345 GC

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Fuel efficiency and serviceability make the 345 GC stand out. Add in a quiet and comfortable ROPS cab, easy-to-use controls, and multiple Cat attachment options and you have one tough excavator capable of taking on a variety of tasks.


Engine Power - ISO 9249 346.0 HP 258.0 kW Less
Engine Model Cat C9.3 Cat C9.3 Less
Engine Power - ISO 14396 347.0 HP 259.0 kW Less
Bore 5.0 in 115.0 mm Less
Stroke 6.0 in 149.0 mm Less
Displacement 568.0 in³ 9.3 l Less

Hydraulic System

Main System - Maximum Flow 630 l/min (166 gal/min) 630 l/min (166 gal/min) Less
Maximum Pressure - Equipment 5076.0 psi 35000.0 kPa Less
Maximum Pressure - Travel 5076.0 psi 35000.0 kPa Less
Maximum Pressure - Swing 4061.0 psi 28000.0 kPa Less

Swing Mechanism

Swing Speed 8.27 r/min 8.27 r/min Less
Maximum Swing Torque 114543.0 ft·lbf 155.0 kN·m Less


Operating Weight 93000.0 lb 42200.0 kg Less

Service Refill Capacities

Fuel Tank Capacity 158.5 gal (US) 600.0 l Less
Cooling System 10.5 gal (US) 40.0 l Less
Engine Oil 8.5 gal (US) 32.0 l Less
Swing Drive 4.8 gal (US) 18.0 l Less
Final Drive - Each 2.1 gal (US) 8.0 l Less
Hydraulic System - Including Tank 111.7 gal (US) 423.0 l Less
Hydraulic Tank 49.1 gal (US) 186.0 l Less


Boom Reach 6.9m (22.8"") Reach 6.9m (22.8"") Less
Stick R2.9TB (9'6"") R2.9TB (9'6"") Less
Bucket HD 2.41 m³ (3.15 yd³) HD 2.41 m³ (3.15 yd³) Less
Shipping Height - Top of Cab 10.6 ft 3230.0 mm Less
Handrail Height 11.1 ft 3370.0 mm Less
Shipping Length 38.1 ft 11620.0 mm Less
Tail Swing Radius 11.6 ft 3530.0 mm Less
Counterweight Clearance 4.3 ft 1300.0 mm Less
Ground Clearance 1.7 ft 520.0 mm Less
Track Length 16.5 ft 5030.0 mm Less
Track Length to Center of Rollers 13.3 ft 4040.0 mm Less
Track Gauge 9.0 ft 2740.0 mm Less
Transport Width 11.0 ft 3340.0 mm Less

Working Ranges & Forces

Maximum Digging Depth 23.6 ft 7200.0 mm Less
Boom Reach 6.9m (22.8"") Reach 6.9m (22.8"") Less
Stick R2.9TB (9'6"") R2.9TB (9'6"") Less
Bucket HD 2.41 m³ (3.15 yd³) HD 2.41 m³ (3.15 yd³) Less
Maximum Reach at Ground Level 37.0 ft 11290.0 mm Less
Maximum Cutting Height 34.6 ft 10540.0 mm Less
Maximum Loading Height 23.7 ft 7210.0 mm Less
Minimum Loading Height 10.3 ft 3130.0 mm Less
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 23.0 ft 7040.0 mm Less
Maximum Vertical Wall Digging Depth 17.7 ft 5390.0 mm Less
Bucket Digging Force - ISO 52860.0 lbf 235.0 kN Less
Stick Digging Force - ISO 44550.0 lbf 198.0 kN Less


  • Get up to 25 percent more fuel efficiency than the 349D2 Tier 3 excavator in similar applications.
  • The C9.3B engine meets Brazil MAR-1 and China Nonroad Stage III emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
  • Match the excavator to the job with two power modes. Smart mode automatically matches engine and hydraulic power to digging conditions, providing max power when needed and reducing power when it isn’t to help save fuel.
  • 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 light- to medium-load cycle times.
  • Advansys bucket tips increase penetration and improve cycle times. Tip changes can be done quickly with a simple lug wrench instead of a hammer or special tool, improving safety and uptime.
  • Add auxiliary hydraulics to do more work with various 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.


  • Work up to 3300 m (10,830 ft) above sea level.
  • Standard high-ambient temperature capability is 52° C (125° F) with cold start capability at –18° C (0° F).
  • Automatic hydraulic oil warm up gets you to work faster in cold temperatures and helps prolong the life of components.
  • Advancedfuelfiltration protects 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.
  • Standard built-in protection includes a heavy-duty bottom guard, travel motor guard, and swivel protection guard.
  • The sloped track frame prevents mud and debris accumulation, helping reduce risk of track damage.


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


  • Start the engine with a push button; use a Bluetooth key fob, smartphone app, or Operator ID passcode.
  • Program your power mode and joystick preferences using Operator ID; the excavator will remember them every time you go to work.
  • 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.
  • Navigate quickly on the standard high-resolution 203 mm (8 inch) touchscreen monitor or with the aid of the jog dial control.
  • The Cat Locator is a Bluetooth device that makes finding your attachments and other gear quick and easy. The excavator's onboard Bluetooth reader or Cat App on your phone will locate the device automatically.
  • 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.


  • Expect up to 30 percent less maintenance cost than the 349D2 Tier 3 excavator due to extended and synchronized service intervals and smaller fluid quantities. (Savings calculated over 12,000 machine hours.)
  • Check hydraulic system oil and easily drain fuel system water from ground level.
  • Track your excavator’s filter life and maintenance intervals via the in-cab monitor.
  • Change all fuel filters at a synchronized 1,000 hours. Oil and fuel filters are grouped and located on right-hand side of machine for easy maintenance.
  • The new air intake filter with pre-cleaner has double the dirt holding capacity of the previous air intake 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.
  • S·O·S ports are on ground level, simplifying maintenance and allowing for quick, easy extraction of fluid samples for analysis.


  • Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the push button starting feature.
  • The standard ROPS cab meets ISO 12117-2:2008 requirements.
  • A travel direction indicator helps operators know which way to activate the travel levers.
  • A ground-level shutoff switch stops all fuel to the engine when activated and shuts down the machine.
  • Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab posts and larger windows.
  • Serrated steps and anti-skid plate on the service platform help prevent slipping.
  • A rearview camera is standard.

345 GC Standard Equipment

  • ROPS, standard sound suppression
  • High-resolution 203 mm (8") LCD touch screen monitor
  • Mechanically adjustable seat

  • Two selectable modes: Power, Smart
  • Automatic engine speed control
  • Up to 3300 m (10,830 ft) altitude capability
  • 52° C (126° F) high-ambient cooling capacity 
  • -18° C (0° F) cold start capability
  • Double element air filter with integrated precleaner
  • Biodiesel capability up to B20

  • Boom and stick regeneration circuit
  • Electronic main control valve
  • Automatic hydraulic oil warm up
  • Reverse swing damping valve
  • Automatic swing parking brake
  • High performance hydraulic return filter
  • Two speed travel
  • Bio hydraulic oil capability
  • Long undercarriage

  • Towing eye on baseframe (ISO 15818 Compliant)
  • 9 mt (19, 842 lb) counterweight

  • Maintenance-free 1000 CCA batteries (x2)
  • Centralized electrical disconnect switch
  • LED chassis light, RH and LH boom lights, cab lights

  • Cat Product Link

  • Grouped location of engine oil & fuel filters
  • Scheduled Oil Sampling (S.O.S) sampling ports

  • Caterpillar One Key security system
  • Lockable external tool / storage box
  • Lockable door, fuel, and hydraulic tank locks
  • Lockable fuel drain compartment
  • Service platform with anti-skid plate & recessed bolts
  • RH handrail & hand hold (ISO 2867 Compliant)
  • Signaling / warning horn
  • Standard visibility mirror package
  • Ground-level secondary engine shutoff switch
  • Rearview camera and right-hand-side mirror

345 GC Optional Equipment

  • Cold start block heaters
  • -32° C (-25° F) cold start capability

  • Fine swing
  • Combined two-way auxiliary-circuit
  • Combined two-way auxiliary-circuit with hammer return filter

  • 600mm (24") double grouser track shoes
  • 600mm (24") HD triple grouser track shoes
  • 600mm (24") triple grouser track shoes
  • 700mm (28") triple grouser track shoes

  • 6.55 (21'6") Mass boom
  • 6.9m (22'8") Reach boom
  • 2.55 (8'4") Mass stick
  • 2.9m (9'6") Reach stick
  • 2.9m (9'6") HD Reach stick
  • 3.0m (9'10") Mass stick
  • 3.35m (11') Reach stick
  • 3.35m (11') HD Reach stick

  • Electric refueling pump with automatic shutoff