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306 CR

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306 CR Mini Hydraulic Excavator
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Overview

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

  • Engine Model Cat C2.4 Turbo Cat C2.4 Turbo
  • Net Power 55.9 HP 41.7 kW
  • Gross Power - ISO 14396 57.9 HP 43.2 kW
  • Displacement 148.0 in³ 2.43 l
  • Bore 3.4 in 87.0 mm
  • Stroke 4.0 in 102.4 mm
  • Rated Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 55.9 HP 41.7 kW

Weights

  • Operating Weight 15766.0 lb 7150.0 kg
  • Minimum Operating Weight with Canopy* 14134.0 lb 6410.0 kg
  • Maximum Operating Weight with Canopy** 15633.0 lb 7090.0 kg
  • 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 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** 15766.0 lb 7150.0 kg
  • Minimum Operating Weight with Cab* 14266.0 lb 6470.0 kg
  • Note (1) *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket. *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.

Weight Increase from Minimum Configuration

  • Counterweight 551.0 lb 250.0 kg
  • Long Stick 97.0 lb 44.0 kg
  • Steel Tracks with Pads 827.0 lb 375.0 kg
  • Angle Blade 225.0 lb 102.0 kg
  • XTC Carriage (no tool) 141.0 lb 64.0 kg

Travel System

  • Ground Pressure - Minimum Weight 5.1 psi 35.4 kPa
  • Ground Pressure - Maximum Weight 5.7 psi 39.1 kPa
  • Gradeability - Maximum 30 degrees 30 degrees
  • Maximum Traction Force - High Speed 6969.0 lbf 31.0 kN
  • Maximum Traction Force - Low Speed 12589.0 lbf 56.0 kN
  • Travel Speed - High 3.1 mile/h 5.0 km/h
  • Travel Speed - Low 1.7 mile/h 2.8 km/h

Service Refill Capacities

  • Cooling System 2.6 gal (US) 10.0 l
  • Hydraulic System 27.5 gal (US) 104.0 l
  • Hydraulic Tank 14.0 gal (US) 53.0 l
  • Engine Oil 2.1 gal (US) 8.0 l
  • Fuel Tank 34.3 gal (US) 130.0 l

Hydraulic System

  • Operating Pressure - Travel 3553.0 psi 24500.0 kPa
  • Auxiliary Circuit - Primary - Flow 24.0 gal/min 90.0 l/min
  • Digging Force - Bucket 11578.0 lbf 51.5 kN
  • Auxiliary Circuit - Primary - Pressure 3553.0 psi 24500.0 kPa
  • Type Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump
  • Auxiliary Circuit - Secondary - Flow 9.0 gal/min 33.0 l/min
  • Operating Pressure - Equipment 3553.0 psi 24500.0 kPa
  • Auxiliary Circuit - Secondary - Pressure 3553.0 psi 24500.0 kPa
  • Digging Force - Stick - Standard 6632.0 lbf 29.5 kN
  • Operating Pressure - Swing 3263.0 psi 22500.0 kPa
  • Digging Force - Stick - Long 5957.0 lbf 26.5 kN
  • Pump Flow at 2,400 rpm 40.0 gal/min 151.0 l/min

Swing System

  • Boom Swing - Right 65 degrees 65 degrees
  • Boom Swing - Left 60 degrees 60 degrees
  • Machine Swing Speed 11.0 r/min 11.0 r/min

Blade

  • Straight Blade Width 78.0 in 1980.0 mm
  • Angle Blade Width 78.0 in 1980.0 mm
  • Straight Blade Height 15.4 in 390.0 mm
  • Angle Blade Height 15.7 in 400.0 mm

Certification - Cab

  • Top Guard ISO 10262:1998 (Level II) ISO 10262:1998 (Level II)
  • Roll Over Protective Structure (ROPS) ISO 12117-2:2008 ISO 12117-2:2008
  • Tip Over Protective Structure (TOPS) ISO 12117:1997 ISO 12117:1997

Sound

  • Operator Sound Pressure (ISO 6396:2008) 72.0 dB(A) 72.0 dB(A)
  • Average Exterior Sound Pressure (ISO 6395:2008) 99.0 dB(A) 99.0 dB(A)
  • Note European Union Directive “2000/14/EC” European Union Directive “2000/14/EC”

Dimensions - Standard Stick

  • Track Belt/Shoe Width 16.0 in 400.0 mm
  • Maximum Reach 248.0 in 6295.0 mm
  • Stick Length 62.0 in 1580.0 mm
  • Vertical Wall 107.0 in 2710.0 mm
  • Swing Bearing - Height 27.0 in 672.0 mm
  • Maximum Reach - Ground Level 241.0 in 6130.0 mm
  • Maximum Blade Height 16.0 in 415.0 mm
  • Ground Clearance 12.0 in 306.0 mm
  • Boom In Reach 98.0 in 2485.0 mm
  • Boom Swing - Right 36.0 in 910.0 mm
  • Transport Height 69.0 in 1755.0 mm
  • Tail Swing with Counterweight 58.0 in 1475.0 mm
  • Cab Height 100.0 in 2545.0 mm
  • Width over Upper House 77.0 in 1950.0 mm
  • Maximum Dump Clearance 170.0 in 4325.0 mm
  • Tail Swing without Counterweight 53.0 in 1350.0 mm
  • Boom Swing - Left 29.0 in 735.0 mm
  • O/A Undercarriage Length 102.0 in 2580.0 mm
  • Maximum Dig Height 230.0 in 5835.0 mm
  • Maximum Blade Depth 24.0 in 600.0 mm
  • O/A Track Width 78.0 in 1980.0 mm
  • Dig Depth 146.0 in 3710.0 mm
  • O/A Shipping Length 235.0 in 5975.0 mm

Dimensions - Long Stick

  • Maximum Blade Height 16.0 in 415.0 mm
  • O/A Track Width 78.0 in 1980.0 mm
  • Track Belt/Shoe Width 16.0 in 400.0 mm
  • Tail Swing with Counterweight 58.0 in 1475.0 mm
  • Vertical Wall 125.0 in 3165.0 mm
  • Boom In Reach 117.0 in 2960.0 mm
  • Maximum Blade Depth 24.0 in 600.0 mm
  • Maximum Dig Height 241.0 in 6130.0 mm
  • Transport Height 95.0 in 2410.0 mm
  • Stick Length 78.0 in 1980.0 mm
  • Ground Clearance 12.0 in 306.0 mm
  • Swing Bearing - Height 27.0 in 672.0 mm
  • Width over Upper House 77.0 in 1950.0 mm
  • O/A Undercarriage Length 102.0 in 2580.0 mm
  • O/A Shipping Length 234.0 in 5950.0 mm
  • Dig Depth 162.0 in 4110.0 mm
  • Cab Height 100.0 in 2545.0 mm
  • Maximum Reach 263.0 in 6685.0 mm
  • Boom Swing - Left 29.0 in 735.0 mm
  • Tail Swing without Counterweight 53.0 in 1350.0 mm
  • Boom Swing - Right 36.0 in 910.0 mm
  • Maximum Dump Clearance 182.0 in 4610.0 mm
  • Maximum Reach - Ground Level 257.0 in 6535.0 mm

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. 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.

ALL DAY COMFORT

  • Your choice of a canopy (availability dependent on region) or a sealed and pressurized cab equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.

EASY TO OPERATE

  • Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.

STICK STEER TRAVEL MODE

  • Moving around the job site is even easier with Cat Stick Steer. Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button. The benefit of less effort and improved control is in your hands!

BIG PERFORMANCE IN A MINI DESIGN

  • Increased lifting, swinging, travel and multi-functioning performance help you get the job done more efficiently.

SAFETY ON THE JOB SITE

  • Your safety is our top priority. The Cat Mini Excavator is designed to help keep you safe on the job. An optional back-up camera, courtesy work lights and a fluorescent retractable seat belt are just a few of the safety features we've built into the machine.

SIMPLE SERVICE FOR LESS DOWNTIME

  • Maintenance is quick and easy on the Cat Mini Excavator. Routine check points are easy to access at ground level with grouped service points and robust service panels.

LOWER OPERATING COSTS

  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat Mini Excavator was designed with reducing your operating costs in mind.

CHOICES

  • Configure the machine to meet your specific application needs with a straight blade, angle blade, or Extra Tool Carrier (XTC).

UNMATCHED DEALER SUPPORT

  • Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.

306 CR 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

306 CR 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

Attachments

Augers

Digging Buckets - Mini Excavator

Ditch Cleaning Buckets - Mini Excavator

Grading Buckets - Mini Excavator

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