311F LRR 311F LRR
311F LRR 311F LRR
311F LRR 311F LRR
Cat® 311F L RR Small Excavator Delivers in Tight Spaces Cat® 311F L RR Small Excavator Delivers in Tight Spaces


Engine ModelCat® C3.4B
Flywheel Power70 HP (52 kW)
Bore3.9 in (99 mm)
Stroke4.33 in (110 mm)
If you want a machine with the power to match your jobs but owning and operating costs to fit your business, then the Cat® 311F L RR excavator is your answer. Its reduced radius will get you into some pretty tight spots, and its reasonable price and miserly fuel burn will help you operate on a tight budget.


Engine ModelCat® C3.4B
Flywheel Power70 HP (52 kW)
Bore3.9 in (99 mm)
Stroke4.33 in (110 mm)
Displacement207 in³ (3.4 l)
Gross Power - SAE J199574 HP (55 kW)
Net Power - SAE J134970 HP (52 kW)
Operating Weight28660 lb (13000 kg)
Note*4.3 m (14'1") reach boom, 2.8 m (9'2") stick, 700 mm (28") track shoes, without blade.
Operating Weight*28660 lb (13000 kg)
Swing Speed10 r/min (10 r/min)
Swing Torque22791 ft·lbf (30.9 kN·m)
Maximum Drawbar Pull25696 lb (114.3 kN)
Maximum Travel Speed - High3.4 mile/h (5.4 km/h)
Main System - Maximum Flow - Total125 × 2 L/min (33 × 2 gal/min)
Maximum Pressure - Equipment4424 psi (30.5 MPa)
Maximum Pressure - Swing3336 psi (23 MPa)
Maximum Pressure - Travel5076 psi (35 MPa)
Pilot System - Maximum Flow5.8 gal/min (21.9 l/min)
Pilot System - Maximum Pressure598 psi (4120 kPa)
Cooling System2.4 gal (US) (9 l)
Swing Drive - Each0.63 gal (US) (2.4 l)
Final Drive - Each0.79 gal (US) (3 l)
Hydraulic System - Including Tank42.3 gal (US) (160 l)
Hydraulic Tank25.1 gal (US) (95 l)
Engine Oil - With Filter2.1 gal (US) (8 l)
Fuel Tank Capacity55.48 gal (US) (210 l)
ISO 6395 - Spectator Noise99 dB(A) (99 dB(A))
ISO 6396 - Operator Noise (Closed)72 dB(A) (72 dB(A))
Cab Height9.08 ft (2760 mm)
Cab Height - With Top Guard9.5 ft (2920 mm)
Counterweight Clearance3 ft (915 mm)
Ground Clearance1.42 ft (440 mm)
Handrail Height9.25 ft (2820 mm)
Length - Center of Rollers9.08 ft (2780 mm)
Shipping Height9.25 ft (2820 mm)
Shipping Height - Top of Boom9.08 ft (2760 mm)
Shipping Length - Long Undercarriage22.67 ft (6920 mm)
Shipping Length - Long Undercarriage with Blade24.67 ft (7540 mm)
Tail Swing Radius5.75 ft (1750 mm)
Track Gauge6.5 ft (1990 mm)
Track Length11.42 ft (3490 mm)
Transport Width - 700 mm (28 in) Shoes8.75 ft (2690 mm)
Maximum Travel Speed - Low2.2 mile/h (3.6 km/h)
NoteThe air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.9 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes.
Boom Cylinder - Bore4 in (100 mm)
Boom Cylinder - Stroke39 in (1002 mm)
Bucket Cylinder - Bore4 in (100 mm)
Bucket Cylinder - Stroke37 in (939 mm)
Stick Cylinder - Bore4 in (110 mm)
Stick Cylinder - Stroke47 in (1194 mm)
Number of Carrier Rollers - Each Side1 piece
Number of Shoes - Each Side43 pieces
Number of Track Rollers - Each Side6 pieces
Maximum Cutting Height26.67 ft (8140 mm)
Maximum Depth Cut for 2440 mm (8'0") Level Bottom16.33 ft (4990 mm)
Maximum Digging Depth18.33 ft (5590 mm)
Maximum Loading Height18.92 ft (5770 mm)
Maximum Reach - Ground Level26.58 ft (8100 mm)
Maximum Vertical Wall Digging Depth16 ft (4880 mm)
Minimum Loading Height4.33 ft (1330 mm)

Benefits and Features

  • The C3.4B U.S. EPA Tier 4 Final/EU Stage IV engine burns up to 14% less fuel than the model it replaces, the 311D.
  • The engine is equipped to run on up to B20 biodiesel fuel.
  • Two power modes, high power and eco mode, help operators manage fuel consumption.
  • Auto engine idle shutdown saves fuel, reduces emissions, and extends service intervals.

  • Reduced radius is ideal for work in space-restricted areas.
  • Site prep and finishing work are quick and easy with a wide range of Cat work tools.
  • Utility work is fast and flawless with a Cat bucket and compactor.
  • A coupler lets you swap between attachments in seconds without leaving the cab.
  • See the whole money-making attachment line for your machine at www.cat.com/attachments.

  • The roll-over protective structure (ROPS) certified cab is quiet and comfortable.
  • Automatic climate control helps maintain consistent cab temperature.
  • Joystick consoles and armrests are adjustable.
  • Seats are adjustable and feature air suspension and heated and cooled options.
  • The LCD monitor is easy to navigate and programmable in 42 languages.

  • Booms and sticks are built with baffle plates for enhanced service life.
  • Box-section structures with multi-plate fabrications, castings, and forgings are used in high-stress areas.
  • Greased track link between pins and bushings increases undercarriage life and reduces noise.

  • Many routine service and maintenance points can be accessed from ground level reducing the time taken to check and service your machine.
  • Service doors are designed to prevent debris entry and to make access to fluid taps and filters easy.
  • The cooling package is designed to prevent plugging and has wide clearance to help make blowing off debris easy.

  • The side-view camera is offered to enhance visibility on the boom side of the machine to help make operators more effective and efficient.*
*Regulation requirement for Europe only.

  • Cat Connect technology improves job site efficiency.
  • Product Link™ system connects owners to their equipment, providing access to machine data such as location, hours, fuel consumption, idle time, events, and diagnostic codes.