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309 CR VAB Mini Hydraulic Excavator

Overview

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.

309 CR VAB Mini Hydraulic Excavator - Specifications

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
Stroke
4.7 in
120 mm
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
70.3 HP
52.4 kW
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
Weights
Operating Weight
20731 lb
9403 kg
Note
*Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Minimum Operating Weight with Cab*
19304 lb
8756 kg
Note (1)
*Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Maximum Operating Weight with Cab**
20731 lb
9403 kg
Maximum Operating Weight with Cab*
21054 lb
9550 kg
Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Dimensions - VAB In
Dig Depth
154.8 in
3931 mm
Ground Clearance
13.5 in
343 mm
Overall Undercarriage Length
126 in
3200 mm
Transport Height
99.6 in
2530 mm
Tail Swing with Counterweight
64.8 in
1645 mm
Boom Swing Left
24 in
604 mm
Maximum Dig Height
216.3 in
5494 mm
Vertical Wall
133.6 in
3394 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Maximum Reach
260.3 in
6612 mm
Stick Length
71.8 in
1823 mm
Maximum Blade Height
13.5 in
342 mm
Cab Height
99 in
2514 mm
Maximum Blade Depth
26.9 in
684 mm
Swing Bearing Height
31.4 in
798 mm
Track Belt/Shoe Width
17.7 in
450 mm
Maximum Reach at Ground Level
252.1 in
6403 mm
Boom in Reach
112.3 in
2853 mm
Maximum Dump Clearance
143.4 in
3643 mm
Overall Shipping Length
227.2 in
5771 mm
Overall Track Width
97.2 in
2470 mm
Boom Swing Right
37 in
935 mm
Blade
Height
17 in
431 mm
Width - Standard
97.2 in
2470 mm
Width - Wide
103.9 in
2640 mm
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 Out
Tail Swing with Counterweight
64.8 in
1645 mm
Overall Track Width
97.2 in
2470 mm
Maximum Dig Height
321.7 in
8171 mm
Maximum Blade Depth
26.9 in
684 mm
Overall Shipping Length
281.8 in
7158 mm
Track Belt/Shoe Width
17.7 in
450 mm
Dig Depth
136.5 in
3468 mm
Transport Height
96.5 in
2452 mm
Boom Swing Left
24 in
604 mm
Boom Swing Right
37 in
935 mm
Stick Length
71.8 in
1823 mm
Maximum Blade Height
13.5 in
342 mm
Vertical Wall
138.7 in
3524 mm
Maximum Dump Clearance
251.6 in
6390 mm
Swing Bearing Height
31.4 in
798 mm
Ground Clearance
13.5 in
343 mm
Cab Height
99 in
2514 mm
Boom in Reach
117.9 in
2995 mm
Maximum Reach
311 in
7900 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Maximum Reach at Ground Level
304.4 in
7732 mm
Overall Undercarriage Length
126 in
3200 mm
Dimensions - Standard Stick
Dig Depth
162 in
4115 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Maximum Dig Height
264.9 in
6729 mm
Boom Swing - Right
37 in
935 mm
O/A Track Width
97.2 in
2470 mm
Boom Swing - Left
24 in
604 mm
Cab Height
99 in
2514 mm
Transport Height
97.9 in
2487 mm
O/A Undercarriage Length
126 in
3200 mm
Maximum Dump Clearance
187.1 in
4753 mm
Track Belt/Shoe Width
17.7 in
450 mm
Maximum Reach
281.1 in
7140 mm
Stick Length
71.8 in
1823 mm
O/A Shipping Length
259 in
6578 mm
Maximum Reach - Ground Level
273.6 in
6951 mm
Swing Bearing - Height
28.7 in
729 mm
Vertical Wall
118 in
2998 mm
Ground Clearance
13.5 in
343 mm
Maximum Blade Depth
26.9 in
684 mm
Maximum Blade Height
13.5 in
342 mm
Boom In Reach
120.4 in
3058 mm
Tail Swing with Counterweight
64.8 in
1645 mm
Dimensions - Long Stick
Swing Bearing - Height
28.7 in
729 mm
Maximum Reach
300.7 in
7637 mm
Tail Swing with Counterweight
64.8 in
1645 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Track Belt/Shoe Width
17.7 in
450 mm
Ground Clearance
13.5 in
343 mm
O/A Track Width
97.2 in
2470 mm
Maximum Blade Depth
26.9 in
684 mm
Maximum Dump Clearance
199.4 in
5065 mm
Maximum Dig Height
276.8 in
7032 mm
O/A Shipping Length
262.3 in
6662 mm
O/A Undercarriage Length
126 in
3200 mm
Vertical Wall
134.3 in
3411 mm
Stick Length
92.8 in
2358 mm
Dig Depth
183.1 in
4650 mm
Boom Swing - Right
37 in
935 mm
Boom Swing - Left
24 in
604 mm
Boom In Reach
126.6 in
3215 mm
Transport Height
99 in
2514 mm
Cab Height
99 in
2514 mm
Maximum Blade Height
13.5 in
342 mm
Maximum Reach - Ground Level
293.8 in
7462 mm
Travel System
Maximum Traction Force - Low Speed
19064 lb
84.8 kN
Ground Pressure - Maximum Weight
6 psi
40.8 kPa
Travel Speed - Low
1.6 mile/h
2.6 km/h
Gradeability - Maximum
30 degrees
Ground Pressure - Minimum Weight
6 psi
38 kPa
Maximum Traction Force - High Speed
6497 lb
28.9 kN
Travel Speed - High
3.1 mile/h
4.9 km/h
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)
Hydraulic System
Auxiliary Circuit - Primary (High Flow) - Flow
37 gal/min
140 l/min
Operating Pressure - Swing
3626 psi
250 bar
Operating Pressure - Equipment
4134 psi
285 bar
Auxiliary Circuit - Secondary - Pressure
4134 psi
285 bar
Digging Force - Stick - Standard
9500 lb
42.3 kN
Auxiliary Circuit - Secondary - Flow
9 gal/min
33 l/min
Operating Pressure - Travel
4134 psi
285 bar
Auxiliary Circuit - Primary (High Flow) - Pressure
4134 psi
285 bar
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
62 gal/min
233 l/min
Digging Force - Bucket
13943 lb
62 kN
Digging Force - Stick - Long
8023 lb
35.7 kN
Weight Increase from Minimum Configuration
Long Stick
146 lb
66 kg
Counterweight
552 lb
250 kg
Steel Tracks with Pads
728 lb
330 kg
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.
Service Refill Capacities
Hydraulic Tank
14 gal (US)
53 l
Fuel Tank
39 gal (US)
147 l
Hydraulic System
28 gal (US)
107 l
Engine Oil
3 gal (US)
11.2 l
Cooling System
2.6 gal (US)
10 l
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.
Swing System
Machine Swing Speed
10.6 r/min
10.6 r/min