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309 CR
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309 CR
309 CR
Mini Excavators
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.
Net Power
69 hp/51.2 kW
Engine Model
Cat® C2.8 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
69 hp/51.2 kW
Gross Power - ISO 14396
55.4 kW/74.3 hp
Key Features
ALL DAY COMFORT
EASY TO OPERATE
STICK STEER TRAVEL MODE
BIG PERFORMANCE IN A MINI DESIGN
HIGH FLOW
SAFETY ON THE JOB SITE
SIMPLE SERVICE FOR LESS DOWNTIME
LOWER OPERATING COSTS
UNMATCHED DEALER SUPPORT
SUSTAINABILITY
Specifications
Metric
|
Imperial
Engine
Net Power
69 hp
51.2 kW
Engine Model
Cat® C2.8 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
69 hp
51.2 kW
Gross Power - ISO 14396
55.4 kW
74.3 hp
Bore
3.5 in
90 mm
Stroke
4.3 in
110 mm
Displacement
171 in³
2.8 l
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Weights
Operating Weight
20870 lb
9465 kg
Minimum Operating Weight with Cab*
18886 lb
8565 kg
Maximum Operating Weight with Cab**
20870 lb
9465 kg
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Weight Increase from Minimum Configuration
Counterweight
552 lb
250 kg
Long Stick
146 lb
66 kg
Steel Tracks with Pads
728 lb
330 kg
Travel System
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
Ground Pressure - Minimum Weight
5.4 psi
37.5 kPa
Ground Pressure - Maximum Weight
6 psi
41.4 kPa
Gradeability - Maximum
30 degrees
Service Refill Capacities
Cooling System
2.6 gal (US)
10 l
Engine Oil
2.3 gal (US)
8.8 l
Fuel Tank
39 gal (US)
147 l
Hydraulic Tank
14 gal (US)
53 l
Hydraulic System
29 gal (US)
110 l
Hydraulic System
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
62 gpm
233 L/min
Operating Pressure - Equipment
4134 psi
285 bar
Operating Pressure - Travel
4134 psi
285 bar
Operating Pressure - Swing
3626 psi
250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm
131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi
285 bar
Maximum Auxiliary Circuit - High Flow - Flow at Pump
37 gpm
140 L/min
Maximum Auxiliary Circuit - High Flow - Pressure at Pump
4134 lbf/in
285 bar
Digging Force - Stick - Standard
9500 lb
42.3 kN
Digging Force - Stick - Long
8023 lb
35.7 kN
Digging Force - Bucket
13943 lb
62 kN
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Swing System
Machine Swing Speed
10 r/min
10 r/min
Boom Swing - Left
60 degrees
Boom Swing - Right
50 degrees
Blade
Width - Standard
97 in
2470 mm
Width - Wide
104 in
2640 mm
Height
17 in
431 mm
Certification - Cab
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Dimensions - Standard Stick
Dig Depth
161.7 in
4108 mm
Vertical Wall
117.8 in
2991 mm
Maximum Reach - Ground Level
273.6 in
6949 mm
Maximum Reach
281.1 in
7141 mm
Maximum Dig Height
265.2 in
6736 mm
Maximum Dump Clearance
187.4 in
4760 mm
Boom In Reach
120.4 in
3059 mm
Tail Swing with Counterweight
62.4 in
1585 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Maximum Blade Height
16.1 in
408 mm
Maximum Blade Depth
26 in
671 mm
Height - Boom Transport - No Tools*
95.7 in
2430 mm
Height - Boom Working - With Tools**
104.7 in
2660 mm
Cab Height
100 in
2541 mm
Swing Bearing - Height
29.7 in
756 mm
O/A Undercarriage Length
126 in
3200 mm
Overall Shipping Length - with Counterweight
266.7 in
6774 mm
Overall Shipping Length - without Counterweight
266.7 in
6774 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
Stick Length
71.8 in
1820 mm
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Dimensions - Long Stick
Dig Depth
161.7 in
4108 mm
Vertical Wall
117.8 in
2991 mm
Maximum Reach - Ground Level
273.6 in
6949 mm
Maximum Reach
281.1 in
7141 mm
Maximum Dig Height
265.2 in
6736 mm
Maximum Dump Clearance
187.4 in
4760 mm
Boom In Reach
120.4 in
3059 mm
Tail Swing with Counterweight
62.4 in
1585 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Maximum Blade Height
16.1 in
408 mm
Maximum Blade Depth
26 in
671 mm
Height - Boom Transport - No Tools*
95.7 in
2430 mm
Height - Boom Working - With Tools**
104.7 in
2660 mm
Cab Height
100 in
2541 mm
Swing Bearing - Height
29.7 in
756 mm
O/A Undercarriage Length
126 in
3200 mm
Overall Shipping Length - with Counterweight
266.7 in
6774 mm
Overall Shipping Length - without Counterweight
266.7 in
6774 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
Stick Length
71.8 in
1820 mm
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Air Conditioning System
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).
Sound
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)
72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
99 dB(A)
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Sustainability
Recyclability
96%
Specifications
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Equipment
Standard Equipment
Optional Equipment
Downloads
309 CR Long Undercarriage Product Brochure (North America, Chile, Colombia, Europe, Turkey, ANZP)
309 CR Standard Undercarriage Product Brochure (Europe, Turkey, ANZP)
Cat Mini Hydraulic Excavators Product Line Brochure (North America)
Cat Mini Hydraulic Excavators Product Line Brochure (Europe)
Options And Accessories Kit Guide for Mini Hydraulic Excavators
Cat Attachments for Mini Excavators Brochure
Attachment Compatibility Guide for Mini Excavators