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323 Hydraulic Excavator

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      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.

      Net Power - ISO 9249
      172 HP
      Operating Weight
      54900 lb
      Maximum Digging Depth
      22.1 ft
      Engine Model
      Cat C7.1e TA

      Engine

      Net Power - ISO 9249
      172HP
      Engine Model
      Cat C7.1e TA
      Engine Power - ISO 14396
      174HP
      Bore
      4in
      Stroke
      5in
      Displacement
      428in³

      Weights

      Operating Weight
      54900lb

      Working Ranges & Forces

      Maximum Digging Depth
      22.1ft
      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
      32.4ft
      Maximum Cutting Height
      31ft
      Maximum Loading Height
      21.3ft
      Minimum Loading Height
      7.1ft
      Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
      21.6ft
      Maximum Vertical Wall Digging Depth
      18.8ft
      Bucket Digging Force - ISO
      34308lbf
      Stick Digging Force - ISO
      26094lbf

      Hydraulic System

      Main System - Maximum Flow
      429 l/min (113 gal/min)
      Maximum Pressure - Equipment
      5075psi
      Maximum Pressure - Travel
      4974psi
      Maximum Pressure - Swing
      3988psi

      Swing Mechanism

      Swing Speed
      11.25r/min
      Maximum Swing Torque
      60300ft·lbf

      Service Refill Capacities

      Fuel Tank Capacity
      86.6gal (US)
      Cooling System
      6.6gal (US)
      Engine Oil
      6.6gal (US)
      Swing Drive - Each
      3.2gal (US)
      Final Drive - Each
      1.3gal (US)
      Hydraulic System - Including Tank
      61.8gal (US)
      Hydraulic Tank
      30.4gal (US)
      DEF Tank
      10.8gal (US)

      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
      9.9ft
      Handrail Height
      9.9ft
      Shipping Length
      31.3ft
      Tail Swing Radius
      9.3ft
      Counterweight Clearance
      3.5ft
      Ground Clearance
      1.7ft
      Track Length
      14.7ft
      Length to Center of Rollers
      12ft
      Track Gauge
      7.9ft
      Transport Width
      9.9ft

      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
        • Cat Product Link
        • Remote Flash
        • Remote Troubleshoot
        • Cat Grade with 2D
        • Cat Grade with Assist
        • Cat Payload
        • E-Fence
        • Lift assist
      • 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
        • Biodiesel capability up to B20
      • 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
        • Rear and right-hand-sideview cameras
        • 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
      • 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 (Turkey only)
        • 2.9 m (9'6") HD Reach stick (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
        • Auxiliary relay
      • Cat Technology
        • Cat Grade with Advanced 2D
        • Cat Grade with single GNSS
        • Cat Grade with 3D dual GNSS
      • Engine
        • -32°C (-25°F) cold start capability
      • Hydraulic System
        • Boom and stick lowering check valves
        • Hammer return filter circuit
        • Advanced tool control (two pump, one/two way high-pressure flow)
        • Medium-pressure circuit
        • Quick coupler circuit for Cat Pin Grabber
      • Safety And Security
        • Cat Detect People Detection
        • 360° visibility
        • Swing alarm
        • Cat Command remote control
        • Inspection lighting
      • Service And Maintenance
        • Integrated vehicle health management system
      • Undercarriage And Structures
        • 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
        • 4.2 mt (9,300 lb) counterweight
        • 5.4 mt (11,900 lb) counterweight

      H120 S Hydraulic Hammer

      Impact Energy Class
      3500 ft·lbf
      Blows per Minute
      350-620
      Maximum Operating Weight
      4101 lb

      H130 GC S Hammer

      Impact Energy Class
      4425 ft-lb
      Blows per Minute
      350-700
      Maximum Operating Weight
      5471.4 lb

      H120 GC S Hammer

      Impact Energy Class
      2950 ft-lb
      Blows per Minute
      400-800
      Maximum Operating Weight
      3927 lb

      GSH525-950

      Capacity
      1.25 yd³
      Maximum Lift Capacity
      22046 lb
      Shell Type Options
      Semi-open, Closed

      GSH525-750

      Capacity
      1 yd³
      Maximum Lift Capacity
      22046 lb
      Shell Type Options
      Semi-open, Closed

      GSH425-950-S

      Capacity
      1.25 yd³
      Maximum Lift Capacity
      22046 lb
      Shell Type Options
      Semi-open

      GSH520-750

      Capacity
      1 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open, Closed

      GSH425-750-S

      Capacity
      1 yd³
      Maximum Lift Capacity
      22046 lb
      Shell Type Options
      Semi-open

      GSH520-600

      Capacity
      0.75 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open, Closed

      GSH520-500

      Capacity
      0.65 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open, Closed

      GSH420-750-S

      Capacity
      1 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open

      GSH420-600-S

      Capacity
      0.75 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open

      GSH420-500-S

      Capacity
      0.65 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open

      S70 S Type Excavator Coupler: 566-2349

      Weight
      571 lb
      Lifting Hook Capacity
      8 ton (US)
      Width
      17.72 in

      Heavy Duty Bucket 1200 mm (48 in)

      Width
      48 in
      Capacity
      1.56 yd³
      Weight
      2030 lb

      Heavy Duty Bucket 1050 mm (42 in)

      Width
      42 in
      Capacity
      1.31 yd³
      Weight
      1867 lb

      Specifications

      Engine

      Net Power - ISO 9249
      172HP
      Engine Model
      Cat C7.1e TA
      Engine Power - ISO 14396
      174HP
      Bore
      4in
      Stroke
      5in
      Displacement
      428in³

      Weights

      Operating Weight
      54900lb

      Working Ranges & Forces

      Maximum Digging Depth
      22.1ft
      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
      32.4ft
      Maximum Cutting Height
      31ft
      Maximum Loading Height
      21.3ft
      Minimum Loading Height
      7.1ft
      Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
      21.6ft
      Maximum Vertical Wall Digging Depth
      18.8ft
      Bucket Digging Force - ISO
      34308lbf
      Stick Digging Force - ISO
      26094lbf

      Hydraulic System

      Main System - Maximum Flow
      429 l/min (113 gal/min)
      Maximum Pressure - Equipment
      5075psi
      Maximum Pressure - Travel
      4974psi
      Maximum Pressure - Swing
      3988psi

      Swing Mechanism

      Swing Speed
      11.25r/min
      Maximum Swing Torque
      60300ft·lbf

      Service Refill Capacities

      Fuel Tank Capacity
      86.6gal (US)
      Cooling System
      6.6gal (US)
      Engine Oil
      6.6gal (US)
      Swing Drive - Each
      3.2gal (US)
      Final Drive - Each
      1.3gal (US)
      Hydraulic System - Including Tank
      61.8gal (US)
      Hydraulic Tank
      30.4gal (US)
      DEF Tank
      10.8gal (US)

      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
      9.9ft
      Handrail Height
      9.9ft
      Shipping Length
      31.3ft
      Tail Swing Radius
      9.3ft
      Counterweight Clearance
      3.5ft
      Ground Clearance
      1.7ft
      Track Length
      14.7ft
      Length to Center of Rollers
      12ft
      Track Gauge
      7.9ft
      Transport Width
      9.9ft

      Standard/Optional Features

      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
        • Cat Product Link
        • Remote Flash
        • Remote Troubleshoot
        • Cat Grade with 2D
        • Cat Grade with Assist
        • Cat Payload
        • E-Fence
        • Lift assist
      • 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
        • Biodiesel capability up to B20
      • 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
        • Rear and right-hand-sideview cameras
        • 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
      • 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 (Turkey only)
        • 2.9 m (9'6") HD Reach stick (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
        • Auxiliary relay
      • Cat Technology
        • Cat Grade with Advanced 2D
        • Cat Grade with single GNSS
        • Cat Grade with 3D dual GNSS
      • Engine
        • -32°C (-25°F) cold start capability
      • Hydraulic System
        • Boom and stick lowering check valves
        • Hammer return filter circuit
        • Advanced tool control (two pump, one/two way high-pressure flow)
        • Medium-pressure circuit
        • Quick coupler circuit for Cat Pin Grabber
      • Safety And Security
        • Cat Detect People Detection
        • 360° visibility
        • Swing alarm
        • Cat Command remote control
        • Inspection lighting
      • Service And Maintenance
        • Integrated vehicle health management system
      • Undercarriage And Structures
        • 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
        • 4.2 mt (9,300 lb) counterweight
        • 5.4 mt (11,900 lb) counterweight

      Attachments

      H120 S Hydraulic Hammer

      Impact Energy Class
      3500 ft·lbf
      Blows per Minute
      350-620
      Maximum Operating Weight
      4101 lb

      H130 GC S Hammer

      Impact Energy Class
      4425 ft-lb
      Blows per Minute
      350-700
      Maximum Operating Weight
      5471.4 lb

      H120 GC S Hammer

      Impact Energy Class
      2950 ft-lb
      Blows per Minute
      400-800
      Maximum Operating Weight
      3927 lb

      GSH525-950

      Capacity
      1.25 yd³
      Maximum Lift Capacity
      22046 lb
      Shell Type Options
      Semi-open, Closed

      GSH525-750

      Capacity
      1 yd³
      Maximum Lift Capacity
      22046 lb
      Shell Type Options
      Semi-open, Closed

      GSH425-950-S

      Capacity
      1.25 yd³
      Maximum Lift Capacity
      22046 lb
      Shell Type Options
      Semi-open

      GSH520-750

      Capacity
      1 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open, Closed

      GSH425-750-S

      Capacity
      1 yd³
      Maximum Lift Capacity
      22046 lb
      Shell Type Options
      Semi-open

      GSH520-600

      Capacity
      0.75 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open, Closed

      GSH520-500

      Capacity
      0.65 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open, Closed

      GSH420-750-S

      Capacity
      1 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open

      GSH420-600-S

      Capacity
      0.75 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open

      GSH420-500-S

      Capacity
      0.65 yd³
      Maximum Lift Capacity
      17637 lb
      Shell Type Options
      Semi-open

      S70 S Type Excavator Coupler: 566-2349

      Weight
      571 lb
      Lifting Hook Capacity
      8 ton (US)
      Width
      17.72 in

      Heavy Duty Bucket 1200 mm (48 in)

      Width
      48 in
      Capacity
      1.56 yd³
      Weight
      2030 lb

      Heavy Duty Bucket 1050 mm (42 in)

      Width
      42 in
      Capacity
      1.31 yd³
      Weight
      1867 lb