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 ...
Engine
- Net Power
- 70.3HP
- Engine Model
- Cat C3.3B
- Bore
- 3.7in
- Displacement
- 203in³
- Gross Power - ISO 14396
- 74.3HP
- Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
- 71.5HP
- Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
- 70.3HP
- Stroke
- 4.7in
Weights
- Operating Weight
- 20731lb
- Maximum Operating Weight with Cab*
- 21054lb
- Maximum Operating Weight with Cab**
- 20731lb
- Minimum Operating Weight with Cab*
- 19304lb
- Note
- *Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, standard stick, blade and no bucket.
- Note (1)
- *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
- Note (2)
- **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Dimensions - VAB In
- Dig Depth
- 154.8in
- Boom Swing Left
- 24in
- Boom Swing Right
- 37in
- Boom in Reach
- 112.3in
- Cab Height
- 99in
- Ground Clearance
- 13.5in
- Maximum Blade Depth
- 26.9in
- Maximum Blade Height
- 13.5in
- Maximum Dig Height
- 216.3in
- Maximum Dump Clearance
- 143.4in
- Maximum Reach
- 260.3in
- Maximum Reach at Ground Level
- 252.1in
- Overall Shipping Length
- 227.2in
- Overall Track Width
- 97.2in
- Overall Undercarriage Length
- 126in
- Stick Length
- 71.8in
- Swing Bearing Height
- 31.4in
- Tail Swing with Counterweight
- 64.8in
- Tail Swing without Counterweight
- 57.1in
- Track Belt/Shoe Width
- 17.7in
- Transport Height
- 99.6in
- Vertical Wall
- 133.6in
Blade
- Height
- 17in
- Width - Standard
- 97.2in
- Width - Wide
- 103.9in
Air Conditioning System
- Air Conditioning
- 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.
Certification - Cab
- Roll Over Protective Structure (ROPS)
- ISO 12117-2:2008
- Tip Over Protective Structure (TOPS)
- ISO 12117:1997
- Top Guard
- ISO 10262:1998 (Level II)
Dimensions - Long Stick
- Boom In Reach
- 126.6in
- Boom Swing - Left
- 24in
- Boom Swing - Right
- 37in
- Cab Height
- 99in
- Dig Depth
- 183.1in
- Ground Clearance
- 13.5in
- Maximum Blade Depth
- 26.9in
- Maximum Blade Height
- 13.5in
- Maximum Dig Height
- 276.8in
- Maximum Dump Clearance
- 199.4in
- Maximum Reach
- 300.7in
- Maximum Reach - Ground Level
- 293.8in
- O/A Shipping Length
- 262.3in
- O/A Track Width
- 97.2in
- O/A Undercarriage Length
- 126in
- Stick Length
- 92.8in
- Swing Bearing - Height
- 28.7in
- Tail Swing with Counterweight
- 64.8in
- Tail Swing without Counterweight
- 57.1in
- Track Belt/Shoe Width
- 17.7in
- Transport Height
- 99in
- Vertical Wall
- 134.3in
Dimensions - Standard Stick
- Boom In Reach
- 120.4in
- Boom Swing - Left
- 24in
- Boom Swing - Right
- 37in
- Cab Height
- 99in
- Dig Depth
- 162in
- Ground Clearance
- 13.5in
- Maximum Blade Depth
- 26.9in
- Maximum Blade Height
- 13.5in
- Maximum Dig Height
- 264.9in
- Maximum Dump Clearance
- 187.1in
- Maximum Reach
- 281.1in
- Maximum Reach - Ground Level
- 273.6in
- O/A Shipping Length
- 259in
- O/A Track Width
- 97.2in
- O/A Undercarriage Length
- 126in
- Stick Length
- 71.8in
- Swing Bearing - Height
- 28.7in
- Tail Swing with Counterweight
- 64.8in
- Tail Swing without Counterweight
- 57.1in
- Track Belt/Shoe Width
- 17.7in
- Transport Height
- 97.9in
- Vertical Wall
- 118in
Dimensions - VAB Out
- Boom Swing Left
- 24in
- Boom Swing Right
- 37in
- Boom in Reach
- 117.9in
- Cab Height
- 99in
- Dig Depth
- 136.5in
- Ground Clearance
- 13.5in
- Maximum Blade Depth
- 26.9in
- Maximum Blade Height
- 13.5in
- Maximum Dig Height
- 321.7in
- Maximum Dump Clearance
- 251.6in
- Maximum Reach
- 311in
- Maximum Reach at Ground Level
- 304.4in
- Overall Shipping Length
- 281.8in
- Overall Track Width
- 97.2in
- Overall Undercarriage Length
- 126in
- Stick Length
- 71.8in
- Swing Bearing Height
- 31.4in
- Tail Swing with Counterweight
- 64.8in
- Tail Swing without Counterweight
- 57.1in
- Track Belt/Shoe Width
- 17.7in
- Transport Height
- 96.5in
- Vertical Wall
- 138.7in
Hydraulic System
- Auxiliary Circuit - Primary (High Flow) - Flow
- 37gal/min
- Auxiliary Circuit - Primary (High Flow) - Pressure
- 4134psi
- Auxiliary Circuit - Secondary - Flow
- 9gal/min
- Auxiliary Circuit - Secondary - Pressure
- 4134psi
- Digging Force - Bucket
- 13943lb
- Digging Force - Stick - Long
- 8023lb
- Digging Force - Stick - Standard
- 9500lb
- Operating Pressure - Equipment
- 4134psi
- Operating Pressure - Swing
- 3626psi
- Operating Pressure - Travel
- 4134psi
- Pump Flow at 2,400 rpm
- 62gal/min
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
Service Refill Capacities
- Cooling System
- 2.6gal (US)
- Engine Oil
- 3gal (US)
- Fuel Tank
- 39gal (US)
- Hydraulic System
- 28gal (US)
- Hydraulic Tank
- 14gal (US)
Sound
- Average Exterior Sound Pressure (ISO 6395:2008)
- 99dB(A)
- Note
- European Union Directive “2000/14/EC”
- Operator Sound Pressure (ISO 6396:2008)
- 72dB(A)
Specifications
- Note
- The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage. For specifications representing a 309 CR with a Standard Undercarriage, please refer to the 308 CR information.
Swing System
- Machine Swing Speed
- 10.6r/min
Travel System
- Gradeability - Maximum
- 30 degrees
- Ground Pressure - Maximum Weight
- 6psi
- Ground Pressure - Minimum Weight
- 6psi
- Maximum Traction Force - High Speed
- 6497lb
- Maximum Traction Force - Low Speed
- 19064lb
- Travel Speed - High
- 3.1mile/h
- Travel Speed - Low
- 1.6mile/h
Weight Increase from Minimum Configuration
- Counterweight
- 552lb
- Long Stick
- 146lb
- Steel Tracks with Pads
- 728lb
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, and dig-to-blade allows for easy clean up.
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.
