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798 AC Mining Truck

The Cat® 798 AC electric drive truck is designed to haul more ore — with more speed, more stability and more reliability than any other electric drive truck in the marketplace. And while it may be the newest addition to the Cat ultra-class lineup, it delivers the same powerful, proven performance you expect from a Cat truck. The 798 delivers a full 372-tonne (410-ton) payload, increased speed on grade, more retarding power than competitive trucks, superior brake performance and easier maintenance. The result? High availability, more confident operators and improved productivity.


Units: US Metric
Engine Model
Cat® C175-16
Gross Power - SAE J1995
3500 HP
2610 kW
Standard Gross Power - SAE J1995
3500 HP
2610 kW
Optional Gross Power - SAE J1995
3100 HP
2312 kW
Rated Speed
1800 r/min
1800 r/min
Net Power - SAE J1349
3405 HP
2539 kW
Emissions Rating
Fuel Optimized
8.7 in
220 mm
5187 in³
85 l
6.9 in
175 mm
Note (1)
Contact factory for high altitude configuration.
Weights - Approximate
Rated Gross Machine Weight
1375000 lb
623690 kg
Chassis Weight
450047 lb
204623 kg
Body Weight Range
39 043 – 47 873 kg (86,075 – 105,542 lb)
Note (1)
Consult your tire manufacturer for maximum tire load.
Note (2)
Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.
Note (3)
Body weight varies depending on how body is equipped.
Nominal Rated Payload
410 ton (US)
372 t
Operating Specifications
Top Speed - Loaded
40 mile/h
64 km/h
Steer Angle
39 °
39 °
Minimum Turning Radius
53 ft
16.2 m
Note (1)
Payload assumes no debris, no extra options or attachments.
Note (2)
Refer to the Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.
Final Drives
Total Reduction Ratio
AC Drive System
Brushless, engine mounted, dual bearing
IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Wheel Motor
Cat AC induction, rear axle mounted
Cooling System
Variable speed, hydraulically driven cooling system
Standard Tires
59/80 R63.
Note (1)
Production capabilities of the 798 AC truck are such that, under certain job conditions, TKPH (TMPH) capabilities could be exceeded and, therefore, limit production.
Note (2)
Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection.
Braking System
Front Wet Disc Brake Surface Area
20378 in²
131473 cm²
Rear - Wet Disc Brake Surface Area
30750 in²
198388 cm²
ISO 3450:2011
Electric Retarding
Radial Grid Design
Dynamic Retarding Power - Continuous
5480 HP
4086 kW
Weight Distributions - Approximate
Front Axle - Empty
47 %
47 %
Rear Axle - Empty
53 %
53 %
Front Axle - Loaded
33 %
33 %
Rear Axle - Loaded
67 %
67 %
Capacity - HE Body - 100% fill factor
126.4-187.2 m³ (165-245 yd³)
Heaped (SAE 2:1)
215.4-266 m³ (282-348 yd³)
Dump Body Plate Thickness Varies Depending on Body Selection - Floor Plate
1 in
25.4 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Front Plate
0.5 in
12.7 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Side Plate
0.38 in
9.5 mm
Dump Body Plate Thickness Varies Depending on Body Selection - Canopy Plate
0.2 in
5 mm
Contact your local Cat dealer for body recommendations.
Service Refill Capacities
Cooling System
211 gal (US)
799 l
82 gal (US)
310 l
Final Drive - Each
67 gal (US)
254 l
Hydraulic Tank
296 gal (US)
1121 l
Hydraulic System - Including Tank
385 gal (US)
1458 l
ROPS Standards
ROPS (Rollover Protective Structure) cab offered by Caterpillar meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer.
FOPS Standards
FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 for Operator and ISO 13459:2012 Level II FOPS criteria for Trainer.
Sound Standards (1)
The operator sound pressure level measured according to work cycle procedures specified in ISO 6394:2008 and ISO 6396:2008 is 75 dB(A) for cab offered by Caterpillar when properly installed, 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
Rated Gross Machine Weight is 623 690 kg (1,375,000 lb).
Service Refill Capacities
Fuel Tank
1300 gal (US)
4922 l
Dimensions (Approximate)
Height - Top of ROPS
22.12 ft
6742 mm
Overall Length
51.59 ft
15724 mm
Wheel Base
21.84 ft
6658 mm
Rear Axle - Tail
16.13 ft
4916 mm
Ground Clearance
3.37 ft
1026 mm
Dump Clearance
5.94 ft
1809 mm
Loading Height - Empty
25.75 ft
7850 mm
Overall Height - Body Raised
49.25 ft
15011 mm
Centerline Front Tire Width
23.04 ft
7024 mm
Front Axle Clearance
3.37 ft
1026 mm
Canopy Width (without optional rock deflectors)
31.62 ft
9638 mm
Outside Body Width
31.62 ft
9638 mm
Inside Body Width
30.05 ft
9160 mm
Front Canopy Height
26 ft
7928 mm
Rear Axle - Clearance
3.59 ft
1094 mm
Centerline of Rear Dual Tire Width
19.5 ft
5943 mm
Overall Tire Width
30.32 ft
9243 mm
Standard Equipment