309 CR VAB

309 CR VAB Mini Hydraulic Excavator

The 309 CR VAB Mini Excavator delivers power and performance in an 8 ton size class to help you work in a wide range of applications. The Variable Angle Boom provides even greater machine versatility.

309 CR VAB Mini Hydraulic Excavator

DESCRIPTION

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 Cat® 308 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.

See the new Cat 7-10 Ton Mini Excavators in action.

Learn about the features and benefits of the new Cat 7-10 Ton Mini Excavators.

Easy to read monitor lets you adjust machine settings to your operating preference.

Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button.

Learn about the recommended Daily Maintenance and Inspection for the Cat 7 to 10 Ton Mini Excavators in this quick video.

Learn about the Safety Features on the Cat 7 to 10 Ton Mini Excavators in this quick video.

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.

308 CR VAB Mini Excavator
308 CR VAB Mini Excavator

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!

308 CR VAB Mini Excavator
308 CR VAB Mini Excavator

BIG PERFORMANCE IN A MINI DESIGN

  • Increased lifting, swinging, travel and multi-functioning performance help 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‚Äôve built into the machine.

308 CR VAB Mini Excavator
308 CR VAB Mini Excavator

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.

308 CR VAB Mini Excavator

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).
*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)

309 CR VAB Mini Excavator
  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

  • ENGINE
    • Cat C2.8 Turbo 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
    • Smart Tech Electronic Pump
    • 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
    • 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
    • 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
  • UNDERCARRIAGE
    • Tie Down Eyes on Track Frame
    • Greased and Lubricated Track
    • Hydraulic Track Adjusters
    • 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
    • Lock Out/Tag Out Battery Disconnect
    • Ignition Key Stop Switch
    • Rear Camera
  • 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
    • 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
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Attachments including Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines
    • Boom Lowering Control Valve (Standard in Europe)
    • Stick Lowering Control Valve (Standard in Europe)
    • Certified Lifting Eye
  • ELECTRICAL
    • Travel Alarm
    • 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

Specs

Overview

Long Name:
309 CR VAB Mini Hydraulic Excavator
Name:
309 CR VAB
Brand:
Cat
Status:
Current

Engine

Net Power
69 hp / 51.2 kW
Engine Model
Cat® C2.8 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
69 hp / 51.2 kW
Gross Power - ISO 14396
74.3 hp / 55.4 kW
Bore
3.5 in / 90 mm
Stroke
4.3 in / 110 mm
Displacement
171 in³ / 2.8 l
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at thetime of manufacture.
Note (2)
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.

Weights

Operating Weight
22094 lb / 10020 kg
Minimum Operating Weight with Standard Stick*
20264 lb / 9190 kg
Maximum Operating Weight with Standard Stick**
22094 lb / 10020 kg
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, (500 kg/1,103 lb) counterweight, operator, full fuel tank, standard stick, blade, and no bucket.

Weight Increase from Minimum Configuration

Counterweight
552 lb / 250 kg
Counterweight (extra)
1103 lb / 500 kg
Standard Stick
77 lb / 35 kg
Steel Tracks with Pads
728 lb / 330 kg

Travel System

Travel Speed - High
2.9 mile/h / 4.7 km/h
Travel Speed - Low
1.6 mile/h / 2.6 km/h
Maximum Traction Force - High Speed
7419 lbf / 33 kN
Maximum Traction Force - Low Speed
19064 lbf / 84.8 kN
Ground Pressure - Minimum Weight
5.2 psi / 35.6 kPa
Ground Pressure - Maximum Weight
5.6 psi / 38.9 kPa
Gradeability - Maximum
30 degrees

Blade

Height
17 in / 431 mm

Service Refill Capacities

Cooling System
2.6 gal (US) / 10 l
Engine Oil
2.3 gal (US) / 8.8 l
Fuel Tank
39 gal (US) / 147 l
Hydraulic Tank
14 gal (US) / 53 l
Hydraulic System
29 gal (US) / 110 l

Hydraulic System

Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
62 gpm / 233 L/min
Operating Pressure - Equipment
4134 psi / 285 bar
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Swing
3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
37 gpm / 140 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gpm / 33 L/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi / 285 bar
Digging Force - Stick - Standard
9509 lbf / 42.3 kN
Digging Force - Bucket
13946 lbf / 62 kN
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Swing System

Machine Swing Speed
10 r/min / 10 r/min
Boom Swing - Left
60 degrees
Boom Swing - Right
50 degrees

Blade

Width - Standard
97.2 in / 2470 mm
Width - Wide
103.9 in / 2640 mm

Certification - Cab

Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)

Dimensions - VAB In

Dig Depth
150.2 in / 3815 mm
Vertical Wall
99.2 in / 2520 mm
Maximum Reach at Ground Level
248 in / 6300 mm
Maximum Reach
256.5 in / 6515 mm
Maximum Dig Height
205.5 in / 5220 mm
Maximum Dump Clearance
135.8 in / 3450 mm
Boom in Reach
122.8 in / 3120 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
16.1 in / 408 mm
Maximum Blade Depth
19.1 in / 484 mm
Cab Height
100 in / 2541 mm
Swing Bearing Height
29.8 in / 756 mm
Overall Undercarriage Length
126 in / 3200 mm
Overall Shipping Length
255.7 in / 6495 mm
Boom Swing Right
37 in / 935 mm
Boom Swing Left
24 in / 605 mm
Track Belt/Shoe Width
17.7 in / 450 mm
Overall Track Width
97.2 in / 2470 mm
Ground Clearance
14 in / 356 mm
Stick Length
71.7 in / 1820 mm

Dimensions - VAB Out

Dig Depth
136.2 in / 3460 mm
Vertical Wall
146.7 in / 3725 mm
Maximum Reach at Ground Level
303.7 in / 7715 mm
Maximum Reach
310.4 in / 7885 mm
Maximum Dig Height
322 in / 8180 mm
Maximum Dump Clearance
247.4 in / 6285 mm
Boom in Reach
106.7 in / 2710 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
16.1 in / 408 mm
Maximum Blade Depth
19.1 in / 484 mm
Cab Height
100 in / 2541 mm
Swing Bearing Height
29.8 in / 756 mm
Overall Undercarriage Length
126 in / 3200 mm
Overall Shipping Length
255.7 in / 6495 mm
Boom Swing Right
37 in / 935 mm
Boom Swing Left
24 in / 605 mm
Track Belt/Shoe Width
17.7 in / 450 mm
Overall Track Width
97.2 in / 2470 mm
Ground Clearance
14 in / 356 mm
Stick Length
71.7 in / 1820 mm

Air Conditioning System

Air Conditioning
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 0.90 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).

Sound

Operator Sound Pressure (ISO 6396:2008)
72 dB(A) / 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) / 99 dB(A)
Note
European Union Directive "2000/14/EC"

Sustainability

Recyclability
96%

Specifications

Note
The 309 CR VAB specifications are based on a machine configured with a Long (L) Undercarriage.

SEE HOW 309 CR VAB COMPARES AGAINST FREQUENTLY COMPARED PRODUCTS.

Mini Excavators
309 CR VAB
309 CR VAB Mini Hydraulic Excavator
Brand
Cat
Status
Current
Net Power
69 hp / 51.2 kW
Bore
3.5 in / 90 mm
Stroke
4.3 in / 110 mm
Displacement
171 in³ / 2.8 l
Note
The 309 CR VAB specifications are based on a machine configured with a Long (L) Undercarriage.
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, (500 kg/1,103 lb) counterweight, operator, full fuel tank, standard stick, blade, and no bucket.
Operating Weight
22094 lb / 10020 kg
Counterweight
552 lb / 250 kg
Steel Tracks with Pads
728 lb / 330 kg
Travel Speed - High
2.9 mile/h / 4.7 km/h
Travel Speed - Low
1.6 mile/h / 2.6 km/h
Maximum Traction Force - High Speed
7419 lbf / 33 kN
Maximum Traction Force - Low Speed
19064 lbf / 84.8 kN
Ground Pressure - Minimum Weight
5.2 psi / 35.6 kPa
Ground Pressure - Maximum Weight
5.6 psi / 38.9 kPa
Gradeability - Maximum
30 degrees
Height
17 in / 431 mm
Cooling System
2.6 gal (US) / 10 l
Engine Oil
2.3 gal (US) / 8.8 l
Fuel Tank
39 gal (US) / 147 l
Hydraulic Tank
14 gal (US) / 53 l
Hydraulic System
29 gal (US) / 110 l
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
62 gpm / 233 L/min
Operating Pressure - Equipment
4134 psi / 285 bar
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Swing
3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
37 gpm / 140 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Digging Force - Stick - Standard
9509 lbf / 42.3 kN
Digging Force - Bucket
13946 lbf / 62 kN
Machine Swing Speed
10 r/min / 10 r/min
Boom Swing - Left
60 degrees
Boom Swing - Right
50 degrees
Width - Standard
97.2 in / 2470 mm
Width - Wide
103.9 in / 2640 mm
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Dig Depth
136.2 in / 3460 mm
Vertical Wall
146.7 in / 3725 mm
Maximum Reach
310.4 in / 7885 mm
Maximum Dig Height
322 in / 8180 mm
Maximum Dump Clearance
247.4 in / 6285 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
16.1 in / 408 mm
Maximum Blade Depth
19.1 in / 484 mm
Cab Height
100 in / 2541 mm
Track Belt/Shoe Width
17.7 in / 450 mm
Ground Clearance
14 in / 356 mm
Stick Length
71.7 in / 1820 mm
Air Conditioning
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 0.90 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)
72 dB(A) / 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) / 99 dB(A)
Recyclability
96%
Selected Model
Mini Excavators
309 CR
309 CR Mini Hydraulic Excavator
Brand
Cat
Status
Current
Net Power
69 hp / 51.2 kW
Bore
3.5 in / 90 mm
Stroke
4.3 in / 110 mm
Displacement
171 in³ / 2.8 l
Note
The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage.
Note (1)
**Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Note (2)
***With blade positioned at the rear of the machine.
Operating Weight
20870 lb / 9465 kg
Counterweight
552 lb / 250 kg
Steel Tracks with Pads
728 lb / 330 kg
Travel Speed - High
3.1 mile/h / 4.9 km/h
Travel Speed - Low
1.6 mile/h / 2.6 km/h
Maximum Traction Force - High Speed
6497 lb / 28.9 kN
Maximum Traction Force - Low Speed
19064 lb / 84.8 kN
Ground Pressure - Minimum Weight
5.4 psi / 37.5 kPa
Ground Pressure - Maximum Weight
6 psi / 41.4 kPa
Gradeability - Maximum
30 degrees
Height
17 in / 431 mm
Cooling System
2.6 gal (US) / 10 l
Engine Oil
2.3 gal (US) / 8.8 l
Fuel Tank
39 gal (US) / 147 l
Hydraulic Tank
14 gal (US) / 53 l
Hydraulic System
29 gal (US) / 110 l
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
62 gpm / 233 L/min
Operating Pressure - Equipment
4134 psi / 285 bar
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Swing
3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm / 131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Digging Force - Stick - Standard
9500 lb / 42.3 kN
Digging Force - Bucket
13943 lb / 62 kN
Machine Swing Speed
10 r/min / 10 r/min
Boom Swing - Left
60 degrees
Boom Swing - Right
50 degrees
Width - Standard
97 in / 2470 mm
Width - Wide
104 in / 2640 mm
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Dig Depth
182.8 in / 4642 mm
Vertical Wall
134 in / 3404 mm
Maximum Reach
300.7 in / 7637 mm
Maximum Dig Height
277.1 in / 7039 mm
Maximum Dump Clearance
199.7 in / 5072 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
16.1 in / 408 mm
Maximum Blade Depth
26 in / 671 mm
Cab Height
100 in / 2541 mm
Track Belt/Shoe Width
17.7 in / 450 mm
Ground Clearance
14 in / 356 mm
Stick Length
92.8 in / 2358 mm
Air Conditioning
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)
72 dB(A) / 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) / 99 dB(A)
Recyclability
96%
More Details
Mini Excavators
309 CR VAB (Long Undercarriage)
309 CR VAB Mini Hydraulic Excavator
Brand
Caterpillar
Status
Current
Net Power
69.5 hp / 51.8 kW
Bore
3.7 in / 94 mm
Stroke
4.7 in / 120 mm
Displacement
203 in³ / 3.33 l
Note
Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
Note (1)
*Minimum Weight is based on rubber 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, standard stick, blade and no bucket.
Operating Weight
21477 lb / 9740 kg
Counterweight
552 lb / 250 kg
Steel Tracks with Pads
728 lb / 330 kg
Travel Speed - High
3.1 mile/h / 4.9 km/h
Travel Speed - Low
1.6 mile/h / 2.6 km/h
Maximum Traction Force - High Speed
6497 lbf / 28.9 kN
Maximum Traction Force - Low Speed
19064 lbf / 84.8 kN
Ground Pressure - Minimum Weight
5.1 psi / 35.4 kPa
Ground Pressure - Maximum Weight
5.5 psi / 37.8 kPa
Gradeability - Maximum
30 degrees
Height
17 in / 431 mm
Cooling System
2.6 gal (US) / 10 l
Engine Oil
3 gal (US) / 11.2 l
Fuel Tank
39 gal (US) / 147 l
Hydraulic Tank
14 gal (US) / 53 l
Hydraulic System
29 gal (US) / 110 l
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
62 gpm / 233 L/min
Operating Pressure - Equipment
4134 psi / 285 bar
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Swing
3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm / 131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Digging Force - Stick - Standard
9509 lbf / 42.3 kN
Digging Force - Bucket
13946 lbf / 62 kN
Machine Swing Speed
10.6 r/min / 10.6 r/min
Boom Swing - Left
60 degrees
Boom Swing - Right
50 degrees
Width - Standard
97.2 in / 2470 mm
Width - Wide
103.9 in / 2640 mm
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level II)
Dig Depth
136.2 in / 3460 mm
Vertical Wall
146.7 in / 3725 mm
Maximum Reach
310.4 in / 7885 mm
Maximum Dig Height
322 in / 8180 mm
Maximum Dump Clearance
247.4 in / 6285 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
16.1 in / 408 mm
Maximum Blade Depth
19.1 in / 484 mm
Cab Height
100 in / 2541 mm
Track Belt/Shoe Width
17.7 in / 450 mm
Ground Clearance
14 in / 356 mm
Stick Length
71.7 in / 1820 mm
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.
Operator Sound Pressure (ISO 6396:2008)
72 dB(A) / 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) / 99 dB(A)
Recyclability
96%
More Details