New | 309 CR VAB Mini Hydraulic Excavator

The Cat® 309 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.

Engine
Engine ModelCat C3.3B
Net Power70.3 HP
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/126971.5 HP
Gross Power - ISO 1439674.3 HP
Displacement203 in³
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/126970.3 HP
Stroke4.7 in
Bore3.7 in
Weights
Operating Weight20731 lb
Note (1)*Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Maximum Operating Weight with Cab*21054 lb
Maximum Operating Weight with Cab**20731 lb
Minimum Operating Weight with Cab*19304 lb
Note*Maximum Weight is based on steel tracks with rubber pads, 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.
Blade
Height17 in
Width - Wide103.9 in
Width - Standard97.2 in
Dimensions - VAB In
Cab Height99 in
Maximum Blade Depth26.9 in
Maximum Blade Height13.5 in
Stick Length71.8 in
Maximum Reach260.3 in
Tail Swing without Counterweight57.1 in
Vertical Wall133.6 in
Swing Bearing Height31.4 in
Track Belt/Shoe Width17.7 in
Boom Swing Right37 in
Overall Track Width97.2 in
Overall Shipping Length227.2 in
Maximum Dump Clearance143.4 in
Boom in Reach112.3 in
Maximum Reach at Ground Level252.1 in
Transport Height99.6 in
Overall Undercarriage Length126 in
Ground Clearance13.5 in
Tail Swing with Counterweight64.8 in
Maximum Dig Height216.3 in
Boom Swing Left24 in
Dig Depth154.8 in
Hydraulic System
Operating Pressure - Travel4134 psi
Auxiliary Circuit - Secondary - Flow9 gal/min
Auxiliary Circuit - Primary (High Flow) - Pressure4134 psi
TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard9500 lb
Auxiliary Circuit - Secondary - Pressure4134 psi
Digging Force - Stick - Long8023 lb
Digging Force - Bucket13943 lb
Pump Flow at 2,400 rpm62 gal/min
Auxiliary Circuit - Primary (High Flow) - Flow37 gal/min
Operating Pressure - Swing3626 psi
Operating Pressure - Equipment4134 psi
Dimensions - Long Stick
Boom Swing - Right37 in
Boom Swing - Left24 in
Dig Depth183.1 in
Stick Length92.8 in
Maximum Reach - Ground Level293.8 in
Maximum Blade Height13.5 in
Cab Height99 in
Transport Height99 in
Boom In Reach126.6 in
O/A Track Width97.2 in
Ground Clearance13.5 in
Swing Bearing - Height28.7 in
Tail Swing without Counterweight57.1 in
Tail Swing with Counterweight64.8 in
Maximum Reach300.7 in
Track Belt/Shoe Width17.7 in
Vertical Wall134.3 in
O/A Undercarriage Length126 in
O/A Shipping Length262.3 in
Maximum Dig Height276.8 in
Maximum Dump Clearance199.4 in
Maximum Blade Depth26.9 in
Dimensions - VAB Out
Ground Clearance13.5 in
Cab Height99 in
Boom in Reach117.9 in
Vertical Wall138.7 in
Swing Bearing Height31.4 in
Maximum Dump Clearance251.6 in
Overall Undercarriage Length126 in
Maximum Reach at Ground Level304.4 in
Tail Swing without Counterweight57.1 in
Maximum Reach311 in
Track Belt/Shoe Width17.7 in
Overall Shipping Length281.8 in
Maximum Blade Depth26.9 in
Maximum Dig Height321.7 in
Overall Track Width97.2 in
Tail Swing with Counterweight64.8 in
Stick Length71.8 in
Maximum Blade Height13.5 in
Boom Swing Right37 in
Boom Swing Left24 in
Transport Height96.5 in
Dig Depth136.5 in
Dimensions - Standard Stick
Maximum Reach - Ground Level273.6 in
Swing Bearing - Height28.7 in
Stick Length71.8 in
O/A Shipping Length259 in
Maximum Blade Height13.5 in
Boom In Reach120.4 in
Tail Swing with Counterweight64.8 in
Vertical Wall118 in
Maximum Blade Depth26.9 in
Ground Clearance13.5 in
Maximum Reach281.1 in
Transport Height97.9 in
Cab Height99 in
Boom Swing - Left24 in
O/A Track Width97.2 in
Boom Swing - Right37 in
Maximum Dig Height264.9 in
Tail Swing without Counterweight57.1 in
Dig Depth162 in
Maximum Dump Clearance187.1 in
Track Belt/Shoe Width17.7 in
O/A Undercarriage Length126 in
Travel System
Ground Pressure - Minimum Weight6 psi
Travel Speed - High3.1 mile/h
Maximum Traction Force - High Speed6497 lb
Travel Speed - Low1.6 mile/h
Ground Pressure - Maximum Weight6 psi
Maximum Traction Force - Low Speed19064 lb
Gradeability - Maximum30 degrees
Service Refill Capacities
Fuel Tank39 gal (US)
Hydraulic System28 gal (US)
Engine Oil3 gal (US)
Cooling System2.6 gal (US)
Hydraulic Tank14 gal (US)
Swing System
Machine Swing Speed10.6 r/min
Weight Increase from Minimum Configuration
Steel Tracks with Pads728 lb
Long Stick146 lb
Counterweight552 lb
Specifications
NoteThe 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.
Certification - Cab
Top GuardISO 10262:1998 (Level II)
Roll Over Protective Structure (ROPS)ISO 12117-2:2008
Tip Over Protective Structure (TOPS)ISO 12117:1997
Sound
Average Exterior Sound Pressure (ISO 6395:2008)99 dB(A)
Operator Sound Pressure (ISO 6396:2008)72 dB(A)
NoteEuropean Union Directive “2000/14/EC”
Air Conditioning System
Air ConditioningThe 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.

        
  • 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.

  • controls Are Easy To Use And The Intuitive Next Generation Monitor Provides Customizable Machine Operator Preferences And Easy To Read Machine Information.

  • 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!

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

Standard Equipment

ENGINE
  • Extended Life Coolant, –37° C (–35° F)
  • Ecology Drain
  • Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
  • Automatic Two Speed Travel
  • Automatic Engine Shutdown
  • Radial Seal – Double Element Air Filter
  • Automatic Swing Brake
  • Automatic Engine Idle
  • Fuel Water Separator with Indicator
HYDRAULICS
  • Case Drain Line
  • Hydraulic Temperature Monitoring
  • Hydro Advanced Hydraulic Oil
  • Certified Accumulator
  • Power On Demand
  • Variable Displacement Piston Pump
  • Load Sensing/Flow Sharing Hydraulics
  • Smart Tech Electronic Pump
OPERATOR ENVIRONMENT
  • Rear Window Emergency Exit
  • Assisted Front Window Overhead Storage
  • 12V Power Socket
  • Travel Pedals and Hand Levers
  • Travel Cruise Control
  • LED Interior Light
  • Coat Hook
  • Cat Key with Passcode Option
  • Fabric, High Back, Suspension Seat
  • Stick Steer Mode
  • ROPS – ISO 12117-2:2008
  • Removable, Washable Floor Mat
  • Literature Holder
  • 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
  • Mounting Bosses for Top and Front Guards
  • Sealed and Pressurized Cab
  • Radio – Bluetooth®, USB, Auxiliary, Microphone
  • Skylight
  • Integrated Lower Front Window
  • HVAC with Automatic Temperature Control
  • Retractable Seat Belt (75 mm/3 in)
  • TOPS – ISO 12117:1997
  • Top Guard – ISO 10262:1998 (Level II)
  • Cup Holder
  • Hydraulic Lockout Controls
  • Control Pattern Changer
  • Operator Sound Pressure 72 dB(A) ISO 6396:2008
  • Molded Footrests
  • Adjustable Wrist Rests
UNDERCARRIAGE
  • Tie Down Eyes on Track Frame
  • Dozer Blade
  • Dozer Float
  • Bolt-on, Reversible Wear Edge
  • Steel Tracks (450 mm/17.7 in wide)
  • Hydraulic Track Adjusters
  • Greased and Lubricated Track
BOOM, STICK AND LINKAGES
  • Variable Angle Boom
  • Standard Stick (1823 mm/71.8 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)

Optional Equipment

OPERATOR ENVIRONMENT
  • Air Suspension Heated Seat
  • Rain Visor
ELECTRICAL
  • Rearview Camera
  • Rotating Beacon
OTHER
  • Boom and Stick Hose Burst Check Valves
  • Bucket Linkage with Lift Eye
  • Track Guides
  • Attachments including Buckets, Augers and Hammers
  • Wide Steel Tracks (600 mm/23.6 in)
  • 2nd Auxiliary Hydraulic Lines
  • Wide Dozer Blade
  • Additional Counterweight
  • Water Jacket Heater
  • Refueling Pump
  • Cab Guarding
  • Travel Alarm (standard in some regions)

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