Power Train - Engine

The Cat 3456E diesel engine delivers the power and reliability necessary to perform in the most demanding underground mining applications.

Power Train - Transmission

Cat power train delivers more power to the ground for greater productivity and lower operating costs.

Engine/Power Train Integration

Electronically combines critical power train components to work more intelligently and to optimize overall truck perforamnce.

Caterpillar Brake System

Reliable braking with superior control gives the operator the confidence to focus on productivity.

Operator's Station

Ergonomically designed for operator comfort, superior control and high productivity.

Truck Body Systems

Cat designed and built for rugged performance and reliability in tough underground mining applications.


Rugged Cat structures are the backbone of the AD55 underground mining truck's durability.


Less time spent on maintenance means more time on the haul roads.

Customer Support

Caterpillar dealers have what it takes to keep underground mining haul trucks on the haul roads.


Engineered for performance, designed for comfort, built to last.


Engine Model Cat® C18 ATAAC Cat® C18 ATAAC Less
Rated Power 2000.0 RPM 2000.0 RPM Less
Gross Power - SAE J1995 650.0 hp 485.0 kW Less
Flywheel Power 617.0 hp 460.0 kW Less
Net Power - SAE J1349 617.0 hp 460.0 kW Less
Net Power - ISO 9249 617.0 hp 460.0 kW Less
Net Power - 80/1269/EEC 617.0 hp 460.0 kW Less
Bore 5.7 in 145.0 mm Less
Stroke 7.2 in 183.0 mm Less
Displacement 1106.44 in3 18.1 L Less

Operating Specifications

Gross Machine Operating Weight 224871.0 lb 102000.0 kg Less
Nominal Payload Capacity 121254.0 lb 55000.0 kg Less


Empty 103617.0 lb 47000.0 kg Less
Front Axle 68493.0 lb 31068.0 kg Less
Rear Axle 35124.0 lb 15932.0 kg Less
Loaded 224871.0 lb 102000.0 kg Less
Front Axle 105956.0 lb 48061.0 kg Less
Rear Axle 118915.0 lb 53939.0 kg Less

Weight Distribution

Empty . . Less
Front Axle 66.0 % 66.0 % Less
Rear Axle 34.0 % 34.0 % Less
Loaded . . Less
Front Axle 48.0 % 48.0 % Less
Rear Axle 52.0 % 52.0 % Less


Forward 1 4.4 mph 7.0 km/h Less
Forward 2 5.9 mph 9.6 km/h Less
Forward 3 8.1 mph 13.0 km/h Less
Forward 4 10.8 mph 17.5 km/h Less
Forward 5 14.7 mph 23.7 km/h Less
Forward 6 19.8 mph 31.9 km/h Less
Forward 7 26.9 mph 43.3 km/h Less
Reverse 1 4.2 mph 6.8 km/h Less
Reverse 2 5.7 mph 9.2 km/h Less

Body Hoist

Raise 12.0 Seconds 12.0 Seconds Less
Lower 24.0 Seconds 24.0 Seconds Less
Total Cycle Time 36.0 Seconds 36.0 Seconds Less

Body Capacities

Body 1 35.2 yd3 26.9 m3 Less
Body 2 44.2 yd3 33.8 m3 Less
Body 3 47.9 yd3 36.6 m3 Less

Turning Dimensions

Outside Clearance Radius 389.2 in 9885.0 mm Less
Axle Oscillation 10.0 Degrees 10.0 Degrees Less
Articulation Angle 42.5 Degrees 42.5 Degrees Less


Overall Width 131.7 in 3346.0 mm Less
Tunnel Clearance Width 196.9 in 5000.0 mm Less
Tunnel Clearance Height 196.9 in 5000.0 mm Less
Height to Top of Load (2:1) 151.5 in 3848.0 mm Less
Loading Height 120.8 in 3067.0 mm Less
Overall Height - Body Raised 274.4 in 6969.0 mm Less
Height to Top of ROPS 118.1 in 3000.0 mm Less
Overall Length 454.6 in 11547.0 mm Less
Wheelbase 232.2 in 5900.0 mm Less
Ground Clearance 15.4 in 391.0 mm Less


Tire Size 35 X 65 R33 35 X 65 R33 Less


Brakes ISO3450, AS2958.1, CAN-CSA424.30-M90 ISO3450, AS2958.1, CAN-CSA424.30-M90 Less
Cab/FOPS ISO3449, SAEJ231, AS2294.3, EN13627 ISO3449, SAEJ231, AS2294.3, EN13627 Less
Cab/ROPS ISO3471, SAEJ1040, AS2294.2, EN13510 ISO3471, SAEJ1040, AS2294.2, EN13510 Less
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