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.
| 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 |
| Width - Standard | 97.2 in / 2470 mm |
| Width - Wide | 103.9 in / 2640 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 |
| Boom Swing - Left | 60 degrees |
| Boom Swing - Right | 50 degrees |
| 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) |
| Average Exterior Sound Pressure (ISO 6395:2008) | 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. |
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