797F Mining Truck

Overview
Nominal Payload Capacity
400 tons
Engine Model
Cat® C175-20
Gross Power - SAE J1995
4,000 hp
  • Exterior View
  • Interior View

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

Engine

Engine Model
Cat® C175-20
Gross Power - SAE J1995
4,000 hp
Bore
7 in
Stroke
9 in
Displacement
6,469 in3
Note
Power ratings apply at 1,750 rpm when tested under the specific conditions for the specified standard.
Note
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
No low altitude arrangement (LAA) engine derating required up to 2134 m (7,000 ft) altitude.
Note
No high altitude arrangement (HAA) engine derating required up to 4877 m (16,000 ft) altitude.
Emissions
U.S. EPA Compliant. Where applicable, the Cat C175-20 engine is compliant with U.S. EPA emission standards.
Engine Model
Cat® C175-20
Gross Power - SAE J1995
4,000 HP
Bore
7 in
Stroke
9 in
Displacement
6,469 in³
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).
Emissions
U.S. EPA Compliant. Where applicable, the Cat C175-20 engine is compliant with U.S. EPA emission standards.
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)
1,375,000 lb
Note
Refer to the Cat Mining Truck 10/10/20 Payload Policy for maximum gross machine weight limitations.
Note
Body weight varies depending on body and liner configuration. Weight range for known applications.
Note
Chassis weight with 100 percent fuel, hoist, body mounting group, rims and tires.

Transmission

Forward 1
7 mph
Forward 2
10 mph
Forward 3
13 mph
Forward 4
17 mph
Forward 5
23 mph
Forward 6
31 mph
Forward 7
42 mph
Reverse
7 mph
Forward - 1
7 mile/h
Forward - 2
10 mile/h
Forward - 3
13 mile/h
Forward - 4
17 mile/h
Forward - 5
23 mile/h
Forward - 6
31 mile/h
Forward - 7
42 mile/h
Reverse
7 mile/h

Final Drives

Differential Ratio
1.276:1
Planetary Ratio
16.67:1
Total Reduction Ratio
21.26:1
Note
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.

Suspension

Effective Cylinder Stroke – Front
12 in
Effective Cylinder Stroke – Rear
7 in
Rear Axle Oscillation
±4.0 degrees
Rear axle - Oscillation
±4.0 degrees
Effective Cylinder Stroke - Front
12 in
Effective Cylinder Stroke - Rear
7 in

Brakes

Number of Discs per Side – Front
10
Number of Discs per Side – Rear
15
Standards
ISO 3450:2011
Outside Diameter
42 in
Brake Surface
51,243 in²
Standards
ISO 3450:2011
Number of Discs per Side - Front
10
Number of Discs per Side - Rear
15

Body Hoists

Pump Flow – High Idle
317 gal/min
Relief Valve Setting – Raise
3,510 psi
Body Raise Time – High Idle
25 Seconds
High Idle Body Lower Time - Float
19 s
Body Raise Time - High Idle
25 s
Pump Flow - High Idle
317 gal/min
Relief Valve Setting - Raise
3,510 psi

Service Refill Capacities

Fuel Tank
1,000 gal
Cooling System
306 gal
Crankcase
84 gal
Steering Tank
67 gal
Steering System (Includes Tank)
94 gal
Brake/Hoist System (Includes Tank)
441 gal
Differentials
311 gal
Final Drives, Each
49 gal
Brake/Hoist Hydraulic Lines
219 gal (US)
Brake/Hoist Tank
203 gal (US)
Front Wheels - Each
16 gal (US)
Torque Converter Sump
80 gal (US)
Torque Converter/Transmission System - Including Sump
166 gal (US)
Cooling System
306 gal (US)
Crankcase
84 gal (US)
Steering Tank
67 gal (US)
Steering System - Including Tank
94 gal (US)
Brake Hoist System - Includes Tank
441 gal (US)
Differentials
311 gal (US)
Final Drive - Each
49 gal (US)
Fuel Tank
1,000 gal (US)

Weight Distributions – Approximate

Front Axle – Loaded
33.3%
Rear Axle – Loaded
66.7%
Front Axle – Empty
47.2%
Rear Axle – Empty
52.8%

Approximate Weights – MSD II

Front Axle – Empty
47.2%
Front Axle – Loaded
33.3%
Rear Axle – Empty
52.8%
Rear Axle – Loaded
66.7%

Capacity – MSD II – 100% Fill Factor

Heaped (SAE 2:1)
240-267 m3 (314-350 yd3)
Struck
188-213 m3 (246-290 yd3)

Dimensions

Overall Body Length
49 ft
Inside Body Length
33 ft
Overall Length
50 ft
Wheelbase
24 ft
Rear Axle to Tail
13 ft
Dump Clearance
7 ft
Loading Height – Empty
23 ft
Inside Body Depth – Maximum
11 ft
Overall Height – Body Raised
52 ft
Centerline Front Tire Width
21 ft
Engine Guard Clearance – Loaded
3 ft
Overall Canopy Width
30 ft
Outside Body Width
32 ft
Inside Body Width
28 ft
Rear Axle Clearance – Loaded
3 ft
Centerline Rear Dual Tire Width
20 ft
Overall Tire Width
31 ft
Front Canopy Height - Empty
25 ft
Loaded Ground Clearance
3 ft
Height - Top of ROPS - Empty
21 ft
Inside Body Depth - Maximum
11 ft
Engine Guard Clearance - Loaded
3 ft
Loading Height - Empty
23 ft
Overall Height - Body Raised
52 ft
Rear Axle - Clearance - Loaded
3 ft
Overall Body Length
49 ft
Inside Body Length
33 ft
Overall Length
50 ft
Wheel Base
24 ft
Rear Axle - Tail
13 ft
Dump Clearance
7 ft
Centerline Front Tire Width
21 ft
Overall Canopy Width
30 ft
Outside Body Width
32 ft
Inside Body Width
28 ft
Centerline of Rear Dual Tire Width
20 ft
Overall Tire Width
31 ft

ROPS

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.
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.

Sound

Sound Standards
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
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.
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

Steering Standards
ISO 5010:2007
Steering Standards
ISO 5010:2007

Tires

Tire
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.
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.

Weights - Approximate

Body Weight Range
41 368-61 235 kg (91,200-135,000 lb)
Chassis Weight Range
210 630-219 146 kg (464,359-483,134 lb)
Target Gross Machine Operating Weight (GMW)
1,375,000 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.

Capacity - MSD II - 100% Fill Factor

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

Approximate Weights - MSD II

Front Axle - Empty
47.2%
Front Axle - Loaded
33.3%
Rear Axle - Empty
52.8%
Rear Axle - Loaded
66.7%

Weight Distributions - Approximate

Front Axle - Empty
47.2%
Front Axle - Loaded
33.3%
Rear Axle - Empty
52.8%
Rear Axle - Loaded
66.7%

Power Train – Engine

Power Train – Transmission

Engine/Power Train Integration

Cat Braking System

Truck Body Systems

Structures

Operator's Station

Monitoring System

Safety

Sustainability

Customer Support

Serviceability

  • Electrical
    • Alarm, back-up
    • Brushless, alternator, 150 ampere
    • Batteries, 12V (2) 93 amp-hour
    • Converter, 12V electrical
    • Electrical system, 24V, 10, 20 and 25 amp
    • Battery charge receptacle
    • Lighting system:
      – Back-up and hazard lights
      – Directional signals (front, rear LED)
      – Front stair access/Service deck
      – Stop/tail lights (LED)
      – Engine compartment
      – VIMS, blue light (LED)
      – Headlights with lo-hi beam selector
  • Operator Environment
    • Standard cab:
      – Standard optimized operator seats
      – Suspension trainer seat
      – Flip down front visor
      – Standard side of cab access
    • Deluxe cab:
      – Heated and ventilated seats
      – Suspension trainer seat
      – Retractable front visor
      – Rear of cab access and standard side of cab access
      – Power windows
    • Deluxe cold weather cab:
      – Heated and ventilated seats
      – Suspension trainer seat
      – Retractable front visor
      – Rear of cab access and standard side of cab access
      – Power windows
      – Heated mirrors
    • All cab options include the following features:
      • Air conditioner with automatic climate control
      • 12V DC power supply (3)
      • Coat hook
      • Diagnostic connection port
      • Dome courtesy light
      • Entertainment radio ready 5 amp converter, speakers and wiring harness
      • Gauges/Indicators:
        – Gauge panel: Transmission fluid temperature; Brake oil temperature; Engine coolant temperature; Fuel level; Torque converter oil temperature
        – Electric engine control fault indicator
        – Electric hour meter
        – Speedometer
        – Tachometer
        – Transmission gear indicator
        – VIMS message center with advisor
      • Heater/defroster (11 070 kCal/43,930 Btu)
      • Horn
      • Cat Detect System
      • Storage compartments
      • Hoist, body control (electric)
      • ROPS cab, insulated/sound suppressed
      • Seat, operator, air suspension
      • Seatbelt, operator, three-points, retractable
      • Seat, trainer, air suspension
      • Seatbelt, trainer, two-points, retractable
      • Stairway and walkway access, 600 mm (23.6 in)
      • Steering wheel, multi tilt, padded, telescopic
      • Tinted glass
      • Window, operator, electric powered
      • Windshield wiper, intermittent control and washer
      • Cup holder
      • Mirrors, right and left
  • Power Train
    • C175-20 emits equivalent to Tier 2 emission standards:
      – Turbocharging (4)/Air-to-Air Aftercooler (ATAAC)
      – Air cleaner with precleaner (4)
      – Ground level engine shutdown
      – Ether starting aid (automatic)
      – Elevated low idle control
      – Crankcase protection
      – Multi-point oil pressure sensing
      – Automatic starter protection
    • Braking system:
      – Park brake integrated with gear selector
      – Brake release motor (towing)
      – Oil-cooled, multi-disc (front and rear) – service, retarding, parking, secondary
      – Automatic Retarder Control, adjustable
      – Engine overspeed protection
      – Extended life brake disc material
    • Transmission:
      – 7-speed, automatic powershift with electronic controls (ECPC)
      – Body-up shift inhibitor
      – Controlled throttle shifting
      – Directional shift management
      – Neutral coast inhibitor
      – Neutral start switch
      – Downshift/Reverse shift inhibitor
      – Individual clutch modulation
      – Body-up reverse neutralizer
      – Programmable top speed
      – Lock-up torque converter
    • Pre-lubrication/engine
    • Rear axle continuous lubrication/filtration
  • Other Standard Equipment
    • Traction Control System
    • Auto lubrication system
    • Aux “buddy” dumping quick connect
    • Aux steering quick connect (towing)
    • Driveline guard
    • Fast fill fuel system
    • Fuel filter with water separator
    • Ground level VIMS data port
    • Ground level battery lockout
    • Ground level transmission lockout
    • Ground level engine start lockout
    • Ground level engine shut-down
    • High-speed crankcase oil change
    • Reservoirs (3 separate):
      – Brake/Hoist, Steering/Fan, Transmission/Converter
    • Rock ejectors
    • Supplemental steering (automatic)
    • Tie-down eyes
    • Center hitch and tow points (front), tow pin (rear)
    • Vandalism protection locks
    • Vital Information Management System (VIMS):
      – Includes VIMS Payload Monitor with max payload and speed manager
    • Hydraulic filters, 1,000 hour
    • S·O·S sample ports
    • Service points, ground level
    • Sight level gauges for hydraulic/engine oil
  • Antifreeze
    • Extended Life Coolant to –35° C (–30° F)
  • Optional Equipment
    • Cat Detect System
    • Cabin air precleaner
    • Throttle lock
    • Engine delay shutdown timer
    • Antifreeze/coolant protects to –50° C (–58° F)
    • Fuel tank (7570 L/2,000 gal)
    • SL-V grease injectors
    • Body heat
    • Rear axle lubrication cooler
    • External digital payload display
    • Oil renewal system
    • Oil renewal system with 3 day tank
    • Engine coolant and oil heater for cold weather starts
    • Road Analysis Control (RAC)
    • Portable fire extinguisher
    • Torque converter guard
    • Brake wear indicator gauge
    • Rims (wedge)
    • Rim guard

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