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306 CR Mini Hydraulic Excavator

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306 CR Mini Hydraulic Excavator

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.

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306 CR Mini Hydraulic Excavator

306 CR Mini Hydraulic Excavator

306 CR Mini Hydraulic Excavator

306 CR Mini Hydraulic Excavator

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  • 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.
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  • Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.
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  • 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!
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  • Increased lifting, swinging, travel and multi-functioning performance help you get the job done more efficiently.
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  • 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.
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  • 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.
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  • 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.
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  • Configure the machine to meet your specific application needs with a straight blade, angle blade, or Extra Tool Carrier (XTC).

  • 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.
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  • The Cat® C2.4 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
  • Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
  • Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
  • Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
  • Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
  • The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
  • Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
  • Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
  • Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
  • Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (if equipped).
*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)
Net Power
55.9hp
Gross Power – ISO 14396
57.9hp
Displacement
148in³
Bore
3.4in
Stroke
4in
Engine Model
Cat C2.4 Turbo
Net Power @ 2,200 rpm – U.S. EPA Tier 4 Final/EU Stage V – ISO 9249/EEC 80/1269
55.9hp
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.
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
Counterweight
551lb
Long Stick
97lb
Steel Tracks with Pads
827lb
Angle Blade
225lb
XTC Carriage (no tool)
141lb
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
Cooling System
2.6gal (US)
Hydraulic System
27.5gal (US)
Hydraulic Tank
14gal (US)
Engine Oil
2.1gal (US)
Fuel Tank
34.3gal (US)
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
Boom Swing – Right
65 degrees
Boom Swing – Left
60 degrees
Machine Swing Speed
11r/min
Straight Blade Width
78in
Angle Blade Width
78in
Straight Blade Height
15.4in
Angle Blade Height
15.7in
Top Guard
ISO 10262:1998 (Level II)
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Operator Sound Pressure (ISO 6396:2008)
72dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99dB(A)
Note
European Union Directive “2000/14/EC”
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
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.
Recyclability
96%
  • 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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