New CAT Equipment

797F Mining Truck

Whether you're hauling copper, coal, gold, iron ore or overburden the 797F provides you with the best in class cost per unit of production. Including the improvements in safety, productivity, serviceability and comfort you will see why the 797F is the industry leader of its class. Combine these features with unmatched dealer support and you will see why more mine sites choose Cat Mining Trucks for their production needs.

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Learn more about the 797F Mining Truck


Product Specs


Gross Power - SAE J1995 4000 HP
Engine Model Cat® C175-20
Net Power - SAE J1349 3795 HP
Rated Speed 1750 r/min
Emissions U.S. EPA Compliant. Where applicable, the Cat C175-20 engine is compliant with U.S. EPA emission standards.Tier 4 engine option available to meet Tier 4 Final emission standards.
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) U.S. EPA Tier 4 Final available for applicable markets.
Note (3) High Altitude Low Maintenance Ratio Engine Configuration (4x4) option available.

Weights - Approximate

Nominal Rated Payload 401 ton (US)
Rated Gross Machine Weight 1375000 lb
Chassis Weight 474472 lb
Body Weight 94799 lb
Note (1) 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.
Note (4) Tier 4 Chassis Weight: 486263 lb (220565 kg)

Weight Distributions - Approximate

Front Axle - Empty 47.2%
Rear Axle - Empty 52.8%
Front Axle - Loaded 33.3%
Rear Axle - Loaded 66.7%
Note Weight distributions optimized with Cat body.

Final Drives

Type Double reduction, planetary with full floating axles.
Differential Ratio 1.276:1
Planetary Ratio 16.67:1
Total Reduction Ratio 21.26:1
Note Double reduction, planetary with full floating axles.


Forward - 1 6.6 mile/h
Forward - 2 8.9 mile/h
Forward - 3 12 mile/h
Forward - 4 16.2 mile/h
Forward - 5 21.8 mile/h
Forward - 6 29.4 mile/h
Forward - 7 39.5 mile/h
Reverse 7.4 mile/h
Top Speed - Loaded 39.5 mile/h


Tires 59/80 R63
Rims 44" x 63"
Note Quick Change Rims optional.
Note (1) Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.

Braking System

Service Brakes Service Brakes: Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area 20500 in²
Rear - Wet Disc Brake Surface Area 30750 in²
Standards Service and Secondary: ISO 3450:2011
Parking Brake Four-corner, Multi-disc, Spring Applied, Hydraulically Released
Load Brake Rear service brakes
Note Anti-Lock Brake System (ABS) optional with CMD package

Capacity - HP Body - 100% Fill Factor

Struck 225 yd³ / 172 m³
Heaped (SAE 2:1)* 330 yd³ / 252 m³
Note (1) Consult your local Cat dealer for body recommendations.

Body Hoists

Type Twin, two-stage hydraulic cylinders with snubbing valve.
Pump Flow - High Idle 317 gal/min
Relief Valve Setting - Raise 3510 psi
Body Raise Time - High Idle 25 s
Body Lower Time - Float 18 s
Body Power Down- High Idle 18 s


Type Self-contained nitrogen/oil cylinders, rear strut pin-to-pin mounting, top & bottom double shear clevis attachments
Effective Cylinder Stroke - Front 3.9 in
Effective Cylinder Stroke - Rear 3.7 in
Rear axle - Oscillation ±3.96 degrees

Service Refill Capacities

Fuel Tank 1000 gal (US)
Fuel Tank (Tier 4) 1200 gal (US)
Diesel Exhaust Fluid Tank 100 gal (US)
Cooling System 306 gal (US)
Crankcase 103 gal (US)
Front Wheels - Each 16 gal (US)
Differentials 330 gal (US)
Steering Tank 67 gal (US)
Steering System - Including Tank 95 gal (US)
Brake/Hoist Tank 203 gal (US)
Brake Hoist System - Includes Tank 489 gal (US)
Torque Converter Sump 80 gal (US)
Torque Converter/Transmission System - Including Sump 166 gal (US)
Note (1) DEF Tank only available for EPA Tier 4 engine option.


Air Conditioning HFC - 134A refrigerant: 24,300 Btu/h
Heater / Defroster 38900 Btu/h
Note Ambient capabilities down to -30C (-22F) for heater/defroster and up to 50C (122F) for air conditioning.
ROPS Standards (1) The operator sound pressure level, 76 dB(A), complies with ISO 6394:2008 and ISO 6396:2008.
ROPS Standards (2) ROPS (Rollover Protective Structure) meets ISO 3471:2008 criteria.
FOPS Standards FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II criteria.


Steering Angle 40 °
Turning Diameter - Front 122.7 ft
Steering Standards ISO 5010:2007
Note Turning Diameter (ISO 7457:2009)


Rear Axle - Clearance - Loaded 3.08 ft
Inside Body Depth - Maximum 11 ft
Overall Height - Body Raised 51.5 ft
Loaded Ground Clearance 2.58 ft
Loading Height - Empty 23 ft
Engine Guard Clearance - Loaded 3.33 ft
Height - Top of ROPS - Empty 21.4 ft
Front Canopy Height - Empty 25.33 ft
Overall Body Length 48.6 ft
Inside Body Length 32.75 ft
Overall Length 49.5 ft
Wheel Base 23.58 ft
Rear Axle - Tail 12.9 ft
Dump Clearance 6.58 ft
Centerline Front Tire Width 21.41 ft
Overall Canopy Width 29.91 ft
Outside Body Width 32 ft
Inside Body Width 27.91 ft
Centerline of Rear Dual Tire Width 20.41 ft
Overall Tire Width 31.25 ft