The new Cat 323F L is a purpose-built machine powered by a fuel-efficient U.S. EPA Tier 4 Final C7.1 ACERT engine. With plenty of counterweight, robust structures, a state-of-the-art hydraulic system, and Cat Grade Control Depth and Slope* you can move tons of material – literally – all day long with tremendous stability, speed, and precision. When you add in a quiet operator environment that keeps you comfortable and productive, easy-to-reach service points that make your routine maintenance fast and simple, and multiple Cat work tools that help you take on a variety of tasks, you just won’t find a better, more efficient 23-ton excavator – any place, anywhere. Bottom line: If you are in the business of road construction, underground utilities, or commercial and residential site development, you need the versatile Cat 323F L in your fleet. *Cat Grade Control Depth and Slope hardware is standard with R2.9 (9’6″) sticks. See “Integrated Technologies” within the “BENEFITS AND FEATURES” tab for more details.
Monitor, manage, and enhance your job site operations
Cat CONNECT makes smart use of technology and services to improve your job site efficiency. Using the data from technology-equipped machines, you’ll get more information and insight into your equipment and operations than ever before. Cat Connect technologies offer improvements in these key areas: Equipment Management – increase uptime and reduce operating costs. Productivity – monitor production and manage job site efficiency. Safety – enhance job site awareness to keep your people and equipment safe.
LINK technologies like Product Link™ are deeply integrated into your machine and wirelessly communicate key information, including location, hours, fuel usage, idle time, and event codes.
Easy access to Product Link data via the online VisionLink user interface can help you see how your machine or fleet is performing. You can use this information to make timely, fact-based decisions that can boost job site efficiency and productivity and lower costs.
Cat GRADE with ASSIST
Cat GRADE with ASSIST delivers breakthrough gains in efficiency and productivity. With a touch of a button, the simple-to-use system automates grade work typically done by the operator with manual controls. In fact, operators at all experience levels can reach target grade up to 45% faster than with traditional grading techniques. It also has other built-in benefits such as grade protect, ceiling protect, and floor protect. Bottom line is you will get more speed and accuracy out of your machine with less manual input and fatigue.
Cat Grade Control Depth and Slope
The factory-integrated Cat Grade Control system, standard on the 323F with R2.9 (9'6") stick, delivers 2D bucket tip elevation guidance to the cab to help operators create precise planes and slopes with ease. Real-time bucket tip elevation guidance on the easy-to-read standard cab monitor indicates how much to cut or fill. Fast response sensors deliver immediate feedback. Integrated joystick buttons help operators make quick adjustments to maintain consistent, quality grades. Built-in alerts can be set to warn the operator if the linkage or bucket approaches a predefined elevation or depth like when working in areas with low ceilings or digging near water lines. Staking and checking is minimized, which reduces ground crews and enhances job site safety. The system works best in simple 2D applications such as digging basements or grading steep embankments. You can easily upgrade to AccuGrade™ when 3D control is required.
The dealer-installed AccuGrade system provides 3D guidance for making complex cuts and contours, eliminating the need for staking and checking. A dedicated monitor displays a digital design plan with 3D bucket tip positioning and elevation guidance, indicating precisely where to work and how much to cut or fill. The plug-and-play capability on the 323F L simplifies upgrading. Choose from satellite (GNSS) control for large projects with complex designs or total station (UTS) systems in areas with limited reception.
Powerful and fuel efficient to meet your expectations
Every Tier 4 Final ACERT engine is equipped with a combination of proven electronic, fuel, air, and aftertreatment components. Applying these time-tested technologies lets us meet your high expectations for productivity, fuel efficiency, reliability, and service life. Following are the results you can expect:
Improved fluid efficiency of up to 5% over Tier 4 Interim products, including Diesel Exhaust Fluid (DEF) consumption.
High performance across a variety of applications.
Enhanced reliability through commonality and simplicity of design.
Maximized uptime and reduced cost with world-class Cat dealer support.
Minimized impact on emission systems – with no operator interaction required.
Durability with long service life.
Better fuel economy with minimized maintenance costs.
Same great power and response.
More Powerful, Reliable Engine Electronics
Cat Tier 4 Final engine electronics are more powerful and robust than ever, enhancing your experience and increasing quality and reliability through the most demanding applications.
Next Generation Fuel Systems
Injection timing precisely controls the fuel injection process, which provides more control of combustion for the cleanest, most efficient fuel burn. To maximize your value, Caterpillar engineers specified fuel systems based on the power and performance demands for each engine. The high-pressure common rail fuel system with full electronic injection improves precision and control, reducing soot and boosting the engine’s performance.
Innovative Air Management
Cat Tier 4 Final engines feature innovative air management systems that optimize airflow and enhance power, efficiency, and reliability. A range of simple, reliable turbocharging solutions based on engine size and application allows us to match turbo performance to rated output for high productivity, excellent fuel efficiency, long life, and low operating costs for you.
Cat NOx Reduction System
The Cat NOx Reduction System captures and cools a small quantity of exhaust gas and then routes it back into the combustion chamber to drive down temperatures and reduce NOx emissions. The result of more than a decade of Caterpillar engineering research into this technology is the most reliable system of its type.
Caterpillar designed Tier 4 Interim products with Tier 4 Final standards in mind. By planning ahead, we minimized design changes to deliver the reliability and performance you demand. The aftertreatment solution utilized for Tier 4 Final products is the next evolutionary step for Cat engines with ACERT Technology. To meet the additional 80% reduction in NOx emissions required by Tier 4 Final emission standards, Caterpillar engineers only needed to add one new system to the already proven aftertreatment solution in use, Selective Catalytic Reduction (SCR).
Diesel Exhaust Fluid (DEF)
Cat engines equipped with an SCR system inject DEF into the exhaust to reduce NOx emissions. DEF is a precisely mixed solution of 32.5% high purity chemical grade urea and 67.5% de-ionized water. DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1. ISO 22241-1 requirements are met by many brands of DEF, including those that carry the AdBlue or API certifications.
An Emissions Solution That Works
The Cat C7.1 ACERT engine meets Tier 4 Final emission standards, and it does so without interrupting your job process. In fact, the engine’s diesel particulate filter is maintenance free. Simply turn the engine on and go to work.
Fuel Savers That Add Up
The 323F L consumes up to 10% less fuel than the previous series model, and lowering engine speed without impacting production is one of the key contributors. Automatic engine speed control also contributes by lowering rpm when the machine doesn’t need it for work. Automatic engine idle shutdown turns the engine off when it’s been idling for more than a specified amount of time that you can set through the monitor. Plus you have a choice of three power modes – high power, standard power, and eco mode. Simply change between modes through the console switch panel to meet the work needs in front of you. Collectively, all of these benefits add up to reduced fuel consumption, reduced exhaust and sound emissions, reduced repair and maintenance costs, and increased engine life for you.
A Cool Design For Any Temperature
A side-by-side cooling system allows you to put the machine to work in extremely hot and cold conditions. The system is completely separated from the engine compartment to reduce noise and heat. Plus it features easy-to-clean cores and a variable-speed fan that runs only when needed to ensure maximum efficiency.
Biodiesel Not A Problem
The C7.1 ACERT engine can run on B20 biodiesel that meets ASTM 6751 standards – all to give you more potential fuel-saving flexibility.
Power to move your material with speed and precision
A Powerful, Efficient Design
When it comes to moving heavy material quickly and efficiently, you need hydraulic horsepower – the type of ground-breaking power the 323F L can deliver. Major hydraulic components like pumps and valves are located close together so shorter tubes and lines can be used. This design leads to less friction loss, reduced pressure drops, and more power to the ground for the work you need to get done.
Control Like No Other
Controllability is one of the main attributes of Cat excavators, and one of the key contributors to this is the main control valve. The valve opens slowly when your range of joystick lever movement is small and opens rapidly when movement is high. It puts flow where you need it when you need it, which leads to smoother operation, greater efficiency, and lower fuel consumption.
Auxiliary Hydraulics For Added Versatility
Auxiliary hydraulics give you greater tool versatility so you can take on more work with just one machine, and there are several options from which you can choose. A quick coupler circuit, for example, will allow you to switch from one tool to another in a matter of minutes – all from the comfort and convenience of the cab.
Boom and Stick Oil Re-Circulation For Added Efficiency
The 323F L regenerates the flow of oil from the head end of the boom and stick cylinders to the rod end of the boom and stick cylinders during the work cycle to save energy and improve fuel efficiency. It’s optimized for any dial speed setting you select, which results in less pressure loss for higher controllability, more productivity, and lower operating costs for you.
More brawn for your bigger jobs
If your jobs require a lot of heavy lifting, look into the 323F L heavy counterweight configuration. This machine features nearly 5350 kg (11,800 lb) of weight out back – roughly 1250 kg (3,000 lb) more than our standard 323F L. It also has a reinforced frame to support the additional weight along with larger boom cylinders and heavy-duty undercarriage. The benefit to you is a well-designed, well-balanced machine that will lift up to 20 percent more weight out front and over the side than our standard model.
With the heavy counterweight, you get a more stable platform for working with larger tools like a hydraulic thumb, multi-processor, and high-capacity buckets. It also helps keep the machine flat on its tracks when you are picking and placing large pipe and trench boxes, concrete construction barriers, and other heavy materials.
If reach is what you need, you can stretch your working envelope with an optional R3.9 (12'10") stick. Built specifically for the heavy counterweight configuration, this stick combined with a heavy-duty boom will give you over 7580 mm (24'10") of dig depth and 10 680 mm (35'0") of reach, making it ideal for deep sewer applications.
Comfort and convenience to keep you productive
A Safe, Quiet Cab
The ROPS cab provides you with a safe working environment. It also contributes to your comfort because it’s attached to a reinforced frame with special viscous mounts that limit vibration and unnecessary sound. Add in special roof lining and sealing and you have a cab that’s as quiet inside as today’s top pickup trucks.
Comfortable Seat Options
The seat range includes air suspension, heated, and air cooled options. All seats include a reclining back, upper and lower slide adjustments, and height and tilt angle adjustments to meet your needs for maximum comfort.
A Cool and Warm Environment
The automatic climate control system features multiple air outlets with filtered ventilation. Air flows on the floor, behind the seat, and in front of you to make your work in either hot or cold weather much more pleasant and productive.
Controls Just For You
The right and left joystick consoles can be adjusted to improve your comfort and productivity during the course of a day. Also, the right joystick features a button that will reduce engine speed when you are not working to help save fuel. Touch it once and speed reduces; touch it again and speed increases for normal operation.
A Helpful Monitor
The LCD monitor is easy to see and navigate. Programmable in up to 42 languages to meet today’s diverse workforce, the monitor clearly displays critical information you need to operate efficiently and effectively. Plus it projects the image from the standard rearview camera to help you see what’s going on around you so you can stay safely focused on the job at hand.
Ample Storage and Auxiliary Power
Storage spaces are located in the front, rear, and side consoles of the cab. A drink holder accommodates a large mug, and a shelf behind the seat stores large lunch or toolboxes. Two 12-volt power supply sockets are conveniently located near the key storage areas for charging your electronic devices like an MP3 player, a cell phone, or a tablet.
Options to take on your far-reaching and up-close tasks
Booms and Sticks
The 323F is offered with a range of booms and sticks. Each is built with internal baffle plates for added durability, and each undergoes ultrasound inspection to ensure weld quality and reliability. Large box-section structures with thick, multi-plate fabrications, castings, and forgings are used in high-stress areas such as the boom nose, boom foot, boom cylinder, and stick foot to improve durability. The boom nose pin is a captured flag design for enhanced durability.
Two Types Available
There are two basic boom types available to meet your work needs: HD and SLR.
HD = Heavy Duty
This type of boom is best for the majority of your applications like up-close excavating, heavy-duty lifting, and breaking and demolishing a variety of material.
SLR = Super Long Reach
With reaches up to 15 720 mm (51'7"), this configuration is ideal for forming slopes and cleaning settlement tanks and ponds. Sticks are matched to the boom you choose. Longer sticks are better when you need to dig deep or load trucks. Shorter sticks provide greater breakout force and increase your productivity when using hydromechanical work tools. Talk to your Cat dealer to pick the best front linkage for your specific line of work.
Structures and Undercarriage
Built to work in your rugged applications
The 323F L is a well-built machine designed to give you a very long service life. The upper frame has mountings made specifically to support the heavy-duty cab; it is also reinforced around key areas that take on stress like the boom foot and skirt. Massive bolts are used to attach the track frames to the body, and additional bolts are used to increase the machine’s digging force, which leads to more productivity for you.
The 323F L undercarriage contributes significantly to its outstanding stability and durability. Track shoes, links, rollers, idlers, and final drives are all built with long-lasting, high-tensile-strength steel. Cat Grease Lubricated Track 2 (GLT2) track link protects moving parts by keeping water, debris, and dust out and grease sealed in, which delivers longer wear life and reduced noise when traveling on either a flat, heavy bed of rock or a steep, wet field of mud.
Depending on the configuration you choose, three counterweight options – 4.1 mt (9,040 lb), 4.7 mt (10,360 lb), and 5.35 mt (11,790 lb) – are available. All are built with thick steel plates and reinforced fabrications to make them less susceptible to damage, and all have curved surfaces that match the machine’s sleek, smooth appearance along with integrated housings to help protect the standard rearview camera.
Tools to make you productive and profitable
Get The Most Out Of One Machine
You can easily expand the performance of your machine by utilizing any of the variety of attachments offered by Cat Work Tools.
Change Jobs Quickly and Accurately
Quick couplers like the Cat Pin Grabber allow you to switch tools for the job at hand with incredible ease and speed, helping to maximize your uptime. Caterpillar’s optional tool control system takes it a step further by adding best-in-class accuracy because it can store the flows and pressures of up to 10 different work tools. Simply select the tool you need through the monitor and go to work – quickly and efficiently.
Dig, Finish, Load and Compact
A wide range of buckets dig everything from top soil to harsh, abrasive material. For finishing and grading work, compact and shallow ditch cleaning buckets fit the need. A Cat compactor prepares the area for the next phase of construction.
Break, Demolish and Scrap
A hydraulic hammer equips your machine for breaking rock in quarries and preparing trenches on construction sites. Taking down bridge pillars and heavily reinforced concrete is no problem. Multi-processor, pulverizer, and shear attachments take your machine into structure demolition jobs and process the debris for reuse and recycle.
Move and Handle
Add a thumb and you have the ability to move and handle brush, rocks, and debris. For constant material handling, a grapple is your solution. Choose from three different styles for picking, sorting, and loading trash, demolition debris, or recyclables.
Set Up Your Machine For Profitability
Your Cat dealer can install hydraulic kits to properly operate all Cat Work Tool attachments – maximizing the machine’s uptime and your profits. All Cat Work Tool attachments are supported by the same Cat dealer network as your Cat machine.
Designed to make your maintenance quick and easy
Safe, Convenient Access
You can reach most routine maintenance items like fluid taps and grease points from the safety and convenience of ground level. You will also find filters banked together for higher service efficiency. Compartments feature wide service doors designed to help prevent debris entry, and they also securely latch in place to help make your service work simpler.
A Cool Design
The high-ambient cooling system features a fuel-saving variable-speed fan and a side-by-side-mounted radiator and oil and air coolers for easy cleaning. Wider clearance between the two makes blowing off debris easy for you, which can help improve your machine’s reliability and performance.
A Fresh Idea
When you select ventilation inside the cab, outside air enters through the fresh air filter. The filter is conveniently located on the side of the cab to make it easy to reach and replace, and it is protected by a lockable door that can be opened with the engine key.
More Service Benefits
Filters are banked together to enhance service efficiency. The fuel tank’s drain cock makes it easy and simple for you to remove water and sediment during routine maintenance. Plus an integrated fuel level indicator pops up to help you reduce the possibility of fuel tank overfilling.
Features to help protect you day in and day out
A Safe, Quiet Cab
The ROPS cab provides you with a safe working environment when properly seated and belted. It also contributes to your comfort because it’s attached to a reinforced frame with special viscous mounts that limit vibration and unnecessary sound. Add in special roof lining and sealing and you have a cab that’s as quiet inside as any of today’s top pickup trucks.
Secure Contact Points
Multiple large steps get you into the cab as well as a leg up to the compartments. Extended hand and guard rails allow you to safely climb to the upper deck. Anti-skid plates reduce your slipping hazards in all types of weather conditions, and they can be removed for cleaning.
Ample glass gives you excellent visibility out front and to the side, and the standard rearview camera gives you a clear field of view behind the machine through the cab monitor. The available split-configuration windshield features an upper window with handles that make it easy to slide and store above you and a lower window that can be removed and stored on the inside wall of the cab. The large skylight also serves as an emergency exit and provides you with enhanced overhead visibility.
Halogen lights provide plenty of illumination, and the cab and boom lights can be programmed to stay on for up to 90 seconds after the engine has been turned off to help you safely exit the machine.
Complete Customer Care
Support you can count on
Worldwide Parts Availability
Cat dealers utilize a worldwide parts network to maximize your machines’ uptime. Plus they can help you save money with Cat remanufactured components.
Advice You Can Trust
What are the job requirements and machine attachments? What production is needed? Your Cat dealer can provide recommendations to help you make the right machine choices.
Financial Options Just For You
Consider financing options and day-to-day operating costs. Look at dealer services that can be included in the machine’s cost to yield lower owning and operating costs over time.
Support Agreements To Fit Your Needs
Cat dealers offer a variety of customer support agreements and work with you to develop a plan to meet your specific needs. These plans can cover the entire machine, including attachments, to help protect your investment.
Operating Techniques To Boost Your Profits
Improving operating techniques can boost your profits. Your Cat dealer has videos, literature, and other ideas to help you increase productivity. Caterpillar also offers simulators and certified operator training to help maximize the return on your investment.
What’s Best For You Today…And Tomorrow
Repair, rebuild, or replace? Your Cat dealer can help you evaluate the cost involved so you can make the best choice for your business.
Generations ahead in every way
The C7.1 ACERT engine meets Tier 4 Final emission standards.
The 323F L burns less fuel than the 320E model it replaces, which means less emissions.
Cat Grade Control Depth and Slope is standard with the R2.9 (9'6") stick, improving job site efficiency.
The machine has the flexibility of running on either ultra-low-sulfur diesel (ULSD) fuel with 15 ppm of sulfur or less or biodiesel (B20) fuel blended with ULSD.
A ground-level overfill indicator rises when the tank is full to help the operator avoid spilling.
The QuickEvac™ option ensures fast, easy, and secure changing of engine and hydraulic oil.
The machine is built to be rebuilt with major structures and components capable of being remanufactured to reduce waste and replacement costs.
Overall, the 323F L is an efficient, productive machine that’s designed to conserve our natural resources for generations ahead.
Cat® C7.1 ACERT™
Net Flywheel Power
Engine rpm – Operation
Engine rpm – Travel
Net Power – SAE J1349/ISO 9249
Net Power – ISO 14396
Long Undercarriage, Reach Boom R2.9 (9'6"), 1.19 m3 (1.56 yd3) bucket and 790 mm (31 in) shoes.
Maximum Drawbar Pull
Maximum Travel Speed
Service Refill Capacities
Fuel Tank Capacity
Swing Drive (each)
Final Drive (each)
Hydraulic System (including tank)
Standard with Long Undercarriage
Optional for Long Undercarriage
Number of Shoes Each Side – Long Undercarriage
Number of Track Rollers Each Side – Long Undercarriage
Number of Carrier Rollers Each Side
ISO 6395 (External)
ISO 6396 (Inside Cab)
ISO 10265 2008
ISO 10262 1998
ISO 12117-2 2008
Main System – Maximum Flow (2 pumps)
Main System – Maximum Flow (per pump)
Maximum Pressure – Equipment – Heavy Lift Mode
Maximum Pressure – Equipment/Travel
Maximum Pressure – Swing
Pilot System Maximum Flow for Implement
Pilot System Maximum Pressure
Boom Cylinder – Bore
Boom Cylinder – Stroke
Stick Cylinder – Bore
Stick Cylinder – Stroke
Bucket Cylinder – Bore
Bucket Cylinder – Stroke
C7.1 ACERT certified to Tier 4 Final emission standards
Three selectable power modes: – HP, STD and ECO
Variable-speed fan with viscous clutch
One-touch low idle with automatic engine speed control
Automatic engine idle shutdown
Three-stage fuel filtration system with water separator and indicator
4600 m (15,090 ft) altitude capability with derate from 3000 m (9,840 ft)
52° C (126° F) high-ambient cooling capacity with derate from 48° C (118° F)
115 amp alternator
Radial seal air filter with double filter element
Electric fuel priming pump
Capability of using biodiesel fuel (B20)
Starting kit for –18° C (0° F)
Electric boom regeneration circuit
Stick regeneration circuit
One-touch lifting mode
Automatic two-speed travel
Boom and stick drift reduction valve
Reverse swing damping valve
High-performance hydraulic return filter
Canada compliant accumulator
Fine swing control
Sound suppressed ROPS cab with viscous mount
Openable skylight as emergency exit
Openable laminated front upper windshield with assist device
Removable tempered lower windshield with in-cab storage bracket
High back seat with air suspension, seat heater and head rest
Fully adjustable seat, console and armrest
51 mm (2 in) width seat belt
Full graphic 7 inch LCD monitor with distortion-free rearview camera picture
Automatic bi-level air conditioner with pressurized function
Joystick with modulation switch (one modulation switch and three on/off switches per one joystick)
24V AM/FM radio (includes auxiliary input)
24V radio ready with stereo speakers and flexible antenna
12V × 2 power supply with sockets (maximum 10 amp)