309 CR

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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

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

Weights

Operating Weight 20731.0 lb 9403.0 kg Less
Maximum Operating Weight with Cab** 20731.0 lb 9403.0 kg Less
Minimum Operating Weight with Cab* 19304.0 lb 8756.0 kg Less
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. Less
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. Less

Blade

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

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. Less

Certification - Cab

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

Dimensions - Long Stick

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

Dimensions - Standard Stick

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

Hydraulic System

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

Service Refill Capacities

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

Sound

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

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. Less

Swing System

Machine Swing Speed 10.6 r/min 10.6 r/min Less

Travel System

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

Weight Increase from Minimum Configuration

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

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