Medium Excavators

320 GC Hydraulic Excavator

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320 GC Medium Hydraulic Excavator
320 GC Excavator with a full bucket
320 GC Excavator helping compact a trench
320 GC Excavator switching to a bucket attachment
320 GC track Excavator digging a trench
320 GC Excavator dumping a bucket of dirt
US
Metric

Overview

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 20% 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
121.00 hp
90.00 kW
Gross Power – SAE J1995
122.00 hp
91.00 kW
Net Power – SAE J1349
121.00 hp
91.00 kW
Bore
4.00 in
105.00 mm
Stroke
5.00 in
127.00 mm
Displacement
269.00 in3
4.40 L

Weights

Operating Weight- North America
48300.00 lb
21900.00 kg
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
46958.00 lb
21300.00 kg
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)

Hydraulic System

Main System – Maximum Flow (Total)
116.00 gal/min
442.00 L/min
Maximum Pressure - Equipment - Normal
5075.00 psi
35000.00 kPa
Maximum Pressure – Travel
4974.00 psi
34300.00 kPa
Maximum Pressure – Swing
3886.00 psi
26800.00 kPa

Drive

Maximum gradeability
35°--70%
Maximum Travel Speed
3.60 mph
5.90 km/h
Maximum Drawbar Pull
46131.00 lbf
205.00 kN

Swing

Swing Speed
11.60 rpm
11.60 rpm
Maximum Swing Torque
54440.00 lbf-ft
74.00 kN·m

Service Refill Capacities

Fuel Tank Capacity
96.20 gal
364.00 L
Cooling System
6.60 gal
25.00 L
Engine Oil
4.00 gal
15.00 L
Swing Drive (each)
1.30 gal
5.00 L
Final Drive (each)
1.30 gal
5.00 L
Hydraulic System (including tank)
57.60 gal
218.00 L
Hydraulic Tank
30.40 gal
115.00 L
DEF Tank
7.90 gal
30.00 L

Engine

Engine rpm: Operation
1700.00 rpm
1700.00 rpm
Engine rpm: Travel
2000.00 rpm
2000.00 rpm

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

Shipping Height
10.20 ft
3100.00 mm
Shipping Length
31.30 ft
9530.00 mm

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

Tail Swing Radius
9.30 ft
2830.00 mm

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

Track Length-Length to Center of Rollers
10.70 ft
3270.00 mm

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

Ground Clearance
1.50 ft
470.00 mm

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

Track Gauge
7.20 ft
2200.00 mm
Transport Width: 790 mm (31 in) Shoes
10.40 ft
3170.00 mm
Counterweight Clearance
3.40 ft
1050.00 mm
Note
With HD 1.0m3 bucket and 790 mm shoes.

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

Maximum Digging Depth
22.00 ft
6720.00 mm
Maximum Reach at Ground Level
32.30 ft
9860.00 mm
Maximum Cutting Height
31.00 ft
9450.00 mm
Maximum Loading Height
21.30 ft
6490.00 mm
Minimum Loading Height
7.10 ft
2170.00 mm
Maximum Depth Cut for 2440 mm (8'0") Level Bottom
21.50 ft
6550.00 mm
Maximum Vertical Wall Digging Depth
18.70 ft
5690.00 mm

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

Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN

Engine

Engine Model
Cat C4.4e TA
Net Flywheel Power
143.00 HP
107.00 kW
Bore
4.00 in
105.00 mm
Stroke
5.00 in
127.00 mm
Displacement
269.00 in³
4.40 l
Gross Power - SAE J1995
145.00 HP
108.00 kW
Net Power - SAE J1349
143.00 HP
107.00 kW

Weights

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
48281.00 lb
21900.00 kg

Service Refill Capacities

Fuel Tank Capacity
86.60 gal (US)
345.00 l
Cooling System
6.60 gal (US)
25.00 l
Engine Oil
4.00 gal (US)
15.00 l
Final Drive - Each
1.10 gal (US)
4.00 l
Hydraulic System - Including Tank
61.80 gal (US)
234.00 l
Hydraulic Tank
30.40 gal (US)
115.00 l
DEF Tank
10.30 gal (US)
39.00 l
Swing Drive - Each
3.20 gal (US)
12.00 l

Swing

Maximum Swing Torque
54440.00 ft·lbf
74.00
Swing Speed
11.60 r/min
11.60 r/min

Drive

Maximum Drawbar Pull
46131.00 lbf
205.00 kN
Maximum Travel Speed
3.60 mile/h
5.90 km/h

Hydraulic System

Main System - Maximum Flow - Total
116.00 gal/min
442.00 l/min
Maximum Pressure - Swing
3625.00 psi
25000.00 kPa
Maximum Pressure - Travel
4974.00 psi
34300.00 kPa

Dimensions - Reach Boom - 5.7 m (18'8

Counterweight Clearance
3.40 ft
1050.00 mm
Note
With HD 1.0m3 bucket and 790 mm shoes.
Shipping Height
9.70 ft
2960.00 mm
Shipping Length
31.30 ft
9530.00 mm
Track Gauge
7.20 ft
2200.00 mm
Track Length - Center of Rollers
10.70 ft
3270.00 mm
Transport Width - 790 mm (31 in) Shoes
10.40 ft
3170.00 mm

Dimensions - Reach Boom - 5.7 m (18'8

Ground Clearance
1.50 ft
470.00 mm
Tail Swing Radius
9.30 ft
2830.00 mm

Drive

Maximum Gradeability
35°--70%

Engine

Engine RPM - Operation
1650.00 r/min
1650.00 r/min
Engine RPM - Travel
2000.00 r/min
2000.00 r/min

Weights

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)

Working Ranges - Reach Boom - 5.7 m (18'8

Maximum Cutting Height
31.00 ft
9450.00 mm

Maximum Depth Cut for 2440 mm (8'0") Level Bottom
21.50 ft
6550.00 mm

Working Ranges - Reach Boom - 5.7 m (18'8

Maximum Digging Depth
22.00 ft
6720.00 mm
Maximum Loading Height
21.30 ft
6490.00 mm
Maximum Reach - Ground Level
32.30 ft
9860.00 mm
Maximum Vertical Wall Digging Depth
18.70 ft
5690.00 mm
Minimum Loading Height
7.10 ft
2170.00 mm

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

Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
28935.00
129.00 kN
Bucket Digging Force (SAE)
25759.00
115.00 kN
Stick Digging Force (ISO)
22281.00
99.00 kN
Stick Digging Force (SAE)
21678.00
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN
Bucket Digging Force (ISO)
21678.00 lbf
96.00 kN

Engine

Engine Power - ISO 9249
146.00 HP
109.00 kW
Engine Power - ISO 14396
148.00 HP
110.00 kW

Hydraulic System

Main System - Maximum Flow
442 l/min (116 gal/min)
Maximum Pressure - Equipment
5075.00 psi
35000.00 kPa

Swing Mechanism

Swing Speed
11.60 r/min
11.60 r/min

Weights

Operating Weight
48281.00 lb
21900.00 kg

Dimensions

Boom
Reach 5.7 m (18'8")
Stick
R2.9B1 (9'6")
Bucket
1.00 m³ (1.31 yd³)
Shipping Height - Top of Cab
9.70 ft
2960.00 mm
Handrail Height
9.80 ft
2950.00 mm
Shipping Length
31.30 ft
9530.00 mm
Tail Swing Radius
9.30 ft
2830.00 mm
Counterweight Clearance
3.40 ft
1050.00 mm
Ground Clearance
1.50 ft
470.00 mm
Track Length
10.70 ft
3270.00 mm
Length to Center of Rollers
12.00 ft
3650.00 mm
Track Gauge
7.20 ft
2200.00 mm
Transport Width
10.40 ft
3170.00 mm

Working Ranges & Forces

Maximum Digging Depth
22.00 ft
6720.00 mm
Boom
Reach 5.7 m (18.8)
Stick
R2.9B1 (9'6")
Bucket
1.00 m³ (1.31 yd³)
Maximum Reach at Ground Level
32.30 ft
9860.00 mm
Maximum Cutting Height
31.00 ft
9450.00 mm
Maximum Loading Height
21.30 ft
6490.00 mm
Minimum Loading Height
7.10 ft
2170.00 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
21.60 ft
6550.00 mm
Maximum Vertical Wall Digging Depth
18.70 ft
5690.00 mm
Bucket Digging Force - ISO
28935.00 lbf
129.00 kN

Swing Mechanism

Maximum Swing Torque
54900.00 ft·lbf
74.40 kN·m

Working Ranges & Forces

Stick Digging Force - ISO
22281.00 lbf
99.00 kN

Engine

Net Power - ISO 9249
146.00 HP
109.00 kW
Features

PERFORMANCE WITH LESS FUEL

  • The excavator uses up to 20 percent less fuel than the 320F in similar applications.
  • Match the excavator to the job with power modes; let Smart mode automatically match 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.
  • Valve priority puts hydraulic pressure and flow where you command it to go for fast lightto medium load cycle times.
  • The engine meets U.S. EPA Tier 4 Final and EU Stage IV emission standards with an aftertreatment system that requires no operator input or downtime.
  • Add auxiliary hydraulics to do more work with a range of Cat attachments.
  • Product Link™ comes standard so you can remotely monitor machine health, location, hours, and fuel consumption on demand through the VisionLink® online interface.

LOWER MAINTENANCE COSTS

  • Expect up to 25 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.
  • No required maintenance on the Cat Clean Emissions Module.
  • Using Cat genuine oil and filters and doing your typical S∙O∙S monitoring will double the current service interval to 1,000 hours, giving you greater uptime to do more work.
  • 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-efficiency electric cooling fans only run when needed and reverse to keep cores free from debris.
  • S·O·S ports simplify maintenance and allow for quick, easy extraction of samples for fluid analysis.

RELIABILITY YOU CAN COUNT ON

  • 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.

SAFELY HOME EVERY DAY

  • 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 platformsteps 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.

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.
  • Protect your hammer from overworking. Auto hammer stop warns you after 15 seconds of continuous firing and then automatically shuts it off after 30 seconds -- all to prevent wear and tear on the attachment and excavator.
  • 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.
  • The Cat PL161 Attachment Locator is a Bluetooth device that makes finding your attachments and other gear quick and easy. The Cat App on your phone will locate the device automatically.

DESIGNED FOR OPERATORS

  • 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 righttemperature 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, documentholder, bottle holder, and coat hook are also provided.
  • Use the standard radio’s USB ports and Bluetooth® technology to connect to personal devices.
Standard Equipment
  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • ENGINE
    • Cat C4.4 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 auto engine speed control
    • Auto 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
    • Auto 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
    • Auto 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)
    • 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
    • 790 mm (31" ) triple grouser track shoes
  • ELECTRICAL
    • 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 right hand 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
    • Right 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 TECHNOLOGY
    • Cat Product Link™
    • Auto hammer stop
Optional Equipment
  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • CAT TECHNOLOGY
    • Cat GRADE with Advanced 2D
  • HYDRAULIC SYSTEM
    • 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, left and right hand boom lights for reach, cab lights- 850 lumens
  • STANDARD COMFORT CAB
    • Roller rear sunscreen
  • SERVICE & MAINTENANCE
    • Radiator screen
  • SAFETY & SECURITY
    • Right hand side mirror for use with right-hand-sideview camera or 360° visibility (Europe)
    • Shovel crane package - optional Japan only
  • BUCKET
    • HD buckets 1.0m³ (1.31yd³)
  • UNDERCARRIAGE AND STRUCTURES
    • Long undercarriage
    • Long narrow undercarriage - optional Europe only