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

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