At a glance data:
Overview
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.
Specifications
Note:
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.
Engine
Net Power:
69.5hp
Displacement:
203in³
Stroke:
4.7in
Bore:
3.7in
Weights
Operating Weight:
21477lb
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.
Minimum Operating Weight*:
20121lb
Maximum Operating Weight*:
21477lb
Weight Increase from Minimum Configuration
Steel Tracks with Pads:
728lb
Counterweight:
552lb
Standard Stick:
77lb
Travel System
Ground Pressure - Minimum Weight:
5.1psi
Travel Speed - High:
3.1mile/h
Maximum Traction Force - High Speed:
6497lbf
Travel Speed - Low:
1.6mile/h
Ground Pressure - Maximum Weight:
5.5psi
Maximum Traction Force - Low Speed:
19064lbf
Gradeability - Maximum:
30 degrees
Service Refill Capacities
Fuel Tank:
39gal (US)
Hydraulic System:
29gal (US)
Engine Oil:
3gal (US)
Cooling System:
2.6gal (US)
Hydraulic Tank:
14gal (US)
Hydraulic System
Operating Pressure - Travel:
4134psi
Type:
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard:
9509lbf
Digging Force - Bucket:
13946lbf
Pump Flow at 2,400 rpm:
62gal/min
Operating Pressure - Swing:
3626psi
Note:
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment:
4134psi
Maximum Auxiliary Circuit - Secondary - Flow at Pump:
9gal/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump:
4134psi
Maximum Auxiliary Circuit - Primary - Flow at Pump:
35gal/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump:
4134psi
Maximum Auxiliary Circuit - Primary (High Flow) - Pressure at Pump:
4134psi
Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump:
37gal/min
Swing System
Machine Swing Speed:
10.6r/min
Boom Swing - Left:
60 degrees
Boom Swing - Right:
50 degrees
Blade
Height:
17in
Width - Wide:
103.9in
Width - Standard:
97.2in
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
Average Exterior Sound Pressure (ISO 6395:2008):
99dB(A)
Operator Sound Pressure (ISO 6396:2008):
72dB(A)
Note:
European Union Directive "2000/14/EC"
Dimensions - VAB In
Dig Depth:
150.2in
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.
Dimensions - VAB In
Cab Height:
100in
Maximum Blade Depth:
19.1in
Maximum Blade Height:
16.1in
Stick Length:
71.7in
Maximum Reach:
256.5in
Tail Swing without Counterweight:
57.1in
Vertical Wall:
99.2in
Swing Bearing Height:
29.8in
Track Belt/Shoe Width:
17.7in
Boom Swing Right:
37in
Overall Track Width:
97.2in
Overall Shipping Length:
255.7in
Maximum Dump Clearance:
135.8in
Boom in Reach:
122.8in
Maximum Reach at Ground Level:
248in
Transport Height:
97.4in
Overall Undercarriage Length:
126in
Ground Clearance:
14in
Tail Swing with Counterweight:
62.4in
Maximum Dig Height:
205.5in
Boom Swing Left:
24in
Dimensions - VAB Out
Ground Clearance:
14in
Cab Height:
100in
Boom in Reach:
106.7in
Vertical Wall:
146.7in
Swing Bearing Height:
29.8in
Maximum Dump Clearance:
247.4in
Overall Undercarriage Length:
126in
Maximum Reach at Ground Level:
303.7in
Tail Swing without Counterweight:
57.1in
Maximum Reach:
310.4in
Track Belt/Shoe Width:
17.7in
Overall Shipping Length:
255.7in
Maximum Blade Depth:
19.1in
Maximum Dig Height:
322in
Overall Track Width:
97.2in
Tail Swing with Counterweight:
62.4in
Stick Length:
71.7in
Maximum Blade Height:
16.1in
Boom Swing Right:
37in
Boom Swing Left:
24in
Transport Height:
97.4in
Dig Depth:
136.2in
Engine
Gross Power - SAE J1995:
74.3hp
Note:
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:
69.5hp
Engine Model - U.S. EPA Tier 4 Final/EU Stage V:
Cat C3.3B
Sustainability
Recyclability:
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
