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 775 Off-Highway 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® 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 | 6.7 in | - |
| Stroke | 6 in | 8.5 in | - |
| Displacement | 1648 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). | 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. | 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. | U.S. EPA Tier 4 Final / EU Stage V optional engine available for applicable markets. | - |
| Emissions | Meets EU Stage V emission standards. | - | - |
| Rated Speed | - | 1650 r/min | - |
| Emissions Rating | - | 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 % | 50% | - |
| Front Axle - Loaded | 34 % | 33% | - |
| Rear Axle - Empty | 50 % | 50% | - |
| Rear Axle - Loaded | 66 % | 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 | 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) | 1000 gal (US) | - |
| Cooling System | 45 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) | 77 gal (US) | - |
| Brake/Hoist Hydraulic Tank | 46.5 gal (US) | - | - |
| Torque Converter - Transmission System - HRC | 18 gal (US) | - | - |
| Fuel Tank - Standard | - | 550 gal (US) | - |
| Fuel Tank (Tier 4) | - | 55 gal (US) | - |
| Diesel Exhaust Fluid Tank | - | 62 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 gpm | 106.5 gpm | - |
| Relief Valve Setting - Raise | 2502 psi | 2749 psi | - |
| Relief Valve Setting - Lower | 500 psi | - | - |
| Body Raise Time - High Idle | 10 s | 14 s | - |
| Body Lower Time - Float | 14 s | 16 s | - |
| Body Power Down - High Idle | 14 s | - | - |
| Type | - | Twin, two-stage hydraulic cylinders with snubbing valve. | - |
Weights - Approximate |
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| Maximum Gross Vehicle Weight | 246503 lb | - | - |
| Nominal Rated Payload | - | 213 ton (US) | - |
| Rated Gross Machine Weight | - | 715000 lb | - |
| Body Weight | - | 60406 lb | - |
| Note (1) | - | Consult your tire manufacturer for maximum tire load | - |
| Note (2) | - | Chassis weight with full fuel and fluids, standard and mandatory attachments, hoist, body mounting group, rims, and tires. | - |
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. | - |
| 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) | - | - |
| Standard Tires | - | 37 R57 | - |
| Optional Tires | - | 40 R57 | - |
| Optional Tire | - | 42/90 R57 | - |
| Rims | - | 29” x 57” Rims | - |
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 | 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). | - | - |
| 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 | - |
| Steer Angle | 31 ° | 36.07 ° | - |
| Turning Circle - Clearance Diameter | 85.6 ft | - | - |
Sustainability |
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| Recyclability | 98% | - | - |
Braking System |
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| Service Brakes | - | Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated | - |
| Front Wet Disc Brake Surface Area | - | 12662 in² | - |
| Rear - Wet Disc Brake Surface Area | - | 20861 in² | - |
| Standards | - | (Service and Secondary) ISO 3450:2011 | - |
| Parking Brake | - | Four-corner, Multi-disc, Spring applied, Hydraulically Released | - |
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 | - |
Cab |
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| Air Conditioning | - | (HFC - 134A refrigerant) 24,500 Btu/hr | - |
| Heater / Defroster | - | 33300 Btu/h | - |
| FOPS Standards | - | FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer. | - |
| ROPS Standards (2) | - | ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer. | - |
Dimensions (Approximate) |
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| Height - Top of ROPS | - | 5550 mm | - |
| Overall Body Length | - | 12945 mm | - |
| Inside Body Length | - | 8730 mm | - |
| Overall Length | - | 12970 mm | - |
| Wheel Base | - | 57000 mm | - |
| Rear Axle - Tail | - | 3856 mm | - |
| Ground Clearance | - | 1304 mm | - |
| Dump Clearance | - | 1585 mm | - |
| Loading Height - Empty | - | 6147 mm | - |
| Rear Sidewall Height | - | 1010 mm | - |
| Inside Body Depth - Maximum | - | 3075 mm | - |
| Overall Height - Body Raised | - | 11534 mm | - |
| Operating Width | - | 7822 mm | - |
| Centerline Front Tire Width | - | 5410 mm | - |
| Engine Guard Clearance | - | 1290 mm | - |
| Overall Canopy Width | - | 7769 mm | - |
| Outside Body Width | - | 7123 mm | - |
| Inside Body Width | - | 6920 mm | - |
| Front Canopy Height | - | 6739 mm | - |
| Rear Axle - Clearance | - | 1263 mm | - |
| Centerline of Rear Dual Tire Width | - | 4695 mm | - |
| Overall Tire Width | - | 7120 mm | - |
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