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775 Off-Highway Truck
798 AC Electric Drive Mining Truck

Operating Specifications

Nominal Payload Class (100%) 70.5 ton (US) - -
Top Speed - Loaded 41.6 mile/h - -
Maximum Working Payload (110%) 77.5 ton (US) - -
Target Payload (100%) 70.5 ton (US) - -
Maximum Allowable Payload (120%)* 84.6 ton (US) - -
Note (2) * Refer to the Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations. - -
Note (1) Capacity with Dual Slope body – no liner. - -
Body Capacity - SAE 2:1 55.23 yd³ - -

Engine

Engine Model Cat® C27 Cat® C175-16 -
Rated Engine Speed 1800 r/min - -
Gross Power - SAE J1995 825 HP 3500 HP -
Net Power - SAE J1349 768 HP 3405 HP -
Net Power - 80/1269/EEC 775 HP - -
Net Power - ISO 9249 775 HP - -
Bore 5.4 in 6.9 in -
Stroke 6 in 8.7 in -
Displacement 1648 in³ 5187 in³ -
Engine Power - ISO 14396 812 HP - -
Note (2) Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F). U.S. EPA Tier 4 Final / EU Stage V available for applicable markets. -
Net Torque 3148 ft-lb - -
Peak Torque - Speed 1200 r/min - -
Note (1) Power rating applies at 2,000 rpm when tested under the specified condition for the specified standard. Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. -
Note (3) No engine derating required up to 3810 m (12,500 ft) for Tier 2 Equivalent. Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp -
Emissions Meets EU Stage V emission standards. - -
Optional Gross Power - SAE J1995 - 3100 HP -
Rated Speed - 1800 r/min -
Emissions Rating - Fuel Optimized -

Capacity - Dual Slope - 100% Fill Factor

Struck 42.7 yd³ - -
Heaped (SAE 2:1)* 55.5 yd³ - -
Note (1) Contact your local Cat dealer for body recommendation. - -
Note (2) *ISO 6483:1980 - -

Capacity - Flat Floor - 100% Fill Factor

Struck 42.2 yd³ - -
Heaped (SAE 2:1)* 55.2 yd³ - -
Note (1) Contact your local Cat dealer for body recommendation. - -
Note (2) *ISO 6483:1980 - -

Weight Distributions - Approximate

Front Axle - Empty 50 % 47 % -
Front Axle - Loaded 34 % 33 % -
Rear Axle - Empty 50 % 53 % -
Rear Axle - Loaded 66 % 67 % -
Note - Weight distributions optimized with Cat body. -

Transmission

Forward - 1 6.6 mile/h - -
Forward - 2 9.3 mile/h - -
Forward - 3 12.6 mile/h - -
Forward - 4 16.8 mile/h - -
Forward - 5 22.8 mile/h - -
Forward - 6 30.7 mile/h - -
Forward - 7 41.6 mile/h - -
Reverse 8.7 mile/h - -
Note Maximum travel speeds with standard 24.00R35 (E4) tires. - -

Final Drives

Differential Ratio 3.64:1 - -
Planetary Ratio 4.80:1 - -
Total Reduction Ratio 17.49:1 - -

Brakes

Brake Surface - Front 257 in² - -
Brake Surface - Rear 9497 in² - -
Brake Standards ISO 3450:2011 - -

Service Refill Capacities

Fuel Tank 210 gal (US) 1300 gal (US) -
Cooling System 45 gal (US) 211 gal (US) -
Differential - Final Drives 38 gal (US) - -
Steering Tank 9.5 gal (US) - -
Steering System - Including Tank 14 gal (US) - -
Brake Hoist System 85 gal (US) - -
Torque Converter - Transmission System - LRC 16 gal (US) - -
Crankcase 24 gal (US) 82 gal (US) -
Brake/Hoist Hydraulic Tank 46.5 gal (US) - -
Torque Converter - Transmission System - HRC 18 gal (US) - -
Fuel Tank (Tier 4) - 1200 gal (US) -
Diesel Exhaust Fluid Tank - 100 gal (US) -
Final Drive - Each - 67 gal (US) -
Hydraulic System - Including Tank - 385 gal (US) -
Hydraulic Tank - 296 gal (US) -
Grease Tank - 90 lb -
Note (1) - DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option -

Body Hoists

Pump Flow - High Idle 118 gal/min 257.3 gal/min -
Relief Valve Setting - Raise 2502 psi 3029 psi -
Relief Valve Setting - Lower 500 psi - -
Body Raise Time - High Idle 10 s 21 s -
Body Lower Time - Float 14 s 22 s -
Body Power Down - High Idle 14 s - -
Type - Twin, two-stage hydraulic cylinders with snubbing valve. -
Body Power Down- High Idle - 17.5 s -
Note (1) - Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages. -
Note (2) - Power raise in both stages; power down capability in both stages. -
Note (3) - Automatic body-lower modulation reduces impact on frame. -

Weights - Approximate

Maximum Gross Vehicle Weight 246503 lb - -
Nominal Rated Payload - 410 ton (US) -
Rated Gross Machine Weight - 1375000 lb -
Chassis Weight - 453826 lb -
Body Weight Range - 38 833 - 43 275 kg (85,611 - 95,406 lb) -
Note (1) - Consult your tire manufacturer for maximum tire load. -
Note (2) - Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires. -
Note (3) - Body weight varies depending on how body is equipped. -

Suspension

Empty Loaded Cylinder Stroke Front 9.2 in - -
Rear axle - Oscillation 8.1° - -
Empty Loaded Cylinder Stroke Rear 5.8 in - -
Type - Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments -
Effective Cylinder Stroke - Front - 10 in -
Effective Cylinder Stroke - Rear - 5 in -

Tires

Note (2) Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection. Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities. -
Note (1) Productive capabilities of the 775G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production. Quick Change Rims optional. -
Standard Tire 24.00R35 (E4) - -
Rims - 44" x 63" Rims -
Standard Tires - 59/80 R63 -

ROPS

FOPS Standards Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria. - -
ROPS Standards Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria. - -

Sound

Sound Standards (1) The operator Equivalent Sound Pressure Level (Leq) is 76 dB(A) when SAE J1166 FEB2008 is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with t - -
Sound Standards (2) The exterior sound pressure level for the standard machine measured at a distance of 15 m (49 ft) according to the test procedures specified in SAE J88:2008, mid‑gear moving operation is 86 dB(A). - -
Sound Standards (3) 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. - -
Sound Standards - The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008. -

Steering

Turning Diameter - Front 77.1 ft 106.3 ft -
Steering Standards ISO 5010:2007 Steering Standards: ISO 5010:2007 -
Steer Angle 31 ° 39 ° -
Turning Circle - Clearance Diameter 85.6 ft - -
Note - Turning Diameter (ISO 7457:1997) -

Sustainability

Recyclability 98% - -

Service Refill Capacities - High Altitude Only

Fuel Tank - 2000 gal (US) -
Cooling System - 273 gal (US) -
Crankcase - 124 gal (US) -
Hydraulic Tank - 273 gal (US) -
Hydraulic System (includes tank) - 342 gal (US) -

AC Drive System

Total Reduction Ratio - 35:01:00 -
Top Speed - Loaded - 40 mile/h -
Generator/Alternator - Brushless, engine mounted, dual bearing -
Controls - IGBT Inverter Technology, air cooled, pressurized cabinet with filtration -
Wheel Motor - Cat high-torque AC induction, rear axle mounted -
Cooling System - Cat variable speed, hydraulically driven cooling system -

Braking System

Service Brakes - Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated -
Front Wet Disc Brake Surface Area - 22642 in² -
Rear - Wet Disc Brake Surface Area - 32730 in² -
Standards - Service and Secondary: ISO 3450:2011 -
Electric Retarding - Radial Grid Design -
Dynamic Retarding Power - Continuous - 5480 HP -
Parking Brakes - Four-corner, Multi-disc, Spring Applied, Hydraulically Released -
Load Brake - Rear service brakes -
Note - Anti-Lock Brake System (ABS) optional with CMD package -

Capacity - HE Body - 100% fill factor

Struck - 129-200 m³ (168-261 yd³) -
Heaped (SAE 2:1) - 218-276 m³ (285-361 yd³) -
Note - Contact your local Cat dealer for body recommendations. -

Cab

Air Conditioning - HFC - 134A refrigerant: 21,600 Btu/h -
Heater / Defroster - 24600 Btu/h -
Note - Ambient capabilities down to -15C (5F) for heater/defroster and up to 50C (122F) for air conditioning. -
ROPS Standards (1) - ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer. -
FOPS Standards - FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer. -

Engine - High Altitude Only

Engine Model - Cat® C175-20 -
Gross Power SAE J1995:2014 - 4150 HP -
Net Power - SAE J1349:2011 - 4000 HP -
Rated Speed - 1750 r/min -
Emissions Rating - Fuel Optimized -
Bore - 6.9 in -
Stroke - 8.7 in -
Displacement - 6469 in³ -
Note 1 - Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. -
Note 2 - Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp -

Dimensions (Approximate)

Height - Top of ROPS - 22.1 ft -
Overall Length - 51.44 ft -
Wheel Base - 21.9 ft -
Rear Axle - Tail - 16.07 ft -
Dump Clearance - Empty - 5.72 ft -
Loading Height - Empty - 25.54 ft -
Overall Height - Body Raised - 48.85 ft -
Centerline Front Tire Width - 23.06 ft -
Front Axle Clearance - Loaded - 2.81 ft -
Overall Canopy Width (with rock deflectors) - 33.15 ft -
Outside Body/Canopy Width (without rock deflectors) - 31.62 ft -
Inside Body Width - 29.44 ft -
Front Canopy Height - Empty - 26.01 ft -
Rear Axle Clearance - Loaded - 2.8 ft -
Centerline of Rear Dual Tire Width - 19.5 ft -
Overall Tire Width - Empty - 30.27 ft -
Overall Length (High Altitude only) - 51.87 ft -
Note - Dimensions listed includes canopy deflectors -
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