309 CR

309 CR
Cat
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The Cat® 309 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.The 309 CR also features high flow hydraulics to handle power hungry attachments such as mulchers and brushcutters.
The Cat® 309 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

Brochures and Spec Sheets

Gallery

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Specifications

Specification Value Unit
Net Power 69 hp
Engine Model
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 69 hp
Gross Power - ISO 14396 55.4 kW
Bore 3.5 in
Stroke 4.3 in
Displacement 171 in³
Note
Note (1)
Note (2)
Operating Weight 20870 lb
Minimum Operating Weight with Cab* 18886 lb
Maximum Operating Weight with Cab** 20870 lb
Note (1)
Note (2)
Counterweight 552 lb
Long Stick 146 lb
Steel Tracks with Pads 728 lb
Travel Speed - High 3.1 mile/h
Travel Speed - Low 1.6 mile/h
Maximum Traction Force - High Speed 6497 lbf
Maximum Traction Force - Low Speed 19064 lbf
Ground Pressure - Minimum Weight 5.4 psi
Ground Pressure - Maximum Weight 6 psi
Gradeability - Maximum
Cooling System 2.6 gal (US)
Engine Oil 2.3 gal (US)
Fuel Tank 39 gal (US)
Hydraulic Tank 14 gal (US)
Hydraulic System 29 gal (US)
Type
Pump Flow at 2,400 rpm 62 gpm
Operating Pressure - Equipment 4134 psi
Operating Pressure - Travel 4134 psi
Operating Pressure - Swing 3626 psi
Maximum Auxiliary Circuit - Primary - Flow at Pump 35 gpm
Maximum Auxiliary Circuit - Primary - Pressure at Pump 4134 psi
Maximum Auxiliary Circuit - High Flow - Flow at Pump 37 gpm
Maximum Auxiliary Circuit - High Flow - Pressure at Pump 4134 lbf/in
Digging Force - Stick - Standard 9500 lbf
Digging Force - Stick - Long 8023 lbf
Digging Force - Bucket 13943 lbf
Note
Machine Swing Speed 10 r/min
Boom Swing - Left
Boom Swing - Right
Width - Standard 97 in
Width - Wide 104 in
Height 17 in
Roll Over Protective Structure (ROPS)
Top Guard
Dig Depth 161.7 in
Vertical Wall 117.8 in
Maximum Reach - Ground Level 273.6 in
Maximum Reach 281.1 in
Maximum Dig Height 265.2 in
Maximum Dump Clearance 187.4 in
Boom In Reach 120.4 in
Tail Swing with Counterweight 62.4 in
Tail Swing without Counterweight 57.1 in
Maximum Blade Height 16.1 in
Maximum Blade Depth 26 in
Height - Boom Transport - No Tools* 95.7 in
Height - Boom Working - With Tools** 104.7 in
Cab Height 100 in
Swing Bearing - Height 29.7 in
O/A Undercarriage Length 126 in
Overall Shipping Length - with Counterweight 266.7 in
Overall Shipping Length - without Counterweight 266.7 in
Track Belt/Shoe Width 17.7 in
O/A Track Width 97.2 in
Ground Clearance 14 in
Stick Length 71.8 in
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Note (1)
Note (2)
Dig Depth 182.8 in
Vertical Wall 134 in
Maximum Reach - Ground Level 293.7 in
Maximum Reach 300.7 in
Maximum Dig Height 277.1 in
Maximum Dump Clearance 199.7 in
Boom In Reach 126.6 in
Tail Swing with Counterweight 62.4 in
Tail Swing without Counterweight 57.1 in
Maximum Blade Height 16.1 in
Maximum Blade Depth 26 in
Height - Boom Transport - No Tools* 89 in
Height - Boom Working - With Tools** 120.1 in
Cab Height 100 in
Swing Bearing - Height 29.7 in
O/A Undercarriage Length 126 in
Overall Shipping Length - with Counterweight
Overall Shipping Length - without Counterweight
Track Belt/Shoe Width 17.7 in
O/A Track Width 97.2 in
Ground Clearance 14 in
Stick Length 92.8 in
Note
Note (1)
Note (2)
Air Conditioning
Operator Sound Pressure (ISO 6396:2008) 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008) 99 dB(A)
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Recyclability
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Standard Equipment

  • ENGINE
  • HYDRAULICS
  • OPERATOR ENVIRONMENT
  • TECHNOLOGY (availability varies by region)
  • UNDERCARRIAGE
  • BOOM, STICK AND LINKAGES
  • ELECTRICAL
  • GUARDING
  • OTHER

Optional Equipment

  • HYDRAULICS
  • OPERATOR ENVIRONMENT
  • TECHNOLOGY (availability varies by region)
  • UNDERCARRIAGE
  • BOOM, STICK AND LINKAGES
  • ELECTRICAL
  • GUARDING
  • OTHER