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

    Specifications

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

    Engine

    Net Power 69.5 HP
    Displacement 203 in³
    Stroke 4.7 in
    Bore 3.7 in
    Gross Power - SAE J1995 74.3 HP
    Note Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
    Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC 69.5 HP
    Engine Model - U.S. EPA Tier 4 Final/EU Stage V Cat C3.3B

    Weights

    Operating Weight 21477 lb
    Note (1) *Minimum Weight is based on rubber 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, standard stick, blade and no bucket.
    Minimum Operating Weight* 20121 lb
    Maximum Operating Weight* 21477 lb

    Weight Increase from Minimum Configuration

    Steel Tracks with Pads 728 lb
    Counterweight 552 lb
    Standard Stick 77 lb

    Travel System

    Ground Pressure - Minimum Weight 5.1 psi
    Travel Speed - High 3.1 mile/h
    Maximum Traction Force - High Speed 6497 lbf
    Travel Speed - Low 1.6 mile/h
    Ground Pressure - Maximum Weight 5.5 psi
    Maximum Traction Force - Low Speed 19064 lbf
    Gradeability - Maximum 30 degrees

    Service Refill Capacities

    Fuel Tank 39 gal (US)
    Hydraulic System 29 gal (US)
    Engine Oil 3 gal (US)
    Cooling System 2.6 gal (US)
    Hydraulic Tank 14 gal (US)

    Hydraulic System

    Operating Pressure - Travel 4134 psi
    Type Load Sensing Hydraulics with Variable Displacement Piston Pump
    Digging Force - Stick - Standard 9509 lbf
    Digging Force - Bucket 13946 lbf
    Pump Flow at 2,400 rpm 62 gal/min
    Operating Pressure - Swing 3626 psi
    Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
    Operating Pressure - Equipment 4134 psi
    Maximum Auxiliary Circuit - Secondary - Flow at Pump 9 gal/min
    Maximum Auxiliary Circuit - Secondary - Pressure at Pump 4134 psi
    Maximum Auxiliary Circuit - Primary - Flow at Pump 35 gal/min
    Maximum Auxiliary Circuit - Primary - Pressure at Pump 4134 psi
    Maximum Auxiliary Circuit - Primary (High Flow) - Pressure at Pump 4134 psi
    Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump 37 gal/min

    Swing System

    Machine Swing Speed 10.6 r/min
    Boom Swing - Left 60 degrees
    Boom Swing - Right 50 degrees

    Blade

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

    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"

    Dimensions - VAB In

    Dig Depth 150.2 in
    Cab Height 100 in
    Maximum Blade Depth 19.1 in
    Maximum Blade Height 16.1 in
    Stick Length 71.7 in
    Maximum Reach 256.5 in
    Tail Swing without Counterweight 57.1 in
    Vertical Wall 99.2 in
    Swing Bearing Height 29.8 in
    Track Belt/Shoe Width 17.7 in
    Boom Swing Right 37 in
    Overall Track Width 97.2 in
    Overall Shipping Length 255.7 in
    Maximum Dump Clearance 135.8 in
    Boom in Reach 122.8 in
    Maximum Reach at Ground Level 248 in
    Transport Height 97.4 in
    Overall Undercarriage Length 126 in
    Ground Clearance 14 in
    Tail Swing with Counterweight 62.4 in
    Maximum Dig Height 205.5 in
    Boom Swing Left 24 in

    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.

    Dimensions - VAB Out

    Ground Clearance 14 in
    Cab Height 100 in
    Boom in Reach 106.7 in
    Vertical Wall 146.7 in
    Swing Bearing Height 29.8 in
    Maximum Dump Clearance 247.4 in
    Overall Undercarriage Length 126 in
    Maximum Reach at Ground Level 303.7 in
    Tail Swing without Counterweight 57.1 in
    Maximum Reach 310.4 in
    Track Belt/Shoe Width 17.7 in
    Overall Shipping Length 255.7 in
    Maximum Blade Depth 19.1 in
    Maximum Dig Height 322 in
    Overall Track Width 97.2 in
    Tail Swing with Counterweight 62.4 in
    Stick Length 71.7 in
    Maximum Blade Height 16.1 in
    Boom Swing Right 37 in
    Boom Swing Left 24 in
    Transport Height 97.4 in
    Dig Depth 136.2 in

    Sustainability

    Recyclability 96%
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