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 798 AC Electric Drive Mining Truck |
 789 Next Generation |
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Weights - Approximate |
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| Nominal Rated Payload | 410 ton (US) | 213 ton (US) | - |
| Rated Gross Machine Weight | 1375000 lb | 715000 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. | Consult your tire manufacturer for maximum tire load | - |
| Note (2) | Chassis weight with 100% fuel, 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) | Body weight varies depending on how body is equipped. | - | - |
| Body Weight | - | 60406 lb | - |
Engine |
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| Gross Power - SAE J1995 | 3500 HP | - | - |
| Engine Model | Cat® C175-16 | Cat® 3516E | - |
| Net Power - SAE J1349 | 3405 HP | - | - |
| Optional Gross Power - SAE J1995 | 3100 HP | - | - |
| Rated Speed | 1800 r/min | 1650 r/min | - |
| Emissions Rating | Fuel Optimized | Fuel Optimized | - |
| Bore | 6.9 in | 6.7 in | - |
| Stroke | 8.7 in | 8.5 in | - |
| Displacement | 5187 in³ | 4766 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. | 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) | U.S. EPA Tier 4 Final / EU Stage V available for applicable markets. | Optional 1417 kW / 1,900 HP engine rating. | - |
| Note (3) | Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp | U.S. EPA Tier 4 Final / EU Stage V optional engine available for applicable markets. | - |
| Gross Power - SAE J1995:2014 | - | 2100 HP | - |
| Net Power - SAE J1349:2011 | - | 1975 HP | - |
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) | 1000 gal (US) | - |
| Fuel Tank (Tier 4) | 1200 gal (US) | 55 gal (US) | - |
| Diesel Exhaust Fluid Tank | 100 gal (US) | 62 gal (US) | - |
| Cooling System | 211 gal (US) | 180 gal (US) | - |
| Crankcase | 82 gal (US) | 77 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 | - | - |
| Fuel Tank - Standard | - | 550 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 | - | 169 gal (US) | - |
| Brake Hoist System - Includes Tank | - | 347 gal (US) | - |
| Torque Converter - Transmission System - Including Sump | - | 55 gal (US) | - |
Steering |
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| Steer Angle | 39 ° | 36.07 ° | - |
| Turning Diameter - Front | 106.3 ft | - | - |
| Steering Standards | Steering Standards: ISO 5010:2007 | ISO 5010:2007 | - |
| Note | Turning Diameter (ISO 7457:1997) | - | - |
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 | Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated | - |
| Front Wet Disc Brake Surface Area | 22642 in² | 12662 in² | - |
| Rear - Wet Disc Brake Surface Area | 32730 in² | 20861 in² | - |
| Standards | Service and Secondary: ISO 3450:2011 | (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 | - | - |
| Parking Brake | - | Four-corner, Multi-disc, Spring applied, Hydraulically Released | - |
Weight Distributions - Approximate |
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| Front Axle - Empty | 47 % | 50% | - |
| Rear Axle - Empty | 53 % | 50% | - |
| Front Axle - Loaded | 33 % | 33% | - |
| Rear Axle - Loaded | 67 % | 67% | - |
| 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. | Twin, two-stage hydraulic cylinders with snubbing valve. | - |
| Pump Flow - High Idle | 257.3 gal/min | 106.5 gal/min | - |
| Relief Valve Setting - Raise | 3029 psi | 2749 psi | - |
| Body Raise Time - High Idle | 21 s | 14 s | - |
| Body Lower Time - Float | 22 s | 16 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. | - | - |
Suspension |
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| Type | Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments | Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top and bottom double shear clevis attachments | - |
| Effective Cylinder Stroke - Front | 10 in | 4.12 in | - |
| Effective Cylinder Stroke - Rear | 5 in | 3.67 in | - |
| Rear axle - Oscillation | - | +/- 5 degrees | - |
Cab |
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| Air Conditioning | HFC - 134A refrigerant: 21,600 Btu/h | (HFC - 134A refrigerant) 24,500 Btu/hr | - |
| Heater / Defroster | 24600 Btu/h | 33300 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. | The operator sound pressure level, 77 dB(A) with direct drive and 75 dB(A) with optional clutch, tested to ISO 6396:2008. | - |
| FOPS Standards | FOPS (Falling Objects Protective Structure) 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. | - |
| ROPS Standards (2) | - | ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 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 | 29” x 57” Rims | - |
| Standard Tires | 59/80 R63 | 37 R57 | - |
| Note (1) | Quick Change Rims optional. | Quick Change Rims optional | - |
| 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 evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities. | - |
| Optional Tires | - | 40 R57 | - |
| Optional Tire | - | 42/90 R57 | - |
Dimensions (Approximate) |
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| Height - Top of ROPS | 22.1 ft | 5550 mm | - |
| Overall Length | 51.44 ft | 12970 mm | - |
| Wheel Base | 21.9 ft | 57000 mm | - |
| Rear Axle - Tail | 16.07 ft | 3856 mm | - |
| Dump Clearance - Empty | 5.72 ft | - | - |
| Loading Height - Empty | 25.54 ft | 6147 mm | - |
| Overall Height - Body Raised | 48.85 ft | 11534 mm | - |
| Centerline Front Tire Width | 23.06 ft | 5410 mm | - |
| 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 | 6920 mm | - |
| Front Canopy Height - Empty | 26.01 ft | - | - |
| Rear Axle Clearance - Loaded | 2.8 ft | - | - |
| Centerline of Rear Dual Tire Width | 19.5 ft | 4695 mm | - |
| Overall Tire Width - Empty | 30.27 ft | - | - |
| Overall Length (High Altitude only) | 51.87 ft | - | - |
| Note | Dimensions listed includes canopy deflectors | - | - |
| Overall Body Length | - | 12945 mm | - |
| Inside Body Length | - | 8730 mm | - |
| Ground Clearance | - | 1304 mm | - |
| Dump Clearance | - | 1585 mm | - |
| Rear Sidewall Height | - | 1010 mm | - |
| Inside Body Depth - Maximum | - | 3075 mm | - |
| Operating Width | - | 7822 mm | - |
| Engine Guard Clearance | - | 1290 mm | - |
| Overall Canopy Width | - | 7769 mm | - |
| Outside Body Width | - | 7123 mm | - |
| Front Canopy Height | - | 6739 mm | - |
| Rear Axle - Clearance | - | 1263 mm | - |
| Overall Tire Width | - | 7120 mm | - |
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. | - | - |
Final Drives |
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| Planetary Ratio | - | 10.83:1 | - |
| Total Reduction Ratio | - | 25.46:1 | - |
| Type | - | Double reduction, planetary with full floating axles | - |
| Differential Ratio | - | 2.35:1 | - |
Transmission |
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| Forward - 1 | - | 7.8 mile/h | - |
| Forward - 2 | - | 10.6 mile/h | - |
| Forward - 3 | - | 14.4 mile/h | - |
| Forward - 4 | - | 19.4 mile/h | - |
| Forward - 5 | - | 26.3 mile/h | - |
| Forward - 6 | - | 35.5 mile/h | - |
| Reverse | - | 7.3 mile/h | - |
| Top Speed - Loaded | - | 35.5 mile/h | - |
Capacity - HP Body - 100% Fill Factor |
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| Struck | - | 77 m3(101 yd3) | - |
| Heaped (SAE 2:1)* | - | 143 m3(187 yd2) | - |
| Note (1) | - | Consult your local Cat dealer for body recommendations | - |
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