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.

Operating Specifications

Nominal Payload Capacity
400 ton (US)
Heaped SAE (2:1) Capacity
240-267 m³ (314-350 yd³)
Top Speed - Loaded
42 mile/h
Steer Angle
40 °
Machine Clearance Turning Diameter
138 ft


Engine Model
Cat® C175-20
Gross Power - SAE J1995
4000 HP
6.9 in
8.7 in
6469 in³
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.

Weights - Approximate

Target Gross Machine Operating Weight (GMW)
1375000 lb
Chassis Weight Range
210 630-219 146 kg (464,359-483,134 lb)
Body Weight Range
41 368-61 235 kg (91,200-135,000 lb)
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.


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

Body Hoists

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


Number of Discs per Side - Front
Number of Discs per Side - Rear
Outside Diameter
42 in
Brake Surface
51243 in²
ISO 3450:2011

Approximate Weights - MSD II

Front Axle - Empty
Front Axle - Loaded
Rear Axle - Empty
Rear Axle - Loaded

Weight Distributions - Approximate

Front Axle - Empty
Front Axle - Loaded
Rear Axle - Empty
Rear Axle - Loaded

Service Refill Capacities

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


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.

Capacity - MSD II - 100% Fill Factor

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


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

Final Drives

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


59/80R63 – Michelin or Bridgestone
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.


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


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.


Steering Standards
ISO 5010:2007