306 CR Mini Hydraulic Excavator
Mini Excavators
Details
Net Power
55.9 HP
Operating Weight
15766 lb
Dig Depth
162 in
Overview
Mini Excavators Inspired by Our Customers
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.
Benefits
Industry First Features
Cat Exclusives in a Mini Excavator
Lower Total Ownership Costs
with improved fuel efficiency and longer service intervals
More Performance
with customizable operator settings and improvements in lift, swing, travel and multifunction
Features at a Glance
- ALL DAY COMFORT
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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.
- EASY TO OPERATE
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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.
- STICK STEER TRAVEL MODE
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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!
- BIG PERFORMANCE IN A MINI DESIGN
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- Increased lifting, swinging, travel and multi-functioning performance help you get the job done more efficiently.
- SAFETY ON THE JOB SITE
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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.
- SIMPLE SERVICE FOR LESS DOWNTIME
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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.
- LOWER OPERATING COSTS
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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.
- CHOICES
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- Configure the machine to meet your specific application needs with a straight blade, angle blade, or Extra Tool Carrier (XTC).
- UNMATCHED DEALER SUPPORT
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- 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
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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).
Specifications
Full Specifications
- Engine
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Net Power
55.9 HPGross Power - ISO 14396
57.9 HPDisplacement
148 in³Bore
3.4 inStroke
4 inEngine Model
Cat C2.4 TurboNet Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
55.9 HP
- Weights
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Operating Weight
15766 lbMinimum Operating Weight with Canopy*
14134 lbMaximum Operating Weight with Canopy**
15633 lbNote (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**
15766 lbMinimum Operating Weight with Cab*
14266 lbNote (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
551 lbLong Stick
97 lbSteel Tracks with Pads
827 lbAngle Blade
225 lbXTC Carriage (no tool)
141 lb
- Travel System
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Ground Pressure - Minimum Weight
5.1 psiGround Pressure - Maximum Weight
5.7 psiGradeability - Maximum
30 degreesMaximum Traction Force - High Speed
6969 lbfMaximum Traction Force - Low Speed
12589 lbfTravel Speed - High
3.1 mile/hTravel Speed - Low
1.7 mile/h
- Service Refill Capacities
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Cooling System
2.6 gal (US)Hydraulic System
27.5 gal (US)Hydraulic Tank
14 gal (US)Engine Oil
2.1 gal (US)Fuel Tank
34.3 gal (US)
- Hydraulic System
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Operating Pressure - Travel
3553 psiAuxiliary Circuit - Primary - Flow
24 gal/minDigging Force - Bucket
11578 lbfAuxiliary Circuit - Primary - Pressure
3553 psiType
Load Sensing Hydraulics with Variable Displacement Piston PumpAuxiliary Circuit - Secondary - Flow
9 gal/minOperating Pressure - Equipment
3553 psiAuxiliary Circuit - Secondary - Pressure
3553 psiDigging Force - Stick - Standard
6632 lbfOperating Pressure - Swing
3263 psiDigging Force - Stick - Long
5957 lbfPump Flow at 2,400 rpm
40 gal/min
- Swing System
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Boom Swing - Right
65 degreesBoom Swing - Left
60 degreesMachine Swing Speed
11 r/min
- Blade
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Straight Blade Width
78 inAngle Blade Width
78 inStraight Blade Height
15.4 inAngle Blade Height
15.7 in
- Certification - Cab
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Top Guard
ISO 10262:1998 (Level II)Roll Over Protective Structure (ROPS)
ISO 12117-2:2008Tip 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
16 inMaximum Reach
248 inStick Length
62 inVertical Wall
107 inSwing Bearing - Height
27 inMaximum Reach - Ground Level
241 inMaximum Blade Height
16 inGround Clearance
12 inBoom In Reach
98 inBoom Swing - Right
36 inTransport Height
69 inTail Swing with Counterweight
58 inCab Height
100 inWidth over Upper House
77 inMaximum Dump Clearance
170 inTail Swing without Counterweight
53 inBoom Swing - Left
29 inO/A Undercarriage Length
102 inMaximum Dig Height
230 inMaximum Blade Depth
24 inO/A Track Width
78 inDig Depth
146 inO/A Shipping Length
235 in
- Dimensions - Long Stick
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Dig Depth
162 inMaximum Blade Height
16 inO/A Track Width
78 inTrack Belt/Shoe Width
16 inTail Swing with Counterweight
58 inVertical Wall
125 inBoom In Reach
117 inMaximum Blade Depth
24 inMaximum Dig Height
241 inTransport Height
95 inStick Length
78 inGround Clearance
12 inSwing Bearing - Height
27 inWidth over Upper House
77 inO/A Undercarriage Length
102 inO/A Shipping Length
234 inCab Height
100 inMaximum Reach
263 inBoom Swing - Left
29 inTail Swing without Counterweight
53 inBoom Swing - Right
36 inMaximum Dump Clearance
182 inMaximum Reach - Ground Level
257 in
- 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%
Equipment
- Standard Equipment
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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
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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