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.
309 CR

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 II)
Tip Over Protective Structure (TOPS) ISO 12117:1997
Units: USMetric

Dimensions - Long Stick

Dig Depth 181 in 4593 mm
O/A Shipping Length 268 in 6816 mm
Maximum Dump Clearance 202 in 5122 mm
Boom In Reach 127 in 3215 mm
Vertical Wall 132 in 3354 mm
Maximum Blade Depth 26 in 671 mm
O/A Undercarriage Length 126 in 3200 mm
O/A Track Width 97 in 2470 mm
Transport Height 99 in 2514 mm
Stick Length 93 in 2358 mm
Maximum Blade Height 14 in 355 mm
Maximum Dig Height 279 in 7089 mm
Tail Swing with Counterweight 65 in 1645 mm
Maximum Reach 301 in 7637 mm
Cab Height 100 in 2607 mm
Ground Clearance 13.5 in 356 mm
Swing Bearing - Height 31 in 795 mm
Track Belt/Shoe Width 18 in 450 mm
Boom Swing - Left 24 in 604 mm
Boom Swing - Right 37 in 935 mm
Tail Swing without Counterweight 57 in 1450 mm
Maximum Reach - Ground Level 293 in 7449 mm
Units: USMetric

Dimensions - Standard Stick

Boom Swing - Right 37 in 935 mm
Maximum Dump Clearance 189 in 4810 mm
Tail Swing without Counterweight 57 in 1450 mm
Transport Height 98 in 2487 mm
Maximum Reach - Ground Level 273 in 6930 mm
O/A Undercarriage Length 126 in 3200 mm
Cab Height 100 in 2607 mm
Swing Bearing - Height 31 in 795 mm
Maximum Dig Height 149 in 3786 mm
Track Belt/Shoe Width 18 in 450 mm
O/A Track Width 97 in 2470 mm
Ground Clearance 14 in 356 mm
O/A Shipping Length 265 in 6731 mm
Maximum Reach 281 in 7141 mm
Tail Swing with Counterweight 65 in 1645 mm
Boom In Reach 120 in 3059 mm
Vertical Wall 116 in 2941 mm
Dig Depth 160 in 4058 mm
Stick Length 72 in 1823 mm
Boom Swing - Left 24 in 604 mm
Maximum Blade Height 14 in 355 mm
Maximum Blade Depth 26 in 671 mm
Units: USMetric

Engine

Net Power 70.3 HP 52.4 kW
Engine Model Cat C3.3B
Displacement 203 in³ 3.33 l
Bore 3.7 in 94 mm
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
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
Units: USMetric

Hydraulic System

Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing 3626 psi 250 bar
Auxiliary Circuit - Secondary - Flow 9 gal/min 33 l/min
Auxiliary Circuit - Primary (High Flow) - Pressure 4134 psi 285 bar
Digging Force - Stick - Standard 9500 lb 42.3 kN
Digging Force - Stick - Long 8023 lb 35.7 kN
Auxiliary Circuit - Secondary - Pressure 4134 psi 285 bar
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
Auxiliary Circuit - Primary (High Flow) - Flow 37 gal/min 140 l/min
Operating Pressure - Equipment 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. 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
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 20731 lb 9403 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
Smart Tech Electronic Pump
OPERATOR ENVIRONMENT
Sealed and Pressurized Cab
UNDERCARRIAGE
Greased and Lubricated Track
BOOM, STICK AND LINKAGES
One Piece Boom (3400 mm/133.9 in)
ELECTRICAL
12 Volt Electrical System

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