320 Hydraulic Excavator

320 Hydraulic Excavator

The 320 raises the bar for efficiency and fuel economy in this size class. With the industry’s highest level of standard factory technology, a new cab focused on operator comfort, plus lower fuel and maintenance costs, the 320 will set a new pace for productivity and profit in your operation.

Net Power - ISO 9249
172 HP
Operating Weight
50265 lb
Maximum Digging Depth
22.1 ft
Engine Model
Cat C4.4e TTA

Engine

Net Power - ISO 9249
172HP
Engine Model
Cat C4.4e TTA
Engine Power - ISO 14396
173HP
Bore
4in
Stroke
5in
Displacement
269in³

Weights

Operating Weight
50265lb

Working Ranges & Forces

Maximum Digging Depth
22.1ft
Boom
Reach 5.7 m (18'8")
Stick
Reach 2.9 m (9'6")
Bucket
1.19 m ³ (1.56 yd³)
Maximum Reach at Ground Level
32.4ft
Maximum Cutting Height
30.8ft
Maximum Loading Height
21.4ft
Minimum Loading Height
7.1ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
21.5ft
Maximum Vertical Wall Digging Depth
17ft
Bucket Digging Force - ISO
38811lbf
Stick Digging Force - ISO
23911lbf

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

Maximum Swing Torque
60300ft·lbf

Service Refill Capacities

Fuel Tank Capacity
86.6gal (US)
Cooling System
6.6gal (US)
Engine Oil
4gal (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
10.3gal (US)

Dimensions

Boom
Reach 5.7 m (18'8")
Stick
Reach 2.9 m (9'6")
Bucket
1.19 m ³ (1.56 yd³)
Shipping Height - Top of Cab
9.8ft
Handrail Height
9.8ft
Shipping Length
31ft
Tail Swing Radius
9.3ft
Counterweight Clearance
3.4ft
Ground Clearance
1.6ft
Track Length
14.7ft
Length to Center of Rollers
12ft
Track Gauge
7.9ft
Transport Width
9.8ft

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Cab
    • ROPS, sound suppression
    • Mechanically adjustable seat
    • High-resolution 203 mm (8 in) LCD touchscreen monitor
  • Cat Technology
    • Cat Product Link
    • Cat GRADE with 2D
  • Cat Technology
    • Cat GRADE with Assist
    • Cat PAYLOAD
    • 2D E-Fence
    • Lift Assist
    • Auto Dig Boost
    • Remote troubleshoot
  • Engine
    • Three selectable power modes
    • Auto engine speed control
    • 52°C (126°F) ambient cooling capacity
    • -32°C (-25°F) cold start capability
    • Reversing electric cooling fans
    • Biodiesel capability up to B20
  • Hydraulic System
    • Boom and stick regeneration circuits
    • Slide joysticks
    • Auto hydraulic warm up
    • Auto two-speed travel
    • Boom and stick drift reduction valve
    • Advanced tool control - Europe only
  • Boom And Sticks
    • 5.7 m (18'8") reach boom, 2.9 m (9'6") stick
  • Undercarriage And Structures
    • Tie-down points on base frame
  • 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
  • Service And Maintenance
    • Sampling ports for Scheduled Oil Sampling (S·O·S)
    • Ground-level and platform-level engine oil dipsticks
  • Safety And Security
    • Rear and right-hand-sideview cameras
    • Signaling/warning horn
    • Right-hand mirror
    • Ground-level engine shutoff switch
    • Right-hand handrail and hand hold
    • Signaling/warning horn

Optional Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Cab
    • Air-adjustable seat with heat (Deluxe only)
    • High-resolution 254 mm (10 in) LCD touchscreen monitor
    • Cat Stick Steer
  • Cat Technology
    • Cat GRADE with 3D
    • Cat GRADE with Advanced 2D (not available on SLR)
    • Cat GRADE with 3D (not available on SLR)
  • Safety And Security
    • Cat Command remote control
    • Right-hand-side camera
    • 360° visibility
    • Inspection Lighting
    • Cat Detect People Detection
  • Engine
    • 52°C (125°F) high-ambient cooling capacity
  • Hydraulic System
    • Boom and stick lowering check valves
    • Hammer return filter circuit
    • Combined flow/high-pressure auxiliary circuit
    • Medium-pressure circuit
    • Quick coupler circuit for Cat Pin Grabber
    • Auto Heavy Lift
  • Boom And Sticks
    • 8.85 m (29'0") SLR boom, 6.28 m (20'7") SLR stick
  • Undercarriage And Structures
    • 600 mm (24") triple grouser shoes
    • 700 mm (28") triple grouser shoes
    • 790 mm (31") triple grouser shoes
    • 900 mm (35") triple grouser shoes
    • 4200 kg (9,300 lb) counterweight for HD boom and stick
  • Electrical System
    • Premium surround lighting package

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
HCS70/55 / HCS70/55
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
HCS70/55 / S70/55
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
Pin-on High Flow / HCS70/55
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
Pin-on / HCS70/55
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
HCS70 / HCS70
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
HCS70 / S70
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
Pin-on High Flow / HCS70
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
Pin-on / HCS70
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-24 ton Excavators
Weight
1503 lb
Interface Options: Top-Bottom
Pin-on / S70

TRS18 Tiltrotator

Machine Class
18-24 ton Excavators
Weight
1468 lb
Interface Options: Top-Bottom
S70 / S70

S2050 Straight Scrap & Demolition Shear

Weight - Boom Mount
9206 lb
Length
140 in
Height
60 in

H120 S Hydraulic Hammer

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

H120 GC S Hammer

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

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

GSH425-750-S

Capacity
1 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

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 900 mm (36 in)

Width
36 in
Capacity
1.06 yd³
Weight
1959 lb

Heavy Duty Bucket 600 mm (24 in)

Width
24 in
Capacity
0.6 yd³
Weight
1540 lb

General Duty Bucket 900 mm (36 in)

Width
36 in
Capacity
1.24 yd³
Weight
1840 lb

General Duty Bucket 600 mm (24 in)

Width
24 in
Capacity
0.72 yd³
Weight
1457 lb

Specifications

Engine

Net Power - ISO 9249
172HP
Engine Model
Cat C4.4e TTA
Engine Power - ISO 14396
173HP
Bore
4in
Stroke
5in
Displacement
269in³

Weights

Operating Weight
50265lb

Working Ranges & Forces

Maximum Digging Depth
22.1ft
Boom
Reach 5.7 m (18'8")
Stick
Reach 2.9 m (9'6")
Bucket
1.19 m ³ (1.56 yd³)
Maximum Reach at Ground Level
32.4ft
Maximum Cutting Height
30.8ft
Maximum Loading Height
21.4ft
Minimum Loading Height
7.1ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
21.5ft
Maximum Vertical Wall Digging Depth
17ft
Bucket Digging Force - ISO
38811lbf
Stick Digging Force - ISO
23911lbf

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

Maximum Swing Torque
60300ft·lbf

Service Refill Capacities

Fuel Tank Capacity
86.6gal (US)
Cooling System
6.6gal (US)
Engine Oil
4gal (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
10.3gal (US)

Dimensions

Boom
Reach 5.7 m (18'8")
Stick
Reach 2.9 m (9'6")
Bucket
1.19 m ³ (1.56 yd³)
Shipping Height - Top of Cab
9.8ft
Handrail Height
9.8ft
Shipping Length
31ft
Tail Swing Radius
9.3ft
Counterweight Clearance
3.4ft
Ground Clearance
1.6ft
Track Length
14.7ft
Length to Center of Rollers
12ft
Track Gauge
7.9ft
Transport Width
9.8ft

Standard/Optional Features

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Cab
    • ROPS, sound suppression
    • Mechanically adjustable seat
    • High-resolution 203 mm (8 in) LCD touchscreen monitor
  • Cat Technology
    • Cat Product Link
    • Cat GRADE with 2D
  • Cat Technology
    • Cat GRADE with Assist
    • Cat PAYLOAD
    • 2D E-Fence
    • Lift Assist
    • Auto Dig Boost
    • Remote troubleshoot
  • Engine
    • Three selectable power modes
    • Auto engine speed control
    • 52°C (126°F) ambient cooling capacity
    • -32°C (-25°F) cold start capability
    • Reversing electric cooling fans
    • Biodiesel capability up to B20
  • Hydraulic System
    • Boom and stick regeneration circuits
    • Slide joysticks
    • Auto hydraulic warm up
    • Auto two-speed travel
    • Boom and stick drift reduction valve
    • Advanced tool control - Europe only
  • Boom And Sticks
    • 5.7 m (18'8") reach boom, 2.9 m (9'6") stick
  • Undercarriage And Structures
    • Tie-down points on base frame
  • 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
  • Service And Maintenance
    • Sampling ports for Scheduled Oil Sampling (S·O·S)
    • Ground-level and platform-level engine oil dipsticks
  • Safety And Security
    • Rear and right-hand-sideview cameras
    • Signaling/warning horn
    • Right-hand mirror
    • Ground-level engine shutoff switch
    • Right-hand handrail and hand hold
    • Signaling/warning horn

Optional Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Cab
    • Air-adjustable seat with heat (Deluxe only)
    • High-resolution 254 mm (10 in) LCD touchscreen monitor
    • Cat Stick Steer
  • Cat Technology
    • Cat GRADE with 3D
    • Cat GRADE with Advanced 2D (not available on SLR)
    • Cat GRADE with 3D (not available on SLR)
  • Safety And Security
    • Cat Command remote control
    • Right-hand-side camera
    • 360° visibility
    • Inspection Lighting
    • Cat Detect People Detection
  • Engine
    • 52°C (125°F) high-ambient cooling capacity
  • Hydraulic System
    • Boom and stick lowering check valves
    • Hammer return filter circuit
    • Combined flow/high-pressure auxiliary circuit
    • Medium-pressure circuit
    • Quick coupler circuit for Cat Pin Grabber
    • Auto Heavy Lift
  • Boom And Sticks
    • 8.85 m (29'0") SLR boom, 6.28 m (20'7") SLR stick
  • Undercarriage And Structures
    • 600 mm (24") triple grouser shoes
    • 700 mm (28") triple grouser shoes
    • 790 mm (31") triple grouser shoes
    • 900 mm (35") triple grouser shoes
    • 4200 kg (9,300 lb) counterweight for HD boom and stick
  • Electrical System
    • Premium surround lighting package

Attachments

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
HCS70/55 / HCS70/55
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
HCS70/55 / S70/55
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
Pin-on High Flow / HCS70/55
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
Pin-on / HCS70/55
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
HCS70 / HCS70
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
HCS70 / S70
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
Pin-on High Flow / HCS70
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-25
Interface Options: Top-Bottom
Pin-on / HCS70
Rotation Speed
7 seconds, per 1 full rotation

TRS18 Tiltrotator

Machine Class
18-24 ton Excavators
Weight
1503 lb
Interface Options: Top-Bottom
Pin-on / S70

TRS18 Tiltrotator

Machine Class
18-24 ton Excavators
Weight
1468 lb
Interface Options: Top-Bottom
S70 / S70

S2050 Straight Scrap & Demolition Shear

Weight - Boom Mount
9206 lb
Length
140 in
Height
60 in

H120 S Hydraulic Hammer

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

H120 GC S Hammer

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

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

GSH425-750-S

Capacity
1 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

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 900 mm (36 in)

Width
36 in
Capacity
1.06 yd³
Weight
1959 lb

Heavy Duty Bucket 600 mm (24 in)

Width
24 in
Capacity
0.6 yd³
Weight
1540 lb

General Duty Bucket 900 mm (36 in)

Width
36 in
Capacity
1.24 yd³
Weight
1840 lb

General Duty Bucket 600 mm (24 in)

Width
24 in
Capacity
0.72 yd³
Weight
1457 lb