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797F Mining Truck

797F Mining Truck

At a Glance

Nominal Rated Payload
401 ton (US)
Engine Model
Cat® C175-20
Gross Power - SAE J1995
4000 HP
Gross Power - SAE J1995:2015
4000 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
Body Weight Range 41 368-61 235 kg (91,200-135,000 lb)
Chassis Weight 486263lb
Note (1) Refer to the Cat Mining Truck 10/10/20 Payload Policy for maximum gross machine weight limitations.
Note (2) Body weight varies depending on body and liner configuration. Weight range for known applications.
Note (3) Chassis weight with 100 percent fuel, hoist, body mounting group, rims and tires.


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Engine Model Cat® C175-20
Gross Power - SAE J1995 4000HP
Gross Power - SAE J1995:2015 4000HP
Net Power - SAE J1349:2011 3887HP
Bore 6.9in
Stroke 8.7in
Displacement 6469in³
Emissions U.S. EPA Compliant. Where applicable, the Cat C175-20 engine is compliant with U.S. EPA emission standards.
Note (1) Power ratings apply at 1,750 rpm when tested under the specific conditions for the specified standard.
Note (2) Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 99 kPa (29.32 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (69° F) and an LHV of 42 780 kJ/kg (18,390 Btu/lb) when engine is used at 30° C (38° F).
Note (3) No low altitude arrangement (LAA) engine derating required up to 2134 m (7,000 ft) altitude.
Note (4) No high altitude arrangement (HAA) engine derating required up to 4877 m (16,000 ft) altitude.


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Number of Discs per Side - Front 10
Number of Discs per Side - Rear 15
Brake Surface 51243in²
Standards ISO 3450:2011


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Effective Cylinder Stroke - Front 12.3in
Effective Cylinder Stroke - Rear 6.5in
Rear axle - Oscillation ±4.0 degrees

Body Hoists

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Pump Flow - High Idle 317gal/min
Relief Valve Setting - Raise 3510psi
Body Raise Time - High Idle 25s
High Idle Body Lower Time - Float 19s

Approximate Weights - HP Body

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Front Axle - Empty 47.20%
Front Axle - Loaded 33.30%
Rear Axle - Empty 52.80%
Rear Axle - Loaded 66.70%

Approximate Weights - MSD II

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Front Axle - Empty 47.20%
Front Axle - Loaded 33.30%
Rear Axle - Empty 52.80%
Rear Axle - Loaded 66.70%

Weight Distributions - Approximate

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Front Axle - Empty 47.20%
Rear Axle - Empty 52.80%
Front Axle - Loaded 33.30%
Rear Axle - Loaded 66.70%

Capacity - 100% Fill Factor

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Struck 188-213 m³ (246-290 yd³)
Heaped 2:1 Capacity - ISO 6483:1980 240-267 m³ (314-350 yd³)
Note Consult your local Cat dealer for truck body recommendations.

Service Refill Capacities

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Fuel Tank 1000gal (US)
DEF Tank 99gal (US)
Cooling System 306gal (US)
Crankcase 84gal (US)
Front Wheels - Each 16gal (US)
Final Drive - Each 49gal (US)
Differentials 311gal (US)
Steering Tank 67gal (US)
Steering System - Including Tank 94gal (US)
Brake/Hoist Hydraulic Lines 219gal (US)
Brake Hoist System - Includes Tank 441gal (US)
Brake/Hoist Tank 203gal (US)
Torque Converter Sump 80gal (US)
Torque Converter/Transmission System - Including Sump 166gal (US)


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ROPS Standards ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
FOPS Standards FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.


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Steer Angle 40°
Steering Standards ISO 5010:2007


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

Braking System

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Outside Diameter 42in

Dimensions (All dimensions are approximate. Dimensions are with body 507-1580.)

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Height to Top of ROPS - Empty 21.41ft
Overall Body Length 51.13ft
Inside Body Length 32.75ft
Overall Length 51.13ft
Wheelbase 23.61ft
Rear Axle to Tail 12.94ft
Loaded Ground Clearance 2.58ft
Dump Clearance 5.8ft
Loading Height - Empty 22.25ft
Inside Body Depth - Maximum 11ft
Overall Height - Body Raised 50.8ft
Centerline Front Tire Width 21.44ft
Engine Guard Clearance - Loaded 3.36ft
Outside Body Width 34.1ft
Overall Canopy Width 34.1ft
Inside Body Width 29.65ft
Front Canopy Height - Empty 25ft
Rear Axle Clearance - Loaded 3.11ft
Overall Tire Width 31.25ft

Capacity - MSD II - 100% Fill Factor

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Struck 188-213 m³ (246-290 yd³)
Heaped (SAE 2:1) 240-267 m³ (314-350 yd³)
Note Consult your local Cat dealer for truck body recommendations.


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Forward - 1 7mile/h
Forward - 2 9.5mile/h
Forward - 3 12.7mile/h
Forward - 4 17.2mile/h
Forward - 5 23.1mile/h
Forward - 6 31.2mile/h
Forward - 7 42mile/h
Reverse 7.4mile/h
Top Speed - Loaded 42mile/h

Final Drives

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


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Tires 59/80R63 – Michelin or Bridgestone
Note Productive capabilities of the 797F are such that, under certain job conditions, TKPH (TMPH) capabilities of standard tires could be exceeded and, therefore, limit production.


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Sound Standards (1) The operator sound pressure level measured according to work cycle procedures specified in ISO 6394:2008 and 6396:2008 is 76 dB(A) for cab offered by Caterpillar when properly installed and 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.