323 - Tier 4 / Stage V

Net Power - ISO 9249
172 HP / 128.5 kW
Operating Weight
55100 lb / 25000 kg
Maximum Digging Depth
22.1 ft / 6730 mm

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

Engine
Net Power - ISO 9249 172 HP / 128.5 kW
Net Power - ISO 9249 (DIN) 175 hp (metric)
Engine Model Cat C7.1
Engine Power - ISO 14396 174 HP / 129.4 kW
Engine Power - ISO 14396 (DIN) 176 hp (metric)
Bore 4 in / 105 mm
Stroke 5 in / 135 mm
Displacement 428 in³ / 7.01 l
Biodiesel Capability Up to B20¹
Emissions Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 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 2,200 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 5075 psi / 35000 kPa
Maximum Pressure - Travel 4974 psi / 34300 kPa
Maximum Pressure - Swing 3988 psi / 27500 kPa
Swing Mechanism
Swing Speed 11.25 r/min
Maximum Swing Torque 60300 ft·lbf / 82 kN·m
Weights
Operating Weight 55100 lb / 25000 kg
Note Long undercarriage, Reach boom, R2.9 (9'6"), Reach stick, Heavy Duty (HD) 1.38 m³ (1.81 yd³) bucket, 790 mm (31") HD triple grouser track shoes and 5,400 kg (11,900 lb) counterweight.
Service Refill Capacities
Fuel Tank Capacity 86.6 gal (US) / 345 l
Cooling System 6.6 gal (US) / 25 l
Engine Oil 6.6 gal (US) / 25 l
Swing Drive - Each 1.6 gal (US) / 6 l
Final Drive - Each 1.3 gal (US) / 5 l
Hydraulic System - Including Tank 61.8 gal (US) / 234 l
Hydraulic Tank 30.4 gal (US) / 115 l
DEF Tank 10.8 gal (US) / 41 l
Dimensions
Boom Reach 5.7 m (18'8")
Stick Reach 2.9 m (9'6")
Bucket HD 1.30 m³ (1.71 yd³)
Shipping Height - Top of Cab 9.7 ft / 2960 mm
Handrail Height 9.7 ft / 2950 mm
Shipping Length 31.3 ft / 9530 mm
Counterweight Clearance 3.4 ft / 1050 mm
Ground Clearance 1.5 ft / 470 mm
Track Length 14.6 ft / 4450 mm
Length to Center of Rollers 12 ft / 3650 mm
Transport Width 10.4 ft / 3170 mm
Working Ranges & Forces
Maximum Digging Depth 22.1 ft / 6730 mm
Boom Reach 5.7 m (18'8")
Stick Reach 2.9 m (9'6")
Bucket HD 1.30 m³ (1.71 yd³)
Maximum Reach at Ground Level 32.4 ft / 9870 mm
Maximum Cutting Height 31 ft / 9450 mm
Maximum Loading Height 21.3 ft / 6480 mm
Minimum Loading Height 7.1 ft / 2160 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 21.5 ft / 6560 mm
Maximum Vertical Wall Digging Depth 18.8 ft / 5740 mm
Bucket Digging Force - ISO 34308 lbf / 140 kN
Stick Digging Force - ISO 26094 lbf / 107 kN
Air Conditioning System
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons).
Sustainability
Recyclability 98%

Standard Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • CAB
    • Rollover protective structure (ROPS)
    • Air-adjustable seat with heat (Deluxe only)
    • Auto-adjustable seat with heat and air ventilation (Premium only)
    • High-resolution 254 mm (10 in) LCD touchscreen monitor
  • CAT TECHNOLOGY
    • VisionLink®
    • Remote Flash
    • Remote Troubleshoot
    • Cat Grade 2D
    • Cat Assist
    • Cat Payload
  • ELECTRICAL SYSTEM
    • Two 1,000 CCA maintenance-free batteries
    • Programmable time-delay LED working lights
    • LED chassis light, left-hand/right-hand boom lights, cab lights
  • ENGINE
    • Cat 7.1 single turbo diesel engine
    • Three selectable power modes
    • Automatic engine speed control
    • 46°C (115°F) high-ambient cooling capacity (Europe only)
    • 52°C (125°F) high-ambient cooling capacity
    • -18°C (0°F) cold start capability
    • Double element air filter with integrated precleaner
    • Reversing electric cooling fans
  • HYDRAULIC SYSTEM
    • Boom and stick regeneration circuits
    • Auto hydraulic warm up
    • Auto two-speed travel
    • Boom and stick drift reduction valve
    • Auto dig boost
    • Auto heavy lift
  • SAFETY AND SECURITY
    • 2D E-Fence
    • Auto hammer stop
    • Rearview camera
    • Right-side-view camera
    • Lockable disconnect switch
    • Ground-level engine shutoff switch
    • Right-hand handrail and handhold
    • Signaling/warning horn
  • SERVICE AND MAINTENANCE
    • Sampling ports for Scheduled Oil Sampling (S·O·S?)
    • Ground-level and platform-level engine oil dipsticks
    • Integrated vehicle health management system
  • UNDERCARRIAGE AND STRUCTURES
    • Tie-down points on base frame

Optional Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • BOOMS AND STICKS
    • 5.7 m (18'8") Reach boom
    • 5.7 m (18'8") HD Reach boom
    • 2.7 m (8'10") stub + 3.3 m (10'10") fore, Variable Angle boom
    • 8.85 m (29'0") Super Long Reach boom
    • 2.5 m (8'2") Reach stick
    • 2.9 m (9'6") Reach stick
    • 2.5 m (8'2") HD Reach stick (Chile, Turkey only)
    • 2.9 m (9'6") HD Reach stick (Chile, Turkey only)
    • 3.9 m (12'10") Reach stick
    • 2.9 m (9'6") HD Thumb Ready Reach stick
    • 6.28 m (20'7") Super Long Reach stick
  • CAB
    • Cat Stick Steer
  • CAT TECHNOLOGY
    • VisionLink Productivity
    • Cat Grade Connectivity
    • Cat Grade 2D with Attachment Ready Option (ARO)
    • Cat Grade 3D single GNSS
    • Cat Grade 3D dual GNSS
    • Cat Tilt Rotator (TRS) Integration
    • Operator Coaching
  • ENGINE
    • -32°C (-25°F) cold start capability
  • HYDRAULIC SYSTEM
    • Boom and stick lowering check valves
    • SmartBoom™ (Europe only)
    • Hammer return filter circuit
    • Advanced tool control (two pump, one/two way high-pressure flow)
    • Hydraulic efficiency monitoring
    • Medium-pressure circuit
    • Quick coupler circuit for Cat Pin Grabber
  • SAFETY AND SECURITY
    • Cat Command (remote control)
    • 360° visibility
    • Inspection lighting
  • UNDERCARRIAGE AND STRUCTURES
    • 600 mm (24") single grouser shoes
    • 600 mm (24") HD double grouser shoes
    • 600 mm (24") HD triple grouser shoes
    • 700 mm (28") HD triple grouser shoes
    • 790 mm (31") HD triple grouser shoes
    • 900 mm (35") HD triple grouser shoes
    • 4200 kg (9,300 lb) counterweight
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