AD45 Underground Articulated Truck

AD45 Underground Articulated Truck

360 Exterior Spinset

The new AD45 underground articulated truck is powered by Cat C18® engine with scalable emission solutions. The truck delivers proven operating efficiency with improvements of serviceability. The AD45 is a ...
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Engine Model
Cat® C18
Emissions - EU Stage V Engine - Engine Power - ISO 14396:2002
Engine Gross Power - ISO 14396
Note (2)
All rating conditions are based on ISO/TR14396:2002, inlet air standard conditions with a total barometric pressure of 100 kPa (29.5 in Hg), with a vapor pressure of 1 kPa (0.295 in Hg), and 25° C (77° F). Performance measured using fuel to EPA specificat
Note (5)
Optional engine with emissions equivalent to Tier 3 and Stage IIIA is also available.
Note (4)
Optional Ventilation Reduction Package available.
Note (3)
Minimal engine derating* required up to 3048 m (10,000 ft) @ rated speed for Stage V engines, 2700 m (8,858 ft) for Tier 3/Stage IIIA equivalent engines and 3505 m (11,500 ft) for Tier 2/Stage II equivalent VR engines.
Note (1)
Power ratings apply at a rated speed of 2,000 rpm when tested under the reference conditions for the specified standard.
Emissions - EU Stage V Engine - Net Power - SAE J1349:2011
Emissions - Ventilation Reduction (VR) Engine - Net Power - SAE J1349:2011
Emissions - U.S. EPA Tier 3/EU Stage IIIA Equivalent Engine - Engine Power - ISO 14396:2002
Emissions - U.S. EPA Tier 3/EU Stage IIIA Equivalent Engine - Net Power - SAE J1349:2011
Emissions - Ventilation Reduction (VR) Engine - Engine Power - ISO 14396:2002
Note (6)
Optional engine available that meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Note (7)
*<5 %

Operating Specifications

Nominal Payload Capacity
Gross Machine Mass
Body Capacities
18.0-25.1 m³ (23.5-32.8 yd³)
Shipping Mass (Stage V Engine Model)
Shipping Mass (Other Engine Models)

Turning Dimensions

Articulation Angle
Frame Oscillation
Outside Clearance Radius*
Inside Clearance Radius*
*Clearance dimensions are for reference only.


Forward - 1
Forward - 2
Forward - 3
Forward - 4
Forward - 5
Forward - 6
Forward - 7
Reverse - 1
Reverse - 2
Maximum travel speeds with standard 29.5 × R29 tires.

Service Refill Capacities

Engine Crankcase - With Filter
16.9gal (US)
15.9gal (US)
Hydraulic Tank
70.3gal (US)
Cooling System
22.5gal (US)
Front Differential and Final Drives
20.3gal (US)
Rear Differential and Final Drives
21.9gal (US)
Fuel Tank
201.8gal (US)

Body Capacities

Ejector Body
Heaped SAE 2:1.
Dump Body - 2 - Standard
Dump Body - 1
Dump Body - 3


Tire Size
29.5 × R29


ROPS/FOPS Certified Cab

Final Drives

Differential Ratio
Final Drive Ratio
Total Reduction Ratio

Weights (Stage V Engine Model)

Operating Mass + Rated Payload
Operating Mass - Rear Axle
Operating Mass
Operating Mass + Rated Payload - Rear Axle
Operating Mass - Front Axle
Operating Mass + Rated Payload - Front Axle

Weights (Other Engine Models)

Operating Mass - Rear Axle
Operating Mass + Rated Payload - Front Axle
Operating Mass - Front Axle
Operating Mass + Rated Payload
Operating Mass
Operating Mass + Rated Payload - Rear Axle

Weight Distribution (Stage V Engine Model)

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

Weight Distribution (Other Engine Models)

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

Body Hoist (Stage V Engine Model)

21 Seconds
Total Cycle Time
36 Seconds
15 Seconds

Body Hoist (Other Engine Models)

Total Cycle Time
35 Seconds
14 Seconds
21 Seconds

Power Train – Engine – Emission reduction options to meet your mine’s requirement.

The Cat® C18 engine provides efficient fuel management for quick response, high productivity and exceptional service life. Torque rise effectively matches transmission shift points for maximum efficiency and fast cycle times. Mechanically Actuated, Electronic Unit Injection (MEUI™) high-pressure, direct injection fuel system electronically monitors operator demands and sensor inputs to optimize engine performance. Air-to-air aftercooling provides improved fuel economy by packing cooler, denser air into cylinders for more complete combustion of fuel and lower emissions. Turbo is water cooled to improve performance and service life.

The engine with Stage V emission package is recommended for mines that require compliance with highest emission standards in underground applications or customers that require to drive down diesel particulate matter and NOx emission to near-zero while improving overall air quality and maintaining a high machine performance. After-treatment components are carefully guarded and heat wrapped. The system uses regeneration to manage emissions inside the Clean Emissions Module (CEM). This solution requires the use of 15 PPM ultra-low sulfur diesel and CJ-4 low ash engine oil.

The engine with optional Ventilation Reduction Package is also available. The VR Package focuses on diesel particulate matter and it incorporates selective engine hardware and software to minimize diesel particulate matter in the engine exhaust. A Cat Diesel Particulate Filter (wall flow filter or flow through filter) can be used with the VR engine package. The filters compliment the VR engine by further reducing particulate matter in the exhaust. This solution requires the use of 15 PPM ultra-low sulfur diesel and CJ-4 low ash engine oil.

Optional Tier 3 equivalent and Stage IIIA equivalent engine is also available.

Power Train – Transmission – More power to the ground for greater productivity.

Mechanical Power Train

The Cat mechanical drive power train and power shift transmission provide unmatched operating efficiency and control on steep grades, in poor underfoot conditions, and on haul roads and drives with high rolling resistance.


The Cat seven-speed planetary power shift transmission is matched with the direct-injection C18 engine to deliver constant power over a wide range of operating speeds.

Robust Design

Designed for rugged underground mining conditions, the proven planetary power shift transmission is built for long life between overhauls.

Lock Up Torque Converter

Combines maximum rimpull and cushioned shifting of torque converter drive with the efficiency and performance of direct drive. When engaged, lock-up provides superior power train efficiency by delivering more power to the wheels.

Lock-Up Clutch

Quickly releases and re-engages to reduce power train torque loads for smoother shifting, long life and a more comfortable ride.

Smooth Shifting

Individual clutch modulation provides smooth clutch engagements to optimize performance and extend clutch life.

Final Drives

Cat final drives work as a system with the planetary power shift transmission to deliver maximum power to the ground. Built to withstand the forces of high torque and impact loads, final drives provide high torque multiplication to further reduce drive train stress.

Full Floating Axles

Full floating axles relieve internal stresses and increase durability. Rolled splines also provide increased service life.

Engine/Power Train Integration – Intelligent electronics for overall optimal performance.

Cat Data Link

Electronically integrates machine computer systems to optimize overall power train performance, increase reliability and component life, and reduce operating costs.

  • Controlled Throttle Shifting – Regulates engine RPM, torque converter lock-up and transmission clutch engagement for smoother shifts and longer component life.
  • Economy Shift Mode – Decreases fuel consumption, lowers noise levels and potentially longer engine life.
  • Directional Shift Management – Regulates engine speed to prevent damage caused by high speed directional changes.
  • Body-up Shift Inhibitor – Prevents the transmission from shifting above a pre-programmed gear without the body fully lowered.
Electronic Technician (Cat ET)

Cat ET service tool provides service technicians with easy access to stored diagnostic data through Cat Data Link to simplify problem diagnosis and increase availability.

Overspeed Protection

The Automatic Retarder Control (ARC) system provides engine overspeed protection. The ARC will engage the brakes if the following conditions exist at the same time:

  • An unsafe engine speed is reached.
  • The ARC on/off switch is in the ON position or the OFF position.
  • The throttle is being depressed by the operator.

If the transmission is in top gear, the lockup clutch is deactivated in order to protect the engine against an engine overspeed condition.

Cat® Brake System – Superior control for operator confidence.

Integrated Braking System

The Cat oil-cooled braking system delivers reliable performance and control in the most extreme underground mining conditions. The integrated system combines the service, secondary, parking brake and retarding functions in the same robust system for optimum braking efficiency.

Oil-Cooled Multiple Disc Brakes

Four-wheel, forced oil-cooled, multiple disc service brakes are continuously cooled by a water-to-oil heat exchangers for non-fade braking and retarding performance. They are also completely enclosed to prevent contamination and reduce maintenance.

Automatic Retarder Control (ARC)

Electronically controls retarding on grade to maintain optimum engine RPM and oil cooling. Additional braking may be applied using the manual retarder or the brake pedal. ARC also allows the operator to maintain optimum engine speeds for faster downhill hauls and greater productivity. The ARC automatically activates when engine speed exceeds factory preset levels.

Superior Control

Automatic brake modulation offers a smoother ride and greater control, allowing the operator to concentrate on driving.

Operator Comfort – Ergonomically designed for all-day comfort, control and productivity.

The AD45 operator station is ergonomically designed for total machine control in a comfortable, productive and safe environment. All controls, levers, switches and gauges are positioned to maximize productivity and minimize operator fatigue.

Protective Structure

Integral to the cab and frame, both the Rollover Protective Structure (ROPS) and Falling Objects Protective Structure (FOPS) are resiliently mounted to the mainframe to isolate the operator from vibration for a more comfortable ride.

Optional Enclosed Cab

Optional sound-suppressed ROPS cab provides a quiet, secure and comfortable air-conditioned working environment with fresh, pressurized, temperature-controlled air circulation.

Suspension Seat

Ergonomic, fully adjustable suspension seat provides optimal operator comfort. Thick cushions reduce pressure on lower back and thighs. Wide, retractable seat belts provide a secure, comfortable restraint.

Steering Column

Comfort wheel with tilt steering provides a comfortable driving position, secure grip and greater control.

Monitoring System

Cat Electronic Monitoring System (Cat EMS) continuously provides critical machine data to keep the machine performing at top production levels. Displays are backlit for easy viewing. The Stage V model offers additional emission display allows emission status monitoring.


Additional camera mounted on the right hand side enhances operator visibility for the EU Stage V model and along with the reverse and cab loading cameras (optional for other machines) further assists operators to navigate the truck safely.

Truck Body Systems – Rugged performance and reliability in tough underground mining applications.

Cat Truck Bodies

Caterpillar offers two specific body styles for the most efficient hauling solutions at the lowest cost-per-ton.

  • Dump Body
  • Ejector Body

The ejector body can now be easily removed and a dump body fitted for greater machine versatility.

Body Selection

Selection of the right body depends on material, haul road, and dump conditions. The better the match of body to application, the greater the efficiency. Your Cat dealer can help you select the right body system for your site specific application.

Body Design

Cat truck bodies are designed for optimal strength, capacity and durability. Drawing on years of experience in truck body design, Cat Truck Bodies are designed for long service life and low cost per ton.

Body/Chassis Integration

Cat truck bodies are designed and matched with the integrated chassis system for optimum structural reliability, durability and long life.

Fast Hoist Cycle Times

Single-stage hoist cylinders provide fast dump cycle times of 16 seconds for raise and 21 seconds for lower.

Truck Payload Management System (TPMS)

The optional TPMS system calculates the payload the truck is carrying and determines truck cycle times. It now offers payload scoreboards on both sides of the truck providing the LHD operator with visual real time payload data.

Structures – Rugged Cat structures – the backbone of the AD45’s durability.

Frame Design

The frame uses box-section design with stiff frame beams to resist twisting forces. Materials and weld joints are matched to optimize the structural life of the frame.

Articulating/Oscillating Hitch

This system provides steering and oscillation and enables the truck to maintain all wheel ground contact in rough terrain.

Suspension System

Two independent variable rebound suspension cylinders dissipate haul road forces for longer frame life and a comfortable ride.

Serviceability – More time for production.

Service Access

Easy access to daily service points simplifies servicing and reduces time spent on regular maintenance procedures.

Ground-Level Access

Allows convenient servicing to all tanks, filters, lubrication points and compartment drains.

Electric fuel priming. Remote mounted fuel filters for easier serviceability.

Air Filters

Radial seal air filters are easy to change, reducing time required for air filter maintenance.

Sight Gauges

Fluid level checks are made easier with sight gauges.


Cat Electronic Technician (Cat ET) service tool enables quick electronic diagnosis of machine performance and key diagnostic data for effective maintenance and repairs.

Sealed Electrical Connectors

Electrical connectors are sealed to lock out dust and moisture. Harnesses are covered for protection. Wires are color and number coded for easy diagnosis and repair.

Scheduled Oil Sampling

S·O·SSM helps avoid minor repairs becoming major ones. Sample point adapters fitted standard to machine.

Customer Support – Cat dealer services keep underground mining equipment productive.

Dealer Capability

Cat dealers will provide the level of support you need, on a global scale. Dealer expert technicians have the knowledge, experience, training and tooling to handle your repair and maintenance needs, when and where you need them.

Product Support

When Cat products reach the field, they are supported 24/7 by a worldwide network of reliable and prompt parts distribution facilities, dealer service centers, and technical training facilities to keep your equipment up and running.

Service Support

Cat equipment is designed and built to provide maximum productivity and operating economy throughout its working life. Cat dealers will be with you every step of the way with its unsurpassed worldwide parts support, trained technicians and customer support agreements.

Technology Products

Cat dealers offer a range of advanced technology products designed to improve efficiency, productivity and lower costs. New Product Link™ Elite (PLE) system standard on all models provides machine health monitoring.


Repair or rebuild? Your Cat dealer can help you evaluate the costs so you can make the right choice.

Safety – Designed with safety as the first priority.

Product Safety

Caterpillar has been and continues to be proactive in developing mining machines that meet or exceed safety standards. Safety is an integral part of all machine and systems designs.

Engine Shutoff Switch

A secondary engine shutoff switch is located at ground level.

Integral ROPS Cab

Integral to the cab and frame, the ROPS is resiliently mounted to the frame to isolate the operator from vibration for a more comfortable ride.

Brake Systems

Four corner oil-cooled braking system provides excellent control. The service brakes and retarding system are actuated by modulated hydraulic pressure, while the parking brake function is spring applied and hydraulic released. This system assures braking in the event of loss of hydraulic pressure.

Operator Present System

Automatically engages parking brake, neutralizes steering, implement and transmission control, and shuts down the engine in the event the operator fails to apply the park brake prior to exiting the cab.

Standard Safety Features

Anti-skid upper deck surfaces, upper deck handrails, 3-point cabin and machine access, push out safety glass, excellent visibility, suspension seat, passenger/training seat, inertia reel retractable belts, steering frame lock, rear window guard, body retaining pins, automatic retarder control, exhaust heat shielding and firewall fitted standard, hitch hydraulic hoses – burst protection sleeves fitted, tailgate retaining pins (ejector body), alternate exit via windows, ground level compartment sight glasses, hot and cold side of engine.


For more complete information on safety, please visit

Manufacturing – A Focus on Quality and Safety

The AD45 is designed in Burnie Tasmania (Australia) and manufactured in Rayong Thailand.

Burnie is also home of the Caterpillar Burnie Proving Grounds where a complete Command for Underground test facility and training center is available to customers. A video of this facility is available at

The Caterpillar factory in Rayong is one of the newest manufacturing facilities at Caterpillar, with 100 percent focus given to underground hard rock mining products.

The Rayong facility was designed and built by Caterpillar, and is managed and operated by a highly skilled and uniquely diverse team who have embedded the Cat Production System into their culture.

Upon joining the team in Rayong, an employee will undergo 250 hours of training before performing their task on the line. Significantly more education is given to our welders. To ensure they succeed in their tasks, we provide our welders with the latest tooling so that our team can work ergonomically and achieve the weld penetration specified. The quality of your Cat machine starts with this team.

Each step of the manufacturing process has quality control gates, and every single employee is empowered to stop the assembly line to continuously improve safety or the manufacturing process.

A clean environment helps keep components free of contaminants and provides a better work climate. Like all Caterpillar facilities around the world, visitors are most welcome to see where and how their machines are made.

Standard Equipment:

Optional Equipment:

    Optional Equipment
    • Battery shutdown
      – Ground level isolation, in cab isolation switch
      – Ground level isolation, engine shutdown switch
      – Ground level isolation, in cab isolation, engine shutdown switch
    • Body dump
      – Body (18.0 m³, 23.5 yd³)
      – Body (25.1 m³, 32.8 yd³)
    • Body ejector
      – Ejector (22.9 m³, 30.0 yd³)
    • Body liners, impact and/or wear
      – 10 mm (0.4"), body, dump (18.0 m³, 23.5 yd³)
      – 10 mm (0.4"), body, dump (21.3 m³, 27.9 yd³)
      – 10 mm (0.4"), body, dump (25.1 m³, 32.8 yd³)
      – 10 mm (0.4"), body, ejector (22.9 m³, 30.0 yd³)
    • Body wear plate, external
      – 16 mm (0.62"), body, dump (18.0 m³, 23.5 yd³)
      – 16 mm (0.62"), body, dump (21.3 m³, 27.9 yd³)
      – 16 mm (0.62"), body, dump (25.1 m³, 32.8 yd³)
    • Camera
      – Color rear facing
      – Color loading
    • Cover, anti vandalism for shipping
    • Engine options
      – Engine, Stage V
      – Engine, Ventilation Reduction (VR)
      – Equivalent to Tier 3
      – After-treatment options (for use with VR Engine only)
    • DPF (Flow Through) Filter
    • Fast fill system
      – Coolant
      – Engine oil
      – Fuel (dual tanks)
      – Hydraulic oil
      – Transmission oil
    • Fire suppression system
      – Ansul, wet
    • Fluids
      – Arctic fuel
      – Arctic coolant
    • Handrail Extension
    • Lubrication system
      – Automatic, dump or ejector body
      – Centralized, ejector body
    • Mine transfer
      – Mine transfer ready front frame (tack welded)
      – Mine transfer ready dump body (tack welded)
      – Mine transfer ready ejector body (tack welded)
    • Operators station ROPS/FOPS enclosed
      – Air conditioning
      – Cab pressurizer and filter
      – Dome light
      – Heater
      – Radio ready compartment for radio and speakers
      – Sun visor
      – Window, sliding cab door
    • Park brake switch engagement
      – Push to apply
      – Pull to apply
    • Payload
      – Truck Payload Measurement System (TPMS)
      – Remote display for TPMS
    • Reflective tape
    • Rims
      – Rim identification numbering
      – Spare, tubeless
    • Seat
      – Suspension seat Cat Comfort TLV2, vinyl
      – Suspension seat tee, mechanical
    • Seat cover
      – Tee and Cat Comfort TLV2
      – Seat cover, companion
    • Secondary steering system
    • Service tools
      – Collet jacking bolts, dump or ejector
      – Diagnostics box
      – Hoist cylinder supports (for body removal)
      – Brake wear gauge
      – Reference parts manual for additional tooling available
    • Switches
      – Engine shutdown, fire suppression activation
      – Idle timer
      – Engine shutdown, fire suppression activation/idle timer
    • Technology
      – Product Link Elite (PLE) system
    • Tire arrangements
      – Tire, 29.5 × R29 VSNT Bridgestone
      – Tire, 29.5 × R29 VSDL Bridgestone
    • Torque converter, high altitude, 3000 m (9,842 ft) and up
    • NOTE: Not all features are available in all regions. See your Cat dealer for more information.