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797F Mining Truck

797F Mining Truck

Lowest Cost Per Ton in Its Size Class

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More Comfort – More Performance – More Versatility

  • 20% Lower Operating Costs

    Thanks to 25%+ lower maintenance costs, 35%+ lower cost of oils and lube, and reduced fuel usage

  • Up To 10% Lower Fuel Costs

    One of the most fuel-efficient trucks in the industry — in a variety of applications

  • Greater Than 90% Physical Availability

    High uptime thanks to lower maintenance ratios, longer component life and high reliability


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

Weights - Approximate

Body Weight 94799 lb
Chassis Weight 474472 lb
Nominal Rated Payload 400 ton (US)
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)
Rated Gross Machine Weight 1375000 lb

Weight Distributions - Approximate

Front Axle - Empty 47.20%
Front Axle - Loaded 33.30%
Note Weight distributions optimized with Cat body.
Rear Axle - Empty 52.80%
Rear Axle - Loaded 66.70%

Final Drives

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


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.
Rims 44" x 63"
Tires 59/80 R63

Braking System

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

Capacity - HP Body - 100% Fill Factor

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

Body Hoists

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


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

Service Refill Capacities

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


Air Conditioning HFC - 134A refrigerant: 24,300 Btu/h
FOPS Standards FOPS (Falling Objects Protective Structure) meets ISO 3449:1992 Level II criteria.
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 3471:1994 criteria.


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


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

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797F Technical Specifications
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