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309 CR

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309 CR Mini Hydraulic Excavator
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Overview

The Cat® 309 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

Engine

  • Engine Model Cat C3.3B Cat C3.3B
  • Net Power 70.3 HP 52.4 kW
  • Bore 3.7 in 94.0 mm
  • Displacement 203.0 in³ 3.33 l
  • Gross Power - ISO 14396 74.3 HP 55.4 kW
  • Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269 71.5 HP 53.3 kW
  • Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269 70.3 HP 52.4 kW
  • Stroke 4.7 in 120.0 mm

Weights

  • Operating Weight 20731.0 lb 9403.0 kg
  • Maximum Operating Weight with Cab** 20731.0 lb 9403.0 kg
  • Minimum Operating Weight with Cab* 19304.0 lb 8756.0 kg
  • Note (1) *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket. *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
  • Note (2) **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket. **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.

Blade

  • Height 17.0 in 431.0 mm
  • Width - Standard 97.2 in 2470.0 mm
  • Width - Wide 103.9 in 2640.0 mm

Air Conditioning System

  • Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes. The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.

Certification - Cab

  • Roll Over Protective Structure (ROPS) ISO 12117-2:2008 ISO 12117-2:2008
  • Tip Over Protective Structure (TOPS) ISO 12117:1997 ISO 12117:1997
  • Top Guard ISO 10262:1998 (Level II) ISO 10262:1998 (Level II)

Dimensions - Long Stick

  • Boom In Reach 126.6 in 3215.0 mm
  • Boom Swing - Left 24.0 in 604.0 mm
  • Boom Swing - Right 37.0 in 935.0 mm
  • Cab Height 99.0 in 2514.0 mm
  • Dig Depth 183.1 in 4650.0 mm
  • Ground Clearance 13.5 in 343.0 mm
  • Maximum Blade Depth 26.9 in 684.0 mm
  • Maximum Blade Height 13.5 in 342.0 mm
  • Maximum Dig Height 276.8 in 7032.0 mm
  • Maximum Dump Clearance 199.4 in 5065.0 mm
  • Maximum Reach 300.7 in 7637.0 mm
  • Maximum Reach - Ground Level 293.8 in 7462.0 mm
  • O/A Shipping Length 262.3 in 6662.0 mm
  • O/A Track Width 97.2 in 2470.0 mm
  • O/A Undercarriage Length 126.0 in 3200.0 mm
  • Stick Length 92.8 in 2358.0 mm
  • Swing Bearing - Height 28.7 in 729.0 mm
  • Tail Swing with Counterweight 64.8 in 1645.0 mm
  • Tail Swing without Counterweight 57.1 in 1450.0 mm
  • Track Belt/Shoe Width 17.7 in 450.0 mm
  • Transport Height 99.0 in 2514.0 mm
  • Vertical Wall 134.3 in 3411.0 mm

Dimensions - Standard Stick

  • Boom In Reach 120.4 in 3058.0 mm
  • Boom Swing - Left 24.0 in 604.0 mm
  • Boom Swing - Right 37.0 in 935.0 mm
  • Cab Height 99.0 in 2514.0 mm
  • Dig Depth 162.0 in 4115.0 mm
  • Ground Clearance 13.5 in 343.0 mm
  • Maximum Blade Depth 26.9 in 684.0 mm
  • Maximum Blade Height 13.5 in 342.0 mm
  • Maximum Dig Height 264.9 in 6729.0 mm
  • Maximum Dump Clearance 187.1 in 4753.0 mm
  • Maximum Reach 281.1 in 7140.0 mm
  • Maximum Reach - Ground Level 273.6 in 6951.0 mm
  • O/A Shipping Length 259.0 in 6578.0 mm
  • O/A Track Width 97.2 in 2470.0 mm
  • O/A Undercarriage Length 126.0 in 3200.0 mm
  • Stick Length 71.8 in 1823.0 mm
  • Swing Bearing - Height 28.7 in 729.0 mm
  • Tail Swing with Counterweight 64.8 in 1645.0 mm
  • Tail Swing without Counterweight 57.1 in 1450.0 mm
  • Track Belt/Shoe Width 17.7 in 450.0 mm
  • Transport Height 97.9 in 2487.0 mm
  • Vertical Wall 118.0 in 2998.0 mm

Hydraulic System

  • Auxiliary Circuit - Primary (High Flow) - Flow 37.0 gal/min 140.0 l/min
  • Auxiliary Circuit - Primary (High Flow) - Pressure 4134.0 psi 285.0 bar
  • Auxiliary Circuit - Secondary - Flow 9.0 gal/min 33.0 l/min
  • Auxiliary Circuit - Secondary - Pressure 4134.0 psi 285.0 bar
  • Digging Force - Bucket 13943.0 lb 62.0 kN
  • Digging Force - Stick - Long 8023.0 lb 35.7 kN
  • Digging Force - Stick - Standard 9500.0 lb 42.3 kN
  • Operating Pressure - Equipment 4134.0 psi 285.0 bar
  • Operating Pressure - Swing 3626.0 psi 250.0 bar
  • Operating Pressure - Travel 4134.0 psi 285.0 bar
  • Pump Flow at 2,400 rpm 62.0 gal/min 233.0 l/min
  • Type Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump

Service Refill Capacities

  • Cooling System 2.6 gal (US) 10.0 l
  • Engine Oil 3.0 gal (US) 11.2 l
  • Fuel Tank 39.0 gal (US) 147.0 l
  • Hydraulic System 28.0 gal (US) 107.0 l
  • Hydraulic Tank 14.0 gal (US) 53.0 l

Sound

  • Average Exterior Sound Pressure (ISO 6395:2008) 99.0 dB(A) 99.0 dB(A)
  • Note European Union Directive “2000/14/EC” European Union Directive “2000/14/EC”
  • Operator Sound Pressure (ISO 6396:2008) 72.0 dB(A) 72.0 dB(A)

Specifications

  • Note The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage. For specifications representing a 309 CR with a Standard Undercarriage, please refer to the 308 CR information. The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage. For specifications representing a 309 CR with a Standard Undercarriage, please refer to the 308 CR information.

Swing System

  • Machine Swing Speed 10.6 r/min 10.6 r/min

Travel System

  • Gradeability - Maximum 30 degrees 30 degrees
  • Ground Pressure - Maximum Weight 6.0 psi 40.8 kPa
  • Ground Pressure - Minimum Weight 6.0 psi 38.0 kPa
  • Maximum Traction Force - High Speed 6497.0 lb 28.9 kN
  • Maximum Traction Force - Low Speed 19064.0 lb 84.8 kN
  • Travel Speed - High 3.1 mile/h 4.9 km/h
  • Travel Speed - Low 1.6 mile/h 2.6 km/h

Weight Increase from Minimum Configuration

  • Counterweight 552.0 lb 250.0 kg
  • Long Stick 146.0 lb 66.0 kg
  • Steel Tracks with Pads 728.0 lb 330.0 kg

ALL DAY COMFORT

  • A sealed and pressurized cab is equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.

EASY TO OPERATE

  • Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.

STICK STEER TRAVEL MODE

  • Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button. The benefit of less effort and improved control is in your hands!

BIG PERFORMANCE IN A MINI DESIGN

  • Increased lifting, swinging, travel and multi-functioning performance helps you get the job done more efficiently, and dig-to-blade allows for easy clean up.

SAFETY ON THE JOB SITE

  • Your safety is our top priority. The Cat Mini Excavator is designed to help keep you safe on the job. A back-up camera, courtesy work lights and a fluorescent retractable seat belt are just a few of the safety features we’ve built into the machine.

SIMPLE SERVICE FOR LESS DOWNTIME

  • Maintenance is quick and easy on the Cat Mini Excavator. Routine check points are easy to access at ground level with grouped service points and robust service panels.

LOWER OPERATING COSTS

  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat Mini Excavator was designed with reducing your operating costs in mind.

UNMATCHED DEALER SUPPORT

  • Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.

309 CR Standard Equipment

ENGINE

  • Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/ EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
  • Automatic Engine Idle
  • Automatic Engine Shutdown
  • Automatic Swing Brake
  • Automatic Two Speed Travel
  • Fuel Water Separator with Indicator
  • Radial Seal – Double Element Air Filter
  • Extended Life Coolant, –37° C (–35° F)
  • Ecology Drain

HYDRAULICS

  • Smart Tech Electronic Pump
  • Variable Displacement Piston Pump
  • Load Sensing/Flow Sharing Hydraulics
  • Power On Demand
  • Hydraulic Temperature Monitoring
  • Certified Accumulator
  • Hydro Advanced Hydraulic Oil

OPERATOR ENVIRONMENT

  • Sealed and Pressurized Cab
  • Operator Sound Pressure 72 dB(A) ISO 6396:2008
  • Stick Steer Mode
  • Travel Cruise Control
  • Control Pattern Changer
  • Adjustable Wrist Rests
  • Molded Footrests
  • Removable, Washable Floor Mat
  • Travel Pedals and Hand Levers
  • Cat Key with Passcode Option
  • HVAC with Automatic Temperature Control
  • Hydraulic Lockout Controls
  • Integrated Lower Front Window
  • Assisted Front Window Overhead Storage
  • Rear Window Emergency Exit
  • Fabric, High Back, Suspension Seat
  • Retractable Seat Belt (75 mm/3 in)
  • Coat Hook
  • Cup Holder
  • LED Interior Light
  • Literature Holder
  • 12V Power Socket
  • Radio – Bluetooth®, USB, Auxiliary, Microphone
  • Skylight
  • Mounting Bosses for Top and Front Guards
  • ROPS – ISO 12117-2:2008
  • TOPS – ISO 12117:1997
  • Top Guard – ISO 10262:1998 (Level II)
  • Color LCD Monitor
    – Fuel Level and Coolant Temperature Gauges
    – Maintenance and Machine Monitoring
    – Performance and Machine Adjustments
    – Numeric Security Code
    – Multiple Languages
    – Camera Ready
    – Hour Meter with Wake Up Switch
    – Jog Dial Control Interface

UNDERCARRIAGE

  • Greased and Lubricated Track
  • Hydraulic Track Adjusters
  • Tie Down Eyes on Track Frame
  • Dozer Blade
  • Dozer Float
  • Bolt-on, Reversible Wear Edge
  • Steel Tracks (450 mm/17.7 in wide)

BOOM, STICK AND LINKAGES

  • One Piece Boom (3400 mm/133.9 in)
  • Standard Stick (1820 mm/71.7 in)
  • Long Stick (2360 mm/92.9 in)
  • Front Shovel Capable (Pin-On/Manual Coupler/Hydraulic Coupler – not available in all regions)
  • Thumb Ready (not available in all regions)
  • Certified Lifting Eye (not available in all regions)

ELECTRICAL

  • 12 Volt Electrical System
  • 90 Ampere Alternator
  • 850 CCA Maintenance Free Battery
  • Circuit Breaker
  • Ignition Key Stop Switch
  • Signaling/Warning Horn
  • Product Link™ Elite Lite (regulations apply)
  • Travel Alarm

309 CR Optional Equipment

OPERATOR ENVIRONMENT

  • Rain Visor
  • Air Suspension Heated Seat

ELECTRICAL

  • Rearview Camera
  • Rotating Beacon

OTHER

  • Attachments including Buckets, Augers and Hammers
  • Wide Steel Tracks (600 mm/23.6 in)
  • Wide Dozer Blade
  • 2nd Auxiliary Hydraulic Lines
  • Additional Counterweight
  • Boom and Stick Hose Burst Check Valves
  • Bucket Linkage with Lift Eye
  • Track Guides
  • Water Jacket Heater
  • Refueling Pump
  • Variable Angle Boom (please see 309 CR VAB brochure for VAB specs and additional information)
  • Cab Guarding

Attachments

Augers

Digging Buckets - Mini Excavator

Ditch Cleaning Buckets - Mini Excavator

Grading Buckets - Mini Excavator

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