309 CR Mini Hydraulic Excavator
The Cat® 309 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.The 309 CR also features high flow hydraulics to handle power hungry attachments such as mulchers and brushcutters.
Product Images
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
309 CR Mini Hydraulic Excavator
Product Videos
Introducing the Next Generation Cat 7-10 Ton Mini Excavators
Overview of the Next Generation Cat 7-10 Ton Mini Excavators
Standard Monitor on the Next Generation Cat Mini Excavators
Stick Steer on the Cat Next Generation Mini Excavators
Cat 309 CR Mini Excavator Customer Story - Webb Excavating (Tennessee, USA)
Daily Maintenance and Inspection on the Cat 7-10 Ton Mini Excavators
Safety Features on the Cat 7-10 Ton Mini Excavators
Virtual Product Tour (VPT)
Virtual Product Tour
360° Exterior View (HTML5)
360° Interior View (HTML5)
Specifications
| Name | Type | Value | Unit Value (Imperial) | Unit Name | Unit Value (Metric) | Unit Name (Metric) |
|---|---|---|---|---|---|---|
| Net Power | measurement | 69 | hp | 51.2 | kW | |
| Engine Model | text | Cat® C2.8 Turbo | ||||
| Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC | measurement | 69 | hp | 51.2 | kW |
Documents & Spec Sheets
309 CR Long Undercarriage Product Brochure (North America, Chile, Colombia, Europe, Turkey, ANZP)
309 CR Long Undercarriage Product Brochure
Download309 CR Standard Undercarriage Product Brochure (Europe, Turkey, ANZP)
309 CR Standard Undercarriage Product Brochure (Europe, Turkey, ANZP)
DownloadCat Mini Hydraulic Excavators Product Line Brochure (North America)
DownloadCat Mini Hydraulic Excavators Product Line Brochure (Europe)
DownloadOptions And Accessories Kit Guide for Mini Hydraulic Excavators
Options And Accessories Kit Guide for Mini Hydraulic Excavators
DownloadCat Attachments for Mini Excavators Brochure
DownloadAttachment Compatibility Guide for Mini Excavators
DownloadFeatures & Benefits
ALL DAY COMFORT
- A sealed and pressurized cab is 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 the Cat Stick Steer option. 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 helps you get the job done more efficiently, blade float allows for easy clean up and long undercarriage provides improved stability.
HIGH FLOW
- Dedicated auxiliary hydraulic pump is ideal for running power-hungry attachments while allowing the machine to simultaneously travel and multifunction. This feature allows consistent pressure to the auxiliary lines with no loss of hydraulic power keeping your attachment running at full power maintaining optimal productivity.
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. A 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.
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® C2.8 Turbo engine meets U.S. EPA Tier 4 Final and EU Stage V 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).
Complete Specifications
Engine
| Name | Type | Value | Unit Value (Imperial) | Unit Name | Unit Value (Metric) | Unit Name (Metric) |
|---|---|---|---|---|---|---|
| Net Power | measurement | 69 | hp | 51.2 | kW | |
| Engine Model | text | Cat® C2.8 Turbo | ||||
| Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC | measurement | 69 | hp | 51.2 | kW | |
| Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC | measurement | 69 | hp | 51.2 | kW | |
| Gross Power - ISO 14396 | measurement | 55.4 | kW | 74.3 | hp | |
| Bore | measurement | 3.5 | in | 90 | mm | |
| Stroke | measurement | 4.3 | in | 110 | mm | |
| Displacement | measurement | 171 | in³ | 2.8 | l | |
| Note | text | Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards. | ||||
| Note (1) | text | Advertised power is tested per the specified standard in effect at the time of manufacture. | ||||
| Note (2) | text | Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load. | ||||
| Operating Weight | measurement | 20870 | lb | 9465 | kg | |
| Minimum Operating Weight with Cab* | measurement | 18886 | lb | 8565 | kg | |
| Maximum Operating Weight with Cab** | measurement | 20870 | lb | 9465 | kg | |
| Note (1) | text | *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket. | ||||
| Note (2) | text | **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket. | ||||
| Counterweight | measurement | 552 | lb | 250 | kg | |
| Long Stick | measurement | 146 | lb | 66 | kg | |
| Steel Tracks with Pads | measurement | 728 | lb | 330 | kg | |
| Travel Speed - High | measurement | 3.1 | mile/h | 4.9 | km/h | |
| Travel Speed - Low | measurement | 1.6 | mile/h | 2.6 | km/h | |
| Maximum Traction Force - High Speed | measurement | 6497 | lbf | 28.9 | kN | |
| Maximum Traction Force - Low Speed | measurement | 19064 | lbf | 84.8 | kN | |
| Ground Pressure - Minimum Weight | measurement | 5.4 | psi | 37.5 | kPa | |
| Ground Pressure - Maximum Weight | measurement | 6 | psi | 41.4 | kPa | |
| Gradeability - Maximum | text | 30 degrees | ||||
| Cooling System | measurement | 2.6 | gal (US) | 10 | l | |
| Engine Oil | measurement | 2.3 | gal (US) | 8.8 | l | |
| Fuel Tank | measurement | 39 | gal (US) | 147 | l | |
| Hydraulic Tank | measurement | 14 | gal (US) | 53 | l | |
| Hydraulic System | measurement | 29 | gal (US) | 110 | l | |
| Type | text | Load Sensing Hydraulics with Variable Displacement Piston Pump | ||||
| Pump Flow at 2,400 rpm | measurement | 62 | gpm | 233 | L/min | |
| Operating Pressure - Equipment | measurement | 4134 | psi | 285 | bar | |
| Operating Pressure - Travel | measurement | 4134 | psi | 285 | bar | |
| Operating Pressure - Swing | measurement | 3626 | psi | 250 | bar | |
| Maximum Auxiliary Circuit - Primary - Flow at Pump | measurement | 35 | gpm | 131 | L/min | |
| Maximum Auxiliary Circuit - Primary - Pressure at Pump | measurement | 4134 | psi | 285 | bar | |
| Maximum Auxiliary Circuit - High Flow - Flow at Pump | measurement | 37 | gpm | 140 | L/min | |
| Maximum Auxiliary Circuit - High Flow - Pressure at Pump | measurement | 4134 | lbf/in | 285 | bar | |
| Digging Force - Stick - Standard | measurement | 9500 | lbf | 42.3 | kN | |
| Digging Force - Stick - Long | measurement | 8023 | lbf | 35.7 | kN | |
| Digging Force - Bucket | measurement | 13943 | lbf | 62 | kN | |
| Note | text | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. | ||||
| Machine Swing Speed | measurement | 10 | r/min | 10 | r/min | |
| Boom Swing - Left | text | 60 degrees | ||||
| Boom Swing - Right | text | 50 degrees | ||||
| Width - Standard | measurement | 97 | in | 2470 | mm | |
| Width - Wide | measurement | 104 | in | 2640 | mm | |
| Height | measurement | 17 | in | 431 | mm | |
| Roll Over Protective Structure (ROPS) | text | ISO 12117-2:2008 | ||||
| Top Guard | text | ISO 10262:1998 (Level I) | ||||
| Dig Depth | measurement | 161.7 | in | 4108 | mm | |
| Vertical Wall | measurement | 117.8 | in | 2991 | mm | |
| Maximum Reach - Ground Level | measurement | 273.6 | in | 6949 | mm | |
| Maximum Reach | measurement | 281.1 | in | 7141 | mm | |
| Maximum Dig Height | measurement | 265.2 | in | 6736 | mm | |
| Maximum Dump Clearance | measurement | 187.4 | in | 4760 | mm | |
| Boom In Reach | measurement | 120.4 | in | 3059 | mm | |
| Tail Swing with Counterweight | measurement | 62.4 | in | 1585 | mm | |
| Tail Swing without Counterweight | measurement | 57.1 | in | 1450 | mm | |
| Maximum Blade Height | measurement | 16.1 | in | 408 | mm | |
| Maximum Blade Depth | measurement | 26 | in | 671 | mm | |
| Height - Boom Transport - No Tools* | measurement | 95.7 | in | 2430 | mm | |
| Height - Boom Working - With Tools** | measurement | 104.7 | in | 2660 | mm | |
| Cab Height | measurement | 100 | in | 2541 | mm | |
| Swing Bearing - Height | measurement | 29.7 | in | 756 | mm | |
| O/A Undercarriage Length | measurement | 126 | in | 3200 | mm | |
| Overall Shipping Length - with Counterweight | measurement | 266.7 | in | 6774 | mm | |
| Overall Shipping Length - without Counterweight | measurement | 266.7 | in | 6774 | mm | |
| Track Belt/Shoe Width | measurement | 17.7 | in | 450 | mm | |
| O/A Track Width | measurement | 97.2 | in | 2470 | mm | |
| Ground Clearance | measurement | 14 | in | 356 | mm | |
| Stick Length | measurement | 71.8 | in | 1820 | mm | |
| Note | text | *Boom Height when stick is pinned in transport position with no attachments. | ||||
| Note (1) | text | **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position. | ||||
| Note (2) | text | ***With blade positioned at the rear of the machine. | ||||
| Dig Depth | measurement | 182.8 | in | 4642 | mm | |
| Vertical Wall | measurement | 134 | in | 3404 | mm | |
| Maximum Reach - Ground Level | measurement | 293.7 | in | 7460 | mm | |
| Maximum Reach | measurement | 300.7 | in | 7637 | mm | |
| Maximum Dig Height | measurement | 277.1 | in | 7039 | mm | |
| Maximum Dump Clearance | measurement | 199.7 | in | 5072 | mm | |
| Boom In Reach | measurement | 126.6 | in | 3215 | mm | |
| Tail Swing with Counterweight | measurement | 62.4 | in | 1585 | mm | |
| Tail Swing without Counterweight | measurement | 57.1 | in | 1450 | mm | |
| Maximum Blade Height | measurement | 16.1 | in | 408 | mm | |
| Maximum Blade Depth | measurement | 26 | in | 671 | mm | |
| Height - Boom Transport - No Tools* | measurement | 89 | in | 2260 | mm | |
| Height - Boom Working - With Tools** | measurement | 120.1 | in | 3050 | mm | |
| Cab Height | measurement | 100 | in | 2541 | mm | |
| Swing Bearing - Height | measurement | 29.7 | in | 756 | mm | |
| O/A Undercarriage Length | measurement | 126 | in | 3200 | mm | |
| Overall Shipping Length - with Counterweight | text | 7052 mm (277.6 in)*** | ||||
| Overall Shipping Length - without Counterweight | text | 7052 mm (277.6 in)*** | ||||
| Track Belt/Shoe Width | measurement | 17.7 | in | 450 | mm | |
| O/A Track Width | measurement | 97.2 | in | 2470 | mm | |
| Ground Clearance | measurement | 14 | in | 356 | mm | |
| Stick Length | measurement | 92.8 | in | 2358 | mm | |
| Note | text | *Boom Height when stick is pinned in transport position with no attachments. | ||||
| Note (1) | text | **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position. | ||||
| Note (2) | text | ***With blade positioned at the rear of the machine. | ||||
| Air Conditioning | text | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe). | ||||
| Operator Sound Pressure (ISO 6396:2008) | measurement | 72 | dB(A) | 72 | dB(A) | |
| Average Exterior Sound Pressure (ISO 6395:2008) | measurement | 99 | dB(A) | 99 | dB(A) | |
| Note | text | European Union Directive "2000/14/EC" | ||||
| Recyclability | text | 96% | ||||
| Note | text | The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage. |
Standard Equipment
ENGINE
- Cat C2.8 Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Fit-For-Life Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC) Aftertreatment System
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Swing Brake
- Automatic Two Speed Travel
- Fuel Water Separator with Indicator
- Radial Seal – Double Element Air Filter
- Extended Life Coolant, –37° C (–35° F)
HYDRAULICS
- Electronic Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Dedicated Auxiliary Hydraulic Pump
- Power On Demand
- Hydraulic Temperature Monitoring
- Certified Accumulator
- HYDO Advanced Hydraulic Oil
- Ecology Drain
OPERATOR ENVIRONMENT
- 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
- HVAC with Automatic Temperature Control
- Hydraulic Lockout Controls
- Integrated Lower Front Window
- Assisted Front Window Overhead Storage
- Rear Window Emergency Exit
- Cab Mirrors (vary by region)
- Fabric, High Back, Suspension Seat
- Retractable Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- LED Interior Light
- Literature Holder
- Mounting Bosses for Top and Front Guards
- 12V Power Socket
- Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
- Skylight
- Signaling/Warning Horn
- Cab and (left side) Boom Work Lights
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)– Jog Dial Interface– 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
TECHNOLOGY (availability varies by region)
- Product Link™ Elite (regulations apply)
UNDERCARRIAGE
- Greased and Lubricated Track
- Tie Down Eyes on Track Frame
- Dozer Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
BOOM, STICK AND LINKAGES
- One Piece Boom (3400 mm/133.9 in)
- Standard Stick (1820 mm/71.7 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler (not available in all regions)
- Thumb Ready (not available in all regions)
ELECTRICAL
- 12 Volt Electrical System
- 60 Ampere Alternator
- Circuit Breaker
- 900 CCA Maintenance Free Battery
- Lock Out/Tag Out Battery Disconnect
- Ignition Key Stop Switch
- Travel Alarm
GUARDING
- ROPS ISO 12117-2:2008
- Top Guard ISO 10262:1998 (Level I)
OTHER
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors
Optional Equipment
HYDRAULICS
- Third Auxiliary
OPERATOR ENVIRONMENT
- Push to Start with Bluetooth® Key
- Air Suspension Heated Seat
- Seat Belt Reminder System
- 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
TECHNOLOGY (availability varies by region)
- Ease of Use Indicate
- Ease of Use E-Fence
- Ease of Use Laser Catcher
- Cat Grade Advanced 2D
- Cat Grade 3D
UNDERCARRIAGE
- Wide Dozer Blade
- Steel Tracks (450 mm/17.7 in wide)
- Wide Steel Tracks (600 mm/23.6 in)
- Steel Track with Rubber Pads
- Track Guides
BOOM, STICK AND LINKAGES
- Long Stick (2360 mm/92.9 in)
- Attachments including Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines with Case Drain
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Certified Lifting Eye
ELECTRICAL
- Rear and Side Camera
- Rotating Beacon
GUARDING
- Top Guard ISO 10262:1998 (Level II)
- Front Guard (Mesh) ISO 10262:1998 (Level I)
- Front Guard (Heavy Duty) ISO 10262:1998 (Level II)
- Track Guards
OTHER
- Counterweight (250 kg/551 lb)
- Counterweight (500 kg/1103 lb)
- Water Jacket Heater
- Refueling Pump
- Variable Angle Boom (refer to 309 CR VAB brochure for VAB specs and additional information)