320 Hydraulic Excavator

320 Hydraulic Excavator

The Cat® 320 excavator brings premium performance with simple-to-use technologies like Cat GRADE with 2D, Grade Assist, and Payload – all standard equipment from the factory to boost your operator efficiencies up to 45%. Combine these features with a new cab, longer maintenance intervals that lower your maintenance costs up to 15%, and a power system that reduces fuel consumption by up to 25% and you have a low-cost-per-unit-of-production excavator that’s perfect for medium- to heavy-duty applications.

Engine Model
Cat C4.4 ACERT
Net Flywheel Power
162 hp
Operating Weight- North America
50100 lb
Tail Swing Radius
9.3 ft

Engine

Engine Model
Cat C4.4 ACERT
Net Flywheel Power
162hp
Net Power - SAE J1349/ISO 9249
162HP
Engine Model
Cat C4.4 ACERT
Net Flywheel Power
162HP
Bore
4in
Stroke
5in
Displacement
269in³
Gross Power - SAE J1995
164mm H2O
Net Power - SAE J1349
162mm H2O
Engine RPM - Operation
1650r/min
Engine RPM - Travel
1800r/min
Gross Power – SAE J1995
164hp
Net Power – SAE J1349
162hp
Bore
4in
Stroke
5in
Displacement
269in3
Engine rpm: Operation
1650rpm
Engine rpm: Travel
1800rpm

Weights

Operating Weight- North America
50100lb
Operating Weight
49600lb
Note (1)
Reach boom, R2.9 (9'6") stick, HD 1.19 m3 (1.56 yd3) bucket and 790 mm (31 in) triple grouser shoes, 4.2 mt (9,300 lb) counterweight
Operating Weight - North America
49600lb
Note (2)
Reach boom, R2.9 (9'6") stick, HD 1.19 m3 (1.56 yd3) bucket and 600 mm (24 in) triple grouser shoes, 4.2 mt (9,300 lb) counterweight
Note
Long undercarriage, Reach boom, R2.9 (9'6") stick, HD 1.19 m3 (1.56 yd3) bucket and 790 mm (31 in) triple grouser shoes, 4.2 mt (9,300 lb) counterweight
Operating Weight - Europe/Australia & New Zealand
48300lb
Note
Long undercarriage, Reach boom, R2.9 (9'6") stick, HD 1.19 m3 (1.56 yd3) bucket and 600 mm (24 in) triple grouser shoes, 4.2 mt (9,300 lb) counterweight

Dimensions: Reach Boom 5.7 m (18'8"); R2.9 (9'6") Stick

Tail Swing Radius
9.3ft
Ground Clearance
1.5ft

Dimensions: Reach Boom 5.7 m (18'8"); R2.9 (9'6") Stick

Length to Center of Rollers
12.0ft
Track Length
12.0ft
Track Gauge
9.3ft
Transport Width: 600 mm (24 in) Shoes
9.8ft
Transport Width: 700 mm (28 in) Shoes
10.1ft
Transport Width: 790 mm (31 in) Shoes
10.4ft
Counterweight Clearance
3.4ft
Note
With GD 0.8m3 bucket and 790 mm (35") shoes.
Note
Reach boom as same dimensions as HD reach boom
Shipping Height
10.2ft
Shipping Length
31.3ft

Working Ranges: Reach Boom 5.7 m (18'8"); R2.9 (9'6") Stick

Maximum Digging Depth
22ft
Maximum Reach at Ground Level
32.3ft
Maximum Cutting Height
30.7ft
Maximum Loading Height
21.3ft
Minimum Loading Height
7.1ft
Maximum Depth Cut for 2440 mm (8'0") Level Bottom
21.5ft
Maximum Vertical Wall Digging Depth
17ft

Working Ranges - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

Bucket Digging Force (ISO)
103kN
Maximum Cutting Height
30.7ft
Maximum Depth Cut for 2440 mm (8'0") Level Bottom
21.5ft
Maximum Digging Depth
22ft
Maximum Loading Height
21.3ft
Maximum Reach - Ground Level
32.3ft
Maximum Vertical Wall Digging Depth
17ft
Minimum Loading Height
7.1ft

Working Ranges & Forces

Stick Digging Force - SAE
23212lbf

Hydraulic System

Main System - Maximum Flow - Implement
113gal/min
Maximum Pressure - Equipment - Heavy Lift Mode
5510psi
Main System - Maximum Flow - Total
113gal/min
Maximum Pressure - Swing
3886psi
Maximum Pressure - Travel
4974psi
Main System – Maximum Flow (Total)
113gal/min
Maximum Pressure - Equipment - Normal
5075psi
Maximum Pressure – Travel
4974psi
Maximum Pressure – Swing
3886psi

Dimensions

Shipping Length
31ft
Tail Swing Radius
9.3ft
Ground Clearance
1.6ft
Track Gauge
7.9ft
Counterweight Clearance
3.4ft

Service Refill Capacities

Fuel Tank Capacity
86.6gal (US)
Cooling System
6.6gal (US)
Engine Oil
4gal (US)
Final Drive - Each
1.3gal (US)
Hydraulic System - Including Tank
61.8gal (US)
Hydraulic Tank
30.4gal (US)
DEF Tank
10.3gal (US)
Swing Drive - Each
1.3gal (US)
Fuel Tank Capacity
96.2gal
Cooling System
6.6gal
Engine Oil
4.0gal
Swing Drive (each)
1.3gal
Final Drive (each)
1.3gal
Hydraulic System (including tank)
57.6gal
Hydraulic Tank
30.4gal
DEF Tank
7.9gal

Swing

Maximum Swing Torque
54440ft·lbf
Swing Speed
11.25r/min
Swing Speed
11.25rpm
Maximum Swing Torque
54440lbf-ft

Drive

Maximum Drawbar Pull
46311lbf
Maximum Travel Speed
3.5mile/h
Maximum Gradeability
35°--70%
Maximum gradeability
35°--70%
Maximum Travel Speed
3.5mph
Maximum Drawbar Pull
46311lbf

Dimensions - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

Counterweight Clearance
3.4ft
Length - Center of Rollers
12ft
Note (1)
With GD 0.8m3 bucket and 790 mm (35") shoes.
Note (2)
Reach boom as same dimensions as HD reach boom
Shipping Height
9.7ft
Shipping Length
31.3ft
Track Gauge
7.8ft
Track Length
12ft
Transport Width - 600 mm (24 in) Shoes
9.8ft
Transport Width - 700 mm (28 in) Shoes
10.1ft
Transport Width - 790 mm (31 in) Shoes
10.4ft

Dimensions - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

Ground Clearance
1.5ft
Tail Swing Radius
9.3ft

Standard Equipment:

  • Cab
    • ROPS, sound suppression
    • Mechanically adjustable seat
    • High-resolution 203 mm (8 in) LCD touchscreen monitor
  • Cat Connect Technology
    • Cat Product Link
    • Cat GRADE with 2D
    • Cat GRADE with Assist
    • Cat PAYLOAD
  • Engine
    • Three selectable power modes
    • Auto engine idle shutdown
    • 46°C (115°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
    • Auto hydraulic warm up
    • Auto two-speed travel
    • Boom and stick drift reduction valve
  • 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
    • Remote flash
  • Safety And Security
    • Rearview camera
    • Right-hand-side camera (Europe only)
    • Right-hand mirror
    • Ground-level engine shutoff switch
    • Right-hand handrail and hand hold
    • Signaling/warning horn

Optional Equipment:

  • Cab
    • Air-adjustable seat with heat (Deluxe only)
    • High-resolution 254 mm (10 in) LCD touchscreen monitor
  • Cat Connect Technology
    • Cat GRADE with Advanced 2D (not available on SLR)
    • Cat GRADE with 3D (not available on SLR)
  • 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
  • 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
    • 4700 kg (10,400 lb) counterweight for SLR boom and stick
  • Safety And Security
    • Right-hand-side camera
    • 360° visibility