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Caterpillar 798 AC Off-Highway Truck Specs

General Specifications

Caterpillar 798 AC Off-Highway Truck General Specifications specifications
Articulated/Rigid Rigid - Starting 2024
Drive Configuration 2WD - Starting 2024
Engine Type Cat C175-16 - Starting 2024
Mfg. Model 798 AC - Starting 2024
Operating Weight 1,375,000.00 lbs (623,690.28 kg) - Starting 2024
Planetary Powershift Transmission Auto - Starting 2024
Rated Payload 410.00 t (410,000.00 kg) - Starting 2024

Ac Drive System

Caterpillar 798 AC Off-Highway Truck Ac Drive System specifications
Controls IGBT Inverter Technology, air cooled, pressurized cabinet with filtration - Starting 2026
Cooling System Cat variable speed, hydraulically driven cooling system - Starting 2026
Generator/Alternator Brushless, engine mounted, dual bearing - Starting 2026
Top Speed - Loaded 40.00 mph (64.37 kph) - Starting 2026
Total Reduction Ratio 35:01:00 - Starting 2026
Wheel Motor Cat high-torque AC induction, rear axle mounted - Starting 2026

Body Hoists

Caterpillar 798 AC Off-Highway Truck Body Hoists specifications
Body Lower Time - Float 22 s - Starting 2026
Body Power Down- High Idle 17.5 s - Starting 2026
Body Raise Time - High Idle 21 s - Starting 2026
Pump Flow - High Idle 257.30 gpm (973.88 lpm) - Starting 2026
Relief Valve Setting - Raise 3029 psi - Starting 2026
Type Twin, two-stage hydraulic cylinders with snubbing valve. - Starting 2026

Braking System

Caterpillar 798 AC Off-Highway Truck Braking System specifications
Dynamic Retarding Power - Continuous 5,480.00 hp (4,086.50 kw) - Starting 2026
Electric Retarding Radial Grid Design - Starting 2026
Front Wet Disc Brake Surface Area 22642 in² - Starting 2026
Load Brake Rear service brakes - Starting 2026
Parking Brakes Four-corner, Multi-disc, Spring Applied, Hydraulically Released - Starting 2026
Rear - Wet Disc Brake Surface Area 32730 in² - Starting 2026
Service Brakes Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated - Starting 2026
Standards Service and Secondary: ISO 3450:2011 - Starting 2026

Cab

Caterpillar 798 AC Off-Highway Truck Cab specifications
Air Conditioning HFC - 134A refrigerant: 21,600 Btu/h - Starting 2026
FOPS Standards FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer. - Starting 2026
Heater / Defroster 24600 Btu/h - Starting 2026
ROPS Standards (1) ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer. - Starting 2026

Capacity - He Body - 100% Fill Factor

Caterpillar 798 AC Off-Highway Truck Capacity - He Body - 100% Fill Factor specifications
Heaped (SAE 2:1) 218-276 m³ (285-361 yd³) - Starting 2026
Struck 129-200 m³ (168-261 yd³) - Starting 2026

Dimensions (Approximate)

Caterpillar 798 AC Off-Highway Truck Dimensions (Approximate) specifications
Centerline Front Tire Width 23.06 ft (7.03 m) - Starting 2026
Centerline of Rear Dual Tire Width 19.50 ft (5.94 m) - Starting 2026
Dump Clearance - Empty 5.72 ft (1.74 m) - Starting 2026
Front Axle Clearance - Loaded 2.81 ft (0.86 m) - Starting 2026
Front Canopy Height - Empty 26.01 ft (7.93 m) - Starting 2026
Height - Top of ROPS 22.10 ft (6.74 m) - Starting 2026
Inside Body Width 29.44 ft (8.97 m) - Starting 2026
Loading Height - Empty 25.54 ft (7.78 m) - Starting 2026
Outside Body/Canopy Width (without rock deflectors) 31.62 ft (9.64 m) - Starting 2026
Overall Canopy Width (with rock deflectors) 33.15 ft (10.10 m) - Starting 2026
Overall Height - Body Raised 48.85 ft (14.89 m) - Starting 2026
Overall Length 51.44 ft (15.68 m) - Starting 2026
Overall Length (High Altitude only) 51.87 ft (15.81 m) - Starting 2026
Overall Tire Width - Empty 30.27 ft (9.23 m) - Starting 2026
Rear Axle - Tail 16.07 ft (4.90 m) - Starting 2026
Rear Axle Clearance - Loaded 2.80 ft (0.85 m) - Starting 2026
Wheel Base 21.90 ft (6.68 m) - Starting 2026

Engine

Caterpillar 798 AC Off-Highway Truck Engine specifications
Bore 6.90 in (17.53 cm) - Starting 2026
Displacement 5,187.00 cu in (84,999.89 cu cm) - Starting 2026
Emissions Rating Fuel Optimized - Starting 2026
Engine Model Cat® C175-16 - Starting 2026
Gross Power - SAE J1995 3,500.00 hp (2,609.99 kw) - Starting 2026
Net Power - SAE J1349 3,405.00 hp (2,539.15 kw) - Starting 2026
Optional Gross Power - SAE J1995 3,100.00 hp (2,311.71 kw) - Starting 2026
Rated Speed 1800 r/min - Starting 2026
Stroke 8.70 in (22.10 cm) - Starting 2026

Engine - High Altitude Only

Caterpillar 798 AC Off-Highway Truck Engine - High Altitude Only specifications
Bore 6.90 in (17.53 cm) - Starting 2026
Displacement 6,469.00 cu in (106,008.15 cu cm) - Starting 2026
Emissions Rating Fuel Optimized - Starting 2026
Engine Model Cat® C175-20 - Starting 2026
Gross Power SAE J1995:2014 4,150.00 hp (3,094.71 kw) - Starting 2026
Net Power - SAE J1349:2011 4,000.00 hp (2,982.85 kw) - Starting 2026
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. - Starting 2026
Note 2 Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp - Starting 2026
Rated Speed 1750 r/min - Starting 2026
Stroke 8.70 in (22.10 cm) - Starting 2026

Service Refill Capacities

Caterpillar 798 AC Off-Highway Truck Service Refill Capacities specifications
Cooling System 211.00 gal (798.64 l) - Starting 2026
Crankcase 82.00 gal (310.37 l) - Starting 2026
Diesel Exhaust Fluid Tank 100.00 gal (378.50 l) - Starting 2026
Final Drive - Each 67.00 gal (253.60 l) - Starting 2026
Fuel Tank 1,300.00 gal (4,920.50 l) - Starting 2026
Fuel Tank (Tier 4) 1,200.00 gal (4,542.00 l) - Starting 2026
Grease Tank 90.00 lbs (40.82 kg) - Starting 2026
Hydraulic System - Including Tank 385.00 gal (1,457.23 l) - Starting 2026
Hydraulic Tank 296.00 gal (1,120.36 l) - Starting 2026

Service Refill Capacities - High Altitude Only

Caterpillar 798 AC Off-Highway Truck Service Refill Capacities - High Altitude Only specifications
Cooling System 273.00 gal (1,033.31 l) - Starting 2026
Crankcase 124.00 gal (469.34 l) - Starting 2026
Fuel Tank 2,000.00 gal (7,570.00 l) - Starting 2026
Hydraulic System (includes tank) 342.00 gal (1,294.47 l) - Starting 2026
Hydraulic Tank 273.00 gal (1,033.31 l) - Starting 2026

Sound

Caterpillar 798 AC Off-Highway Truck Sound specifications
Sound Standards The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008. - Starting 2026

Steering

Caterpillar 798 AC Off-Highway Truck Steering specifications
Steer Angle 39 degrees - Starting 2026
Steering Standards ISO 5010:2019 - Starting 2026
Turning Diameter - Front 106.30 ft (32.40 m) - Starting 2026

Suspension

Caterpillar 798 AC Off-Highway Truck Suspension specifications
Effective Cylinder Stroke - Front 10.00 in (25.40 cm) - Starting 2026
Effective Cylinder Stroke - Rear 5.00 in (12.70 cm) - Starting 2026
Type Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments - Starting 2026

Tires

Caterpillar 798 AC Off-Highway Truck Tires specifications
Rims 44" x 63" Rims - Starting 2026
Standard Tires 59/80 R63 - Starting 2026

Weight Distributions - Approximate

Caterpillar 798 AC Off-Highway Truck Weight Distributions - Approximate specifications
Front Axle - Empty 47 % - Starting 2026
Front Axle - Loaded 33 % - Starting 2026
Rear Axle - Empty 53 % - Starting 2026
Rear Axle - Loaded 67 % - Starting 2026

Weights - Approximate

Caterpillar 798 AC Off-Highway Truck Weights - Approximate specifications
Body Weight Range 38 833 - 43 275 kg (85,611 - 95,406 lb) - Starting 2026
Chassis Weight 453,826.00 lbs (205,852.27 kg) - Starting 2026
Nominal Rated Payload 410.00 t (410,000.00 kg) - Starting 2026
Rated Gross Machine Weight 1,375,000.00 lbs (623,690.28 kg) - Starting 2026
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