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.
Net Power
41.7 kW
Gross Power – ISO 14396
43.2 kW
Displacement
2.43 l
Product specifications for 306 CR Mini Excavators
Engine
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Net Power
41.7 kW
Gross Power – ISO 14396
43.2 kW
Displacement
2.43 l
Bore
87 mm
Stroke
102.4 mm
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
41.7 kW
Weights
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Operating Weight
7150 kg
Minimum Operating Weight with Canopy*
6410 kg
Maximum Operating Weight with Canopy**
7090 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 Operating Weight with Cab**
7150 kg
Minimum Operating Weight with Cab*
6470 kg
Note (1)
*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.
Weight Increase from Minimum Configuration
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Counterweight
250 kg
Long Stick
44 kg
Steel Tracks with Pads
375 kg
Angle Blade
102 kg
XTC Carriage (no tool)
64 kg
Travel System
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Ground Pressure – Minimum Weight
35.4 kPa
Ground Pressure – Maximum Weight
39.1 kPa
Gradeability – Maximum
30 degrees
Maximum Traction Force – High Speed
31 kN
Maximum Traction Force – Low Speed
56 kN
Travel Speed – High
5 km/h
Travel Speed – Low
2.8 km/h
Service Refill Capacities
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Cooling System
10 l
Hydraulic System
104 l
Hydraulic Tank
53 l
Engine Oil
8 l
Fuel Tank
130 l
Hydraulic System
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Operating Pressure – Travel
24500 kPa
Auxiliary Circuit – Primary – Flow
90 l/min
Digging Force – Bucket
51.5 kN
Auxiliary Circuit – Primary – Pressure
24500 kPa
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit – Secondary – Flow
33 l/min
Operating Pressure – Equipment
24500 kPa
Auxiliary Circuit – Secondary – Pressure
24500 kPa
Digging Force – Stick – Standard
29.5 kN
Operating Pressure – Swing
22500 kPa
Digging Force – Stick – Long
26.5 kN
Pump Flow at 2,400 rpm
151 l/min
Swing System
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Boom Swing – Right
65 degrees
Boom Swing – Left
60 degrees
Machine Swing Speed
11 r/min
Blade
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Straight Blade Width
1980 mm
Angle Blade Width
1980 mm
Straight Blade Height
390 mm
Angle Blade Height
400 mm
Certification – Cab
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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
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Operator Sound Pressure (ISO 6396:2008)
72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
Note
European Union Directive “2000/14/EC”
Dimensions – Standard Stick
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Track Belt/Shoe Width
400 mm
Maximum Reach
6295 mm
Stick Length
1580 mm
Vertical Wall
2710 mm
Swing Bearing – Height
672 mm
Maximum Reach – Ground Level
6130 mm
Maximum Blade Height
415 mm
Ground Clearance
306 mm
Boom In Reach
2485 mm
Boom Swing – Right
910 mm
Transport Height
1755 mm
Tail Swing with Counterweight
1475 mm
Cab Height
2545 mm
Width over Upper House
1950 mm
Maximum Dump Clearance
4325 mm
Tail Swing without Counterweight
1350 mm
Boom Swing – Left
735 mm
O/A Undercarriage Length
2580 mm
Maximum Dig Height
5835 mm
Maximum Blade Depth
600 mm
O/A Track Width
1980 mm
Dig Depth
3710 mm
O/A Shipping Length
5975 mm
Dimensions – Long Stick
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Dig Depth
4110 mm
Maximum Blade Height
415 mm
O/A Track Width
1980 mm
Track Belt/Shoe Width
400 mm
Tail Swing with Counterweight
1475 mm
Vertical Wall
3165 mm
Boom In Reach
2960 mm
Maximum Blade Depth
600 mm
Maximum Dig Height
6130 mm
Transport Height
2410 mm
Stick Length
1980 mm
Ground Clearance
306 mm
Swing Bearing – Height
672 mm
Width over Upper House
1950 mm
O/A Undercarriage Length
2580 mm
O/A Shipping Length
5950 mm
Cab Height
2545 mm
Maximum Reach
6685 mm
Boom Swing – Left
735 mm
Tail Swing without Counterweight
1350 mm
Boom Swing – Right
910 mm
Maximum Dump Clearance
4610 mm
Maximum Reach – Ground Level
6535 mm
Air Conditioning System
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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.
Sustainability
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Recyclability
96%
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.
SUSTAINABILITY
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)
306 CR Standard Equipment
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OPERATOR ENVIRONMENT – CAB AND CANOPY
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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
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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
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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
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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
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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
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Locks on External Enclosure Doors
Lockable Fuel Cap
Beacon Socket
Rear Reflectors
306 CR Optional Equipment
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OPERATOR ENVIRONMENT – CAB AND CANOPY
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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
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Cab Heat Only
Air Suspension Heated Seat
UNDERCARRIAGE
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Angle Blade
Extra Tool Carrier (XTC)
Steel Tracks (450 mm/17.7 in wide)
Steel Track with Rubber Pads
BOOM, STICK AND LINKAGES
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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
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Product Link Elite (regulations apply)
Camera
Rotating Beacon
GUARDING
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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
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Additional Counterweight
Water Jacket Heater
Refueling Pump
