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The Cat® D Series incorporates innovations for improved performance and versatility.
The Cat® D Series incorporates innovations for improved performance and versatility. Increased lifting capacity, improved cycle times and ease of operation lead to increased productivity and lower operating costs.
Built for power, reliability, low maintenance, excellent fuel economy and low emissions.Learn More
The Cat® C6.6 engine with ACERT™ Technology introduces a series of evolutionary, incremental improvements that provide breakthrough engine performance. The building blocks of ACERT Technology are fuel delivery, air management and electronic control. ACERT Technology optimizes engine performance while meeting EPA Tier 3 engine emission regulations. The Cat C6.6 engine in the M322D delivers a maximum gross power of 129 kW (173 hp) at a rated speed of 2,000 rpm.
Low Fuel Consumption
The C6.6 is electronically controlled and uses Cat Common Rail Fuel System and fuel pump. This combination provides outstanding fuel consumption during both production and travel. When the system recognizes roading application the engine will operate at the most efficient system operating point to save fuel without compromising road performance.
Low Noise, Low Vibration
The Cat C6.6 design improves operator comfort by reducing sound and vibration.
An electronically controlled, hydraulic motor drives a variable speed on-demand fan for engine coolant and hydraulic oil. The optimum fan speed is determined based on coolant and hydraulic oil temperature resulting in reduced fuel consumption and lower sound levels. The electronic engine control continuously compensates for the varying fan load, providing consistent net power, regardless of operating conditions.
One-Touch Low Idle Control
The two stage, one-touch Automatic Engine Speed Control reduces engine speed if no operation is performed, maximizing fuel efficiency and reducing sound levels.
Waste Handling Package
The Waste Handling Package has been specifically developed for Cat Wheel Excavators working in waste transfer stations or other extremely dusty applications. This option features the following:
Load-sensing hydraulic system provides fast cycle times, increased lift capacity and high bucket and stick forces to maximize your productivity in any job.Learn More
Dedicated Swing Pump
A dedicated variable displacement piston pump and fixed displacement piston motor power the swing drive. This closed hydraulic circuit maximizes swing performance without reducing power to the other hydraulic functions, resulting in smoother combined movements.
Heavy Lift Mode
This mode maximizes lifting performance by boosting the lifting capability of the excavator by 7%.
Adjustable Hydraulic Sensitivity
This function allows the operator to adjust the aggressiveness of the machine according to the application. For precision work, one of four different levels of aggressiveness can be preselected.
Proportional Auxiliary Hydraulics
Versatility of the hydraulic system can be expanded to utilize a wide variety of hydraulic work tools using multiple valve options.
Stick Regeneration Circuit
The stick regeneration circuit increases efficiency and helps increase controllability for higher productivity and lower operating costs.
The machine can be optionally equipped with a dedicated hydraulic circuit to operate hydraulic quick couplers.
Caterpillar integrates its cylinder snubber technology into all Wheel Excavator boom and stick cylinders. These snubbers help cushion shocks, reduce sound and increase cylinder life.
Reduces stress and vibrations transmitted to the machine and provides a more comfortable environment.Learn More
Scraping rock and finishing work is easy and fast. SmartBoom™ simplifies the task and allows the operator to concentrate on stick and bucket, while boom freely goes up and down without using pump flow.
The front parts automatically follow the hammer while penetrating the rock. Blank shots or excessive force on the hammer are avoided resulting in longer life for the hammer and the machine. Similar advantages with vibratory plate compactors.
Loading trucks from a bench is more productive and fuel efficient as the return cycle is reduced while the boom down function does not require pump flow.
The M322D helps build a better world and preserve the fragile environment.Learn More
The D Series Wheel Excavators are designed for outstanding performance with high fuel efficiency. This means more work done in a day, less fuel consumed and minimal impact on our environment.
Low Exhaust Emissions
The new Cat® C6.6 engine meets the EPA Tier 3 emissions regulations while offering increased performance, reliability and reduced fuel consumption and sound levels.
Operator and spectator noise levels are extremely low as a result of the new variable speed fan and remote cooling system.
Biodegradable Hydraulic Oil
The optional biodegradable hydraulic oil (Cat BIO HYDO Advanced HEES™) is formulated to provide excellent high‑pressure and high temperature characteristics, and is fully compatible with all hydraulic components. Cat BIO HYDO Advanced HEES™ is fully decomposed by soil or water microorganisms, providing a more environmentally sound alternative to mineral-based oils.
Fewer Leaks and Spills
Lubricant fillers and drains are designed to minimize spills. Cat O-Ring Face Seals, Cat XT™ Hose and hydraulic cylinders are all designed to help prevent fluid leaks that can reduce the machine performance and cause harm to the environment.
Longer Service Intervals
Working closely with your Cat dealer can help extend service intervals for engine oil, hydraulic oil, axle oil and coolant. Meaning fewer required fluids and fewer disposal, all adding up to lower operating costs.
The interior layout maximizes operator space, provides exceptional comfort and reduces operator fatigue.Learn More
Interior Operator Station
Improved visibility and ergonomics are some of the many new features of the D Series Wheel Excavators. The operator station provides maximum space and is designed for simplicity and functionality. Frequently used switches are centralized and are situated on the right-hand switch console. The left-hand seat console controls dozer blade and/or outriggers, and is tiltable for easy access to the cab. The fully automatic climate control adjusts temperature and air flow for exceptional operator comfort. Other comfort features include a cigar lighter, ashtray, cup/can holder, magazine rack and integrated mobile phone holder.
The exterior design uses thick steel tubing along the bottom perimeter of the cab, improving the resistance to fatigue and vibration. This design allows the falling object guards to be bolted directly to the cab. The cab shell is attached to the frame with rubber mounts that limit vibration and sound transmitted from the frame, substantially reducing interior noise levels.
To maximize visibility, all glass is affixed directly to the cab, eliminating the use of window frames. Choice of fixed or easy-to-open split front windshield meet operator preference and application conditions.
Another new feature is electrically heated mirrors, increasing safety and visibility in cold conditions.
The parallel wiper system maximizes visibility in poor weather conditions. The wiper virtually covers the entire front windshield, cleaning the operator’s immediate line of sight.
The new compact color monitor displays information in local language that is easy to read and understand. Functions include:
The optional deluxe seat, equipped with an active seat climate system, improves operator comfort. Cooled air flows through the seat cushions to reduce body perspiration. On cold days, a two-step seat heater keeps the operator warm and comfortable. The fully adjustable seat with adjustable lumbar support automatically adjusts to the driver’s weight providing a more relaxed and comfortable environment.
A large storage compartment is located behind the operator’s seat. The compartment provides sufficient room to store items such as a lunch box. A cover secures the contents during machine operation.
Two-way pedals for travel and auxiliary circuits provide increased floor space, reducing the need to change positions. The foot pedal for auxiliary high-pressure circuit can be locked in the off position and used as a footrest for greater operator comfort.
Cat Standard Rearview Camera
The rearview camera displays on the operator monitor. Together with the best in class visibility to the front, up, left and right, the rearview camera ensures the safe operation of the machine and fulfills the requirements of ISO 5006/EN474.
Undercarriage and axle design provides maximum strength, flexibility and mobility on wheels.Learn More
Heavy-Duty Axles and Stabilizers
The D Series Wheel Excavator undercarriage provides rigidity and long life. Effective hydraulic line routing, transmission protection and heavy-duty axles make the undercarriage perfect for wheel excavator applications. The front axle offers wide oscillating and steering angles. The transmission is mounted directly on the rear axle for protection and optimum ground clearance.
Advanced Disc Brake System
The disc brake system acts directly on the hub instead of the drive shaft to avoid planetary gear backlash. This solution minimizes the rocking effect associated with working free on wheels. The axle design lowers maintenance and lifetime costs. Oil change intervals are at 2,000 working hours, further reducing owning and operating costs.
The optional fenders provide excellent coverage of the front and rear tires, protecting the machine from mud and dirt. Water cannot splash up on the windscreen or cooler. The fenders further protect the machine from stones and debris being thrown up by the tires, providing additional safety for the machine, other vehicles and personnel working close to the excavator.
Designed for maximum flexibility to keep production high on all jobs.Learn More
Booms and sticks are welded, box section structures with thick, multiplate fabrications in high stress areas, for rugged performance and long service life.
The choice of two booms and three sticks provides the right balance of reach and digging forces for all applications.
Variable Adjustable (VA) Boom
The VA boom offers improved right side visibility and machine roading balance. When working in tight quarters or lifting heavy loads, the VA boom offers the best performance.
The one-piece boom fits best for all standard applications such as truck loading and digging. A unique straight section in the curve of the side plate reduces stress flow and helps increase boom life.
Three different stick lengths are offered to match different application requirements:
A wide variety of Work Tools help optimize machine performance. Purpose designed and built to Caterpillar’s high durability standards.Learn More
Cat work tools are designed to function as an integral part of your excavator and to provide the best possible performance in your particular application. All work tools are performance-matched to Cat machines.
Quick Couplers enable the operator to simply release one work tool and connect to another, making your hydraulic excavator highly versatile. Productivity also increases, as a carrier no longer needs to be idle between jobs. Caterpillar offers hydraulic and spindle quick coupler versions.
Caterpillar offers a wide range of specialized buckets, each designed and tested to function as an integral part of your excavator. Buckets feature the new Cat K Series™ Ground Engaging Tools.
Cat® hammer series deliver very high blow rates, increasing the productivity of your tool carriers in demolition and construction applications. Wide oil flow acceptance ranges make the Cat hammers suitable for a wide range of carriers and provide a system solution from one safe source.
Orange Peel Grapples
The Orange Peel Grapple is constructed of high-strength, wear-resistant steel, with a low and compact design that makes it ideal for dump clearance. There are several choices of tine and shell versions.
Thanks to its single basic housing design, the Multi-Processor series of hydraulic demolition equipment makes it possible to use a range of jaw sets that can handle any demolition job. The Multi-Processor is the most versatile demolition tool on the market.
Vibratory Plate Compactors
Cat compactors are performance-matched to Cat machines, and integrate perfectly with the Cat hammer line - brackets and hydraulic kits are fully interchangeable between hammers and compactors.
Cat shears provide superior and effective scrap processing, and are highly productive in demolition environments. Shears are compatible with a matching Cat excavator, and bolt-on brackets are available for either stick or boom-mounted options.
Simplified and easy maintenance save you time and money. Cat® dealer services help you operate longer with lower costs.Learn More
Ground Level Maintenance
Caterpillar designed its D Series Wheel Excavators with the operator and service technician in mind. Gull-wing doors, with pneumatically-assisted lift cylinders, effortlessly lift up to allow critical maintenance to be performed quickly and efficiently while maintaining operator safety.
Extended Service Intervals
The D Series Wheel Excavator service and maintenance intervals have been extended to reduce machine service time, increase machine availability and reduce operating costs. Using S·O·SSM Scheduled Oil Sampling analysis, hydraulic oil change intervals can be extended up to 6,000 hours.
Cat engine oil is formulated to optimize engine life and performance. The specially formulated oil is more cost effective and increases engine oil change interval to 500 hours, providing industry leading performance and savings.
Cat air filters eliminate the use of service tools, reducing maintenance time. The air filter features a double-element construction with wall flow filtration in the main element and built-in mini-cyclone precleaners for superior cleaning efficiency. The air filters are constantly monitored for optimum performance. If airflow becomes restricted, a warning is displayed by the way of the in-cab monitor.
The hydraulic return filter, a capsule filter, prevents contaminants from entering the system when the hydraulic oil is changed.
Cat high efficiency fuel filters with a Stay-Clean Valve™ features a special media that removes more than 98% of particles, increasing fuel injector life. Both the primary and secondary fuel filters are located in the engine compartment and can be easily changed from ground level.
The D Series is equipped with a primary fuel filter with water separator located in the engine compartment. For ease of service, the water separator can be easily accessed from ground level.
Fuel Tank Drain
The durable, corrosion-free tank has a remote drain located at the bottom of the upper frame to remove water and sediment. The tank drain with hose connection allows simple, spill-free fluid draining.
The front compartment hood can be opened vertically, providing outstanding ground level access to the batteries, air-to-air aftercooler, air conditioner condenser and the engine air filter.
Swing-out Air Conditioner Condenser
The air conditioning condenser swings out horizontally to allow complete cleaning on both sides as well as excellent access to the air-to-air aftercooler.
Scheduled Oil Sampling
Caterpillar has specially developed S·O·SSM Oil Sampling Analysis to help ensure better performance, longer life and increased customer satisfaction. This thorough and reliable early warning system detects traces of metals, dirt and other contaminants in your engine, axle and hydraulic oil. It can predict potential trouble avoiding costly failures. Your Cat dealer can give you results and specific recommendations shortly after receiving your sample.
The engine can be accessed from both ground level and the upper structure. The longitudinal layout ensures that all daily inspection items can be accessed from ground level.
They cover the top of the steps and upper structure to help prevent slipping during maintenance. The Anti-Skid plates reduce the accumulation of mud on the upper structure, improving the cleanliness and safety.
Easy to Clean Coolers
Flat fins on all coolers reduce clogging, making it easier to remove debris. The main cooling fan and air conditioner condenser are both hinged for easier cleaning.
Remote Greasing Blocks
For those hard to reach locations, greasing blocks have been provided to reduce maintenance time.
Handrails and Steps
Large handrails and steps assist the operator in climbing on and off the machine.
LED Rear Lights
Standard Light Emitting Diode (LED) rear lights provide increased visibility on the job site, higher durability and longer life.
A wide variety of optional factory-installed attachments are available to enhance performance and improve job site management.Learn More
The integrated Tool Control system allows the operator to select up to 10 preset combinations. This eliminates the need to reset the hydraulic parameters each time a tool is changed. Individual flow and pressure can be programmed easily as well as one-way/two-way hydraulic functions. Each of the ten-programmed tools can even be given a specific name. The unique Cat proportional sliding switches and optional auxiliary pedal provide modulation to the tool to make precision work easy.
The unique joystick steering option enables an operator to reposition the machine while traveling in first gear by the use of the slider switch on the right joystick. This enables the operator to keep both hands on the joysticks while simultaneously moving the implements and traveling. The operator can do more precise work faster with increased safety around the machine.
Working and Travel Modes
There are 2 selectable working modes and one automatic travel setting. The operator can choose the best power setting for both engine and hydraulic power versus fuel efficiency.
Product Link allows remote monitoring of the machine, using a powerful telemetric system to transmit needed information to the customer and the dealer via a secure, web-based application, VisionLink™. Critical information, such as event and diagnostic codes, is readily accessible, as are machine statistics, such as hour-meter reading, fuel consumption and idle time. Mapping functions include location and geo-fencing, which assist in servicing operations and in preventing unauthorized machine use. With Product Link, the customer and the dealer have an invaluable tool for more efficiently managing machines and fleets.
The ride control system improves operator comfort and allows the machine to travel faster over rough terrain with improved ride quality for the operator. The ride control system features accumulators acting as shock absorbers to dampen the front part motion. Ride control can be activated through a button located on the soft switch panel in the cab.
Designed for cleaning ditches, sloping, grading and other finish work.Learn More
Hammers for Skid Steer Loaders and Mini Hydraulic ExcavatorsLearn More
Stiff Link Thumbs feature a rigid link and are attached to the excavator stick with a weld-on bracket. The bucket curls in to the thumb to pick, grab, sort and handle various types of material and objects found on most every job site.Learn More
Used for compacting soil, driving sheeting or posts.Learn More
Non-rotating hydraulic pulverizer reduces concrete and separates rebar.Learn More
Used for demolishing steel structures and preparing bulk scrap (such as cars, farm machinery and railroad cars) for further processing.Learn More
Basket-style demolition grapple featuring 360° hydraulic rotation.Learn More
The Center-Lock™ Pin Grabber Coupler is designed for use on machines sized from 311-385 — and is designed to engage and disengage almost every tool designed for these machines.Learn More
WesTrac and our power systems partners Energy Power Systems Australia (EPSA), provide WA, NSW and ACT with Caterpillar Electric Power Systems, such as generator sets, automatic transfer switches (ATS), uninterruptible power supply (UPS) and switchgears.
EPSA is the Australian Dealer responsible for the sale of new and used Caterpillar engines and design of the installations.
WesTrac provides build-up, installation, servicing, repair and management of power generation plant and equipment, as well as industrial, truck and marine engines and transmissions – 24/7.
It is a formidable combination, providing an unrivalled service – proven reliable Cat power and superb service and parts supply.
You will find the strategic WesTrac/EPSA alliance at work throughout WA, NSW and ACT wherever prime or standby power is required.