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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.

Engine

Net Power

55.9HP

Engine Model

Cat C2.4 Turbo

Gross Power - ISO 14396

57.9HP

Displacement

148in³

Bore

3.4in

Stroke

4in

Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269

55.9HP

Weights

Operating Weight

15766lb

Minimum Operating Weight with Canopy*

14134lb

Maximum Operating Weight with Canopy**

15633lb

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**

15766lb

Minimum Operating Weight with Cab*

14266lb

Note (1)

*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.

Dimensions - Long Stick

Dig Depth

162in

Maximum Blade Height

16in

O/A Track Width

78in

Track Belt/Shoe Width

16in

Tail Swing with Counterweight

58in

Vertical Wall

125in

Boom In Reach

117in

Maximum Blade Depth

24in

Maximum Dig Height

241in

Transport Height

95in

Stick Length

78in

Ground Clearance

12in

Swing Bearing - Height

27in

Width over Upper House

77in

O/A Undercarriage Length

102in

O/A Shipping Length

234in

Cab Height

100in

Maximum Reach

263in

Boom Swing - Left

29in

Tail Swing without Counterweight

53in

Boom Swing - Right

36in

Maximum Dump Clearance

182in

Maximum Reach - Ground Level

257in

Weight Increase from Minimum Configuration

Counterweight

551lb

Long Stick

97lb

Steel Tracks with Pads

827lb

Angle Blade

225lb

XTC Carriage (no tool)

141lb

Travel System

Ground Pressure - Minimum Weight

5.1psi

Ground Pressure - Maximum Weight

5.7psi

Gradeability - Maximum

30 degrees

Maximum Traction Force - High Speed

6969lbf

Maximum Traction Force - Low Speed

12589lbf

Travel Speed - High

3.1mile/h

Travel Speed - Low

1.7mile/h

Service Refill Capacities

Cooling System

2.6gal (US)

Hydraulic System

27.5gal (US)

Hydraulic Tank

14gal (US)

Engine Oil

2.1gal (US)

Fuel Tank

34.3gal (US)

Hydraulic System

Operating Pressure - Travel

3553psi

Auxiliary Circuit - Primary - Flow

24gal/min

Digging Force - Bucket

11578lbf

Auxiliary Circuit - Primary - Pressure

3553psi

Type

Load Sensing Hydraulics with Variable Displacement Piston Pump

Auxiliary Circuit - Secondary - Flow

9gal/min

Operating Pressure - Equipment

3553psi

Auxiliary Circuit - Secondary - Pressure

3553psi

Digging Force - Stick - Standard

6632lbf

Operating Pressure - Swing

3263psi

Digging Force - Stick - Long

5957lbf

Pump Flow at 2,400 rpm

40gal/min

Swing System

Boom Swing - Right

65 degrees

Boom Swing - Left

60 degrees

Machine Swing Speed

11r/min

Blade

Straight Blade Width

78in

Angle Blade Width

78in

Straight Blade Height

15.4in

Angle Blade Height

15.7in

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)

72dB(A)

Average Exterior Sound Pressure (ISO 6395:2008)

99dB(A)

Note

European Union Directive “2000/14/EC”

Dimensions - Standard Stick

Track Belt/Shoe Width

16in

Maximum Reach

248in

Stick Length

62in

Vertical Wall

107in

Swing Bearing - Height

27in

Maximum Reach - Ground Level

241in

Maximum Blade Height

16in

Ground Clearance

12in

Boom In Reach

98in

Boom Swing - Right

36in

Transport Height

69in

Tail Swing with Counterweight

58in

Cab Height

100in

Width over Upper House

77in

Maximum Dump Clearance

170in

Tail Swing without Counterweight

53in

Boom Swing - Left

29in

O/A Undercarriage Length

102in

Maximum Dig Height

230in

Maximum Blade Depth

24in

O/A Track Width

78in

Dig Depth

146in

O/A Shipping Length

235in

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.

Standard Equipment:

  • 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

Optional Equipment:

  • 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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