Specification sheet Mini Excavator Ref caterpillar-309-cr-mini-excavator

Caterpillar 309 CR

The Caterpillar 309 CR is a mini excavator with an operating weight of 20,731 lb, a 70.3 hp engine, and a dig depth of 15.26 ft.

✓ QA-verified — every figure checked for physical possibility and class plausibility; failures withheld →
Operating weight
20,731lb
 
Engine power
70.3hp
 
Net Power
Dig depth
15.26ft
 

◆Where it sits in its classpercentile · mini excavators

Among 479 mini excavators , the Caterpillar 309 CR sits at the heavy end of its class:

  • Operating weight 20,730 lb heavier than 98% (n=438)
  • Engine power 70 hp more powerful than 98% (n=448)
  • Dig depth 15.3 ft deeper-digging than 99% (n=426)

01 Dimensions - Long Stick Specification

Ground Clearance 13.5in 343mm‖ — metric converted from the published imperial value
Boom In Reach 126.6in 3,216mm‖ — metric converted from the published imperial value
Boom Swing - Left 24in 610mm‖ — metric converted from the published imperial value
Boom Swing - Right 37in 940mm‖ — metric converted from the published imperial value
Vertical Wall 134.31in 3,411.5mm‖ — metric converted from the published imperial value
Cab Height 99in 2,515mm‖ — metric converted from the published imperial value
Dig Depth 183.1in 4,651mm‖ — metric converted from the published imperial value
Maximum Blade Depth 26.9in 683mm‖ — metric converted from the published imperial value
Maximum Blade Height 13.5in 343mm‖ — metric converted from the published imperial value
Maximum Dig Height 276.8in 7,031mm‖ — metric converted from the published imperial value
Maximum Dump Clearance 199.4in 5,065mm‖ — metric converted from the published imperial value
Maximum Reach 300.7in 7,638mm‖ — metric converted from the published imperial value
Maximum Reach - Ground Level 293.8in 7,463mm‖ — metric converted from the published imperial value
O/A Shipping Length 262.3in 6,662mm‖ — metric converted from the published imperial value
O/A Track Width 97.2in 2,469mm‖ — metric converted from the published imperial value
O/A Undercarriage Length 126in 3,200mm‖ — metric converted from the published imperial value
Stick Length 92.8in 2,357mm‖ — metric converted from the published imperial value
Swing Bearing - Height 28.7in 729mm‖ — metric converted from the published imperial value
Tail Swing With Counterweight 64.8in 1,646mm‖ — metric converted from the published imperial value
Tail Swing Without Counterweight 57.1in 1,450mm‖ — metric converted from the published imperial value
Track Belt/Shoe Width 17.7in 450mm‖ — metric converted from the published imperial value
Transport Height 99in 2,515mm‖ — metric converted from the published imperial value

02 Dimensions - Standard Stick Specification

Ground Clearance 13.5in 343mm‖ — metric converted from the published imperial value
Tail Swing With Counterweight 64.8in 1,646mm‖ — metric converted from the published imperial value
O/A Shipping Length 259in 6,579mm‖ — metric converted from the published imperial value
Transport Height 97.9in 2,487mm‖ — metric converted from the published imperial value
O/A Track Width 97.2in 2,469mm‖ — metric converted from the published imperial value
Boom Swing - Right 37in 940mm‖ — metric converted from the published imperial value
Cab Height 99in 2,515mm‖ — metric converted from the published imperial value
Tail Swing Without Counterweight 57.1in 1,450mm‖ — metric converted from the published imperial value
Dig Depth 162in 4,115mm‖ — metric converted from the published imperial value
Boom In Reach 120.4in 3,058mm‖ — metric converted from the published imperial value
Boom Swing - Left 24in 610mm‖ — metric converted from the published imperial value
Maximum Blade Depth 26.9in 683mm‖ — metric converted from the published imperial value
O/A Undercarriage Length 126in 3,200mm‖ — metric converted from the published imperial value
Maximum Blade Height 13.5in 343mm‖ — metric converted from the published imperial value
Stick Length 71.8in 1,824mm‖ — metric converted from the published imperial value
Maximum Dig Height 264.9in 6,728mm‖ — metric converted from the published imperial value
Vertical Wall 118in 2,997mm‖ — metric converted from the published imperial value
Maximum Dump Clearance 187.1in 4,752mm‖ — metric converted from the published imperial value
Swing Bearing - Height 28.7in 729mm‖ — metric converted from the published imperial value
Track Belt/Shoe Width 17.7in 450mm‖ — metric converted from the published imperial value
Maximum Reach - Ground Level 273.61in 6,949.7mm‖ — metric converted from the published imperial value
Maximum Reach 281.11in 7,140.2mm‖ — metric converted from the published imperial value

03 Swing System Specification

Machine Swing Speed 10.6rpm

04 Engine Specification

Net Power 70.3hp 52.4kw‖ — metric converted from the published imperial value
Displacement 203cu in 3,327cm3‖ — metric converted from the published imperial value
Bore 3.7in 94mm‖ — metric converted from the published imperial value
Stroke 4.7in 119mm‖ — metric converted from the published imperial value
Engine Model Cat C3.3B
Gross Power - Iso 14396 74.3hp 55.4kw‖ — metric converted from the published imperial value
Rated Net Power - 2,200 Rpm - U.S. Epa Tier 4 Final - Iso 9249/Eec 80/1269 70.3hp 52.4kw‖ — metric converted from the published imperial value
Rated Net Power - 2,200 Rpm - Eu Stage V - Iso 9249/Eec 80/1269 71.5hp 53.3kw‖ — metric converted from the published imperial value

05 Weights Specification

Operating Weight 20731lb 9,403.4kg‖ — metric converted from the published imperial value
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, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Minimum Operating Weight With Cab* 19304lb 8,756.1kg‖ — metric converted from the published imperial value
Maximum Operating Weight With Cab** 20731lb 9,403.4kg‖ — metric converted from the published imperial value

06 Blade Specification

Height 17in 432mm‖ — metric converted from the published imperial value

07 Hydraulic System Specification

Hydraulic System Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing 3626psi 25,000kpa‖ — metric converted from the published imperial value
Operating Pressure - Equipment 4134psi 28,503kpa‖ — metric converted from the published imperial value
Operating Pressure - Travel 4134psi 28,503kpa‖ — metric converted from the published imperial value
Digging Force - Stick - Standard 9500lb 4,309kg‖ — metric converted from the published imperial value
Digging Force - Stick - Long 8023lb 3,639kg‖ — metric converted from the published imperial value
Digging Force - Bucket 13943lb 6,324.4kg‖ — metric converted from the published imperial value
Pump Flow At 2,400 Rpm 62gal/min 235l/min‖ — metric converted from the published imperial value
Auxiliary Circuit - Secondary - Flow 9gal/min 34l/min‖ — metric converted from the published imperial value
Auxiliary Circuit - Secondary - Pressure 4134psi 28,503kpa‖ — metric converted from the published imperial value

08 Blade Specification

Width - Standard 97.2in 2,469mm‖ — metric converted from the published imperial value
Width - Wide 103.9in 2,639mm‖ — metric converted from the published imperial value

09 Hydraulic System Specification

Auxiliary Circuit - Primary (High Flow) - Flow 37gal/min 140l/min‖ — metric converted from the published imperial value
Auxiliary Circuit - Primary (High Flow) - Pressure 4134psi 28,503kpa‖ — metric converted from the published imperial value

10 Service Refill Capacities Specification

Cooling System 2.6gal 9.8l‖ — metric converted from the published imperial value
Fuel Tank 39gal 148l‖ — metric converted from the published imperial value
Hydraulic Tank 14gal 53l‖ — metric converted from the published imperial value
Hydraulic System 28gal 106l‖ — metric converted from the published imperial value
Engine Oil 3gal 11l‖ — metric converted from the published imperial value

11 Sound Specification

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

12 Air Conditioning System Specification

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.

13 Specifications Specification

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.

14 Travel System Specification

Maximum Traction Force - High Speed 6497lb 2,947kg‖ — metric converted from the published imperial value
Maximum Traction Force - Low Speed 19064lb 8,647.3kg‖ — metric converted from the published imperial value
Travel Speed - High 3.1mph 5km/h‖ — metric converted from the published imperial value
Travel Speed - Low 1.6mph 2.6km/h‖ — metric converted from the published imperial value
Gradeability - Maximum 30degrees
Ground Pressure - Minimum Weight 6psi 41kpa‖ — metric converted from the published imperial value
Ground Pressure - Maximum Weight 6psi 41kpa‖ — metric converted from the published imperial value

15 Weight Increase From Minimum Configuration Specification

Long Stick 146lb 66.2kg‖ — metric converted from the published imperial value
Counterweight 552lb 250kg‖ — metric converted from the published imperial value
Steel Tracks With Pads 728lb 330kg‖ — metric converted from the published imperial value

16 Certification - Cab Specification

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

Data notes

‖

Converted metric figure. The source published imperial figures only for this machine. Metric figures marked ‖ are unit conversions of the published imperial value, rounded to the same precision — they are not separately published measurements. Because there is no independently published metric figure to compare against, no cross-unit consistency check applies to them; the imperial figures they derive from were checked for physically possible magnitude and for plausibility against this equipment class.

Method. Figures are manufacturer reference specifications, not measurements. The source published imperial figures for this machine in a single unit system, so no cross-unit consistency check applies; every value is checked for physically possible magnitude and for plausibility against its equipment class before publication. Figures that fail either check are withheld rather than shown, and figures reconstructed from related data are marked above. Metric figures marked ‖ are converted from the published imperial value rather than reproduced from the source.