309 CR VAB Mini Hydraulic Excavator
The Cat® 309 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.The 309 CR also features high flow hydraulics to handle power hungry attachments such as mulchers and brushcutters.
Specifications
Equipment
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Specifications
Note
The 309 CR VAB specifications are based on a machine configured with a Long (L) Undercarriage. For specifications representing a 309 CR VAB with a Standard Undercarriage, please refer to the 308 CR information.
Engine
Net Power
69.5 HP
51.8 kW
Displacement
203 in³
3.33 l
Stroke
4.7 in
120 mm
Bore
3.7 in
94 mm
Weights
Operating Weight
21477 lb
9740 kg
Note (1)
*Minimum Weight is based on rubber 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, standard stick, blade and no bucket.
Minimum Operating Weight*
20121 lb
9125 kg
Maximum Operating Weight*
21477 lb
9740 kg
Weight Increase from Minimum Configuration
Steel Tracks with Pads
728 lb
330 kg
Counterweight
552 lb
250 kg
Standard Stick
77 lb
35 kg
Travel System
Ground Pressure - Minimum Weight
5.1 psi
35.4 kPa
Travel Speed - High
3.1 mile/h
4.9 km/h
Maximum Traction Force - High Speed
6497 lbf
28.9 kN
Travel Speed - Low
1.6 mile/h
2.6 km/h
Ground Pressure - Maximum Weight
5.5 psi
37.8 kPa
Maximum Traction Force - Low Speed
19064 lbf
84.8 kN
Gradeability - Maximum
30 degrees
Service Refill Capacities
Fuel Tank
39 gal (US)
147 l
Hydraulic System
29 gal (US)
110 l
Engine Oil
3 gal (US)
11.2 l
Cooling System
2.6 gal (US)
10 l
Hydraulic Tank
14 gal (US)
53 l
Hydraulic System
Operating Pressure - Travel
4134 psi
285 bar
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard
9509 lbf
42.3 kN
Digging Force - Bucket
13946 lbf
62 kN
Pump Flow at 2,400 rpm
62 gal/min
233 l/min
Operating Pressure - Swing
3626 psi
250 bar
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment
4134 psi
285 bar
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 - Flow at Pump
35 gal/min
131 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi
285 bar
Maximum Auxiliary Circuit - Primary (High Flow) - Pressure at Pump
4134 psi
285 bar
Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump
37 gal/min
140 l/min
Swing System
Machine Swing Speed
10.6 r/min
10.6 r/min
Boom Swing - Left
60 degrees
Boom Swing - Right
50 degrees
Blade
Height
17 in
431 mm
Width - Wide
103.9 in
2640 mm
Width - Standard
97.2 in
2470 mm
Certification - Cab
Top Guard
ISO 10262:1998 (Level II)
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Sound
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
99 dB(A)
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)
72 dB(A)
Note
European Union Directive "2000/14/EC"
Dimensions - VAB In
Dig Depth
150.2 in
3815 mm
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.
Dimensions - VAB In
Cab Height
100 in
2541 mm
Maximum Blade Depth
19.1 in
484 mm
Maximum Blade Height
16.1 in
408 mm
Stick Length
71.7 in
1820 mm
Maximum Reach
256.5 in
6515 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Vertical Wall
99.2 in
2520 mm
Swing Bearing Height
29.8 in
756 mm
Track Belt/Shoe Width
17.7 in
450 mm
Boom Swing Right
37 in
935 mm
Overall Track Width
97.2 in
2470 mm
Overall Shipping Length
255.7 in
6495 mm
Maximum Dump Clearance
135.8 in
3450 mm
Boom in Reach
122.8 in
3120 mm
Maximum Reach at Ground Level
248 in
6300 mm
Transport Height
97.4 in
2475 mm
Overall Undercarriage Length
126 in
3200 mm
Ground Clearance
14 in
356 mm
Tail Swing with Counterweight
62.4 in
1585 mm
Maximum Dig Height
205.5 in
5220 mm
Boom Swing Left
24 in
605 mm
Dimensions - VAB Out
Ground Clearance
14 in
356 mm
Cab Height
100 in
2541 mm
Boom in Reach
106.7 in
2710 mm
Vertical Wall
146.7 in
3725 mm
Swing Bearing Height
29.8 in
756 mm
Maximum Dump Clearance
247.4 in
6285 mm
Overall Undercarriage Length
126 in
3200 mm
Maximum Reach at Ground Level
303.7 in
7715 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Maximum Reach
310.4 in
7885 mm
Track Belt/Shoe Width
17.7 in
450 mm
Overall Shipping Length
255.7 in
6495 mm
Maximum Blade Depth
19.1 in
484 mm
Maximum Dig Height
322 in
8180 mm
Overall Track Width
97.2 in
2470 mm
Tail Swing with Counterweight
62.4 in
1585 mm
Stick Length
71.7 in
1820 mm
Maximum Blade Height
16.1 in
408 mm
Boom Swing Right
37 in
935 mm
Boom Swing Left
24 in
605 mm
Transport Height
97.4 in
2475 mm
Dig Depth
136.2 in
3460 mm
Engine
Gross Power - SAE J1995
74.3 HP
55.4 kW
Note
Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC
69.5 HP
51.8 kW
Engine Model - U.S. EPA Tier 4 Final/EU Stage V
Cat C3.3B
Sustainability
Recyclability
96%
Standard Equipment
ENGINE
HYDRAULICS
OPERATOR ENVIRONMENT
UNDERCARRIAGE
BOOM, STICK AND LINKAGES
ELECTRICAL
OTHER
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