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 798 AC Electric Drive Mining Truck |
 770 Off-Highway Truck |
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Weights - Approximate |
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| Nominal Rated Payload | 410 ton (US) | - | - |
| Rated Gross Machine Weight | 1375000 lb | - | - |
| Chassis Weight | 453826 lb | 55948 lb | - |
| Body Weight Range | 38 833 - 43 275 kg (85,611 - 95,406 lb) | - | - |
| Note (1) | Consult your tire manufacturer for maximum tire load. | Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires. | - |
| Note (2) | Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires. | Body weight is the standard Dual Slope body with no liner and will vary depending on configuration. | - |
| Note (3) | Body weight varies depending on how body is equipped. | - | - |
| Target Gross Machine Operating Weight | - | 157000 lb | - |
| Target Gross Machine Weight | - | 157000 lb | - |
| Body Weight | - | 17306 lb | - |
Engine |
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| Gross Power - SAE J1995 | 3500 HP | 515 HP | - |
| Engine Model | Cat® C175-16 | Cat® C15 | - |
| Net Power - SAE J1349 | 3405 HP | 477 HP | - |
| Optional Gross Power - SAE J1995 | 3100 HP | - | - |
| Rated Speed | 1800 r/min | - | - |
| Emissions Rating | Fuel Optimized | - | - |
| Bore | 6.9 in | 5.4 in | - |
| Stroke | 8.7 in | 6.7 in | - |
| Displacement | 5187 in³ | 927.6 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. | Power rating applies at 1,700 rpm when tested under the specified condition for the specified standard. | - |
| Note (2) | U.S. EPA Tier 4 Final / EU Stage V available for applicable markets. | 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). | - |
| Note (3) | Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp | No engine derating required up to 3000 m (9,843 ft) altitude. | - |
| Rated Engine Speed | - | 1700 r/min | - |
| Net Power - ISO 9249 | - | 477 HP | - |
| Net Power - 80/1269/EEC | - | 489 HP | - |
| Net Power - ISO 14396 | - | 508 HP | - |
| Net Torque - SAE J1349 | - | 1834 ft·lbf | - |
| Number of Cylinders | - | 6 | - |
| Note (4) | - | Meets Japan Small Volume Exemption. | - |
| Emissions | - | Meets U.S. EPA Tier 4 and EU Stage V emission standards. | - |
Service Refill Capacities - High Altitude Only |
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| 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) | - | - |
Service Refill Capacities |
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| Fuel Tank | 1300 gal (US) | 140 gal (US) | - |
| Fuel Tank (Tier 4) | 1200 gal (US) | - | - |
| Diesel Exhaust Fluid Tank | 100 gal (US) | - | - |
| Cooling System | 211 gal (US) | 33 gal (US) | - |
| Crankcase | 82 gal (US) | 17 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 | - | - |
| Differential - Final Drives | - | 47 gal (US) | - |
| Steering Tank | - | 14.5 gal (US) | - |
| Steering System - Including Tank | - | 23 gal (US) | - |
| Brake/Hoist Hydraulic Tank | - | 38 gal (US) | - |
| Brake Hoist System | - | 60 gal (US) | - |
| Torque Converter - Transmission System | - | 17 gal (US) | - |
| DEF Tank | - | 6 gal (US) | - |
Steering |
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| Steer Angle | 39 ° | 40.5 ° | - |
| Turning Diameter - Front | 106.3 ft | 57.7 ft | - |
| Steering Standards | Steering Standards: ISO 5010:2007 | ISO 5010:2007 | - |
| Note | Turning Diameter (ISO 7457:1997) | Target gross machine operating weight is 71 214 kg (157,000 lb). | - |
| Turning Circle - Clearance Diameter | - | 66.6 ft | - |
AC Drive System |
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| 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 |
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| 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 | - | - |
Weight Distributions - Approximate |
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| Front Axle - Empty | 47 % | 49 % | - |
| Rear Axle - Empty | 53 % | 51 % | - |
| Front Axle - Loaded | 33 % | 34 % | - |
| Rear Axle - Loaded | 67 % | 66 % | - |
| Note | Weight distributions optimized with Cat body. | - | - |
Capacity - HE Body - 100% fill factor |
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| 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. | - | - |
Body Hoists |
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| Type | Twin, two-stage hydraulic cylinders with snubbing valve. | - | - |
| Pump Flow - High Idle | 257.3 gal/min | 118 gal/min | - |
| Relief Valve Setting - Raise | 3029 psi | 2750 psi | - |
| Body Raise Time - High Idle | 21 s | 7.5 s | - |
| Body Lower Time - Float | 22 s | 10 s | - |
| 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. | - | - |
| Relief Valve Setting - Lower | - | 500 psi | - |
| Body Power Down - High Idle | - | 10 s | - |
Suspension |
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| 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 | - | - |
| Empty Loaded Cylinder Stroke Front | - | 9.2 in | - |
| Empty Loaded Cylinder Stroke Rear | - | 5.9 in | - |
| Rear axle - Oscillation | - | 8.9 ° | - |
Cab |
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| 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 |
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| 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 | - | - |
Tires |
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| Rims | 44" x 63" Rims | - | - |
| Standard Tires | 59/80 R63 | - | - |
| Note (1) | Quick Change Rims optional. | Productive capabilities of the 770G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production. | - |
| Note (2) | Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities. | Caterpillar recommends the customer evaluates all job conditions and consults the tire manufacturer for proper tire selection. | - |
| Standard Tire | - | 18.00R33 (E4) | - |
Dimensions (Approximate) |
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| 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 | - | - |
Sound |
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| Sound Standards | The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008. | - | - |
| Sound Standards (1) | - | Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment. | - |
| Sound Standards (2) | - | Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 116 dB(A). | - |
| Sound Standards (3) | - | Operator Equivalent Sound Pressure Level is 79 dB(A) & 74 dB(A) with EU sound suppression applied when ISO 6396:2008 is used. | - |
Operating Specifications |
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| Nominal Payload Class (100%) | - | 42.1 ton (US) | - |
| Top Speed - Loaded | - | 45.8 mile/h | - |
| Target Payload (100%) | - | 42.1 ton (US) | - |
| Maximum Working Payload (110%) | - | 46.3 ton (US) | - |
| Maximum Allowable Payload (120%)* | - | 50.5 ton (US) | - |
| Body Capacity - SAE 2:1 | - | 32.9 yd³ | - |
| Note (1) | - | *Refer to Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations. | - |
| Note (2) | - | Target payload and capacity based on Dual Slope body with no liner. Attachment selection will affect payload and maximum gross machine operating weight. | - |
Transmission |
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| Forward - 1 | - | 7.4 mile/h | - |
| Forward - 2 | - | 10.1 mile/h | - |
| Forward - 3 | - | 13.8 mile/h | - |
| Forward - 4 | - | 18.5 mile/h | - |
| Forward - 5 | - | 25.1 mile/h | - |
| Forward - 6 | - | 33.8 mile/h | - |
| Forward - 7 | - | 45.8 mile/h | - |
| Reverse | - | 8.8 mile/h | - |
| Note | - | Maximum travel speeds with standard 18.00R33 (E4) tires. | - |
Final Drives |
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| Differential Ratio | - | 1.92:1 | - |
| Planetary Ratio | - | 4.80:1 | - |
| Total Reduction Ratio | - | 9.26:1 | - |
Brakes |
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| Brake Surface - Front | - | 216 in² | - |
| Brake Surface - Rear | - | 6235 in² | - |
| Brake Standards | - | ISO 3450:2011 | - |
| Note | - | Target gross machine operating weight is 71 214 kg (157,000 lb). | - |
Capacity - Dual Slope - 100% Fill Factor |
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| Struck | - | 23.01 yd³ | - |
| Heaped (SAE 2:1)* | - | 32.9 yd³ | - |
| Note (2) | - | *ISO 6483:1980. | - |
| Note (1) | - | Contact your local Cat dealer for body recommendation. | - |
Capacity - Flat Floor - 100% Fill Factor |
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| Struck | - | 23.01 yd³ | - |
| Heaped (SAE 2:1)* | - | 32.9 yd³ | - |
| Note (1) | - | Contact your local Cat dealer for body recommendation. | - |
| Note (2) | - | *ISO 6483:1980. | - |
ROPS |
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| ROPS Standards | - | Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria. | - |
| FOPS Standards | - | Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria. | - |
Dimensions |
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| Height - Top of ROPS | - | 12.7 ft | - |
| Overall Body Length | - | 26.8 ft | - |
| Inside Body Length | - | 18.5 ft | - |
| Overall Length | - | 28.9 ft | - |
| Wheel Base | - | 13 ft | - |
| Rear Axle - Tail | - | 8.5 ft | - |
| Ground Clearance | - | 1.6 ft | - |
| Dump Clearance | - | 1.7 ft | - |
| Loading Height - Empty | - | 10.3 ft | - |
| Inside Body Depth - Maximum | - | 4.6 ft | - |
| Overall Height - Body Raised | - | 27.1 ft | - |
| Operating Width | - | 15.7 ft | - |
| Centerline Front Tire Width | - | 10.2 ft | - |
| Engine Guard Clearance | - | 1.8 ft | - |
| Outside Body Width | - | 12.9 ft | - |
| Inside Body Width | - | 11.9 ft | - |
| Front Canopy Height | - | 13.5 ft | - |
| Rear Axle - Clearance | - | 1.8 ft | - |
| Centerline of Rear Dual Tire Width | - | 8.3 ft | - |
| Overall Tire Width | - | 12.1 ft | - |
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