Back to listing page

323 - NR4

Medium Excavators

The Cat® 323 delivers power, speed, and high production performance. With more standard technology than previous models, the highest lift capacity in the lineup, plus reduced fuel and maintenance costs, the Cat 323 has all you need to take your business to the next level.

Show

Net Power - ISO 9249 150.1 kW

Engine Model Cat C7.1

Engine Power - ISO 14396 151 kW

Bore 105 mm

Availability

Please Call Admin

Request A Quote Download Brochure

find related used machines

323 - NR4

Request A Quote

OVERVIEW

High Performance with Speed and Efficiency

FEATURES & BENEFITS

LATEST FEATURES

    Cab Monitor Improvements.     Continuously improved user interface allows for intuitive navigation, minimizing performance... Read more

MOVE MORE WITH LESS FUEL

    Use up to 15% less fuel than the Cat 323D2 L excavator.     Increase operator efficiency by up to 45% with a suite of Ca... Read more

TECHNOLOGY THAT GETS WORK DONE

    Boost productivity up to 45% versus traditional grading with standard Cat Grade with 2D system – includes indicate-only and laser capability... Read more

TAKE THE GUESSWORK OUT OF MANAGING YOUR EQUIPMENT

    Cat® Inspect is a mobile application that allows you to easily perform digital preventative maintenance (PM) checks, inspections, and daily walka... Read more

DESIGNED FOR OPERATORS

    Two cab options – Comfort and Deluxe – let you choose the level of comfort you need.     Enjoy wide spacing between consoles... Read more

BUILT FOR LONG TERM PRODUCTION

    Protect hydraulic components in cold weather. The auto warm-up feature speeds hydraulic oil warming in cooler temperatures.     &n... Read more

SIMPLE TO OPERATE

    You can navigate quickly on the standard high-resolution 203 mm (8 in) touchscreen monitor, or with the optional 254 mm (8 in) touchscreen monito... Read more

SAFELY HOME EVERY DAY

    2D E-Fence prevents the excavator from moving outside of operator-defined set points; the system works with thumb and bucket combinations along w... Read more

LOWER MAINTENANCE COSTS

    Extended maintenance intervals reduce maintenance costs by 20% over the 323D2 series excavator (savings calculated over 12,000 machine hours). &n... Read more

SPECIFICATIONS FOR 323 - NR4

Collapse All

Engine

Net Power - ISO 9249	150.1 kW
Engine Model	Cat C7.1
Engine Power - ISO 14396	151 kW
Bore	105 mm
Stroke	135 mm
Displacement	7.01 l
Net Power - ISO 9249 (DIN)	204 hp (metric)
Engine Power - ISO 14396 (DIN)	205 hp (metric)
Biodiesel Capability	Up to B20¹
Emissions	Meets China Nonroad Stage IV emission standards.
Note (1)	Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,000 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)	¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). *Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Hydraulic System

Main System - Maximum Flow	429 l/min (113 gal/min)
Maximum Pressure - Equipment	35000 kPa
Maximum Pressure - Travel	34300 kPa
Maximum Pressure - Swing	27500 kPa

Swing Mechanism

Swing Speed	11.25 r/min
Maximum Swing Torque	82 kN·m

Weights

Operating Weight	24500 kg
Note	Long undercarriage, Heavy Duty (HD) Reach boom, HD R2.9 (9'6") stick, HD 1.40 m³ (1.83 yd³) bucket and 600 mm (24") HD triple grouser shoes and 5400 kg (11,900 lb) counterweight.

Service Refill Capacities

Fuel Tank Capacity	345 l
Cooling System	25 l
Engine Oil	25 l
Swing Drive - Each	12 l
Final Drive - Each	4 l
Hydraulic System - Including Tank	234 l
Hydraulic Tank	115 l
DEF Tank	41 l

Dimensions

Boom	HD Reach 5.7 m (18'8")
Stick	HD Reach 2.9 m (9'6")
Bucket	HD 1.40 m³ (1.83 yd³)
Shipping Height - Top of Cab	2960 mm
Handrail Height	2950 mm
Shipping Length	9530 mm
Tail Swing Radius	2830 mm
Counterweight Clearance	1050 mm
Ground Clearance	470 mm
Track Length	4450 mm
Length to Center of Rollers	3650 mm
Track Gauge	2380 mm
Transport Width	2980 mm

Working Ranges & Forces

Maximum Digging Depth	6730 mm
Boom	HD Reach 5.7 m (18'8")
Stick	HD Reach 2.9 m (9'6")
Bucket	HD 1.40 m³ (1.83 yd³)
Maximum Reach at Ground Level	9870 mm
Maximum Cutting Height	9450 mm
Maximum Loading Height	6480 mm
Minimum Loading Height	2160 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	6560 mm
Maximum Vertical Wall Digging Depth	5620 mm
Bucket Digging Force - ISO	140 kN
Stick Digging Force - ISO	107 kN