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309 CR Mini Hydraulic Excavator

309 CR Mini Hydraulic Excavator

At a Glance

Operating Weight
21091 lb
Dig Depth
182.8 in
Engine Model
Cat C3.3B
Height
17 in
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Overview

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.

Weights

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Operating Weight 21091lb
Maximum Operating Weight with Cab** 21091lb
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* 19735lb

Dimensions - Long Stick

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Dig Depth 182.8in
Maximum Dump Clearance 199.7in
Boom In Reach 126.6in
Vertical Wall 134in
Maximum Blade Depth 26in
O/A Undercarriage Length 126in
O/A Track Width 97.2in
Stick Length 92.8in
Maximum Blade Height 16.1in
Maximum Dig Height 277.1in
Tail Swing with Counterweight 62.4in
Maximum Reach 300.7in
Cab Height 100in
Ground Clearance 14in
Swing Bearing - Height 29.7in
Track Belt/Shoe Width 17.7in
Boom Swing - Left 23.8in
Boom Swing - Right 36.8in
Tail Swing without Counterweight 57.1in
Maximum Reach - Ground Level 293.7in
Note *Boom Height when stick is pinned in transport position with no attachments.
Note (2) ***With blade positioned at the rear of the machine.
Note (1) **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Height - Boom Transport - No Tools* 89in
Overall Shipping Length - with Counterweight 7052 mm (277.6 in)***
Height - Boom Working - With Tools** 120.1in
Overall Shipping Length - without Counterweight 7052 mm (277.6 in)***

Engine

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Engine Model Cat C3.3B
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 69.5HP
Displacement 203in³
Bore 3.7in
Stroke 4.7in
Gross Power - SAE J1995 74.3HP

Blade

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Height 17in
Width - Wide 104in
Width - Standard 97in

Dimensions - Standard Stick

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Note *Boom Height when stick is pinned in transport position with no attachments.
Boom Swing - Right 36.8in
Maximum Dump Clearance 187.4in
Tail Swing without Counterweight 57.1in
Maximum Reach - Ground Level 273.6in
O/A Undercarriage Length 126in
Cab Height 100in
Swing Bearing - Height 29.7in
Maximum Dig Height 265.2in
Track Belt/Shoe Width 17.7in
O/A Track Width 97.2in
Ground Clearance 14in
Maximum Reach 281.1in
Tail Swing with Counterweight 62.4in
Boom In Reach 120.4in
Vertical Wall 117.8in
Dig Depth 161.7in
Stick Length 71.8in
Boom Swing - Left 23.8in
Maximum Blade Height 16.1in
Maximum Blade Depth 26in
Overall Shipping Length - without Counterweight 266.7in
Overall Shipping Length - with Counterweight 266.7in
Note (2) ***With blade positioned at the rear of the machine.
Note (1) **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Height - Boom Transport - No Tools* 95.7in
Height - Boom Working - With Tools** 104.7in

Hydraulic System

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Maximum Auxiliary Circuit - High Flow - Flow at Pump 37gal/min
Maximum Auxiliary Circuit - High Flow - Pressure at Pump 4134lbf/in
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 4134psi
Maximum Auxiliary Circuit - Secondary - Flow at Pump 9gal/min
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing 3626psi
Digging Force - Stick - Standard 9500lb
Digging Force - Stick - Long 8023lb
Operating Pressure - Travel 4134psi
Pump Flow at 2,400 rpm 62gal/min
Digging Force - Bucket 13943lb
Operating Pressure - Equipment 4134psi
Maximum Auxiliary Circuit - Primary - Pressure at Pump 4134psi
Maximum Auxiliary Circuit - Primary - Flow at Pump 35gal/min

Sound

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

Travel System

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Gradeability - Maximum 30 degrees
Ground Pressure - Minimum Weight 5psi
Ground Pressure - Maximum Weight 5.4psi
Travel Speed - High 3.1mile/h
Travel Speed - Low 1.6mile/h
Maximum Traction Force - High Speed 6497lb
Maximum Traction Force - Low Speed 19064lb

Certification - Cab

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

Service Refill Capacities

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Engine Oil 3gal (US)
Fuel Tank 39gal (US)
Hydraulic System 29gal (US)
Cooling System 2.6gal (US)
Hydraulic Tank 14gal (US)

Weight Increase from Minimum Configuration

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Steel Tracks with Pads 728lb
Long Stick 146lb
Counterweight 552lb

Swing System

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

Air Conditioning System

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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.

Specifications

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Note The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage.