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.
Engine
- Net Power
- 55.9hp
- Stroke
- 4in
- Bore
- 3.4in
- Displacement
- 148in³
- 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
- Gross Power - ISO 14396
- 57.9hp
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.
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
Swing System
- Boom Swing - Left
- 60 degrees
- Boom Swing - Right
- 65 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
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.
Sustainability
- 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)
