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 794 AC Mining Truck |
 772G Off-Highway Truck |
 789 Next Generation |
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Weights - Approximate |
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| 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) | - | - |
Engine |
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| Gross Power - SAE J1995 | 3500 HP | 605 HP | - |
| Standard Gross Power - SAE J1995 | 3500 HP | - | - |
| Engine Model | Cat® C175-16 | Cat® C18 | Cat® 3516E |
| 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 |
| Bore | 6.9 in | 5.7 in | 6.7 in |
| Stroke | 8.7 in | 7.2 in | 8.5 in |
| Displacement | 5187 in³ | 1105 in³ | 4766 in³ |
| Note (1) | 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 (2) | Tier 4 / EU Stage V option available for regions that require these emissions standards. | - | Optional 1417 kW / 1,900 HP engine rating. |
| Note (3) | 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. |
| Rated Engine Speed | - | 1700 r/min | - |
| Rated Net Power - SAE J1349 | - | 550 HP | - |
| Number of Cylinders | - | 6 | - |
| Note | - | Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. | - |
| Gross Power - SAE J1995:2014 | - | - | 2100 HP |
| Net Power - SAE J1349:2011 | - | - | 1975 HP |
Final Drives |
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| Total Reduction Ratio | 35:01:00 | - | 25.46:1 |
| Planetary Ratio | - | - | 10.83:1 |
| Type | - | - | Double reduction, planetary with full floating axles |
| Differential Ratio | - | - | 2.35:1 |
Tires |
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| Standard Tires | 53/80 R63 | - | 37 R57 |
| Rims | 36" x 63" | - | 29” x 57” Rims |
| 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 |
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 | - | - |
Weight Distributions - Approximate |
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| Front Axle - Empty | 49 % | - | 50% |
| Rear Axle - Empty | 51 % | - | 50% |
| Front Axle - Loaded | 33 % | - | 33% |
| Rear Axle - Loaded | 67 % | - | 67% |
Body Hoists |
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| Pump Flow - High Idle (HAA at 1,800 rpm) | 221 gal/min | - | - |
| Pump Flow - High Idle (LAA at 1,960 rpm) | 240 gal/min | - | - |
| Relief Valve Setting - Raise | 3029 psi | - | 2749 psi |
| Body Raise Time - High Idle | 24 s | - | 14 s |
| 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. |
| Pump Flow - High Idle | - | - | 106.5 gal/min |
| Body Lower Time - Float | - | - | 16 s |
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. | - | - |
Service Refill Capacities |
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| Fuel Tank | 1300 gal (US) | - | 1000 gal (US) |
| Cooling System | 211 gal (US) | 33 gal (US) | 180 gal (US) |
| Crankcase | 82 gal (US) | 17 gal (US) | 77 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 Capacity | - | 140 gal (US) | - |
| Brake/Hoist Hydraulic Tank | - | 38 gal (US) | - |
| Brake Hoist System | - | 60 gal (US) | 169 gal (US) |
| Differential - Final Drives | - | 47 gal (US) | - |
| Steering System - Including Tank | - | 60 gal (US) | - |
| Torque Converter - Transmission System | - | 17 gal (US) | - |
| 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) |
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. | - | 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 | 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. |
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. | - | - |
Steering |
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| Steering Standards | ISO 5010:2007 | ISO 5010:2007 | ISO 5010:2007 |
| Note | Gross Machine Operating Weight is 521 631 kg (1,150,000 lb). | - | - |
| Steer Angle | 39 ° | 31 ° | 36.07 ° |
| Turning Diameter | - | 57.7 ft | - |
| Turning Circle - Clearance Diameter | - | 66.6 ft | - |
Weights |
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| LRC Bare Chassis Weight without Hoist | - | 58414 lb | - |
| LRC Bare Chassis Weight with Hoist | - | 59223 lb | - |
| LRC Gross Vehicle Weight (Target) with Hoist | - | 180999 lb | - |
| LRC Gross Vehicle Weight (Target) without Hoist | - | 180999 lb | - |
| HRC Bare Chassis Weight without Hoist | - | 59567 lb | - |
| HRC Bare Chassis Weight with Hoist | - | 60376 lb | - |
| HRC Gross Vehicle Weight (Target) with Hoist | - | 180999 lb | - |
| HRC Gross Vehicle Weight (Target) without Hoist | - | 180999 lb | - |
| Note | - | LRC model is offered for lesser regulated countries. HRC model is offered for highly regulated countries. U.S. EPA Tier 4 Final / EU Stage V available for applicable markets. | - |
ROPS |
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| Tractor ROPS | - | 77430 lb | - |
Operating Specifications |
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| Nominal Water Tank Capacity | - | 11000 gal (US) | - |
Transmission |
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| Forward - 1 | - | 8 mile/h | 7.8 mile/h |
| Forward - 2 | - | 10.9 mile/h | 10.6 mile/h |
| Forward - 3 | - | 14.8 mile/h | 14.4 mile/h |
| Forward - 4 | - | 19.8 mile/h | 19.4 mile/h |
| Forward - 5 | - | 26.9 mile/h | 26.3 mile/h |
| Forward - 6 | - | 36.2 mile/h | 35.5 mile/h |
| Forward - 7 | - | 49.2 mile/h | - |
| Reverse | - | 10.4 mile/h | 7.3 mile/h |
| Note | - | Maximum travel speeds with standard 21.00R33 (E4) tires. | - |
| Top Speed - Loaded | - | - | 35.5 mile/h |
Brakes |
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| Brake Surface - Front | - | 216 in² | - |
| Brake Surface - Rear | - | 7794 in² | - |
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 |
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 |
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