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Off-highway trucks 773E
Request a QuoteKey Information
Nominal Payload
59.36 t
Engine model
3412E CAT®
Maximum speed, loaded
67.8 km/h
Overview
Performance and Efficiency
Designed for performance, designed for your comfort, built to last.
BenefitsUp to 7% More Power
Optimize power on the ground with increased torque and more speed during leveling operations
Maximum Efficiency
Benefit from the highest levels of efficiency using advanced techniques and software
Enhanced Safety
Machine and engine controls grouped at ground level for easy and secure routine maintenance
Key Features
- Driving position
- Powertrain - Engine
- Powertrain - Transmission
- Engine Integration / Powertrain Group
- Rear brakes with oil-cooled disc
- Dumpster
- Structures
- Ease of maintenance / customer support
Driving position
Ergonomic Controls at the Driver's Fingertips The ROPS/FOPS cabin is equipped with an electric window, an electrohydraulic lifting lever, an instructor seat, a front brake cutoff switch, backlit gear numbers, as well as an optional heater and air conditioning system. The electrohydraulic lifting lever is controlled with the fingertips, providing smooth lowering of the bucket with minimal impact. Electronic Monitoring System (EMS): Critical Data on Three Separate Displays (1) Block of four indicators: coolant temperature, oil temperature, brake air pressure, fuel level (2) Tachometer, digital speed indicator, actual gear indicator (3) Message center module Contour Series Air Suspension Seat and Tilt and Telescopic Steering Wheel Standard and fully adjustable, with adjustable right armrest. The ergonomic steering wheel improves comfort and control. The low-effort steering circuit and the retarder pedal reduce driver fatigue. The turn signal lever includes the headlight actuator and electric wiper controls. Visibility in a Full and Quiet ROPS/FOPS Cabin Exceptional panoramic visibility reduces fatigue and improves driver confidence and productivity. The cabin is mounted on silent blocks and soundproofed to provide a quiet and protected working environment; it also has a radio pre-equipment. The Truck Production Management System (TPMS) (optional) Provides Payload and Cycle Time Data Cat technology uses force leg pressure sensors and onboard processors to determine the weight of the payload. Consistent and accurate payloads improve efficiency by minimizing overload and underload. The onboard computer stores 1400 cycles related to payload weight, cycle time, distances, etc.
Powertrain - Engine
Diesel Engine with Air-Air Intercooler 3412e Cat The four-stroke design provides long engine times for complete fuel combustion and optimal efficiency. The large displacement and low rated speed extend the engine's lifespan while complying with China's Stage II emission standards for non-road engines. Engine 1) Valve rotators 2) Turbocharger 3) Stellite valves 4) Regulated copper and steel bearings 5) Oil cooler 6) Forged crankshaft 7) Non-adjustable injection pumps 8) Hydraulic injectors 9) Forged steel pistons 10) Full-length water-cooled liners A 40% Torque Reserve Means Shorter Cycle Times High overload force during acceleration and less downshifting on slopes or uneven terrain. Additionally, gear shift points are matched for maximum efficiency. Power and Engine Reliability Features of 3412e High-pressure injection Fully electronic control Copper alloy crankshaft bearings Hardened journals Dry-type air filters with radial seal (primary and secondary elements, pre-filter) The HEUI™ Circuit Provides Excellent Fuel Control It electronically monitors driver requests and sensor inputs to optimize engine performance. It independently controls injection pressure, timing, and duration over the engine's operating range. The rate modulation technology alters the heat release characteristics of the combustion process, significantly reducing noise levels and exhaust gas emissions. Electronic Control Module (ECM) The ECM monitors essential functions and records key indicators. The ET electronic tool can access this diagnostic information to simplify maintenance and repairs.
Powertrain - Transmission
1) The Lockable Torque Converter Increases Transmission Life and Improves Driver Comfort High rim effort and smooth gear shifts thanks to the efficiency and performance of direct drive. Engagement at approximately 6.9km/h (4.3mph), providing more power to the wheels. Quick release/engagement during gear shifts to maintain power. 2) Seven-Speed Powershift Cat Transmission A pressure modulating valve regulates clutch pressure to facilitate engagement and limit shocks. Patented rotary clutch pressure seals reduce drive losses and improve reliability. 35% slots between all gears are tailored to the Cat engine design for optimal use of engine power with fewer gear shifts and minimal use of the torque converter. Designed for the 3412E engine to provide constant power over a wide range of operating speeds. Seven forward gears, one reverse gear; gears two to seven are direct drive. The first gear has both torque converter drive and direct drive. 3) Reducers The 17.48:1 reduction ratio of the reducer and differential torque further limits stresses on the powertrain. Axles, Wheels, and Rims Floating axles are shot-peened to reduce internal stresses and increase durability. Roller splines also allow for extended lifespan. Rear cast wheels and mid-mount rims are installed using studs and nuts for maximum longevity.
Engine Integration / Powertrain Group
System Integration Improves Performance Electronic engine and transmission control improves efficiency, reduces operating costs, and increases machine lifespan. Cat Data Link Integrates machine computer systems: Automatic throttle control regulates engine speed during gear changes to limit stress on the powertrain and enable smoother gear shifts and longer component lifespan. Economy mode shifting adjusts engine curves to limit fuel consumption. Economy mode shifting regulates engine speed during bidirectional gear changes to prevent damage. High idle neutral lockout prevents shifting into neutral at speeds above 6.5km/h (4mph). Raised body shift inhibitor prevents transmission shifts beyond a preprogrammed gear ratio if the body is not fully lowered. Event memory stores operating data for access by the ET electronic device. Data includes: - Gear shift histograms - Driver-induced events - Lockup clutch counter - Machine/transmission overspeed ET Electronic Device (and Cat) Accesses engine and transmission data stored by the Cat data link system and displays the status of all engine parameters. Cat Electronic Monitoring System (EMS) Displays information on demand and alerts the driver to abnormal conditions through a three-level warning system. Optional Equipment Automatic retarder control (ARC) automatically controls downhill speed by maintaining engine speed at ±2230rpm. Traction control system (TCS) improves performance in low traction conditions by electronically monitoring and controlling wheel slip. Integrated brake controller (IBC) combines ARC and TCS to minimize electronic components and electrical lines.
Rear brakes with oil-cooled disc
Brakes 1) Parking/auxiliary piston, 2) Maneuver/slowdown piston, 3) Friction discs, 4) Steel plates, 5) Actuation springs, 6) Oil cooling inlet, 7) Oil cooling outlet Multidisc Brakes: Exceptional and Powerful Braking and Slowdown Cat multidisc brakes use continuous forced oil cooling. The optional ARC and TCS systems rely on oil-cooled rear brakes to improve the performance and productivity of the dump truck. Oil-Cooled Rear Disc Brakes Designed and manufactured to ensure reliable and non-adjustable operation, offering exceptional performance and lifespan compared to shoe and dry disc systems. The system combines maneuver, slowdown, and parking braking functions into a single unit. If the hydraulic circuit pressure drops below a certain level, the secondary piston engaged by a spring automatically engages the brake. A Thin Layer of Oil Prevents Direct Contact Between the Discs By absorbing braking forces, separating oil molecules, and dissipating heat, this design increases the lifespan of the brakes. Auxiliary Braking Oil-cooled disc brakes, spring-actuated and hydraulically released, are located on the rear axle. The front brakes are activated as part of the auxiliary system, even when they are deactivated. Parking Brakes Spring-actuated and hydraulically released parking brakes use oil bath disc brakes for the maneuvering system. A toggle switch activates the parking brake. Pistons The patented Caterpillar two-piece piston combines maneuver, auxiliary, and parking brakes, as well as slowdown functions.
Dumpster
Designed for handling a wide range of materials with different densities. Maximum payload in 3 to 5 passes with the corresponding Cat loader in materials beyond 1700kg/m³ (2900lb/yd³). Characteristics of the Buckets The joints of the side walls and the bottom use five-sided beams to resist shocks and transport stresses. The beams of the boxes improve the durability of the bottom, side walls, upper ramp, angles, and cabin roof. The Brinell400 steel wear surfaces offer excellent wear resistance and are easily cold welded. The two-stage lifting cylinders rise in 9.5 seconds and lower in 12.5 seconds. The standard bucket is heated by exhaust gases, with options including a permanent muffler or an exhaust gas bypass valve. Custom equipment includes tailgate reinforcement, extensions, and more, to ensure the nominal payload. The Dual Slope Bucket Offers the Lowest Cost Per Ton Efficient in most construction and mining applications, it also excels on difficult terrains and steeper slopes. Manufacturing of the Bucket Bottom V-shaped bottom at 8° - centers the load, lowers the center of gravity, increases retention, limits shocks. V-shaped slope at 18º and slope at 9º forward - keeps loads on slopes up to 15%. Simple slope at 12º - excellent wear characteristics and uniform discharge in hoppers, crushers, and distributors.
Structures
Boxed Design The frame of the 773E Dump Truck uses 20 molded parts in areas exposed to high stress, as well as continuous penetrating and enveloping welds. Mild steel provides flexibility, durability, and impact resistance, even in cold weather. Roll-Over Protective Structure (ROPS) The ROPS frame is firmly attached to four molded pieces welded to the chassis. The Chassis Includes the Following Features: Full front bumper and boxed front beams to support the suspension cylinder and ROPS frame Boxed rear crossmember to support the dump body and ROPS frame, with attachment points for supporting the maintenance platform and rear engine hood hinges Molded parts provide additional strength in areas subjected to stress Mild steel plates (minimum yield strength of 290MPa [42000psi]) and molded parts (minimum yield strength of 241MPa [35000psi]) provide flexibility, longevity, and ease of on-site maintenance Molded parts provide additional strength in areas subjected to stress The Boxed Chassis Simplifies Access to Powertrain Components The open design reduces overall removal and installation time, which limits repair costs. Repairs can be performed without preheating, at an ambient temperature above 16°C (60°F), thanks to ready-to-use welding supplies. The Suspension System Neutralizes the Impacts of Transport and Loading Four independent suspension cylinders absorb shocks. The rear cylinders allow axle oscillation and absorb stresses due to torsion and bending. The front cylinders serve as spindle pivots, providing excellent maneuverability and limited maintenance.
Ease of maintenance / customer support
Improvement of Maintenance Ease and Machine Availability It allows for 30 to 50% faster engine maintenance (by replacing most filters and oils). It improves maintenance planning, allows for maintenance during regular working hours, and reduces total engine maintenance time. Machine Platform The machine platform provides access to air tanks, brake master cylinder and auxiliary tank, engine oil level, air filters, hydraulic steering tanks, and battery compartment. Ground-Level Battery Disconnect Embedded Diagnostics External Diagnostics Radial Seal Filters Easy to change, radial seal filters reduce maintenance time for air filters. Vertical Screw-On Filters Vertical screw-on filters have the advantage of simplifying maintenance and eliminating leaks. Quick-Attach Pressure Ports Waterproof Electrical Connectors Machine Management Service Cat dealers optimize investments in various ways: Vehicle system analysis, to match a machine with a given task Preventive maintenance programs S•O•S oil analysis and technical analysis programs Repair option analysis Driver and mechanic training TPMS data analysis Parts Availability The Caterpillar global computer network instantly locates parts, minimizing machine downtime. Documentation Support
Product Specifications for 773E
- ENGINE
- Engine Model3412E CAT®
- Rated Engine Speed2000 RPM
- Gross Power - SAE J1995567 kW
- Net Power - SAE J1349537 kW
- Net Power - Cat537 kW
- Flywheel Power501 kW
- Net Power - ISO 9249537 kW
- Net Power - 80/1269/CEE537 kW
- Net Power: DIN70020681PS
- Number of Cylinders12
- Torque Rise33%
- Bore137 mm
- Stroke152 mm
- Displacement27 l
- Maximum Torque3436 Nm
- APPROXIMATE WEIGHTS
- Target Gross Operating Weight99300 kg
- Chassis Weight30219 kg
- Body Weight9425 kg
- OPERATING CHARACTERISTICS
- Nominal Payload Class (100%)59.36 t
- Maximum Speed, Loaded67.8 km/h
- Heaped Body Capacity26.6 m³
- Steering Angle31 °
- Turning Diameter - Clearance Circle25 m
- Heaped Body Capacity, SAE 2:135.2 m³
- Turning Radius, Front22 m
- Lifting Time9.5 s
- Lowering Time12.5 s
- TRANSMISSION
- 1st Gear Forward10.8 km/h
- 2nd Gear Forward15.1 km/h
- 3rd Gear Forward20.4 km/h
- 4th Gear Forward27.4 km/h
- 5th Gear Forward37 km/h
- 6th Gear Forward50 km/h
- 7th Gear Forward67.8 km/h
- Reverse13.1 km/h
- REDUCTION RATIOS
- Differential Ratio3.64:1
- Planetary Ratio4.8:1
- Total Reduction Ratio17.48:1
- BRAKES
- Front Brake Area1395 cm²
- Rear Brake Area61269 cm²
- Brake StandardsISO 3450: 2011
- DUMP CYLINDERS
- Pump Flow, Maximum RPM562 l/min
- Dump Valve Setting, Raise17225 kPa
- Dump Valve Setting, Lower3445 kPa
- Raise Time, Maximum RPM9.5 s
- Lower Time, Free Flow12.5 s
- Lowering Time, Maximum RPM17.51 s
- CAPACITY, HEAPED, 100% VOLUME
- Heaped26.6 m³
- Heaped 2:1 Capacity (SAE)35.2 m³
- Heaped 3:1 Capacity32.4 m³
- Heaped 1:1 Capacity43.3 m³
- APPROXIMATE WEIGHT DISTRIBUTION
- Front Axle, Empty46.6%
- Front Axle, Loaded33.8%
- Rear Axle, Empty53.4%
- Rear Axle, Loaded66.2%
- SUSPENSION
- Actual Cylinder Stroke - Front234 mm
- Actual Cylinder Stroke - Rear149 mm
- Rear Axle: Oscillation8.1°
- APPROXIMATE WEIGHTS - HEAPED
- Chassis30200 kg
- Body9210 kg
- Standard Liner3900 kg
- Front Axle, Empty46.6%
- Front Axle, Loaded33.8%
- Rear Axle, Empty53.4%
- Rear Axle, Loaded66.2%
- Gross Vehicle Weight99300 kg
- MAINTENANCE CAPACITIES
- Fuel Tank700 l
- Cooling System122 l
- Differential - Final Drives155 l
- Steering Tank34 l
- Steering Circuit - Reservoir Included60 l
- Torque Converter - Brake - Cylinder Hydraulic Tank133 l
- Lift/Brake Circuit - Reservoir Included307 l
- Torque Converter - Transmission System - With Oil Sump72 l
- Sump68 l
- Torque Converter - Transmission System53 l
- TIRES
- Standard Tire24.00-R35 (E4)
- ROPS
- ROPS/FOPS StandardsStandards in compliance with SAE J1040 May94 and ISO 3471:1997
- ROPS (Roll-Over Protective Structure) StandardsISO 3471:2008 for operator and ISO 13459:2012 for instructor
- FOPS StandardsFOPS frame criteria according to ISO 3449:2005 level II for operator and ISO 13459:2012 level II
- SOUND LEVELS
- Acoustic StandardsISO 6393:2008, SAE J1166:2008
- STEERING
- Front Axle Turning Radius22 m
- Turning Radius - Front Wheels22 m
Standard Equipment for 773E
-
NOTE
- Standard equipment and options may vary. For more information, please consult your Cat dealer.
-
BRAKES -
- Caliper Disc (Front)
- Oil Bath Disc (Rear)
- Parking Brake
- Secondary Brakes
-
CAB, ROPS FRAME -
- Contour Cat Series Air Suspension Seat
- Clothes Hook
- Cup Holder
- Insulated and Soundproofed
- Radio Ready
- Storage Compartment
- Sun Visor
- Tinted Glass
-
INDICATORS -
- Actual Gear Indicator
- Air Pressure
- Brake Oil Temperature
- Coolant Temperature
- Fuel
- Electric Maintenance Counter
- Odometer
- Speed Indicator
- Tachometer
-
LIGHTING -
- Reverse Lights
- Ceiling Light
- Hazard and Turn Signals, LED
- Halogen Headlights with Dimmer
- LED Brake and Rear Lights
-
SEPARATE RESERVOIRS -
- Brake/Hoist
- Steering
- Transmission/Torque Converter
-
TRANSMISSION -
- Automatic Electronic Controlled Powershift with Downshift Limiter/Reverse Shift Inhibitor, Neutral Shift During Dumping, Anti-Stall, Over-Speed Protection, Directional Shift Management, Programmable Maximum Gear, Gear Change Limiter with Raised Dump Body, Economy Shift Mode, and Automatic Accelerator Control
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