New CAT Equipment

306 CR Mini Hydraulic Excavator

Mini Excavators Inspired by Our Customers

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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    Benefits

    4 Industry First Features

    Cat Exclusives in a Mini Excavator

    Up to 10% Lower Total Ownership Costs

    with improved fuel efficiency and longer service intervals

    Up to 20% More Performance

    with customizable operator settings and improvements in lift, swing, travel and multifunction
    • 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.
    • Blade
      Angle Blade Height
      15.7 in
      Angle Blade Width
      78 in
      Straight Blade Height
      15.4 in
      Straight Blade Width
      78 in
    • Certification - Cab
      Roll Over Protective Structure (ROPS)
      ISO 12117-2:2008
      Tip Over Protective Structure (TOPS)
      ISO 12117:1997
      Top Guard
      ISO 10262:1998 (Level II)
    • Dimensions - Long Stick
      Boom In Reach
      117 in
      Boom Swing - Left
      29 in
      Boom Swing - Right
      36 in
      Cab Height
      100 in
      Dig Depth
      162 in
      Ground Clearance
      12 in
      Maximum Blade Depth
      24 in
      Maximum Blade Height
      16 in
      Maximum Dig Height
      241 in
      Maximum Dump Clearance
      182 in
      Maximum Reach
      263 in
      Maximum Reach - Ground Level
      257 in
      O/A Shipping Length
      234 in
      O/A Track Width
      78 in
      O/A Undercarriage Length
      102 in
      Stick Length
      78 in
      Swing Bearing - Height
      27 in
      Tail Swing with Counterweight
      58 in
      Tail Swing without Counterweight
      53 in
      Track Belt/Shoe Width
      16 in
      Transport Height
      95 in
      Vertical Wall
      125 in
      Width over Upper House
      77 in
    • Dimensions - Standard Stick
      Boom In Reach
      98 in
      Boom Swing - Left
      29 in
      Boom Swing - Right
      36 in
      Cab Height
      100 in
      Dig Depth
      146 in
      Ground Clearance
      12 in
      Maximum Blade Depth
      24 in
      Maximum Blade Height
      16 in
      Maximum Dig Height
      230 in
      Maximum Dump Clearance
      170 in
      Maximum Reach
      248 in
      Maximum Reach - Ground Level
      241 in
      O/A Shipping Length
      235 in
      O/A Track Width
      78 in
      O/A Undercarriage Length
      102 in
      Stick Length
      62 in
      Swing Bearing - Height
      27 in
      Tail Swing with Counterweight
      58 in
      Tail Swing without Counterweight
      53 in
      Track Belt/Shoe Width
      16 in
      Transport Height
      69 in
      Vertical Wall
      107 in
      Width over Upper House
      77 in
    • Engine
      Bore
      3.4 in
      Displacement
      148 in³
      Engine Model
      Cat C2.4 Turbo
      Gross Power - ISO 14396
      57.9 HP
      Net Power
      55.9 HP
      Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
      55.9 HP
      Stroke
      4 in
    • Hydraulic System
      Auxiliary Circuit - Primary - Flow
      24 gal/min
      Auxiliary Circuit - Primary - Pressure
      3553 psi
      Auxiliary Circuit - Secondary - Flow
      9 gal/min
      Auxiliary Circuit - Secondary - Pressure
      3553 psi
      Digging Force - Bucket
      11578 lbf
      Digging Force - Stick - Long
      5957 lbf
      Digging Force - Stick - Standard
      6632 lbf
      Operating Pressure - Equipment
      3553 psi
      Operating Pressure - Swing
      3263 psi
      Operating Pressure - Travel
      3553 psi
      Pump Flow at 2,400 rpm
      40 gal/min
      Type
      Load Sensing Hydraulics with Variable Displacement Piston Pump
    • Service Refill Capacities
      Cooling System
      2.6 gal (US)
      Engine Oil
      2.1 gal (US)
      Fuel Tank
      34.3 gal (US)
      Hydraulic System
      27.5 gal (US)
      Hydraulic Tank
      14 gal (US)
    • 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)
    • Sustainability
      Recyclability
      96%
    • Swing System
      Boom Swing - Left
      60 degrees
      Boom Swing - Right
      65 degrees
      Machine Swing Speed
      11 r/min
    • Travel System
      Gradeability - Maximum
      30 degrees
      Ground Pressure - Maximum Weight
      5.7 psi
      Ground Pressure - Minimum Weight
      5.1 psi
      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
    • Weight Increase from Minimum Configuration
      Angle Blade
      225 lb
      Counterweight
      551 lb
      Long Stick
      97 lb
      Steel Tracks with Pads
      827 lb
      XTC Carriage (no tool)
      141 lb
    • Weights
      Maximum Operating Weight with Cab**
      15766 lb
      Maximum Operating Weight with Canopy**
      15633 lb
      Minimum Operating Weight with Cab*
      14266 lb
      Minimum Operating Weight with Canopy*
      14134 lb
      Note (1)
      *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.
      Note (2)
      **Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, fixed blade and no bucket.
      Operating Weight
      15766 lb
    OPERATOR ENVIRONMENT – CAB AND CANOPY
    • 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
    • Hydraulic Lockout Controls
    • High Back, Suspension Seat
    • Retractable Seat Belt (75 mm/3 in)
    • Coat Hook
    • Cup Holder
    • Literature Holder
    • Mounting Bosses for Top and Front Guards
    • Signaling/Warning Horn
    • Cab and (left side) Boom Work Lights
    • Utility Space for Mobile Phone
    • Next Generation Color LCD Monitor (IP66)
      – 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
    OPERATOR ENVIRONMENT – CAB ONLY
    • Operator Sound Pressure 72 dB(A) ISO 6396:2008
    • HVAC with Automatic Temperature Control
    • Integrated Lower Front Window
    • Assisted Front Window Overhead Storage
    • Rear Window Emergency Exit
    • LED Interior Light
    • 12V Power Socket
    • Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only)
    • Skylight
    • Jog dial interface
    UNDERCARRIAGE
    • Greased and Lubricated Track
    • Hydraulic Track Adjusters
    • Tie Down Eyes on Track Frame
    • Dozer Straight Blade
    • Dozer Float
    • Bolt-on, Reversible Wear Edge
    • Rubber Tracks
    BOOM, STICK AND LINKAGES
    • One Piece Boom (3055 mm/120.3 in)
    • Standard Stick (1580 mm/62.2 in)
    • Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler for Cat Tools
    • Thumb Ready
    ELECTRICAL
    • 12 Volt Electrical System
    • 90 Ampere Alternator
    • 650 CCA Maintenance Free Battery
    • Battery Disconnect
    • Circuit Breaker
    • Ignition Key Stop Switch
    • Signaling/Warning Horn
    • Product Link Basic (regulations apply)
    • Travel Alarm
    OTHER
    • Locks on External Enclosure Doors
    • Lockable Fuel Cap
    • Beacon Socket
    • Rear Reflectors
    OPERATOR ENVIRONMENT – CAB AND CANOPY
    • 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
    OPERATOR ENVIRONMENT – CAB ONLY
    • Cab Heat Only
    • Air Suspension Heated Seat
    UNDERCARRIAGE
    • Angle Blade
    • Extra Tool Carrier (XTC)
    • Steel Tracks (450 mm/17.7 in wide)
    • Steel Track with Rubber Pads
    BOOM, STICK AND LINKAGES
    • Long Stick (190 mm/78 in)
    • Attachments including Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Certified Lifting Eye
    ELECTRICAL
    • Product Link Elite (regulations apply)
    • Camera
    • Rotating Beacon
    GUARDING
    • Heavy Duty Front Guard ISO 10262 1998 Level II
    • Mesh Front Guard ISO 10262 1998 Level I
    • Overhead Cab Guard ISO 10262 1998 Level II
    • Polycarbonate Front Window EN356 P5A (Cab Only)
    • Track Guards
    OTHER
    • Additional Counterweight
    • Water Jacket Heater
    • Refueling Pump