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323 Hydraulic Excavator

323 Hydraulic Excavator

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 1050 mm (42 in)

Width
42 in
Capacity
1.31 yd³
Weight
1867 lb

Heavy Duty Bucket 1200 mm (48 in)

Width
48 in
Capacity
1.56 yd³
Weight
2030 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 1050 mm (42 in)

Width
42 in
Capacity
1.31 yd³
Weight
1867 lb

Heavy Duty Bucket 1200 mm (48 in)

Width
48 in
Capacity
1.56 yd³
Weight
2030 lb