New CAT Equipment

 

Mini Excavators 309 CR

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

Mini Excavators 309 CR

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 104 in 2640 mm
Width - Standard 97 in 2470 mm
Units: USMetric

Certification - Cab

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

Dimensions - Long Stick

Dig Depth 182.8 in 4643 mm
Maximum Dump Clearance 199.7 in 5072 mm
Boom In Reach 126.6 in 3215 mm
Vertical Wall 134 in 3404 mm
Maximum Blade Depth 26 in 671 mm
O/A Undercarriage Length 126 in 3200 mm
O/A Track Width 97.2 in 2470 mm
Stick Length 92.8 in 2358 mm
Maximum Blade Height 16.1 in 408 mm
Maximum Dig Height 277.1 in 7039 mm
Tail Swing with Counterweight 62.4 in 1585 mm
Maximum Reach 300.7 in 7637 mm
Cab Height 100 in 2541 mm
Ground Clearance 14 in 356 mm
Swing Bearing - Height 29.7 in 756 mm
Track Belt/Shoe Width 17.7 in 450 mm
Boom Swing - Left 23.8 in 604 mm
Boom Swing - Right 36.8 in 935 mm
Tail Swing without Counterweight 57.1 in 1450 mm
Maximum Reach - Ground Level 293.7 in 7460 mm
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* 89 in 2260 mm
Overall Shipping Length - with Counterweight 7052 mm (277.6 in)***
Height - Boom Working - With Tools** 120.1 in 3050 mm
Overall Shipping Length - without Counterweight 7052 mm (277.6 in)***
Units: USMetric

Dimensions - Standard Stick

Boom Swing - Right 36.8 in 935 mm
Maximum Dump Clearance 187.4 in 4760 mm
Tail Swing without Counterweight 57.1 in 1450 mm
Maximum Reach - Ground Level 273.6 in 6949 mm
O/A Undercarriage Length 126 in 3200 mm
Cab Height 100 in 2541 mm
Swing Bearing - Height 29.7 in 756 mm
Maximum Dig Height 265.2 in 6736 mm
Track Belt/Shoe Width 17.7 in 450 mm
O/A Track Width 97.2 in 2470 mm
Ground Clearance 14 in 356 mm
Maximum Reach 281.1 in 7141 mm
Tail Swing with Counterweight 62.4 in 1585 mm
Boom In Reach 120.4 in 3059 mm
Vertical Wall 117.8 in 2991 mm
Dig Depth 161.7 in 4108 mm
Stick Length 71.8 in 1820 mm
Boom Swing - Left 23.8 in 604 mm
Maximum Blade Height 16.1 in 408 mm
Maximum Blade Depth 26 in 671 mm
Note *Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - without Counterweight 266.7 in 6774 mm
Overall Shipping Length - with Counterweight 266.7 in 6774 mm
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* 95.7 in 2430 mm
Height - Boom Working - With Tools** 104.7 in 2660 mm
Units: USMetric

Engine

Net Power 69.5 HP 51.8 kW
Engine Model Cat C3.3B
Displacement 203 in³ 3.33 l
Bore 3.7 in 94 mm
Stroke 4.7 in 120 mm
Gross Power - SAE J1995 74.3 HP 55.4 kW
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 69.5 HP 51.8 kW
Units: USMetric

Hydraulic System

Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing 3626 psi 250 bar
Digging Force - Stick - Standard 9500 lb 42.3 kN
Digging Force - Stick - Long 8023 lb 35.7 kN
Operating Pressure - Travel 4134 psi 285 bar
Pump Flow at 2,400 rpm 62 gal/min 233 l/min
Digging Force - Bucket 13943 lb 62 kN
Operating Pressure - Equipment 4134 psi 285 bar
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Secondary - Flow at Pump 9 gal/min 33 l/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 4134 psi 285 bar
Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump 37 gal/min 140 l/min
Maximum Auxiliary Circuit - Primary (High Flow) - Pressure at Pump 4134 psi 285 bar
Units: USMetric

Service Refill Capacities

Engine Oil 3 gal (US) 11.2 l
Fuel Tank 39 gal (US) 147 l
Hydraulic System 29 gal (US) 110 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)
Note European Union Directive "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008) 72 dB(A) 72 dB(A)
Units: USMetric

Specifications

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

Swing System

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

Travel System

Gradeability - Maximum 30 degrees
Ground Pressure - Minimum Weight 5 psi 34.7 kPa
Ground Pressure - Maximum Weight 5.4 psi 37.1 kPa
Travel Speed - High 3.1 mile/h 4.9 km/h
Travel Speed - Low 1.6 mile/h 2.6 km/h
Maximum Traction Force - High Speed 6497 lb 28.9 kN
Maximum Traction Force - Low Speed 19064 lb 84.8 kN
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 21091 lb 9565 kg
Maximum Operating Weight with Cab** 21091 lb 9565 kg
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* 19735 lb 8950 kg
ENGINE
Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
HYDRAULICS
Electronic Variable Displacement Piston Pump
OPERATOR ENVIRONMENT
Top Guard ISO 10262 1998 Level I
UNDERCARRIAGE
Greased and Lubricated Track
BOOM, STICK AND LINKAGES
One Piece Boom (3400 mm/133.9 in)
ELECTRICAL
12 Volt Electrical System
OTHER
Locks on External Enclosure Doors

association discounts

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