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

Engine Model
Cat C3.3B
Net Power
70.3HP
Bore
3.7in
Displacement
203in³
Gross Power - ISO 14396
74.3HP
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
71.5HP
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**
20731lb
Minimum Operating Weight with Cab*
19304lb
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.

Blade

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

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)

Dimensions - Long Stick

Boom In Reach
126.6in
Boom Swing - Left
24in
Boom Swing - Right
37in
Cab Height
99in
Dig Depth
183.1in
Ground Clearance
13.5in
Maximum Blade Depth
26.9in
Maximum Blade Height
13.5in
Maximum Dig Height
276.8in
Maximum Dump Clearance
199.4in
Maximum Reach
300.7in
Maximum Reach - Ground Level
293.8in
O/A Shipping Length
262.3in
O/A Track Width
97.2in
O/A Undercarriage Length
126in
Stick Length
92.8in
Swing Bearing - Height
28.7in
Tail Swing with Counterweight
64.8in
Tail Swing without Counterweight
57.1in
Track Belt/Shoe Width
17.7in
Transport Height
99in
Vertical Wall
134.3in

Dimensions - Standard Stick

Boom In Reach
120.4in
Boom Swing - Left
24in
Boom Swing - Right
37in
Cab Height
99in
Dig Depth
162in
Ground Clearance
13.5in
Maximum Blade Depth
26.9in
Maximum Blade Height
13.5in
Maximum Dig Height
264.9in
Maximum Dump Clearance
187.1in
Maximum Reach
281.1in
Maximum Reach - Ground Level
273.6in
O/A Shipping Length
259in
O/A Track Width
97.2in
O/A Undercarriage Length
126in
Stick Length
71.8in
Swing Bearing - Height
28.7in
Tail Swing with Counterweight
64.8in
Tail Swing without Counterweight
57.1in
Track Belt/Shoe Width
17.7in
Transport Height
97.9in
Vertical Wall
118in

Hydraulic System

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

Service Refill Capacities

Cooling System
2.6gal (US)
Engine Oil
3gal (US)
Fuel Tank
39gal (US)
Hydraulic System
28gal (US)
Hydraulic Tank
14gal (US)

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)

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
10.6r/min

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
6psi
Ground Pressure - Minimum Weight
6psi
Maximum Traction Force - High Speed
6497lb
Maximum Traction Force - Low Speed
19064lb
Travel Speed - High
3.1mile/h
Travel Speed - Low
1.6mile/h

Weight Increase from Minimum Configuration

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

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.

UNMATCHED DEALER SUPPORT

  • Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.

Standard Equipment:

Optional Equipment:

    Other
    • Attachments including Buckets, Augers and Hammers
    • Wide Steel Tracks (600 mm/23.6 in)
    • Wide Dozer Blade
    • 2nd Auxiliary Hydraulic Lines
    • 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