309 CR

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An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.

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Specifications

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.

Blade

Height

17 in 431 mm
Width - Wide

104 in 2640 mm
Width - Standard

97 in 2470 mm

Certification - Cab

Roll Over Protective Structure (ROPS)

ISO 12117-2:2008
Top Guard

ISO 10262:1998 (Level I)
Tip Over Protective Structure (TOPS)

ISO 12117:1997

Dimensions - Long Stick

Dig Depth

182.8 in 4642 mm
Maximum Dump Clearance

199.7 in 5072 mm
Boom In Reach

126.6 in 3215 mm
Vertical Wall

134 in 3404 mm
Maximum Blade Depth

26 in 671 mm
O/A Undercarriage Length

126 in 3200 mm
O/A Track Width

97.2 in 2470 mm
Stick Length

92.8 in 2358 mm
Maximum Blade Height

16.1 in 408 mm
Maximum Dig Height

277.1 in 7039 mm
Tail Swing with Counterweight

62.4 in 1585 mm
Maximum Reach

300.7 in 7637 mm
Cab Height

100 in 2541 mm
Ground Clearance

14 in 356 mm
Swing Bearing - Height

29.7 in 756 mm
Track Belt/Shoe Width

17.7 in 450 mm
Boom Swing - Left

23.8 in 604 mm
Boom Swing - Right

36.8 in 935 mm
Tail Swing without Counterweight

57.1 in 1450 mm
Maximum Reach - Ground Level

293.7 in 7460 mm
Note

*Boom Height when stick is pinned in transport position with no attachments.
Note (2)

***With blade positioned at the rear of the machine.
Note (1)

**Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Height - Boom Transport - No Tools*

89 in 2260 mm
Overall Shipping Length - with Counterweight

7052 mm (277.6 in)***
Height - Boom Working - With Tools**

120.1 in 3050 mm
Overall Shipping Length - without Counterweight

7052 mm (277.6 in)***

Dimensions - Standard Stick

Boom Swing - Right

36.8 in 935 mm
Maximum Dump Clearance

187.4 in 4760 mm
Tail Swing without Counterweight

57.1 in 1450 mm
Maximum Reach - Ground Level

273.6 in 6949 mm
O/A Undercarriage Length

126 in 3200 mm
Cab Height

100 in 2541 mm
Swing Bearing - Height

29.7 in 756 mm
Maximum Dig Height

265.2 in 6736 mm
Track Belt/Shoe Width

17.7 in 450 mm
O/A Track Width

97.2 in 2470 mm
Ground Clearance

14 in 356 mm
Maximum Reach

281.1 in 7141 mm
Tail Swing with Counterweight

62.4 in 1585 mm
Boom In Reach

120.4 in 3059 mm
Vertical Wall

117.8 in 2991 mm
Dig Depth

161.7 in 4108 mm
Stick Length

71.8 in 1820 mm
Boom Swing - Left

23.8 in 604 mm
Maximum Blade Height

16.1 in 408 mm
Maximum Blade Depth

26 in 671 mm
Note

*Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - without Counterweight

266.7 in 6774 mm
Overall Shipping Length - with Counterweight

266.7 in 6774 mm
Note (2)

***With blade positioned at the rear of the machine.
Note (1)

**Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Height - Boom Transport - No Tools*

95.7 in 2430 mm
Height - Boom Working - With Tools**

104.7 in 2660 mm

Engine

Net Power

69.5 hp 51.8 kW
Engine Model

Cat C3.3B
Displacement

203 in³ 3.33 l
Bore

3.7 in 94 mm
Stroke

4.7 in 120 mm
Gross Power - SAE J1995:2014

74.3 hp 55.4 kW
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269

69.5 hp 51.8 kW

Hydraulic System

Type

Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing

3626 psi 250 bar
Digging Force - Stick - Standard

9500 lb 42.3 kN
Digging Force - Stick - Long

8023 lb 35.7 kN
Operating Pressure - Travel

4134 psi 285 bar
Pump Flow at 2,400 rpm

62 gal/min 233 l/min
Digging Force - Bucket

13943 lb 62 kN
Operating Pressure - Equipment

4134 psi 285 bar
Note

Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Secondary - Flow at Pump

9 gal/min 33 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump

4134 psi 285 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump

35 gal/min 131 l/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump

4134 psi 285 bar
Maximum Auxiliary Circuit - High Flow - Pressure at Pump

4134 lbf/in 285 bar
Maximum Auxiliary Circuit - High Flow - Flow at Pump

37 gal/min 140 l/min

Service Refill Capacities

Engine Oil

3 gal (US) 11.2 l
Fuel Tank

39 gal (US) 147 l
Hydraulic System

29 gal (US) 110 l
Cooling System

2.6 gal (US) 10 l
Hydraulic Tank

14 gal (US) 53 l

Sound

Average Exterior Sound Pressure (ISO 6395:2008)

99 dB(A) 99 dB(A)
Note

European Union Directive "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008)

72 dB(A) 72 dB(A)

Specifications

Note

The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage.

Sustainability

Recyclability

96%

Swing System

Machine Swing Speed

10.6 r/min 10.6 r/min
Boom Swing - Right

50 degrees
Boom Swing - Left

60 degrees

Travel System

Gradeability - Maximum

30 degrees
Ground Pressure - Minimum Weight

5 psi 34.7 kPa
Ground Pressure - Maximum Weight

5.4 psi 37.1 kPa
Travel Speed - High

3.1 mile/h 4.9 km/h
Travel Speed - Low

1.6 mile/h 2.6 km/h
Maximum Traction Force - High Speed

6497 lb 28.9 kN
Maximum Traction Force - Low Speed

19064 lb 84.8 kN

Weight Increase from Minimum Configuration

Steel Tracks with Pads

728 lb 330 kg
Long Stick

146 lb 66 kg
Counterweight

552 lb 250 kg

Weights

Operating Weight

21091 lb 9565 kg
Maximum Operating Weight with Cab**

21091 lb 9565 kg
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*

19735 lb 8950 kg

Benefits

SUSTAINABILITY

The Cat® C3.3B engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (if equipped).

*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)

SIMPLE SERVICE FOR LESS DOWNTIME

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.

HIGH FLOW

Dedicated auxiliary hydraulic pump is ideal for running power-hungry attachments while allowing the machine to simultaneously travel and multifunction. This feature allows consistent pressure to the auxiliary lines with no loss of hydraulic power keeping your attachment running at full power maintaining optimal productivity.

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.

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.

SUSTAINABILITY

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.

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.

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.

HIGH FLOW

BIG PERFORMANCE IN A MINI DESIGN

Increased lifting, swinging, travel and multi-functioning performance helps you get the job done more efficiently, blade float allows for easy clean up and long undercarriage provides improved stability.

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!