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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Engine

Engine Model Cat C2.4 Turbo
Net Power 55.9HP
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.

Swing System

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

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

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

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

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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