323D L/LN

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The D Series incorporates innovations for improved performance, controllability and versatility.


Engine Model C6.4 ACERT C6.4 ACERT Less
Net Flywheel Power 150.0 hp 110.0 kW Less
Net Power – ISO 9249 150.0 hp 110.0 kW Less
Bore 4.02 in 102.0 mm Less
Stroke 5.12 in 130.0 mm Less
Displacement 390.55 in3 6.4 L Less
Net Power – EEC 80/1269 147.51 hp 110.0 kW Less


Operating Weight 52910.0 lb 24000.0 kg Less
Operating Weight – Minimum 50706.0 lb 23000.0 kg Less
Operating Weight – Maximum 52910.0 lb 24000.0 kg Less

Service Refill Capacities

Fuel Tank Capacity 108.31 gal 410.0 L Less
Cooling System 6.6 gal 25.0 L Less
Swing Drive 2.11 gal 8.0 L Less
Final Drive (each) 2.11 gal 8.0 L Less
Hydraulic System (including tank) 68.68 gal 260.0 L Less
Hydraulic Tank 31.7 gal 120.0 L Less

Swing Mechanism

Swing Torque 45728.85 lb ft 62.0 kN·m Less


Maximum Drawbar Pull 46310.63 lb 206.0 kN Less
Maximum Travel Speed 3.42 mph 5.5 km/h Less

Hydraulic System

Main Implement System – Maximum Flow (2x) 54.16 gal/min 205.0 L/min Less
Pilot System – Maximum Flow 8.45 gal/min 32.0 L/min Less
Boom Cylinder – Bore 4.72 in 120.0 mm Less
Boom Cylinder – Stroke 49.61 in 1260.0 mm Less
Stick Cylinder – Bore 5.51 in 140.0 mm Less
B1 Family Bucket Cylinder – Bore 4.72 in 120.0 mm Less
B1 Family Bucket Cylinder – Stroke 43.46 in 1104.0 mm Less
CB2 Family Bucket Cylinder – Bore 5.31 in 135.0 mm Less
CB2 Family Bucket Cylinder – Stroke 45.51 in 1156.0 mm Less


Shipping length 395.47 in 10045.0 mm Less
Transport width 117.32 in 2980.0 mm Less
Shipping Height 10.4 ft 3170.0 mm Less
Counterweight clearance 40.16 in 1020.0 mm Less


The Cat® C6.4 engine with ACERT™ Technology offers better fuel efficiency and reduced wear. It works at the point of combustion to optimize engine performance and provide low exhaust emissions. By combining ACERT Technology with the new Economy Mode and Power Management, customers can balance the demands of performance and fuel economy to suit their requirements and application.


The hydraulic system has been designed to provide reliability and outstanding controllability with increased digging forces, lifting capacity and drawbar pull. The Tool Control System provides enhanced flexibility. The Heavy Lift Mode maximizes lifting performance and maintains excellent stability.

Operator Comfort

Provides maximum space, wider visibility and easy access to switches. The monitor is a full-color graphical display that allows the operator to understand the machine information easily. Overall, the new cab provides a comfortable environment for the operator.

Electronic Control System

The compact, full-color, graphical display monitor displays machine, maintenance, diagnostic and prognostic information in twenty different languages. The new Economy Mode is also selected from the monitor. To minimize sun glare, the monitor angle is adjustable.


Caterpillar design and manufacturing techniques assure outstanding durability and service life from these important components. The 323D comes standard with grease lubricated tracks. Cat designed excavator undercarriage is stable, durable and low maintenance for good machine stability and transportability.

Environmentally Responsible Design

Quieter operation, lower engine emissions, less fluid disposal and cleaner service can help you meet or exceed worldwide regulations and protect the environment.


More productive. Faster cycle times for truck loading and rock scraping. Maintains optimum hammering frequency for effective, steady productivity.

Booms, Sticks and Linkage

Caterpillar excavator booms and sticks are built for performance and long service life. Three types of booms and four sticks are available, offering a range of configurations suitable for a wide variety of applications. The bucket linkage pins have been enlarged to improve reliability and durability. All booms and sticks are stress relieved.

Work Tools

A variety of work tools, including buckets, couplers, hammers, crushers, pulverizers, multiprocessors, shears and grapples are available.

Service and Maintenance

Fast, easy service has been designed in with extended service intervals, advanced filtration, convenient filter access and user-friendly electronic diagnostics for increased productivity and reduced maintenance costs.

Complete Customer Support

Your Cat dealer offers a wide range of services that can be set up under a customer support agreement when you purchase your equipment. The dealer will help you choose a plan that can cover everything from machine and attachment selection to replacement.