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794 AC Mining Truck
798 AC Electric Drive Mining Truck
789 Next Generation

Weights - Approximate

Nominal Rated Payload 327 ton (US) 410 ton (US) 213 ton (US)
Rated Gross Machine Weight 1150000 lb 1375000 lb 715000 lb
Chassis Weight 426237 lb 453826 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. 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 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) Refer to Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations. Body weight varies depending on how body is equipped. -
Note (4) Tier 4 Final / Stage V chassis weight: 426312 lb (193372 kg) - -
Body Weight Range - 38 833 - 43 275 kg (85,611 - 95,406 lb) -

Engine

Gross Power - SAE J1995 3500 HP 3500 HP -
Standard Gross Power - SAE J1995 3500 HP - -
Engine Model Cat® C175-16 Cat® C175-16 Cat® 3516E
Optional Gross Power - SAE J1995 3100 HP 3100 HP -
Optional Gross Power - SAE J1995 (Option 2) 2750 HP - -
Rated Speed 1800 r/min 1800 r/min 1650 r/min
Net Power - SAE J1349 3405 HP 3405 HP -
Emissions Rating Fuel Optimized Fuel Optimized Fuel Optimized
Bore 6.9 in 6.9 in 6.7 in
Stroke 8.7 in 8.7 in 8.5 in
Displacement 5187 in³ 5187 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. 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. U.S. EPA Tier 4 Final / EU Stage V available for applicable markets. 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) 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

Final Drives

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

Standard Tires 53/80 R63 59/80 R63 37 R57
Rims 36" x 63" 44" x 63" Rims 29” x 57” Rims
Note (1) Quick Change Rims optional. 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. 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

Total Reduction Ratio 35:01:00 35:01:00 -
Top Speed - Loaded 37 mile/h 40 mile/h -
Generator/Alternator Brushless, engine mounted, dual bearing Brushless, engine mounted, dual bearing -
Controls IGBT Inverter Technology, air cooled, pressurized cabinet with filtration IGBT Inverter Technology, air cooled, pressurized cabinet with filtration -
Wheel Motor High-torque AC induction, rear axle mounted Cat high-torque AC induction, rear axle mounted -
Cooling System Variable speed, hydraulically driven cooling system Cat variable speed, hydraulically driven cooling system -

Braking System

Service Brakes Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area 20378 in² 22642 in² 12662 in²
Rear - Wet Disc Brake Surface Area 30750 in² 32730 in² 20861 in²
Standards ISO 3450:2011 Service and Secondary: 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 Rear service brakes -
Dynamic Retarding Power - Continuous 5480 HP 5480 HP -
Electric Retarding - Radial Grid Design -
Parking Brakes - Four-corner, Multi-disc, Spring Applied, Hydraulically Released -
Note - Anti-Lock Brake System (ABS) optional with CMD package -

Weight Distributions - Approximate

Front Axle - Empty 49 % 47 % 50%
Rear Axle - Empty 51 % 53 % 50%
Front Axle - Loaded 33 % 33 % 33%
Rear Axle - Loaded 67 % 67 % 67%
Note - Weight distributions optimized with Cat body. -

Body Hoists

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 3029 psi 2749 psi
Body Raise Time - High Idle 24 s 21 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. Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages. -
Note (2) Power raise in both stages; power down in both stages possible. Power raise in both stages; power down capability in both stages. -
Note (3) Automatic body-lower modulation reduces impact on frame. Automatic body-lower modulation reduces impact on frame. -
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
Body Lower Time - Float - 22 s 16 s
Body Power Down- High Idle - 17.5 s -

Capacity - HE Body - 100% fill factor

Struck 108-133 m³ (142-175 yd³) 129-200 m³ (168-261 yd³) -
Heaped (SAE 2:1) 180-222 m³ (236-290 yd³) 218-276 m³ (285-361 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. Contact your local Cat dealer for body recommendations. -

Service Refill Capacities

Fuel Tank 1300 gal (US) 1300 gal (US) 1000 gal (US)
Cooling System 211 gal (US) 211 gal (US) 180 gal (US)
Crankcase 82 gal (US) 82 gal (US) 77 gal (US)
Final Drive - Each 67 gal (US) 67 gal (US) -
Hydraulic Tank 296 gal (US) 296 gal (US) -
Hydraulic System - Including Tank 385 gal (US) 385 gal (US) -
Diesel Exhaust Fluid Tank 100 gal (US) 100 gal (US) 62 gal (US)
Note (1) DEF Tank only available for EPA Tier 4 / EU Stage V engine option. DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option -
Fuel Tank (Tier 4) - 1200 gal (US) 55 gal (US)
Grease Tank - 90 lb -
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)

Dimensions (Approximate)

Height - Top of ROPS 22.25 ft 22.1 ft 5550 mm
Overall Length 50.75 ft 51.44 ft 12970 mm
Wheel Base 21.83 ft 21.9 ft 57000 mm
Rear Axle - Tail 15.5 ft 16.07 ft 3856 mm
Ground Clearance 2.67 ft - 1304 mm
Dump Clearance 3 ft - 1585 mm
Loading Height - Empty 22.92 ft 25.54 ft 6147 mm
Overall Height - Body Raised 48.42 ft 48.85 ft 11534 mm
Centerline Front Tire Width 23 ft 23.06 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 29.44 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 19.5 ft 4695 mm
Overall Tire Width 28.67 ft - 7120 mm
Overall Canopy Width 31.5 ft - 7769 mm
Dump Clearance - Empty - 5.72 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 -
Front Canopy Height - Empty - 26.01 ft -
Rear Axle Clearance - Loaded - 2.8 ft -
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
Rear Sidewall Height - - 1010 mm
Inside Body Depth - Maximum - - 3075 mm
Operating Width - - 7822 mm
Engine Guard Clearance - - 1290 mm

Cab

ROPS Standards (1) Rollover Protective Structure (ROPS) meets ISO 3471:2008 criteria for operator and ISO 13459:2012 for trainer. 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 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. 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: 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 (2) - - ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer.

Sound

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. - -
Sound Standards - The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008. -

Steering

Steering Standards ISO 5010:2007 Steering Standards: ISO 5010:2007 ISO 5010:2007
Note Gross Machine Operating Weight is 521 631 kg (1,150,000 lb). Turning Diameter (ISO 7457:1997) -
Steer Angle 39 ° 39 ° 36.07 °
Turning Diameter - Front - 106.3 ft -

Service Refill Capacities - High Altitude Only

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) -

Suspension

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

Engine - High Altitude Only

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 -

Transmission

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

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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