CAT 773F is a 70 ton rigid mining truck designed by Caterpillar for medium to large mines and large-scale earthworks, with a rated load capacity of 65 short tons/59 metric tons. It is known for its high reliability, low operating costs, and strong terrain adaptability.

Key performance parameters

Rated load capacity of 65 short tons (59 metric tons)
Empty weight ≈ 49 metric tons
Total power CAT C27 engine, 783 kW (1050 hp)
Maximum speed 64.4 km/h (full load)
Car Capacity Stacking SAE 2:1 41.5 m ³
Fuel tank capacity 757 liters

Core Configuration and Design Features

1. Power system
   engine:

Cat ® C27 ACERT ™ Turbocharged diesel engine, compliant with Tier 4 Final/Stage V emission standards.

Integrated mechanical driven turbocharger and aftercooling technology to ensure uninterrupted power during high-altitude operations.

The intelligent electronic fuel injection system precisely controls fuel efficiency and reduces fuel consumption.

Cooling system:

Modular radiator group (independent hydraulic oil/transmission oil/engine cooling circuit), suitable for high temperature environment of 50 ° C.

2. Transmission and braking
   transmission case:

Cat 7-speed automatic electronically controlled transmission, supporting adaptive shifting strategy (automatically shifting according to slope).

Braking system:

Three level combined braking:

Main brake: Hydraulic disc brake (all wheel).

Auxiliary braking: Electromagnetic eddy current reducer (braking power 2300 kW).

Parking brake: Spring release hydraulic brake.

VIMS integrated monitoring: real-time warning of brake system overheating risk.

3. Structural reinforcement
   Frame:

Box section welded structure, with key parts made of HSLA high-strength steel (increasing fatigue life by 30%).

Self lubricating bearings at the front pivot point reduce maintenance requirements.

Carriage:

Wear resistant steel plate bottom plate (thickness ≥ 16 mm)+impact reinforcement ribs, optional Hardox ® 450 wear-resistant lining plate.

Double slope design: accelerates material unloading and reduces adhesion.

4. Hydraulic and Suspension
   Steering system:

Fully hydraulic articulated steering, with a steering angle of ± 45 ° and a minimum turning radius of 9.2 meters.

Suspension system:

Front axle: Oil air suspension (stroke 250 mm), rear axle: Rubber suspension block, balancing load and impact resistance.

Optimization design of operating costs

Fuel efficiency:

Eco mode automatically adjusts engine power, saving 8-12% fuel on flat road conditions.

Cruise control optimizes energy consumption for long-distance transportation.

Maintenance convenience:

Ground maintenance points: oil, coolant, and transmission oil filling ports are centrally arranged.

Modular components: The engine and radiator can be disassembled as a whole, reducing downtime.

Tire lifespan:

The Automatic Tire Pressure Management System (TPMS) prevents abnormal wear caused by overvoltage/undervoltage.