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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.

Operating Weight 9740 kg
Maximum Operating Weight* 9740 kg
Minimum Operating Weight* 9125 kg
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.

Dig Depth 3815 mm
Boom in Reach 3120 mm
Boom Swing Left 605 mm
Boom Swing Right 935 mm
Cab Height 2541 mm
Ground Clearance 356 mm
Maximum Blade Depth 484 mm
Maximum Blade Height 408 mm
Maximum Dig Height 5220 mm
Maximum Dump Clearance 3450 mm
Maximum Reach 6515 mm
Maximum Reach at Ground Level 6300 mm
Overall Shipping Length 6495 mm
Overall Track Width 2470 mm
Overall Undercarriage Length 3200 mm
Stick Length 1820 mm
Swing Bearing Height 756 mm
Tail Swing with Counterweight 1585 mm
Tail Swing without Counterweight 1450 mm
Track Belt/Shoe Width 450 mm
Transport Height 2475 mm
Vertical Wall 2520 mm

Net Power 51.8 kW
Bore 94 mm
Stroke 120 mm
Displacement 3.33 l
Engine Model - U.S. EPA Tier 4 Final/EU Stage V Cat C3.3B
Gross Power - SAE J1995 55.4 kW
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC 51.8 kW
Note Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.

Height 431 mm
Width - Standard 2470 mm
Width - Wide 2640 mm

Fuel Tank 147 l
Cooling System 10 l
Engine Oil 11.2 l
Hydraulic System 110 l
Hydraulic Tank 53 l

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.

Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Top Guard ISO 10262:1998 (Level II)

Boom in Reach 2710 mm
Boom Swing Left 605 mm
Boom Swing Right 935 mm
Cab Height 2541 mm
Dig Depth 3460 mm
Ground Clearance 356 mm
Maximum Blade Depth 484 mm
Maximum Blade Height 408 mm
Maximum Dig Height 8180 mm
Maximum Dump Clearance 6285 mm
Maximum Reach 7885 mm
Maximum Reach at Ground Level 7715 mm
Overall Shipping Length 6495 mm
Overall Track Width 2470 mm
Overall Undercarriage Length 3200 mm
Stick Length 1820 mm
Swing Bearing Height 756 mm
Tail Swing with Counterweight 1585 mm
Tail Swing without Counterweight 1450 mm
Track Belt/Shoe Width 450 mm
Transport Height 2475 mm
Vertical Wall 3725 mm

Digging Force - Bucket 62 kN
Digging Force - Stick - Standard 42.3 kN
Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump 140 l/min
Maximum Auxiliary Circuit - Primary (High Flow) - Pressure at Pump 285 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump 131 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump 285 bar
Maximum Auxiliary Circuit - Secondary - Flow at Pump 33 l/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 285 bar
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment 285 bar
Operating Pressure - Swing 250 bar
Operating Pressure - Travel 285 bar
Pump Flow at 2,400 rpm 233 l/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump

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

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.

Boom Swing - Left 60 degrees
Boom Swing - Right 50 degrees
Machine Swing Speed 10.6 r/min

Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 37.8 kPa
Ground Pressure - Minimum Weight 35.4 kPa
Maximum Traction Force - High Speed 28.9 kN
Maximum Traction Force - Low Speed 84.8 kN
Travel Speed - High 4.9 km/h
Travel Speed - Low 2.6 km/h

Counterweight 250 kg
Standard Stick 35 kg
Steel Tracks with Pads 330 kg

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