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 775 Off-Highway Truck |
 794 AC Mining Truck |
 789 Next Generation |
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Operating Specifications |
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| 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 |
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| Engine Model | Cat® C27 | Cat® C175-16 | Cat® 3516E |
| Rated Engine Speed | 1800 r/min | - | - |
| Gross Power - SAE J1995:2014 | 825 hp | - | 2100 hp |
| Net Power - SAE J1349:2011 | 768 hp | - | 1975 hp |
| Net Power - 80/1269/EEC | 775 hp | - | - |
| Net Power - ISO 9249 | 775 hp | - | - |
| Bore | 5.4 in | 6.9 in | 6.7 in |
| Stroke | 6 in | 8.7 in | 8.5 in |
| Displacement | 1648 in³ | 5187 in³ | 4766 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). | Tier 4 / EU Stage V option available for regions that require these emissions standards. | Optional 1417 kW / 1,900 HP engine rating. |
| 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. | Contact factory for high altitude configuration. | 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. | Tier 4 / EU Stage V engine option Net Power - SAE J1349: 3434 HP (2561 kW) | U.S. EPA Tier 4 Final / EU Stage V optional engine available for applicable markets. |
| Emissions | Meets EU Stage V emission standards. | - | - |
| Gross Power - SAE J1995 | - | 3500 hp | - |
| Standard Gross Power - SAE J1995 | - | 3500 hp | - |
| Optional Gross Power - SAE J1995 | - | 3100 hp | - |
| Optional Gross Power - SAE J1995 (Option 2) | - | 2750 hp | - |
| Rated Speed | - | 1800 r/min | 1650 r/min |
| Net Power - SAE J1349 | - | 3405 hp | - |
| Emissions Rating | - | Fuel Optimized | Fuel Optimized |
Capacity - Dual Slope - 100% Fill Factor |
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| 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 |
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| 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 |
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| Front Axle - Empty | 50 % | 49 % | 50% |
| Front Axle - Loaded | 34 % | 33 % | 33% |
| Rear Axle - Empty | 50 % | 51 % | 50% |
| Rear Axle - Loaded | 66 % | 67 % | 67% |
Transmission |
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| Forward - 1 | 6.6 mile/h | - | 7.8 mile/h |
| Forward - 2 | 9.3 mile/h | - | 10.6 mile/h |
| Forward - 3 | 12.6 mile/h | - | 14.4 mile/h |
| Forward - 4 | 16.8 mile/h | - | 19.4 mile/h |
| Forward - 5 | 22.8 mile/h | - | 26.3 mile/h |
| Forward - 6 | 30.7 mile/h | - | 35.5 mile/h |
| Forward - 7 | 41.6 mile/h | - | - |
| Reverse | 8.7 mile/h | - | 7.3 mile/h |
| Note | Maximum travel speeds with standard 24.00R35 (E4) tires. | - | - |
| Top Speed - Loaded | - | - | 35.5 mile/h |
Final Drives |
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| Differential Ratio | 3.64:1 | - | 2.35:1 |
| Planetary Ratio | 4.80:1 | - | 10.83:1 |
| Total Reduction Ratio | 17.49:1 | 35:01:00 | 25.46:1 |
| Type | - | - | Double reduction, planetary with full floating axles |
Brakes |
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| Brake Surface - Front | 257 in² | - | - |
| Brake Surface - Rear | 9497 in² | - | - |
| Brake Standards | ISO 3450:2011 | - | - |
Service Refill Capacities |
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| Fuel Tank | 210 gal (US) | 1300 gal (US) | 1000 gal (US) |
| Cooling System | 45 gal (US) | 211 gal (US) | 180 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) | - | 169 gal (US) |
| Torque Converter - Transmission System - LRC | 16 gal (US) | - | - |
| Crankcase | 24 gal (US) | 82 gal (US) | 77 gal (US) |
| Brake/Hoist Hydraulic Tank | 46.5 gal (US) | - | - |
| Torque Converter - Transmission System - HRC | 18 gal (US) | - | - |
| Final Drive - Each | - | 67 gal (US) | - |
| Hydraulic Tank | - | 296 gal (US) | - |
| Hydraulic System - Including Tank | - | 385 gal (US) | - |
| Diesel Exhaust Fluid Tank | - | 100 gal (US) | 62 gal (US) |
| Note (1) | - | DEF Tank only available for EPA Tier 4 / EU Stage V engine option. | - |
| Fuel Tank - Standard | - | - | 550 gal (US) |
| Fuel Tank (Tier 4) | - | - | 55 gal (US) |
| Front Wheels - Each | - | - | 5.8 gal (US) |
| Differentials | - | - | 161 gal (US) |
| Steering System | - | - | 42 gal (US) |
| Steering System - Includes Tank | - | - | 46 gal (US) |
| Brake Hoist System - Includes Tank | - | - | 347 gal (US) |
| Torque Converter - Transmission System - Including Sump | - | - | 55 gal (US) |
Body Hoists |
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| Pump Flow - High Idle | 118 gal/min | - | 106.5 gal/min |
| Relief Valve Setting - Raise | 2502 psi | 3029 psi | 2749 psi |
| Relief Valve Setting - Lower | 500 psi | - | - |
| Body Raise Time - High Idle | 10 s | 24 s | 14 s |
| Body Lower Time - Float | 14 s | - | 16 s |
| Body Power Down - High Idle | 14 s | - | - |
| Pump Flow - High Idle (HAA at 1,800 rpm) | - | 221 gal/min | - |
| Pump Flow - High Idle (LAA at 1,960 rpm) | - | 240 gal/min | - |
| High Idle Body Lower Time - Float | - | 20 s | - |
| Total Cycle Time | - | 44 s | - |
| Note (1) | - | Twin, two-stage hydraulic cylinders mounted inside main frame; double-acting cylinders in both stages. | - |
| Note (2) | - | Power raise in both stages; power down in both stages possible. | - |
| Note (3) | - | Automatic body-lower modulation reduces impact on frame. | - |
| Type | - | - | Twin, two-stage hydraulic cylinders with snubbing valve. |
Weights - Approximate |
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| Maximum Gross Vehicle Weight | 246503 lb | - | - |
| Nominal Rated Payload | - | 327 ton (US) | 213 ton (US) |
| Rated Gross Machine Weight | - | 1150000 lb | 715000 lb |
| Chassis Weight | - | 426237 lb | - |
| Body Weight | - | 64346 lb | 60406 lb |
| Note (1) | - | Consult your tire manufacturer for maximum tire load. | Consult your tire manufacturer for maximum tire load |
| Note (2) | - | Chassis weight with full fuel and fluids, standard & mandatory attachments, hoist, body mounting group, rims, and tires | Chassis weight with full fuel and fluids, standard and mandatory attachments, hoist, body mounting group, rims, and tires. |
| Note (3) | - | Refer to Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations. | - |
| Note (4) | - | Tier 4 Final / Stage V chassis weight: 426312 lb (193372 kg) | - |
Suspension |
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| 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 and bottom double shear clevis attachments |
| Effective Cylinder Stroke - Front | - | - | 4.12 in |
| Effective Cylinder Stroke - Rear | - | - | 3.67 in |
| Rear axle - Oscillation | - | - | +/- 5 degrees |
Tires |
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| 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. | 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. | Quick Change Rims optional |
| Standard Tire | 24.00R35 (E4) | - | - |
| Standard Tires | - | 53/80 R63 | 37 R57 |
| Rims | - | 36" x 63" | 29” x 57” Rims |
| Optional Tires | - | - | 40 R57 |
| Optional Tire | - | - | 42/90 R57 |
ROPS |
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| 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 |
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| 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 | The operator sound pressure level measured according to work cycle procedures specified in ISO 6394 and 6396 is 75 dB(A) for cab offered by Caterpillar when properly installed, maintained, and tested with doors and windows closed. | Operator sound pressure level, 77 dB(A) with direct drive and 75 dB(A) with optional clutch, tested to ISO 6396:2008. |
| 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). | 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 (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. | - | - |
Steering |
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| Turning Diameter - Front | 77.1 ft | - | - |
| Steering Standards | ISO 5010:2007 | ISO 5010:2019 | ISO 5010:2019 |
| Steer Angle | 31 ° | 39 ° | 36.07 ° |
| Turning Circle - Clearance Diameter | 85.6 ft | - | - |
| Note | - | Gross Machine Operating Weight is 521 631 kg (1,150,000 lb). | - |
Sustainability |
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| Recyclability | 98% | - | - |
AC Drive System |
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| Total Reduction Ratio | - | 35:01:00 | - |
| Top Speed - Loaded | - | 37 mile/h | - |
| Generator/Alternator | - | Brushless, engine mounted, dual bearing | - |
| Controls | - | IGBT Inverter Technology, air cooled, pressurized cabinet with filtration | - |
| Wheel Motor | - | High-torque AC induction, rear axle mounted | - |
| Cooling System | - | Variable speed, hydraulically driven cooling system | - |
Braking System |
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| Service Brakes | - | Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated | Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated |
| Front Wet Disc Brake Surface Area | - | 20378 in² | 12662 in² |
| Rear - Wet Disc Brake Surface Area | - | 30750 in² | 20861 in² |
| Standards | - | ISO 3450:2011 | (Service and Secondary) ISO 3450:2011 |
| Parking Brake | - | Four-corner, Multi-disc, Spring applied, Hydraulically Released | Four-corner, Multi-disc, Spring applied, Hydraulically Released |
| Load Brake | - | Rear service brakes | - |
| Dynamic Retarding Power - Continuous | - | 5480 hp | - |
Capacity - HE Body - 100% fill factor |
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| Struck | - | 108-133 m³ (142-175 yd³) | - |
| Heaped (SAE 2:1) | - | 180-222 m³ (236-290 yd³) | - |
| Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate | - | 0.63 in | - |
| Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate | - | 0.35 in | - |
| Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate | - | 0.31 in | - |
| Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate | - | 0.2 in | - |
| Note | - | Contact your local Cat dealer for body recommendations. | - |
Dimensions (Approximate) |
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| Height - Top of ROPS | - | 22.25 ft | 5550 mm |
| Overall Length | - | 50.75 ft | 12970 mm |
| Wheel Base | - | 21.83 ft | 57000 mm |
| Rear Axle - Tail | - | 15.5 ft | 3856 mm |
| Ground Clearance | - | 2.67 ft | 1304 mm |
| Dump Clearance | - | 3 ft | 1585 mm |
| Loading Height - Empty | - | 22.92 ft | 6147 mm |
| Overall Height - Body Raised | - | 48.42 ft | 11534 mm |
| Centerline Front Tire Width | - | 23 ft | 5410 mm |
| Front Axle Clearance | - | 3.17 ft | - |
| Canopy Width (without optional rock deflectors) | - | 29.75 ft | - |
| Outside Body Width | - | 29.75 ft | 7123 mm |
| Inside Body Width | - | 28.08 ft | 6920 mm |
| Front Canopy Height | - | 26.33 ft | 6739 mm |
| Rear Axle - Clearance | - | 3.08 ft | 1263 mm |
| Centerline of Rear Dual Tire Width | - | 18.75 ft | 4695 mm |
| Overall Tire Width | - | 28.67 ft | 7120 mm |
| Overall Canopy Width | - | 31.5 ft | 7769 mm |
| Overall Body Length | - | - | 12945 mm |
| Inside Body Length | - | - | 8730 mm |
| Rear Sidewall Height | - | - | 1010 mm |
| Inside Body Depth - Maximum | - | - | 3075 mm |
| Operating Width | - | - | 7822 mm |
| Engine Guard Clearance | - | - | 1290 mm |
Cab |
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| ROPS Standards (1) | - | Rollover Protective Structure (ROPS) meets ISO 3471:2008 criteria for operator and ISO 13459:2012 for trainer. | - |
| FOPS Standards | - | Falling Object Protective Structure (FOPS) meets ISO 3449:2005 Level II for operator and ISO 13459:2012 Level II for trainer. | FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer. |
| Air Conditioning | - | - | (HFC - 134A refrigerant) 24,500 Btu/hr |
| Heater / Defroster | - | - | 33300 Btu/h |
| ROPS Standards (2) | - | - | ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer. |
Capacity - HP Body - 100% Fill Factor |
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| Struck | - | - | 77 m3(101 yd3) |
| Heaped (SAE 2:1)* | - | - | 187 |
| Note (1) | - | - | Consult your local Cat dealer for body recommendations |
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