309 CR VAB Mini Hydraulic Excavator

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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.

Engine

Net Power
69.5 HP
Bore
3.7 in
Displacement
203 in³
Stroke
4.7 in
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
Engine Model - U.S. EPA Tier 4 Final/EU Stage V
Cat C3.3B
Gross Power - SAE J1995
74.3 HP

Weights

Operating Weight
21477 lb
Maximum Operating Weight*
21477 lb
Minimum Operating Weight*
20121 lb
Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Note (1)
*Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.

Dimensions - VAB In

Dig Depth
150.2 in
Boom Swing Left
24 in
Boom Swing Right
37 in
Boom in Reach
122.8 in
Cab Height
100 in
Ground Clearance
14 in
Maximum Blade Depth
19.1 in
Maximum Blade Height
16.1 in
Maximum Dig Height
205.5 in
Maximum Dump Clearance
135.8 in
Maximum Reach
256.5 in
Maximum Reach at Ground Level
248 in
Overall Shipping Length
255.7 in
Overall Track Width
97.2 in
Overall Undercarriage Length
126 in
Stick Length
71.7 in
Swing Bearing Height
29.8 in
Tail Swing with Counterweight
62.4 in
Tail Swing without Counterweight
57.1 in
Track Belt/Shoe Width
17.7 in
Transport Height
97.4 in
Vertical Wall
99.2 in

Blade

Height
17 in
Width - Standard
97.2 in
Width - Wide
103.9 in

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.

Certification - Cab

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

Swing System

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

Hydraulic System

Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump
37 gal/min
Maximum Auxiliary Circuit - Primary (High Flow) - Pressure at Pump
4134 psi
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gal/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gal/min
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Digging Force - Bucket
13946 lbf
Digging Force - Stick - Standard
9509 lbf
Operating Pressure - Equipment
4134 psi
Operating Pressure - Swing
3626 psi
Operating Pressure - Travel
4134 psi
Pump Flow at 2,400 rpm
62 gal/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump

Weight Increase from Minimum Configuration

Standard Stick
77 lb
Counterweight
552 lb
Steel Tracks with Pads
728 lb

Dimensions - VAB Out

Boom Swing Left
24 in
Boom Swing Right
37 in
Boom in Reach
106.7 in
Cab Height
100 in
Dig Depth
136.2 in
Ground Clearance
14 in
Maximum Blade Depth
19.1 in
Maximum Blade Height
16.1 in
Maximum Dig Height
322 in
Maximum Dump Clearance
247.4 in
Maximum Reach
310.4 in
Maximum Reach at Ground Level
303.7 in
Overall Shipping Length
255.7 in
Overall Track Width
97.2 in
Overall Undercarriage Length
126 in
Stick Length
71.7 in
Swing Bearing Height
29.8 in
Tail Swing with Counterweight
62.4 in
Tail Swing without Counterweight
57.1 in
Track Belt/Shoe Width
17.7 in
Transport Height
97.4 in
Vertical Wall
146.7 in

Service Refill Capacities

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

Sound

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

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.

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
5.5 psi
Ground Pressure - Minimum Weight
5.1 psi
Maximum Traction Force - High Speed
6497 lbf
Maximum Traction Force - Low Speed
19064 lbf
Travel Speed - High
3.1 mile/h
Travel Speed - Low
1.6 mile/h