and alternator. |
| Note (4) |
No engine derating required up to 3048 m (10,000 ft). |
| Note (5) |
Meets China Nonroad Stage III emission standards equivalent to Tier 2. |
Weights - Approximate
| Target Gross Machine Operating Weight |
99300 kg |
| Operating Weight - Empty |
40192 kg |
| Operating Weight - Loaded |
59108 kg |
| Note (1) |
Does not include Liner. |
| Note (2) |
Empty operating weight may vary based on the machine configuration.
Refer to Off-Highway Truck Payload Policy. |
Operating Specifications
| Nominal Payload Class (100%) |
59.1 t |
| Top Speed - Loaded |
67.8 km/h |
Transmission
| Forward - 1 |
10.8 km/h |
| Forward - 2 |
15.1 km/h |
| Forward - 3 |
20.4 km/h |
| Forward - 4 |
27.4 km/h |
| Forward - 5 |
37 km/h |
| Forward - 6 |
50 km/h |
| Forward - 7 |
67.8 km/h |
| Reverse |
13.1 km/h |
| Note |
Maximum travel speeds with standard 24.00R35 (E4) tires. |
Final Drives
| Differential Ratio |
3.64:1 |
| Planetary Ratio |
4.8:1 |
| Total Reduction Ratio |
17.48:1 |
Brakes
| Brake Surface - Front |
1395 cm² |
| Brake Surface - Rear |
61269 cm² |
| Brake Standards |
ISO 3450: 2011 |
Body Hoists
| Pump Flow - High Idle |
562 l/min |
| Relief Valve Setting - Raise |
17225 kPa |
| Relief Valve Setting - Lower |
3445 kPa |
| Body Raise Time - High Idle |
9.5 s |
| Body Lower Time - Float |
12.5 s |
| Note (1) |
Twin, two-stage hydraulic cylinders mounted outside the main frame; double acting cylinders in second stage. |
| Note (2) |
Power raise in both stages and power down in second stage. |
Capacity - Dual Slope - 100% Fill Factor
| Struck |
26.6 m³ |
| Heaped 2:1 (SAE) |
35.2 m³ |
| Note (1) |
ISO 6483:1980 |
| Note (2) |
Contact your local Cat dealer for body recommendation. |
Cab
| ROPS Standards (1) |
Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 for operator and ISO 13459:2012 for trainer. |
| FOPS Standards |
Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II
FOPS criteria for operator and ISO 13459:2012 Level II criteria for trainer. |
| Note (1) |
The air conditioning system on this machine contains the fluorinated
greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The
system contains 2.4 kg (5.29 Ibs) of refrigerant, which has a CO2 equivalent
of 3.43 metric tonnes (3.78 tons). |
Weight Distributions - Approximate
| Front Axle - Empty |
46.6 % |
| Front Axle - Loaded |
33.8 % |
| Rear Axle - Empty |
53.4 % |
| Rear Axle - Loaded |
66.2 % |
Suspension
| Effective Cylinder Stroke - Front |
234 mm |
| Effective Cylinder Stroke - Rear |
149 mm |
| Rear axle - Oscillation |
8.1 ° |
Approximate Weights - Dual Slope
| Chassis |
30219 kg |
| Gross Vehicle |
99300 kg |
Service Refill Capacities
| Fuel Tank |
700 l |
| Cooling System |
122 l |
| Differential - Final Drives |
155 l |
| Steering Tank |
34 l |
| Steering System - Including Tank |
60 l |
| Torque Converter - Brake - Hoist Hydraulic Tank |
133 l |
| Brake Hoist System - Includes Tank |
307 l |
| Torque Converter - Transmission System - Including Sump |
72 l |
| Torque Converter - Transmission System |
53 l |
| Crankcase |
68 l |
Tires
| Standard Tire |
24.00-R35 (E4) |
| Note (1) |
Productive capabilities of the 773 truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production. |
| Note (2) |
Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection. |
Sound
| Sound Standards |
ISO 6393:2008, SAE J1166:2008 |
| Note (1) |
For cab offered by Caterpillar, the operator sound exposure Leq (Equivalent Sound Pressure Level) is 80 dB(A) when measured according to work cycle procedures specified in SAE J1166:2008. This occurs when the cab is properly installed and maintained. The test was conducted with doors and windows closed. |
| Note (2) |
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. |
Steering
| Turning Diameter - Front |
22 m |
| Steering Standards |
Steering Standards Meets ISO 5010:2007 |
| Steer Angle |
31 ° |
| Turning Circle - Clearance Diameter |
25 m |
Dimensions
| Height - Top of ROPS |
4000 mm |
| Overall Body Length |
8535 mm |
| Inside Body Length |
6400 mm |
| Overall Length |
9120 mm |
| Wheel Base |
4191 mm |
| Rear Axle - Tail |
2782 mm |
| Ground Clearance |
566 mm |
| Dump Clearance |
676 mm |
| Loading Height - Empty |
3773 mm |
| Inside Body Depth - Maximum |
1805 mm |
| Overall Height - Body Raised |
8787 mm |
| Operating Width |
5076 mm |
| Centerline Front Tire Width |
3275 mm |
| Engine Guard Clearance |
667 mm |
| Overall Canopy Width |
4393 mm |
| Outside Body Width |
3910 mm |
| Inside Body Width |
3658 mm |
| Front Canopy Height |
4393 mm |
| Rear Axle - Clearance |
591 mm |
| Centerline of Rear Dual Tire Width |
2927 mm |
| Overall Tire Width |
4457 mm |
30 Mins