797F Mining Truck

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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

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)


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

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)
103 gal (US)
Front Wheels - Each
16 gal (US)
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.

Body Hoists

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


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

Capacity - HP Body - 100% Fill Factor

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

Weight Distributions - Approximate

Front Axle - Empty
Rear Axle - Empty
Front Axle - Loaded
Rear Axle - Loaded
Weight distributions optimized with Cat body.


59/80 R63
44" x 63"
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
Service and Secondary: ISO 3450:2011
Parking Brake
Four-corner, Multi-disc, Spring Applied, Hydraulically Released
Load Brake
Rear service brakes
Anti-Lock Brake System (ABS) optional with CMD package

Final Drives

Double reduction, planetary with full floating axles.
Differential Ratio
Planetary Ratio
Total Reduction Ratio
Double reduction, planetary with full floating axles.


Air Conditioning
HFC - 134A refrigerant: 24,300 Btu/h
Heater / Defroster
38900 Btu/h
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
Turning Diameter (ISO 7457:2009)


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
7.4 mile/h
Top Speed - Loaded
39.5 mile/h


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
Loaded Ground Clearance
2.58 ft
Loading Height - Empty
23 ft
Overall Height - Body Raised
51.5 ft
Rear Axle - Clearance - Loaded
3.08 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