320 GC Hydraulic Excavator

Overview
Engine Model
Cat C4.4 ACERT
Net Flywheel Power
121 hp
Operating Weight- North America
48,300 lb
  • Exterior View
  • Interior View

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.

Engine

Engine Model
Cat C4.4 ACERT
Net Flywheel Power
121 hp
Gross Power – SAE J1995
122 hp
Net Power – SAE J1349
121 hp
Bore
4 in
Stroke
5 in
Displacement
269 in3
Engine rpm: Operation
1,700 rpm
Engine rpm: Travel
2,000 rpm
Engine Model
Cat C4.4 ACERT
Net Flywheel Power
143 HP
Bore
4 in
Stroke
5 in
Displacement
269 in³
Gross Power - SAE J1995
145 HP
Net Power - SAE J1349
143 HP
Engine RPM - Operation
1,650 r/min
Engine RPM - Travel
2,000 r/min

Weights

Operating Weight- North America
48,300 lb
Note
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 - Europe
46,958 lb
Note
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)
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
48,281 lb
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

Main System – Maximum Flow (Total)
116 gal/min
Maximum Pressure - Equipment - Normal
5,075 psi
Maximum Pressure – Travel
4,974 psi
Maximum Pressure – Swing
3,886 psi
Main System - Maximum Flow - Total
116 gal/min
Maximum Pressure - Swing
3,886 psi
Maximum Pressure - Travel
4,974 psi

Drive

Maximum gradeability
35°--70%
Maximum Travel Speed
4 mph
Maximum Drawbar Pull
46,131 lbf
Maximum Drawbar Pull
46,131 lbf
Maximum Travel Speed
4 mile/h
Maximum Gradeability
35°--70%

Swing

Swing Speed
12 rpm
Maximum Swing Torque
54,440 lbf-ft
Maximum Swing Torque
54,440 ft·lbf
Swing Speed
12 r/min

Service Refill Capacities

Fuel Tank Capacity
96 gal
Cooling System
7 gal
Engine Oil
4 gal
Swing Drive (each)
1 gal
Final Drive (each)
1 gal
Hydraulic System (including tank)
58 gal
Hydraulic Tank
30 gal
DEF Tank
8 gal
Fuel Tank Capacity
87 gal (US)
Cooling System
7 gal (US)
Engine Oil
4 gal (US)
Final Drive - Each
1 gal (US)
Hydraulic System - Including Tank
62 gal (US)
Hydraulic Tank
30 gal (US)
DEF Tank
10 gal (US)
Swing Drive - Each
1 gal (US)

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

Shipping Height
10 ft
Shipping Length
31 ft
Track Length-Length to Center of Rollers
11 ft
Track Gauge
7 ft
Transport Width: 790 mm (31 in) Shoes
10 ft
Counterweight Clearance
3 ft
Note
With HD 1.0m3 bucket and 790 mm shoes.

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

Tail Swing Radius
9 ft
Ground Clearance
2 ft

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

Maximum Digging Depth
22 ft
Maximum Reach at Ground Level
32 ft
Maximum Cutting Height
31 ft
Maximum Loading Height
21 ft
Minimum Loading Height
7 ft
Maximum Depth Cut for 2440 mm (8'0") Level Bottom
22 ft
Maximum Vertical Wall Digging Depth
19 ft

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

Counterweight Clearance
3 ft
Note
With HD 1.0m3 bucket and 790 mm shoes.
Shipping Height
10 ft
Shipping Length
31 ft
Track Gauge
7 ft
Track Length - Center of Rollers
11 ft
Transport Width - 790 mm (31 in) Shoes
10 ft

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

Ground Clearance
2 ft
Tail Swing Radius
9 ft

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

Maximum Cutting Height
31 ft
Maximum Depth Cut for 2440 mm (8'0") Level Bottom
22 ft
Maximum Digging Depth
22 ft
Maximum Loading Height
21 ft
Maximum Reach - Ground Level
32 ft
Maximum Vertical Wall Digging Depth
19 ft
Minimum Loading Height
7 ft
Bucket Digging Force (ISO)
21,678 lbf
Bucket Digging Force (ISO)
28,935 lbf
Bucket Digging Force (SAE)
25,759 lbf
Stick Digging Force (ISO)
22,281 lbf
Stick Digging Force (SAE)
21,678 lbf

High Performance with Lower Fuel Consumption

  • Use up to 20% less fuel than the 320F excavators.
  • Match the excavator to the job using power modes including new Smart Mode that automatically matches engine and hydraulic power to digging conditions.
  • The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.
  • Your joystick commands adjust pump flow based on valve priority putting hydraulic pressure and flow where it needs to go giving you improved fast light-to-medium load cycle times.
  • The electronically controlled, turbocharged engine meets U.S. EPA Tier 4 Final and EU Stage IV emissions standards using a transparent aftertreatment system that requires no operator input or downtime.
  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
  • Don't let the temperature stop you from working. The excavator has a standard high-ambient temperature capability of 125 º F (52º C) and cold start capability of 0º F (-18º C). An optional -25º F (-32º C) cold start package is available .
  • Work up to 9,480 feet (3000 meters) above sea level without de-rating.
  • Track your performance through standard Product Link that provides location, machine hours, fuel usage, productivity, idle time, diagnostic codes and other machine data on demand through VisionLink ® online interface.
  • Use up to 20% less fuel than the 320F excavators.
  • Match the excavator to the job using power modes including new Smart Mode that automatically matches engine and hydraulic power to digging conditions.
  • The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.
  • Your joystick commands adjust pump flow based on valve priority putting hydraulic pressure and flow where it needs to go giving you improved fast light-to-medium load cycle times.
  • The electronically controlled, turbocharged engine meets U.S. EPA Tier 4 Final and EU Stage IV emissions standards using a transparent aftertreatment system that requires no operator input or downtime.
  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
  • Don't let the temperature stop you from working. The excavator has a standard high-ambient temperature capability of 125 º F (52º C) and cold start capability of 0º F (-18º C). An optional -25º F (-32º C) cold start package is available .
  • Work up to 9,480 feet (3000 meters) above sea level without de-rating.
  • Track your performance through standard Product Link that provides location, machine hours, fuel usage, productivity, idle time, diagnostic codes and other machine data on demand through VisionLink ® online interface.

Reliable, High and Low, Heat and Cold

        

  • Work up to 3000 m (9,840 ft) above sea level without de-rating.
  •     

  • Standard high-ambient temperature capability is 52º C (125º F) with cold start capability at –32º C (–25º F). 
  •     

  • Auto warm up speeds up hydraulic oil warming in cold temperatures and helps prolong the life of components.
  •     

  • Three levels of fuel filtration protect the engine from dirty diesel fuel.
  •     

  • Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to increase undercarriage life.
  •     

  • The center track guiding guard helps keep the excavator track aligned when traveling and working on slopes.
  •     

  • The sloped track frame prevents mud and debris accumulation, helping reduce risk of track damage.
        

  • Work up to 3000 m (9,840 ft) above sea level without de-rating.
  •     

  • Standard high-ambient temperature capability is 52º C (125º F) with cold start capability at –32º C (–25º F). 
  •     

  • Auto warm up speeds up hydraulic oil warming in cold temperatures and helps prolong the life of components.
  •     

  • Three levels of fuel filtration protect the engine from dirty diesel fuel.
  •     

  • Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to increase undercarriage life.
  •     

  • The center track guiding guard helps keep the excavator track aligned when traveling and working on slopes.
  •     

  • The sloped track frame prevents mud and debris accumulation, helping reduce risk of track damage.

Work in Comfort in the All-New Cab

        

  • The Comfort cab has a wide seat that adjusts for operators of all sizes. • Control the excavator comfortably with easy-to-reach controls all located in front of you.
  •     

  • Standard automatic climate control keeps you at the right temperature all shift long.
  •     

  • Advanced viscous mounts reduce cab vibration by up to 50 percent over previous excavator models.
  •     

  • Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles. A cup holder, document holder, bottle holder, and coat hook are also provided.
  •     

  • Use the standard radio’s USB ports and Bluetooth® technology to connect to personal devices.
        

  • The Comfort cab has a wide seat that adjusts for operators of all sizes. • Control the excavator comfortably with easy-to-reach controls all located in front of you.
  •     

  • Standard automatic climate control keeps you at the right temperature all shift long.
  •     

  • Advanced viscous mounts reduce cab vibration by up to 50 percent over previous excavator models.
  •     

  • Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles. A cup holder, document holder, bottle holder, and coat hook are also provided.
  •     

  • Use the standard radio’s USB ports and Bluetooth® technology to connect to personal devices.

Simple to Operate

        

  • Start the engine with a push button; use a Bluetooth key fob, smartphone app, or the unique Operator ID function.
  •     

  • Program each joystick button, including response and pattern, using Operator ID; it will also remember climate control fan and radio settings.
  •     

  • Navigate quickly on the standard high-resolution 203 mm (8 in) touchscreen monitor or with the aid of the jog dial control.
  •     

  • Not sure how a function works or how to maintain the excavator? Always have the operator’s manual at your fingertips in the touchscreen monitor.
        

  • Start the engine with a push button; use a Bluetooth key fob, smartphone app, or the unique Operator ID function.
  •     

  • Program each joystick button, including response and pattern, using Operator ID; it will also remember climate control fan and radio settings.
  •     

  • Navigate quickly on the standard high-resolution 203 mm (8 in) touchscreen monitor or with the aid of the jog dial control.
  •     

  • Not sure how a function works or how to maintain the excavator? Always have the operator’s manual at your fingertips in the touchscreen monitor.

Maintenance

        

  • Expect up to 15 percent less maintenance cost than the 320E. (Savings calculated over 12,000 machine hours.)
  •     

  • Do all daily maintenance at ground level.
  •     

  • Check engine oil level quickly and safely with the new ground-level engine oil dipstick; fill and check engine oil on top of the machine with a conveniently located second dipstick.
  •     

  • Track your excavator’s filter life and maintenance intervals via the in-cab monitor.
  •     

  • Do no required maintenance on the Cat Clean Emissions Module.
  •     

  • Change all fuel filters at a synchronized 500 hours.
  •     

  • Expect the new air intake filter with pre-cleaner to last up to 1,000 hours – a 100 percent increase over the previous filter.
  •     

  • The new hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000-hour replacement interval – 50 percent longer than previous filter designs.
  •     

  • The new high-effi ciency electric cooling fans only run when needed and reverse to keep cores free from debris.
  •     

  • S·O·SSM ports simplify maintenance and allow for quick, easy extraction of samples for fluid analysis.
        

  • Expect up to 15 percent less maintenance cost than the 320E. (Savings calculated over 12,000 machine hours.)
  •     

  • Do all daily maintenance at ground level.
  •     

  • Check engine oil level quickly and safely with the new ground-level engine oil dipstick; fill and check engine oil on top of the machine with a conveniently located second dipstick.
  •     

  • Track your excavator’s filter life and maintenance intervals via the in-cab monitor.
  •     

  • Do no required maintenance on the Cat Clean Emissions Module.
  •     

  • Change all fuel filters at a synchronized 500 hours.
  •     

  • Expect the new air intake filter with pre-cleaner to last up to 1,000 hours – a 100 percent increase over the previous filter.
  •     

  • The new hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000-hour replacement interval – 50 percent longer than previous filter designs.
  •     

  • The new high-effi ciency electric cooling fans only run when needed and reverse to keep cores free from debris.
  •     

  • S·O·SSM ports simplify maintenance and allow for quick, easy extraction of samples for fluid analysis.

Safety

        

  • Access 100 percent of daily maintenance points from ground level – no need for you to climb on top of the excavator.
  •     

  • Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the pushbutton starting feature.
  •     

  • The standard ROPS cab meets ISO 12117-2:2008 requirements.
  •     

  • Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab posts and larger windows.
  •     

  • A rearview camera is standard, and a right-side-view camera is optional.
  •     

  • The new right-hand service platform design provides easy, safe, and quick access to upper service platform; the service platform steps use anti-skid punch plate to prevent slipping.
  •     

  • The handrails comply with ISO 2867:2011 requirements.
  •     

  • The lower frame meets ISO 15818:2017 lifting and tie-down requirements.
        

  • Access 100 percent of daily maintenance points from ground level – no need for you to climb on top of the excavator.
  •     

  • Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the pushbutton starting feature.
  •     

  • The standard ROPS cab meets ISO 12117-2:2008 requirements.
  •     

  • Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab posts and larger windows.
  •     

  • A rearview camera is standard, and a right-side-view camera is optional.
  •     

  • The new right-hand service platform design provides easy, safe, and quick access to upper service platform; the service platform steps use anti-skid punch plate to prevent slipping.
  •     

  • The handrails comply with ISO 2867:2011 requirements.
  •     

  • The lower frame meets ISO 15818:2017 lifting and tie-down requirements.
  • Engine
    • Cat C4.4 ACERT electronically-controlled turbo-charged Tier 4 Final diesel engine
    • Meets U.S. EPA Tier 4 Final and EU Stage IV emissions standards.
    • Two selectable power modes
    • One-touch low idle with automatic engine speed control
    • Automatic engine idle shutdown
    • Recommended for use up to 4500 m altitude (14,764 ft) with engine power derate above 3000 m (9,842.5 ft).
    • 52° C (125° F) high-ambient cooling capacity
    • Cold starting capability for - 32° C (- 25° F)
    • Double element air filter with integrated pre-cleaner
    • Electric fuel priming pump
    • Reversible electric cooling fans
    • Biodiesel capability up to B20
  • Hydraulic System
    • Boom and stick regeneration circuits
    • Electronic main control valve
    • Auto warm up
    • Automatic two-speed travel
    • Boom and stick drift reduction valve
    • Element type main hydraulic filter
    • 3 Buttons Joysticks
    • Electronic main pump
    • Electric refueling pump(Europe only)
  • Standard Comfort Cab
    • ROPS, standard sound suppression
    • High-resolution 8 " (203 mm) LCD touchscreen monitor
    • Automatic Bi-level air conditioner
    • Jog dial and shortcut keys for monitor control
    • Keyless push-to-start engine control
    • Height-adjustable console, 3-steps with tool
    • Mechanically adjustable seat suspension
    • Seat belt, retractable (51 mm [2"] width)
    • Fixed left side console
    • Bluetooth® integrated radio with USB ports
    • 12V DC outlets
    • Document storage
    • Cup and bottle holders
    • Two-piece front window, openable
    • Steel hatch, openable
    • Upper radial wiper with 70/30 w/washer
    • LED dome and lower interior lights
    • Roller front sunscreen
    • Beacon ready
    • Washable floor mat
    • Straight travel pedal (US Only)
  • Undercarriage And Structures
    • Tiedown points on base frame (ISO 15818 Compliant)
    • Standard bottom guards
    • Standard travel motor guards
    • Grease lubricated track links
    • (4200 kg ( 9,260lb) counterweight
    • Standard swing frame
    • Standard swing bearing
    • Base frame with standard track rollers and standard carrier rollers
    • Final drive with standard travel motor
  • Electrical
    • Machine electronic control module (x2)
    • 1000 CCA maintenance-free batteries (x2)
    • Centralized electrical disconnect switch
    • Programmable time-delay LED working lights
    • LED chassis light, LH boom light for reach-850 lumens
  • Boom, Sticks And Linkages
    • 5.7 m (18'8") reach boom
    • 2.9 m (9'6") stick
    • 790 mm (31" ) triple grouser track shoes
    • Bucket linkage, B1-family with lifting eye
  • Safety & Security
    • Rearview camera and side RH mirror
    • Rear and right hand sideview camera (Europe)
    • Neutral lever (lock out) for all controls
    • Anti-skid plate and countersunk bolts on service platform
    • Ground-level accessible secondary engine shutoff switch in cab
    • RH hand rail and hand hold (ISO 2867 compliant)
    • Travel alarm (US only)
  • Service & Maintenance
    • Sampling ports for Scheduled Oil Sampling (S·O·S℠)
    • Grouped location for engine oil and fuel filters
    • Ground level 2nd dipstick for engine oil
    • Remote flash
  • Cat Connect Technology
    • Cat Product Link
  • Hydraulic System
    • Hammer return filter circuit
    • Combined flow/high pressure aux circuit
    • Simplified combined Circuit (2 Way)
    • Quick coupler circuit for Cat Pin Grabber
    • Slider joysticks
    • Smart boom (Europe only)
  • Electrical System
    • LED chassis light, LH & RH boom lights for reach, cab lights- 850 lumens
  • Standard Comfort Cab
    • Roller rear suncreen
  • Safety & Security
    • Radiator screen
    • RH side mirror for use with RH sideview camera or 360° visibility (Europe)
  • Bucket
    • Heavy duty buckets 1.0m3(1.31yd3)

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