309 CR VAB Mini Hydraulic Excavator
The Cat® 309 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.The 309 CR also features high flow hydraulics to handle power hungry attachments such as mulchers and brushcutters.
Product Images
309 CR VAB Mini Hydraulic Excavator
309 CR VAB 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
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
Specifications
| Name | Type | Value | Unit Value (Imperial) | Unit Name | Unit Value (Metric) | Unit Name (Metric) |
|---|---|---|---|---|---|---|
| Note | text | The 309 CR VAB specifications are based on a machine configured with a Long (L) Undercarriage. For specifications representing a 309 CR VAB with a Standard Undercarriage, please refer to the 308 CR information. | ||||
| Net Power | measurement | 69.5 | hp | 51.8 | kW | |
| Displacement | measurement | 203 | in³ | 3.33 | l |
Documents & Spec Sheets
309 CR VAB (Long Undercarriage) Product Brochure
Complete 309 CR VAB (Long Undercarriage) Product Brochure
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, dig-to-blade allows easy clean up and long undercarriage provides improved stability.
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.
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.
SUSTAINABILITY
- The Cat® C3.3B 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).
Complete Specifications
Specifications
| Name | Type | Value | Unit Value (Imperial) | Unit Name | Unit Value (Metric) | Unit Name (Metric) |
|---|---|---|---|---|---|---|
| Note | text | The 309 CR VAB specifications are based on a machine configured with a Long (L) Undercarriage. For specifications representing a 309 CR VAB with a Standard Undercarriage, please refer to the 308 CR information. | ||||
| Net Power | measurement | 69.5 | hp | 51.8 | kW | |
| Displacement | measurement | 203 | in³ | 3.33 | l | |
| Stroke | measurement | 4.7 | in | 120 | mm | |
| Bore | measurement | 3.7 | in | 94 | mm | |
| Operating Weight | measurement | 21477 | lb | 9740 | kg | |
| Note (1) | text | *Minimum Weight is based on rubber 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, standard stick, blade and no bucket. | ||||
| Minimum Operating Weight* | measurement | 20121 | lb | 9125 | kg | |
| Maximum Operating Weight* | measurement | 21477 | lb | 9740 | kg | |
| Steel Tracks with Pads | measurement | 728 | lb | 330 | kg | |
| Counterweight | measurement | 552 | lb | 250 | kg | |
| Standard Stick | measurement | 77 | lb | 35 | kg | |
| Ground Pressure - Minimum Weight | measurement | 5.1 | psi | 35.4 | kPa | |
| Travel Speed - High | measurement | 3.1 | mile/h | 4.9 | km/h | |
| Maximum Traction Force - High Speed | measurement | 6497 | lbf | 28.9 | kN | |
| Travel Speed - Low | measurement | 1.6 | mile/h | 2.6 | km/h | |
| Ground Pressure - Maximum Weight | measurement | 5.5 | psi | 37.8 | kPa | |
| Maximum Traction Force - Low Speed | measurement | 19064 | lbf | 84.8 | kN | |
| Gradeability - Maximum | text | 30 degrees | ||||
| Fuel Tank | measurement | 39 | gal (US) | 147 | l | |
| Hydraulic System | measurement | 29 | gal (US) | 110 | l | |
| Engine Oil | measurement | 3 | gal (US) | 11.2 | l | |
| Cooling System | measurement | 2.6 | gal (US) | 10 | l | |
| Hydraulic Tank | measurement | 14 | gal (US) | 53 | l | |
| Operating Pressure - Travel | measurement | 4134 | psi | 285 | bar | |
| Type | text | Load Sensing Hydraulics with Variable Displacement Piston Pump | ||||
| Digging Force - Stick - Standard | measurement | 9509 | lbf | 42.3 | kN | |
| Digging Force - Bucket | measurement | 13946 | lbf | 62 | kN | |
| Pump Flow at 2,400 rpm | measurement | 62 | gpm | 233 | L/min | |
| Operating Pressure - Swing | measurement | 3626 | psi | 250 | bar | |
| Note | text | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. | ||||
| Operating Pressure - Equipment | measurement | 4134 | psi | 285 | bar | |
| Maximum Auxiliary Circuit - Secondary - Flow at Pump | measurement | 9 | gpm | 33 | L/min | |
| Maximum Auxiliary Circuit - Secondary - Pressure at Pump | measurement | 4134 | psi | 285 | 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 - Primary (High Flow) - Pressure at Pump | measurement | 4134 | psi | 285 | bar | |
| Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump | measurement | 37 | gpm | 140 | L/min | |
| Machine Swing Speed | measurement | 10.6 | r/min | 10.6 | r/min | |
| Boom Swing - Left | text | 60 degrees | ||||
| Boom Swing - Right | text | 50 degrees | ||||
| Height | measurement | 17 | in | 431 | mm | |
| Width - Wide | measurement | 103.9 | in | 2640 | mm | |
| Width - Standard | measurement | 97.2 | in | 2470 | mm | |
| Top Guard | text | ISO 10262:1998 (Level II) | ||||
| Roll Over Protective Structure (ROPS) | text | ISO 12117-2:2008 | ||||
| Tip Over Protective Structure (TOPS) | text | ISO 12117:1997 | ||||
| Average Exterior Sound Pressure (ISO 6395:2008) | measurement | 99 | dB(A) | 99 | dB(A) | |
| Operator Sound Pressure (ISO 6396:2008) | measurement | 72 | dB(A) | 72 | dB(A) | |
| Note | text | European Union Directive "2000/14/EC" | ||||
| Dig Depth | measurement | 150.2 | in | 3815 | mm | |
| Air Conditioning | text | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes. | ||||
| Cab Height | measurement | 100 | in | 2541 | mm | |
| Maximum Blade Depth | measurement | 19.1 | in | 484 | mm | |
| Maximum Blade Height | measurement | 16.1 | in | 408 | mm | |
| Stick Length | measurement | 71.7 | in | 1820 | mm | |
| Maximum Reach | measurement | 256.5 | in | 6515 | mm | |
| Tail Swing without Counterweight | measurement | 57.1 | in | 1450 | mm | |
| Vertical Wall | measurement | 99.2 | in | 2520 | mm | |
| Swing Bearing Height | measurement | 29.8 | in | 756 | mm | |
| Track Belt/Shoe Width | measurement | 17.7 | in | 450 | mm | |
| Boom Swing Right | measurement | 37 | in | 935 | mm | |
| Overall Track Width | measurement | 97.2 | in | 2470 | mm | |
| Overall Shipping Length | measurement | 255.7 | in | 6495 | mm | |
| Maximum Dump Clearance | measurement | 135.8 | in | 3450 | mm | |
| Boom in Reach | measurement | 122.8 | in | 3120 | mm | |
| Maximum Reach at Ground Level | measurement | 248 | in | 6300 | mm | |
| Transport Height | measurement | 97.4 | in | 2475 | mm | |
| Overall Undercarriage Length | measurement | 126 | in | 3200 | mm | |
| Ground Clearance | measurement | 14 | in | 356 | mm | |
| Tail Swing with Counterweight | measurement | 62.4 | in | 1585 | mm | |
| Maximum Dig Height | measurement | 205.5 | in | 5220 | mm | |
| Boom Swing Left | measurement | 24 | in | 605 | mm | |
| Maximum Blade Depth | measurement | 19.1 | in | 484 | mm | |
| Maximum Dig Height | measurement | 322 | in | 8180 | mm | |
| Overall Track Width | measurement | 97.2 | in | 2470 | mm | |
| Tail Swing with Counterweight | measurement | 62.4 | in | 1585 | mm | |
| Stick Length | measurement | 71.7 | in | 1820 | mm | |
| Maximum Blade Height | measurement | 16.1 | in | 408 | mm | |
| Boom Swing Right | measurement | 37 | in | 935 | mm | |
| Boom Swing Left | measurement | 24 | in | 605 | mm | |
| Transport Height | measurement | 97.4 | in | 2475 | mm | |
| Dig Depth | measurement | 136.2 | in | 3460 | mm | |
| Ground Clearance | measurement | 14 | in | 356 | mm | |
| Cab Height | measurement | 100 | in | 2541 | mm | |
| Boom in Reach | measurement | 106.7 | in | 2710 | mm | |
| Vertical Wall | measurement | 146.7 | in | 3725 | mm | |
| Swing Bearing Height | measurement | 29.8 | in | 756 | mm | |
| Maximum Dump Clearance | measurement | 247.4 | in | 6285 | mm | |
| Overall Undercarriage Length | measurement | 126 | in | 3200 | mm | |
| Maximum Reach at Ground Level | measurement | 303.7 | in | 7715 | mm | |
| Tail Swing without Counterweight | measurement | 57.1 | in | 1450 | mm | |
| Maximum Reach | measurement | 310.4 | in | 7885 | mm | |
| Track Belt/Shoe Width | measurement | 17.7 | in | 450 | mm | |
| Overall Shipping Length | measurement | 255.7 | in | 6495 | mm | |
| Gross Power - SAE J1995:2014 | measurement | 74.3 | hp | 55.4 | kW | |
| Note | text | Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan. | ||||
| Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC | measurement | 69.5 | hp | 51.8 | kW | |
| Engine Model - U.S. EPA Tier 4 Final/EU Stage V | text | Cat C3.3B | ||||
| Recyclability | text | 96% |
Standard Equipment
ENGINE
- Cat C3.3 Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
- 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)
- Ecology Drain
HYDRAULICS
- Smart Tech Electronic Pump
- Electronic Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Power On Demand
- Hydraulic Temperature Monitoring
- Certified Accumulator
- HYDO Advanced Hydraulic Oil
- Dedicated Auxiliary Hydraulic Pump
OPERATOR ENVIRONMENT
- Top Guard ISO 10262 1998 Level I
- ROPS ISO 12117-2:2008
- Sealed and Pressurized Cab
- 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
- 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
UNDERCARRIAGE
- Greased and Lubricated Track
- Hydraulic Track Adjusters
- Tie Down Eyes on Track Frame
- Dozer Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
BOOM, STICK AND LINKAGES
- Variable Angle Boom
- 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
- 90 Ampere Alternator
- Circuit Breaker
- 850 CCA Maintenance Free Battery
- Battery Disconnect
- Ignition Key Stop Switch
OTHER
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors
Optional Equipment
OPERATOR ENVIRONMENT
- Push to Start with Bluetooth® Key
- Air Suspension Heated Seat
- 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
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
- 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)
- Travel Alarm
- Rearview Camera
- Rotating Beacon
GUARDING
- Mesh Front Guard ISO 10262 1998 Level I
- Heavy Duty Front Guard ISO 10262 1998 Level II
- Overhead Cab Guard ISO 10262 1998 Level II
- Polycarbonate Front Window EN356 P5A
- Track Guards
OTHER
- Additional Counterweight
- Water Jacket Heater
- Refueling Pump