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320 Hydraulic Excavator

320 Hydraulic Excavator

At a Glance

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


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


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Operating Weight 50265lb

Working Ranges & Forces

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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

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

Swing Mechanism

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Maximum Swing Torque 60300ft·lbf

Service Refill Capacities

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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)


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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