309 CR Mini Hydraulic Excavator

309 CR Mini Hydraulic Excavator

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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.

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Engine

Net Power
70.3HP
Engine Model
Cat C3.3B
Displacement
203in³
Bore
3.7in
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
71.5HP
Gross Power - ISO 14396
74.3HP
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
70.3HP
Stroke
4.7in

Weights

Operating Weight
20731lb
Maximum Operating Weight with Cab**
21091lb
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*
19735lb

Dimensions - Long Stick

Dig Depth
181in
O/A Shipping Length
268in
Maximum Dump Clearance
202in
Boom In Reach
127in
Vertical Wall
132in
Maximum Blade Depth
26in
O/A Undercarriage Length
126in
O/A Track Width
97in
Transport Height
99in
Stick Length
93in
Maximum Blade Height
14in
Maximum Dig Height
279in
Tail Swing with Counterweight
65in
Maximum Reach
301in
Cab Height
100in
Ground Clearance
13.5in
Swing Bearing - Height
31in
Track Belt/Shoe Width
18in
Boom Swing - Left
24in
Boom Swing - Right
37in
Tail Swing without Counterweight
57in
Maximum Reach - Ground Level
293in

Blade

Height
17in
Width - Wide
104in
Width - Standard
97in

Dimensions - Standard Stick

Boom Swing - Right
37in
Maximum Dump Clearance
189in
Tail Swing without Counterweight
57in
Transport Height
98in
Maximum Reach - Ground Level
273in
O/A Undercarriage Length
126in
Cab Height
100in
Swing Bearing - Height
31in
Maximum Dig Height
149in
Track Belt/Shoe Width
18in
O/A Track Width
97in
Ground Clearance
14in
O/A Shipping Length
265in
Maximum Reach
281in
Tail Swing with Counterweight
65in
Boom In Reach
120in
Vertical Wall
116in
Dig Depth
160in
Stick Length
72in
Boom Swing - Left
24in
Maximum Blade Height
14in
Maximum Blade Depth
26in

Hydraulic System

Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing
3626psi
Auxiliary Circuit - Secondary - Flow
9gal/min
Auxiliary Circuit - Primary (High Flow) - Pressure
4134psi
Digging Force - Stick - Standard
9500lb
Digging Force - Stick - Long
8023lb
Auxiliary Circuit - Secondary - Pressure
4134psi
Operating Pressure - Travel
4134psi
Pump Flow at 2,400 rpm
62gal/min
Digging Force - Bucket
13943lb
Auxiliary Circuit - Primary (High Flow) - Flow
37gal/min
Operating Pressure - Equipment
4134psi

Sound

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

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Minimum Weight
5psi
Ground Pressure - Maximum Weight
5.4psi
Travel Speed - High
3.1mile/h
Travel Speed - Low
1.6mile/h
Maximum Traction Force - High Speed
6497lb
Maximum Traction Force - Low Speed
19064lb

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

Service Refill Capacities

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

Weight Increase from Minimum Configuration

Steel Tracks with Pads
728lb
Long Stick
146lb
Counterweight
552lb

Swing System

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

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.

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.

ALL DAY COMFORT

  • A sealed and pressurized cab is equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.

EASY TO OPERATE

  • Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.

STICK STEER TRAVEL MODE

  • Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button. The benefit of less effort and improved control is in your hands!

BIG PERFORMANCE IN A MINI DESIGN

  • Increased lifting, swinging, travel and multi-functioning performance helps you get the job done more efficiently, and dig-to-blade allows for easy clean up.

SAFETY ON THE JOB SITE

  • Your safety is our top priority. The Cat Mini Excavator is designed to help keep you safe on the job. A back-up camera, courtesy work lights and a fluorescent retractable seat belt are just a few of the safety features we’ve built into the machine.

SIMPLE SERVICE FOR LESS DOWNTIME

  • Maintenance is quick and easy on the Cat Mini Excavator. Routine check points are easy to access at ground level with grouped service points and robust service panels.

LOWER OPERATING COSTS

  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat Mini Excavator was designed with reducing your operating costs in mind.

Standard Equipment:

Optional Equipment:

    Operator Environment
    • Rain Visor
    • Air Suspension Heated Seat
    Electrical
    • Rearview Camera
    • Rotating Beacon
    Other
    • Attachments including Buckets, Augers and Hammers
    • Wide Steel Tracks (600 mm/23.6 in)
    • Wide Dozer Blade
    • 2nd Auxiliary Hydraulic Lines with Case Drain
    • Additional Counterweight
    • Boom and Stick Hose Burst Check Valves
    • Bucket Linkage with Lift Eye
    • Track Guides
    • Water Jacket Heater
    • Refueling Pump
    • Variable Angle Boom (please see 309 CR VAB brochure for VAB specs and additional information)
    • Cab Guarding