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Cat® 323D3

Operating Weight
22800 kg
Engine Power
113 kW / 154 hp
Bucket Capacity
SDA 1.20 m3 (1.57 yd3)
  • The Cat 323D3 Excavator brings speed, efficiency, and high productivity to your heavy-duty, high production applications.
  • Recognised for High Production, Low Fuel & Maintenance Cost. Lower your cost per ton.


Ensure productivity in the toughest jobs with a 1.20 m³/1.4 m wide severe-duty bucket, reinforced structures and front parts, and a robust undercarriage and carbody.


The latest Electro-Hydraulic (EH) system, Eco mode, and optional fuel consumption tracking in VisionLink® provide more control to enable optimized fuel consumption.


Maximize uptime and extended service intervals, thanks to advanced hydraulic oil filter design and no pilot and case drain filters. A two-stage fuel filter and anti-rust fuel tank help protect the engine against low-quality fuel.

Get more done with

  • New and reinforced bucket resulting in increased performance and longer life.
  • Be productive with a large Cat 1.20 m³ (1.57 yd³) severeduty abrasive resistance bucket.
  • Dig and lift from a stable platform created by the heavyduty counterweight and eight-roller undercarriage.

New Cabin

  • Completely redesigned cab with multiple adjustment seat.
  • New touch screen monitor

Key-less Push to start

  • New consoles & Radio with Bluetooth
  • Optional rear view camera on monitor
  • Optional ROPS & FOG

Increase efficiency with an electro-hydraulic system

  • Entire Pilot system replaced by Electro Hydraulic technology.
  • Electro-hydraulic valve provides required flexibility to limit restriction so energy waste.
  • Significant reductions in hydraulic hose length and number of connections reduces potential for leaks
  • Lower fuel consumption while maintaining controllability
  • Customization to operator preference / style
  • Lower maintenance cost

Proven reliability that delivers peace of mind

The 323D3 Excavator uses reinforced structures, a heavyduty, eight-roller undercarriage, and a durable swing system that helps absorb stresses caused by swing torque – delivering a machine you can rely on.

Ground level maintenance

Most service locations are easily accessible at ground level to allow service and maintenance to get completed quickly and efficiently. A service door on the right side of the upper structure allows ground-level access to the hydraulic pumps, hydraulic filters, engine oil filter, and fuel filters.


  • Front cabin grill for Operator safety
  • Standard LED lights for better night visibility
  • Standard engine emergency stop switch from ground level
  • Anti skid plates on the service platform and steps
  • Optional rear view camera on monitor
  • Optional ROPS & FOG
  • Optional Swing Lock


Net Power - ISO 9249 142 HP
Engine Model Cat C7.1
Engine Power - ISO 14396 151 HP
Bore 4 in
Stroke 5 in
Displacement 428 in³

Main System - Maximum Flow 400 l/min (106 gal/min)
Maximum Pressure - Equipment 5075 psi
Maximum Pressure - Travel 5075 psi
Maximum Pressure - Swing 3625 psi

Swing Speed 11 r/min
Maximum Swing Torque 45581 ft·lbf

Operating Weight 50300 lb

Fuel Tank Capacity 108.3 gal (US)
Cooling System 7.4 gal (US)
Engine Oil 4.8 gal (US)
Swing Drive - Each 1.6 gal (US)
Final Drive - Each 1.3 gal (US)
Hydraulic System - Including Tank 68.7 gal (US)
Hydraulic Tank 36.5 gal (US)

Boom Reach 5.7 m (18'8")
Stick Reach 2.5m (8'2")
Bucket SD 1.20 m³ (1.57 yd³)
Shipping Height - Top of Cab 10 ft
Handrail Height 9.7 ft
Shipping Length 31 ft
Tail Swing Radius 9 ft
Counterweight Clearance 4.3 ft
Ground Clearance 1.5 ft
Track Length 14.8 ft
Length to Center of Rollers 12 ft
Track Gauge 7.1 ft
Transport Width 9.5 ft

Maximum Digging Depth 20.7 ft
Boom Reach 5.7 m (18'8")
Stick Reach 2.5m (8'2")
Bucket SD 1.20 m³ (1.57 yd³)
Maximum Reach at Ground Level 31.1 ft
Maximum Cutting Height 30.3 ft
Maximum Loading Height 20.7 ft
Minimum Loading Height 8.5 ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 19.6 ft
Maximum Vertical Wall Digging Depth 17.3 ft
Bucket Digging Force - ISO 31500 lbf
Stick Digging Force - ISO 26600 lbf


Attachments tailor Cat machines to the specific requirements of a customer's working needs. Caterpillar Attachments enhance the productivity and utility of Caterpillar machines, equipping them for a wide range of tasks and operating requirements, and providing total system solutions for any job application.

  • Large Cat 1.20 m³ (1.57 yd³) severe duty abrasive resistance bucket.
  • Cat® buckets are more than just an add-on, they are an extension of your Cat machines.
  • Each one is perfectly balanced to our excavators so you can take on heaping loads without compromising fuel efficiency or machine health.
  • We built them to fill faster, retain your load, and fit your task.
Pin Grabber Couplers

Cat® Pin Grabber Couplers bring another level of productivity and versatility to your operation.
Add the ability to change attachments quickly and conveniently to your operation, while staying aligned to worldwide safety standards.

GC Hammers
H120 GC S

  • Cat® hydraulic hammers make short work of your demolition, construction, quarry and production breaking needs.
  • Cat Hammers are high performance breakers, designed to help you get the most from your Cat equipment.
  • Cat® Hammers make short work of your demolition, construction, and quarry needs.
  • Combine the simple, lightweight design of the GC S Hammer series with the reliability, durability, and value you expect from Cat products.
  • The result is a low cost per hour solution providing the consistent power and performance you need.

1085MM (43IN) RIPPER

  • Constructed from high-strength steels and built to last, Cat rippers endure in the toughest conditions.
  • The box-section structure is reinforced for maximum rigidity, transmitting the full machine power to the material being ripped.
  • Rippers feature a replaceable wear tip, and most models also come equipped with a replaceable shank protector.

Clamshell Grapples

  • Cat® Clamshell Grapples help you get high production for transfer applications.
  • Move more material with fast opening and closing for short cycle times.
  • The heavy-duty construction and low maintenance of the tool keeps it working longer helping you to save time and money.

Multi-Processor with Concrete Cutter Jaws

  • Cat® Multi-Processors accept multiple interchangeable jaws for a wide range of demolition tasks. Faster cycle times get your jobs done quicker.
  • Greater power means taking on bigger jobs. Quick jaw change gives you the right tool for the task at hand, without slowing you down. All built on a durable, easy to maintain platform


Cat® Scrap and Demolition Shears are designed to make you money. An innovative, robust design and fast cycle times provide the production and reliability you need to be profitable. Cat shears are efficient and can handle everything from structural steel to mixed scrap. Cat shears are designed to get the job done.

Primary Pulverizers

  • Cat P300 Series Primary Pulverizers are designed for applications such as cutting, breaking, and crushing concrete structures during demolition.
  • Mechanical pulverizers are cost-effective tools for recycling demolished concrete debris.
  • The bucket cylinder on the excavator powers the pulverizer, eliminating the need for a dedicated cylinder, associated hydraulics, and additional installation cost.

Vibratory Drum Compactors

  • Vibratory action and dynamic force provides excellent compaction in a compact size.
  • Used for compacting soil, sand or gravel prior to pouring concrete or laying asphalt surfaces. Also ideal for asphalt patch work.

Rotary Cutters

  • Cat® Rotary Cutters help to give you high production in hard material with controlled breaking.
  • Power goes directly to the drums along with mechanical seals to lock in grease and double support bearings offer high torque.
  • The rotary cutter is compatible with Cat hydromechanical work tool brackets in addition to being adaptable to trenching, tunneling and demolition applications.