New CAT Equipment

Mini Excavators 309 CR VAB

An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.
309 CR VAB

Mini Excavators 309 CR VAB

An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.
Units: USMetric

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.
Units: USMetric

Blade

Height 17 in 431 mm
Width - Wide 103.9 in 2640 mm
Width - Standard 97.2 in 2470 mm
Units: USMetric

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
Units: USMetric

Dimensions - Long Stick

Boom Swing - Right 37 in 935 mm
Boom Swing - Left 24 in 604 mm
Dig Depth 183.1 in 4650 mm
Stick Length 92.8 in 2358 mm
Maximum Reach - Ground Level 293.8 in 7462 mm
Maximum Blade Height 13.5 in 342 mm
Cab Height 99 in 2514 mm
Transport Height 99 in 2514 mm
Boom In Reach 126.6 in 3215 mm
O/A Track Width 97.2 in 2470 mm
Ground Clearance 13.5 in 343 mm
Swing Bearing - Height 28.7 in 729 mm
Tail Swing without Counterweight 57.1 in 1450 mm
Tail Swing with Counterweight 64.8 in 1645 mm
Maximum Reach 300.7 in 7637 mm
Track Belt/Shoe Width 17.7 in 450 mm
Vertical Wall 134.3 in 3411 mm
O/A Undercarriage Length 126 in 3200 mm
O/A Shipping Length 262.3 in 6662 mm
Maximum Dig Height 276.8 in 7032 mm
Maximum Dump Clearance 199.4 in 5065 mm
Maximum Blade Depth 26.9 in 684 mm
Units: USMetric

Dimensions - Standard Stick

Maximum Reach - Ground Level 273.6 in 6951 mm
Swing Bearing - Height 28.7 in 729 mm
Stick Length 71.8 in 1823 mm
O/A Shipping Length 259 in 6578 mm
Maximum Blade Height 13.5 in 342 mm
Boom In Reach 120.4 in 3058 mm
Tail Swing with Counterweight 64.8 in 1645 mm
Vertical Wall 118 in 2998 mm
Maximum Blade Depth 26.9 in 684 mm
Ground Clearance 13.5 in 343 mm
Maximum Reach 281.1 in 7140 mm
Transport Height 97.9 in 2487 mm
Cab Height 99 in 2514 mm
Boom Swing - Left 24 in 604 mm
O/A Track Width 97.2 in 2470 mm
Boom Swing - Right 37 in 935 mm
Maximum Dig Height 264.9 in 6729 mm
Tail Swing without Counterweight 57.1 in 1450 mm
Dig Depth 162 in 4115 mm
Maximum Dump Clearance 187.1 in 4753 mm
Track Belt/Shoe Width 17.7 in 450 mm
O/A Undercarriage Length 126 in 3200 mm
Units: USMetric

Dimensions - VAB In

Dig Depth 154.8 in 3931 mm
Cab Height 99 in 2514 mm
Maximum Blade Depth 26.9 in 684 mm
Maximum Blade Height 13.5 in 342 mm
Stick Length 71.8 in 1823 mm
Maximum Reach 260.3 in 6612 mm
Tail Swing without Counterweight 57.1 in 1450 mm
Vertical Wall 133.6 in 3394 mm
Swing Bearing Height 31.4 in 798 mm
Track Belt/Shoe Width 17.7 in 450 mm
Boom Swing Right 37 in 935 mm
Overall Track Width 97.2 in 2470 mm
Overall Shipping Length 227.2 in 5771 mm
Maximum Dump Clearance 143.4 in 3643 mm
Boom in Reach 112.3 in 2853 mm
Maximum Reach at Ground Level 252.1 in 6403 mm
Transport Height 99.6 in 2530 mm
Overall Undercarriage Length 126 in 3200 mm
Ground Clearance 13.5 in 343 mm
Tail Swing with Counterweight 64.8 in 1645 mm
Maximum Dig Height 216.3 in 5494 mm
Boom Swing Left 24 in 604 mm
Units: USMetric

Dimensions - VAB Out

Ground Clearance 13.5 in 343 mm
Cab Height 99 in 2514 mm
Boom in Reach 117.9 in 2995 mm
Vertical Wall 138.7 in 3524 mm
Swing Bearing Height 31.4 in 798 mm
Maximum Dump Clearance 251.6 in 6390 mm
Overall Undercarriage Length 126 in 3200 mm
Maximum Reach at Ground Level 304.4 in 7732 mm
Tail Swing without Counterweight 57.1 in 1450 mm
Maximum Reach 311 in 7900 mm
Track Belt/Shoe Width 17.7 in 450 mm
Overall Shipping Length 281.8 in 7158 mm
Maximum Blade Depth 26.9 in 684 mm
Maximum Dig Height 321.7 in 8171 mm
Overall Track Width 97.2 in 2470 mm
Tail Swing with Counterweight 64.8 in 1645 mm
Stick Length 71.8 in 1823 mm
Maximum Blade Height 13.5 in 342 mm
Boom Swing Right 37 in 935 mm
Boom Swing Left 24 in 604 mm
Transport Height 96.5 in 2452 mm
Dig Depth 136.5 in 3468 mm
Units: USMetric

Engine

Net Power 70.3 HP 52.4 kW
Engine Model Cat C3.3B
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269 71.5 HP 53.3 kW
Gross Power - ISO 14396 74.3 HP 55.4 kW
Displacement 203 in³ 3.33 l
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269 70.3 HP 52.4 kW
Stroke 4.7 in 120 mm
Bore 3.7 in 94 mm
Units: USMetric

Hydraulic System

Operating Pressure - Travel 4134 psi 285 bar
Auxiliary Circuit - Secondary - Flow 9 gal/min 33 l/min
Auxiliary Circuit - Primary (High Flow) - Pressure 4134 psi 285 bar
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard 9500 lb 42.3 kN
Auxiliary Circuit - Secondary - Pressure 4134 psi 285 bar
Digging Force - Stick - Long 8023 lb 35.7 kN
Digging Force - Bucket 13943 lb 62 kN
Pump Flow at 2,400 rpm 62 gal/min 233 l/min
Auxiliary Circuit - Primary (High Flow) - Flow 37 gal/min 140 l/min
Operating Pressure - Swing 3626 psi 250 bar
Operating Pressure - Equipment 4134 psi 285 bar
Units: USMetric

Service Refill Capacities

Fuel Tank 39 gal (US) 147 l
Hydraulic System 28 gal (US) 107 l
Engine Oil 3 gal (US) 11.2 l
Cooling System 2.6 gal (US) 10 l
Hydraulic Tank 14 gal (US) 53 l
Units: USMetric

Sound

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

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.
Units: USMetric

Swing System

Machine Swing Speed 10.6 r/min 10.6 r/min
Units: USMetric

Travel System

Ground Pressure - Minimum Weight 6 psi 38 kPa
Travel Speed - High 3.1 mile/h 4.9 km/h
Maximum Traction Force - High Speed 6497 lb 28.9 kN
Travel Speed - Low 1.6 mile/h 2.6 km/h
Ground Pressure - Maximum Weight 6 psi 40.8 kPa
Maximum Traction Force - Low Speed 19064 lb 84.8 kN
Gradeability - Maximum 30 degrees
Units: USMetric

Weight Increase from Minimum Configuration

Steel Tracks with Pads 728 lb 330 kg
Long Stick 146 lb 66 kg
Counterweight 552 lb 250 kg
Units: USMetric

Weights

Operating Weight 20731 lb 9403 kg
Note (1) *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Maximum Operating Weight with Cab* 21054 lb 9550 kg
Maximum Operating Weight with Cab** 20731 lb 9403 kg
Minimum Operating Weight with Cab* 19304 lb 8756 kg
Note *Maximum Weight is based on steel tracks with rubber pads, 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.
ENGINE
Extended Life Coolant, –37° C (–35° F)
HYDRAULICS
Case Drain Line
OPERATOR ENVIRONMENT
Rear Window Emergency Exit
UNDERCARRIAGE
Tie Down Eyes on Track Frame
BOOM, STICK AND LINKAGES
Variable Angle Boom
ELECTRICAL
12 Volt Electrical System

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