311F L RR (2017)


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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 Model Cat® C3.4B Cat® C3.4B Less
Flywheel Power 70.0 HP 52.0 kW Less
Bore 3.9 in 99.0 mm Less
Stroke 4.33 in 110.0 mm Less
Displacement 207.0 in³ 3.4 l Less
Gross Power - SAE J1995 74.0 HP 55.0 kW Less
Net Power - SAE J1349 70.0 HP 52.0 kW Less
Note The 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. The 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. Less


Operating Weight 28660.0 lb 13000.0 kg Less

Machine Weight

Note *4.3 m (14'1") reach boom, 2.8 m (9'2") stick, 700 mm (28") track shoes, without blade. *4.3 m (14'1") reach boom, 2.8 m (9'2") stick, 700 mm (28") track shoes, without blade. Less
Operating Weight* 28660.0 lb 13000.0 kg Less


Swing Speed 10.0 r/min 10.0 r/min Less
Swing Torque 22791.0 ft·lbf 30.9 null Less


Maximum Drawbar Pull 25696.0 lb 114.3 kN Less
Maximum Travel Speed - High 3.4 mile/h 5.4 km/h Less
Maximum Travel Speed - Low 2.2 mile/h 3.6 km/h Less

Hydraulic System

Main System - Maximum Flow - Total 125 × 2 L/min (33 × 2 gal/min) 125 × 2 L/min (33 × 2 gal/min) Less
Maximum Pressure - Equipment 4424.0 psi 30.5 MPa Less
Maximum Pressure - Swing 3336.0 psi 23.0 MPa Less
Maximum Pressure - Travel 5076.0 psi 35.0 MPa Less
Pilot System - Maximum Flow 5.8 gal/min 21.9 l/min Less
Pilot System - Maximum Pressure 598.0 psi 4120.0 kPa Less
Boom Cylinder - Bore 4.0 in 100.0 mm Less
Boom Cylinder - Stroke 39.0 in 1002.0 mm Less
Bucket Cylinder - Bore 4.0 in 100.0 mm Less
Bucket Cylinder - Stroke 37.0 in 939.0 mm Less
Stick Cylinder - Bore 4.0 in 110.0 mm Less
Stick Cylinder - Stroke 47.0 in 1194.0 mm Less

Service Refill Capacities

Cooling System 2.4 gal (US) 9.0 l Less
Swing Drive - Each 0.63 gal (US) 2.4 l Less
Final Drive - Each 0.79 gal (US) 3.0 l Less
Hydraulic System - Including Tank 42.3 gal (US) 160.0 l Less
Hydraulic Tank 25.1 gal (US) 95.0 l Less
Engine Oil - With Filter 2.1 gal (US) 8.0 l Less
Fuel Tank Capacity 55.48 gal (US) 210.0 l Less


ISO 6395 - Spectator Noise 99.0 dB(A) 99.0 dB(A) Less
ISO 6396 - Operator Noise (Closed) 72.0 dB(A) 72.0 dB(A) Less

Dimensions - Reach Boom - 4.3 m (14'1"); R2.8 m (9'2") Stick

Cab Height 9.08 ft 2760.0 mm Less
Cab Height - With Top Guard 9.5 ft 2920.0 mm Less
Counterweight Clearance 3.0 ft 915.0 mm Less
Ground Clearance 1.42 ft 440.0 mm Less
Handrail Height 9.25 ft 2820.0 mm Less
Length - Center of Rollers 9.08 ft 2780.0 mm Less
Shipping Height 9.25 ft 2820.0 mm Less
Shipping Height - Top of Boom 9.08 ft 2760.0 mm Less
Shipping Length - Long Undercarriage 22.67 ft 6920.0 mm Less
Shipping Length - Long Undercarriage with Blade 24.67 ft 7540.0 mm Less
Tail Swing Radius 5.75 ft 1750.0 mm Less
Track Gauge 6.5 ft 1990.0 mm Less
Track Length 11.42 ft 3490.0 mm Less
Transport Width - 700 mm (28 in) Shoes 8.75 ft 2690.0 mm Less


Number of Carrier Rollers - Each Side 1 piece 1 piece Less
Number of Shoes - Each Side 43 pieces 43 pieces Less
Number of Track Rollers - Each Side 6 pieces 6 pieces Less

Working Ranges - Reach Boom - 4.3 m (14'1"); R2.8 m (9'2") Stick

Maximum Cutting Height 26.67 ft 8140.0 mm Less
Maximum Depth Cut for 2440 mm (8'0") Level Bottom 16.33 ft 4990.0 mm Less
Maximum Digging Depth 18.33 ft 5590.0 mm Less
Maximum Loading Height 18.92 ft 5770.0 mm Less
Maximum Reach - Ground Level 26.58 ft 8100.0 mm Less
Maximum Vertical Wall Digging Depth 16.0 ft 4880.0 mm Less
Minimum Loading Height 4.33 ft 1330.0 mm Less

Fuel Efficiency

  • 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


  • 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.

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