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320 GC Hydraulic Excavator

320 GC Hydraulic Excavator

At a Glance

Engine Model
Cat C4.4 ACERT
Net Flywheel Power
121 HP
Maximum Drawbar Pull
46131 lbf
Maximum Travel Speed
3.6 mile/h
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The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a new comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance costs by up to 15% to bring you a durable, low-cost-per-hour excavator for light- to medium-duty applications.


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Engine Model Cat C4.4 ACERT
Net Flywheel Power 121HP
Bore 4in
Stroke 5in
Displacement 269in³
Gross Power - SAE J1995 122HP
Net Power - SAE J1349 121kW
Engine RPM - Operation 1700r/min
Engine RPM - Travel 2000r/min


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Maximum Drawbar Pull 46131lbf
Maximum Travel Speed 3.6mile/h
Maximum Gradeability 35°--70%

Service Refill Capacities

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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)


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Operating Weight - Europe 46958lb
Note (1) Standard Undercarriage, Reach Boom, R 2.9 (9'6")Stick, HD 1.0 m3 (1.31yd3 ) bucket and 790mm(31 ") TG shoes, Counterweight (4.2mt / 9,260lb)
Operating Weight - North America 48281lb
Note (2) Standard Undercarriage, Reach Boom, R 2.9 (9'6")Stick, HD 1.0 m3 (1.31yd3 ) bucket and 700mm(28 ") TG shoes, Counterweight (4.2mt / 9,260lb)

Hydraulic System

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Maximum Pressure - Equipment - Normal 5075psi
Main System - Maximum Flow - Total 116gal/min
Maximum Pressure - Swing 3886psi
Maximum Pressure - Travel 4974psi


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Maximum Swing Torque 54440ft·lbf
Swing Speed 11.6r/min

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

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Counterweight Clearance 3.4ft
Note With HD 1.0m3 bucket and 790 mm shoes.
Shipping Height 9.7ft
Shipping Length 31.3ft
Track Gauge 7.2ft
Track Length - Center of Rollers 10.7ft
Transport Width - 790 mm (31 in) Shoes 10.4ft

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

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Ground Clearance 1.5ft
Tail Swing Radius 9.3ft

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

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Maximum Cutting Height 31ft
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 18.7ft
Minimum Loading Height 7.1ft
Bucket Digging Force (ISO) 28935lbf
Bucket Digging Force (SAE) 25759lbf
Stick Digging Force (ISO) 22281lbf
Stick Digging Force (SAE) 21678lbf