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797F Mining Truck

797F Mining Truck

At a Glance

Nominal Rated Payload
401 ton (US)
Rated Gross Machine Weight
1375000 lb
Gross Power - SAE J1995
4000 HP
Net Power - SAE J1349
3795 HP
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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.

Weights - Approximate

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Nominal Rated Payload 401ton (US)
Rated Gross Machine Weight 1375000lb
Chassis Weight 474472lb
Body Weight 94799lb
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)


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Gross Power - SAE J1995 4000HP
Net Power - SAE J1349 3795HP
Engine Model Cat® C175-20
Rated Speed 1750r/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 6.9in
Stroke 8.7in
Displacement 6469in³
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.

Service Refill Capacities

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

Body Hoists

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


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

Weight Distributions - Approximate

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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.


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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.

Final Drives

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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.

Braking System

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Service Brakes Service Brakes: Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area 20500in²
Rear - Wet Disc Brake Surface Area 30750in²
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

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


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Air Conditioning HFC - 134A refrigerant: 24,300 Btu/h
Heater / Defroster 38900Btu/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.


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


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


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