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 789 Next Generation |
 794 AC Mining Truck |
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Weights - Approximate |
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| Nominal Rated Payload | 213 ton (US) | 327 ton (US) | - |
| Rated Gross Machine Weight | 715000 lb | 1150000 lb | - |
| Body Weight | 60406 lb | 64346 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 and mandatory attachments, hoist, body mounting group, rims, and tires. | Chassis weight with full fuel and fluids, standard & mandatory attachments, hoist, body mounting group, rims, and tires | - |
| Chassis Weight | - | 426237 lb | - |
| 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) | - |
Engine |
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| Gross Power - SAE J1995:2014 | 2100 HP | - | - |
| Engine Model | Cat® 3516E | Cat® C175-16 | - |
| Net Power - SAE J1349:2011 | 1975 HP | - | - |
| Rated Speed | 1650 r/min | 1800 r/min | - |
| Emissions Rating | Fuel Optimized | Fuel Optimized | - |
| Bore | 6.7 in | 6.9 in | - |
| Stroke | 8.5 in | 8.7 in | - |
| Displacement | 4766 in³ | 5187 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. | Contact factory for high altitude configuration. | - |
| Note (2) | Optional 1417 kW / 1,900 HP engine rating. | Tier 4 / EU Stage V option available for regions that require these emissions standards. | - |
| Note (3) | U.S. EPA Tier 4 Final / EU Stage V optional engine available for applicable markets. | Tier 4 / EU Stage V engine option Net Power - SAE J1349: 3434 HP (2561 kW) | - |
| 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 | - |
| Net Power - SAE J1349 | - | 3405 HP | - |
Weight Distributions - Approximate |
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| Front Axle - Empty | 50% | 49 % | - |
| Rear Axle - Loaded | 67% | 67 % | - |
| Rear Axle - Empty | 50% | 51 % | - |
| Front Axle - Loaded | 33% | 33 % | - |
Final Drives |
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| Planetary Ratio | 10.83:1 | - | - |
| Total Reduction Ratio | 25.46:1 | 35:01:00 | - |
| 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 | - | - |
Tires |
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| Standard Tires | 37 R57 | 53/80 R63 | - |
| Optional Tires | 40 R57 | - | - |
| Optional Tire | 42/90 R57 | - | - |
| Rims | 29” x 57” Rims | 36" x 63" | - |
| 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. | - |
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 | 12662 in² | 20378 in² | - |
| Rear - Wet Disc Brake Surface Area | 20861 in² | 30750 in² | - |
| Standards | (Service and Secondary) ISO 3450:2011 | 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 - 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 | - | - |
Body Hoists |
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| Type | Twin, two-stage hydraulic cylinders with snubbing valve. | - | - |
| Pump Flow - High Idle | 106.5 gal/min | - | - |
| Relief Valve Setting - Raise | 2749 psi | 3029 psi | - |
| Body Raise Time - High Idle | 14 s | 24 s | - |
| Body Lower Time - Float | 16 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. | - |
Suspension |
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| 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 | - | - |
Service Refill Capacities |
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| Fuel Tank - Standard | 550 gal (US) | - | - |
| Fuel Tank | 1000 gal (US) | 1300 gal (US) | - |
| Fuel Tank (Tier 4) | 55 gal (US) | - | - |
| Diesel Exhaust Fluid Tank | 62 gal (US) | 100 gal (US) | - |
| Cooling System | 180 gal (US) | 211 gal (US) | - |
| Crankcase | 77 gal (US) | 82 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) | - | - |
| Final Drive - Each | - | 67 gal (US) | - |
| Hydraulic Tank | - | 296 gal (US) | - |
| Hydraulic System - Including Tank | - | 385 gal (US) | - |
| Note (1) | - | DEF Tank only available for EPA Tier 4 / EU Stage V engine option. | - |
Cab |
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| Air Conditioning | (HFC - 134A refrigerant) 24,500 Btu/hr | - | - |
| Heater / Defroster | 33300 Btu/h | - | - |
| ROPS Standards (1) | The operator sound pressure level, 77 dB(A) with direct drive and 75 dB(A) with optional clutch, tested to ISO 6396:2008. | Rollover Protective Structure (ROPS) meets ISO 3471:2008 criteria for operator and ISO 13459:2012 for trainer. | - |
| ROPS Standards (2) | 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. | Falling Object Protective Structure (FOPS) meets ISO 3449:2005 Level II for operator and ISO 13459:2012 Level II for trainer. | - |
Steering |
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| Steer Angle | 36.07 ° | 39 ° | - |
| Steering Standards | ISO 5010:2007 | ISO 5010:2007 | - |
| Note | - | Gross Machine Operating Weight is 521 631 kg (1,150,000 lb). | - |
Dimensions (Approximate) |
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| Height - Top of ROPS | 5550 mm | 22.25 ft | - |
| Overall Body Length | 12945 mm | - | - |
| Inside Body Length | 8730 mm | - | - |
| Overall Length | 12970 mm | 50.75 ft | - |
| Wheel Base | 57000 mm | 21.83 ft | - |
| Rear Axle - Tail | 3856 mm | 15.5 ft | - |
| Ground Clearance | 1304 mm | 2.67 ft | - |
| Dump Clearance | 1585 mm | 3 ft | - |
| Loading Height - Empty | 6147 mm | 22.92 ft | - |
| Rear Sidewall Height | 1010 mm | - | - |
| Inside Body Depth - Maximum | 3075 mm | - | - |
| Overall Height - Body Raised | 11534 mm | 48.42 ft | - |
| Operating Width | 7822 mm | - | - |
| Centerline Front Tire Width | 5410 mm | 23 ft | - |
| Engine Guard Clearance | 1290 mm | - | - |
| Overall Canopy Width | 7769 mm | 31.5 ft | - |
| Outside Body Width | 7123 mm | 29.75 ft | - |
| Inside Body Width | 6920 mm | 28.08 ft | - |
| Front Canopy Height | 6739 mm | 26.33 ft | - |
| Rear Axle - Clearance | 1263 mm | 3.08 ft | - |
| Centerline of Rear Dual Tire Width | 4695 mm | 18.75 ft | - |
| Overall Tire Width | 7120 mm | 28.67 ft | - |
| Front Axle Clearance | - | 3.17 ft | - |
| Canopy Width (without optional rock deflectors) | - | 29.75 ft | - |
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 | - |
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. | - |
Sound |
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| Sound Standards (1) | - | 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. | - |
| Sound Standards (2) | - | 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. | - |
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