New CAT Equipment

306 CR Mini Hydraulic Excavator

The Cat® 306 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

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    Product Specs

    Engine

    Engine Model Cat C2.4 Turbo
    Net Power 55.9 HP
    Gross Power - ISO 14396 57.9 HP
    Displacement 148 in³
    Bore 3.4 in
    Stroke 4 in
    Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 55.9 HP

    Weights

    Operating Weight 15766 lb
    Minimum Operating Weight with Canopy* 14134 lb
    Maximum Operating Weight with Canopy** 15633 lb
    Note (2) **Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, fixed blade and no bucket.
    Maximum Operating Weight with Cab** 15766 lb
    Minimum Operating Weight with Cab* 14266 lb
    Note (1) *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.

    Weight Increase from Minimum Configuration

    Counterweight 551 lb
    Long Stick 97 lb
    Steel Tracks with Pads 827 lb
    Angle Blade 225 lb
    XTC Carriage (no tool) 141 lb

    Travel System

    Ground Pressure - Minimum Weight 5.1 psi
    Ground Pressure - Maximum Weight 5.7 psi
    Gradeability - Maximum 30 degrees
    Maximum Traction Force - High Speed 6969 lbf
    Maximum Traction Force - Low Speed 12589 lbf
    Travel Speed - High 3.1 mile/h
    Travel Speed - Low 1.7 mile/h

    Service Refill Capacities

    Cooling System 2.6 gal (US)
    Hydraulic System 27.5 gal (US)
    Hydraulic Tank 14 gal (US)
    Engine Oil 2.1 gal (US)
    Fuel Tank 34.3 gal (US)

    Hydraulic System

    Operating Pressure - Travel 3553 psi
    Auxiliary Circuit - Primary - Flow 24 gal/min
    Digging Force - Bucket 11578 lbf
    Auxiliary Circuit - Primary - Pressure 3553 psi
    Type Load Sensing Hydraulics with Variable Displacement Piston Pump
    Auxiliary Circuit - Secondary - Flow 9 gal/min
    Operating Pressure - Equipment 3553 psi
    Auxiliary Circuit - Secondary - Pressure 3553 psi
    Digging Force - Stick - Standard 6632 lbf
    Operating Pressure - Swing 3263 psi
    Digging Force - Stick - Long 5957 lbf
    Pump Flow at 2,400 rpm 40 gal/min

    Swing System

    Boom Swing - Right 65 degrees
    Boom Swing - Left 60 degrees
    Machine Swing Speed 11 r/min

    Blade

    Straight Blade Width 78 in
    Angle Blade Width 78 in
    Straight Blade Height 15.4 in
    Angle Blade Height 15.7 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

    Operator Sound Pressure (ISO 6396:2008) 72 dB(A)
    Average Exterior Sound Pressure (ISO 6395:2008) 99 dB(A)
    Note European Union Directive “2000/14/EC”

    Dimensions - Standard Stick

    Track Belt/Shoe Width 16 in
    Maximum Reach 248 in
    Stick Length 62 in
    Vertical Wall 107 in
    Swing Bearing - Height 27 in
    Maximum Reach - Ground Level 241 in
    Maximum Blade Height 16 in
    Ground Clearance 12 in
    Boom In Reach 98 in
    Boom Swing - Right 36 in
    Transport Height 69 in
    Tail Swing with Counterweight 58 in
    Cab Height 100 in
    Width over Upper House 77 in
    Maximum Dump Clearance 170 in
    Tail Swing without Counterweight 53 in
    Boom Swing - Left 29 in
    O/A Undercarriage Length 102 in
    Maximum Dig Height 230 in
    Maximum Blade Depth 24 in
    O/A Track Width 78 in
    Dig Depth 146 in
    O/A Shipping Length 235 in

    Dimensions - Long Stick

    Maximum Blade Height 16 in
    O/A Track Width 78 in
    Track Belt/Shoe Width 16 in
    Tail Swing with Counterweight 58 in
    Vertical Wall 125 in
    Boom In Reach 117 in
    Maximum Blade Depth 24 in
    Maximum Dig Height 241 in
    Transport Height 95 in
    Stick Length 78 in
    Ground Clearance 12 in
    Swing Bearing - Height 27 in
    Width over Upper House 77 in
    O/A Undercarriage Length 102 in
    O/A Shipping Length 234 in
    Dig Depth 162 in
    Cab Height 100 in
    Maximum Reach 263 in
    Boom Swing - Left 29 in
    Tail Swing without Counterweight 53 in
    Boom Swing - Right 36 in
    Maximum Dump Clearance 182 in
    Maximum Reach - Ground Level 257 in

    Air Conditioning System

    Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1287). The system contains 0.9 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes.