309 CR

Operating Weight
21091 lb / 9565 kg
Dig Depth
182.8 in / 4642 mm
Height
17 in / 431 mm

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.The 309 CR also features high flow hydraulics to handle power hungry attachments such as mulchers and brushcutters.

Specifications
Note The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage.
Weights
Operating Weight 21091 lb / 9565 kg
Maximum Operating Weight with Cab** 21091 lb / 9565 kg
Note (1) *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.
Minimum Operating Weight with Cab* 19735 lb / 8950 kg
Engine
Displacement 203 in³ / 3.33 l
Bore 3.7 in / 94 mm
Stroke 4.7 in / 120 mm
Gross Power - SAE J1995 74.3 HP / 55.4 kW
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 69.5 HP / 51.8 kW
Engine Model Cat C3.3B
Dimensions - Long Stick
Dig Depth 182.8 in / 4642 mm
Maximum Dump Clearance 199.7 in / 5072 mm
Boom In Reach 126.6 in / 3215 mm
Vertical Wall 134 in / 3404 mm
Maximum Blade Depth 26 in / 671 mm
O/A Undercarriage Length 126 in / 3200 mm
O/A Track Width 97.2 in / 2470 mm
Stick Length 92.8 in / 2358 mm
Maximum Blade Height 16.1 in / 408 mm
Maximum Dig Height 277.1 in / 7039 mm
Tail Swing with Counterweight 62.4 in / 1585 mm
Maximum Reach 300.7 in / 7637 mm
Cab Height 100 in / 2541 mm
Ground Clearance 14 in / 356 mm
Swing Bearing - Height 29.7 in / 756 mm
Track Belt/Shoe Width 17.7 in / 450 mm
Boom Swing - Left 23.8 in / 604 mm
Boom Swing - Right 36.8 in / 935 mm
Tail Swing without Counterweight 57.1 in / 1450 mm
Maximum Reach - Ground Level 293.7 in / 7460 mm
Note *Boom Height when stick is pinned in transport position with no attachments.
Note (2) ***With blade positioned at the rear of the machine.
Note (1) **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Height - Boom Transport - No Tools* 89 in / 2260 mm
Overall Shipping Length - with Counterweight 7052 mm (277.6 in)***
Height - Boom Working - With Tools** 120.1 in / 3050 mm
Overall Shipping Length - without Counterweight 7052 mm (277.6 in)***
Weight Increase from Minimum Configuration
Steel Tracks with Pads 728 lb / 330 kg
Long Stick 146 lb / 66 kg
Counterweight 552 lb / 250 kg
Travel System
Gradeability - Maximum 30 degrees
Ground Pressure - Minimum Weight 5 psi / 34.7 kPa
Ground Pressure - Maximum Weight 5.4 psi / 37.1 kPa
Travel Speed - High 3.1 mile/h / 4.9 km/h
Travel Speed - Low 1.6 mile/h / 2.6 km/h
Maximum Traction Force - High Speed 6497 lb / 28.9 kN
Maximum Traction Force - Low Speed 19064 lb / 84.8 kN
Service Refill Capacities
Engine Oil 3 gal (US) / 11.2 l
Fuel Tank 39 gal (US) / 147 l
Hydraulic System 29 gal (US) / 110 l
Cooling System 2.6 gal (US) / 10 l
Hydraulic Tank 14 gal (US) / 53 l
Hydraulic System
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing 3626 psi / 250 bar
Digging Force - Stick - Standard 9500 lb / 42.3 kN
Digging Force - Stick - Long 8023 lb / 35.7 kN
Operating Pressure - Travel 4134 psi / 285 bar
Pump Flow at 2,400 rpm 62 gal/min / 233 l/min
Digging Force - Bucket 13943 lb / 62 kN
Operating Pressure - Equipment 4134 psi / 285 bar
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Secondary - Flow at Pump 9 gal/min / 33 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump 4134 psi / 285 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump 35 gal/min / 131 l/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 4134 psi / 285 bar
Maximum Auxiliary Circuit - High Flow - Pressure at Pump 4134 lbf/in / 285 bar
Maximum Auxiliary Circuit - High Flow - Flow at Pump 37 gal/min / 140 l/min
Swing System
Machine Swing Speed 10.6 r/min
Boom Swing - Right 50 degrees
Boom Swing - Left 60 degrees
Blade
Height 17 in / 431 mm
Width - Wide 104 in / 2640 mm
Width - Standard 97 in / 2470 mm
Certification - Cab
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Top Guard ISO 10262:1998 (Level I)
Tip Over Protective Structure (TOPS) ISO 12117:1997
Sound
Average Exterior Sound Pressure (ISO 6395:2008) 99 dB(A)
Note European Union Directive "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008) 72 dB(A)
Dimensions - Standard Stick
Boom Swing - Right 36.8 in / 935 mm
Maximum Dump Clearance 187.4 in / 4760 mm
Tail Swing without Counterweight 57.1 in / 1450 mm
Maximum Reach - Ground Level 273.6 in / 6949 mm
O/A Undercarriage Length 126 in / 3200 mm
Cab Height 100 in / 2541 mm
Swing Bearing - Height 29.7 in / 756 mm
Maximum Dig Height 265.2 in / 6736 mm
Track Belt/Shoe Width 17.7 in / 450 mm
O/A Track Width 97.2 in / 2470 mm
Ground Clearance 14 in / 356 mm
Maximum Reach 281.1 in / 7141 mm
Tail Swing with Counterweight 62.4 in / 1585 mm
Boom In Reach 120.4 in / 3059 mm
Vertical Wall 117.8 in / 2991 mm
Dig Depth 161.7 in / 4108 mm
Stick Length 71.8 in / 1820 mm
Boom Swing - Left 23.8 in / 604 mm
Maximum Blade Height 16.1 in / 408 mm
Maximum Blade Depth 26 in / 671 mm
Note *Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - without Counterweight 266.7 in / 6774 mm
Overall Shipping Length - with Counterweight 266.7 in / 6774 mm
Note (2) ***With blade positioned at the rear of the machine.
Note (1) **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Height - Boom Transport - No Tools* 95.7 in / 2430 mm
Height - Boom Working - With Tools** 104.7 in / 2660 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.
Sustainability
Recyclability 96%

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)
  • HYDRAULICS
    • Electronic Variable Displacement Piston Pump
    • Load Sensing/Flow Sharing Hydraulics
    • Dedicated Auxiliary Hydraulic Pump
    • Power On Demand
    • Hydraulic Temperature Monitoring
    • Certified Accumulator
    • HYDO Advanced Hydraulic Oil
    • Ecology Drain
  • OPERATOR ENVIRONMENT
    • Top Guard ISO 10262 1998 Level I
    • ROPS ISO 12117-2:2008
    • 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
    • Mounting Bosses for Top and Front Guards
    • 12V Power Socket
    • Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
    • Skylight
    • Signaling/Warning Horn
    • Cab and (left side) Boom Work Lights
    • Utility Space for Mobile Phone
    • Next Generation Color LCD Monitor (IP66)
      – Jog Dial Interface
      – Fuel Level and Coolant Temperature Gauges
      – Maintenance and Machine Monitoring
      – Performance and Machine Adjustments
      – Numeric Security Code
      – Multiple Languages
      – Camera Ready (IP68 & IP69K)
      – Hour Meter with Wake Up Switch
  • UNDERCARRIAGE
    • Greased and Lubricated Track
    • Tie Down Eyes on Track Frame
    • Dozer Blade
    • Dozer Float
    • Bolt-on, Reversible Wear Edge
  • BOOM, STICK AND LINKAGES
    • One Piece Boom (3400 mm/133.9 in)
    • Standard Stick (1820 mm/71.7 in)
    • Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler (not available in all regions)
    • Thumb Ready (not available in all regions)
  • ELECTRICAL
    • 12 Volt Electrical System
    • 60 Ampere Alternator
    • Circuit Breaker
    • 900 CCA Maintenance Free Battery
    • Battery Disconnect
    • Ignition Key Stop Switch
    • Travel Alarm
  • OTHER
    • Locks on External Enclosure Doors
    • Lockable Fuel Cap
    • Beacon Socket
    • Rear Reflectors

Optional Equipment

  • OPERATOR ENVIRONMENT
    • Push to Start with Bluetooth® Key
    • Air Suspension Heated Seat
    • Rain Visor
    • Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)
      – Touch Screen
      – Site Reference System
      – High Definition Camera Capable (IP68 & IP69K)
      – Numeric Security Code
  • UNDERCARRIAGE
    • Wide Dozer Blade
    • Steel Tracks (450 mm/17.7 in wide)
    • Wide Steel Tracks (600 mm/23.6 in)
    • Steel Track with Rubber Pads
    • Track Guides
  • BOOM, STICK AND LINKAGES
    • Long Stick (2360 mm/92.9 in)
    • Attachments including Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines with Case Drain
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Certified Lifting Eye
  • ELECTRICAL
    • Product Link™ Elite (regulations apply)
    • Rearview Camera
    • Rotating Beacon
  • GUARDING
    • Mesh Front Guard ISO 10262 1998 Level I
    • Heavy Duty Front Guard ISO 10262 1998 Level II
    • Top Guard ISO 10262 1998 Level II
    • Polycarbonate Front Window EN356 P5A (Cab Only)
    • Track Guards
  • OTHER
    • Additional Counterweight
    • Water Jacket Heater
    • Refueling Pump
    • Variable Angle Boom (refer to 309 CR VAB brochure for VAB specs and additional information)
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