New CAT Equipment

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.

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    Learn more about the 309 CR VAB Mini Hydraulic Excavator

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    Product Specs

    Engine

    Net Power 70.3 HP
    Engine Model Cat C3.3B
    Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269 71.5 HP
    Gross Power - ISO 14396 74.3 HP
    Displacement 203 in³
    Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269 70.3 HP
    Stroke 4.7 in
    Bore 3.7 in

    Weights

    Operating Weight 20731 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.

    Dimensions - VAB In

    Dig Depth 154.8 in
    Cab Height 99 in
    Maximum Blade Depth 26.9 in
    Maximum Blade Height 13.5 in
    Stick Length 71.8 in
    Maximum Reach 260.3 in
    Tail Swing without Counterweight 57.1 in
    Vertical Wall 133.6 in
    Swing Bearing Height 31.4 in
    Track Belt/Shoe Width 17.7 in
    Boom Swing Right 37 in
    Overall Track Width 97.2 in
    Overall Shipping Length 227.2 in
    Maximum Dump Clearance 143.4 in
    Boom in Reach 112.3 in
    Maximum Reach at Ground Level 252.1 in
    Transport Height 99.6 in
    Overall Undercarriage Length 126 in
    Ground Clearance 13.5 in
    Tail Swing with Counterweight 64.8 in
    Maximum Dig Height 216.3 in
    Boom Swing Left 24 in

    Blade

    Height 17 in
    Width - Wide 103.9 in
    Width - Standard 97.2 in

    Hydraulic System

    Operating Pressure - Travel 4134 psi
    Auxiliary Circuit - Secondary - Flow 9 gal/min
    Auxiliary Circuit - Primary (High Flow) - Pressure 4134 psi
    Type Load Sensing Hydraulics with Variable Displacement Piston Pump
    Digging Force - Stick - Standard 9500 lb
    Auxiliary Circuit - Secondary - Pressure 4134 psi
    Digging Force - Stick - Long 8023 lb
    Digging Force - Bucket 13943 lb
    Pump Flow at 2,400 rpm 62 gal/min
    Auxiliary Circuit - Primary (High Flow) - Flow 37 gal/min
    Operating Pressure - Swing 3626 psi
    Operating Pressure - Equipment 4134 psi

    Dimensions - Long Stick

    Boom Swing - Right 37 in
    Boom Swing - Left 24 in
    Dig Depth 183.1 in
    Stick Length 92.8 in
    Maximum Reach - Ground Level 293.8 in
    Maximum Blade Height 13.5 in
    Cab Height 99 in
    Transport Height 99 in
    Boom In Reach 126.6 in
    O/A Track Width 97.2 in
    Ground Clearance 13.5 in
    Swing Bearing - Height 28.7 in
    Tail Swing without Counterweight 57.1 in
    Tail Swing with Counterweight 64.8 in
    Maximum Reach 300.7 in
    Track Belt/Shoe Width 17.7 in
    Vertical Wall 134.3 in
    O/A Undercarriage Length 126 in
    O/A Shipping Length 262.3 in
    Maximum Dig Height 276.8 in
    Maximum Dump Clearance 199.4 in
    Maximum Blade Depth 26.9 in

    Dimensions - VAB Out

    Ground Clearance 13.5 in
    Cab Height 99 in
    Boom in Reach 117.9 in
    Vertical Wall 138.7 in
    Swing Bearing Height 31.4 in
    Maximum Dump Clearance 251.6 in
    Overall Undercarriage Length 126 in
    Maximum Reach at Ground Level 304.4 in
    Tail Swing without Counterweight 57.1 in
    Maximum Reach 311 in
    Track Belt/Shoe Width 17.7 in
    Overall Shipping Length 281.8 in
    Maximum Blade Depth 26.9 in
    Maximum Dig Height 321.7 in
    Overall Track Width 97.2 in
    Tail Swing with Counterweight 64.8 in
    Stick Length 71.8 in
    Maximum Blade Height 13.5 in
    Boom Swing Right 37 in
    Boom Swing Left 24 in
    Transport Height 96.5 in
    Dig Depth 136.5 in

    Dimensions - Standard Stick

    Maximum Reach - Ground Level 273.6 in
    Swing Bearing - Height 28.7 in
    Stick Length 71.8 in
    O/A Shipping Length 259 in
    Maximum Blade Height 13.5 in
    Boom In Reach 120.4 in
    Tail Swing with Counterweight 64.8 in
    Vertical Wall 118 in
    Maximum Blade Depth 26.9 in
    Ground Clearance 13.5 in
    Maximum Reach 281.1 in
    Transport Height 97.9 in
    Cab Height 99 in
    Boom Swing - Left 24 in
    O/A Track Width 97.2 in
    Boom Swing - Right 37 in
    Maximum Dig Height 264.9 in
    Tail Swing without Counterweight 57.1 in
    Dig Depth 162 in
    Maximum Dump Clearance 187.1 in
    Track Belt/Shoe Width 17.7 in
    O/A Undercarriage Length 126 in

    Travel System

    Ground Pressure - Minimum Weight 6 psi
    Travel Speed - High 3.1 mile/h
    Maximum Traction Force - High Speed 6497 lb
    Travel Speed - Low 1.6 mile/h
    Ground Pressure - Maximum Weight 6 psi
    Maximum Traction Force - Low Speed 19064 lb
    Gradeability - Maximum 30 degrees

    Service Refill Capacities

    Fuel Tank 39 gal (US)
    Hydraulic System 28 gal (US)
    Engine Oil 3 gal (US)
    Cooling System 2.6 gal (US)
    Hydraulic Tank 14 gal (US)

    Swing System

    Machine Swing Speed 10.6 r/min

    Weight Increase from Minimum Configuration

    Steel Tracks with Pads 728 lb
    Long Stick 146 lb
    Counterweight 552 lb

    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.

    Certification - Cab

    Top Guard ISO 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)
    Note European Union Directive “2000/14/EC”

    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.