309 CR Mini Hydraulic Excavator

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Description

Technical Specifications

Benefits and Features

Equipment

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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.

Engine
Net Power	69.5 hp
Engine Model	Cat C3.3B
Displacement	203 in³
Bore	3.7 in
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269	69.5 hp
Gross Power - SAE J1995	74.3 hp
Stroke	4.7 in
Weights
Operating Weight	21091 lb
Maximum Operating Weight with Cab**	21091 lb
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
Dimensions - Long Stick
Dig Depth	182.8 in
Maximum Dump Clearance	199.7 in
Boom In Reach	126.6 in
Vertical Wall	134 in
Maximum Blade Depth	26 in
O/A Undercarriage Length	126 in
O/A Track Width	97.2 in
Stick Length	92.8 in
Maximum Blade Height	16.1 in
Maximum Dig Height	277.1 in
Tail Swing with Counterweight	62.4 in
Maximum Reach	300.7 in
Cab Height	100 in
Height - Boom Transport - No Tools*	89 in
Height - Boom Working - With Tools**	120.1 in
Ground Clearance	14 in
Swing Bearing - Height	29.7 in
Track Belt/Shoe Width	17.7 in
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.
Boom Swing - Left	23.8 in
Overall Shipping Length - with Counterweight	7052 mm (277.6 in)***
Boom Swing - Right	36.8 in
Overall Shipping Length - without Counterweight	7052 mm (277.6 in)***
Tail Swing without Counterweight	57.1 in
Maximum Reach - Ground Level	293.7 in
Blade
Height	17 in
Width - Wide	104 in
Width - Standard	97 in
Dimensions - Standard Stick
Boom Swing - Right	36.8 in
Maximum Dump Clearance	187.4 in
Tail Swing without Counterweight	57.1 in
Maximum Reach - Ground Level	273.6 in
O/A Undercarriage Length	126 in
Cab Height	100 in
Swing Bearing - Height	29.7 in
Maximum Dig Height	265.2 in
Track Belt/Shoe Width	17.7 in
O/A Track Width	97.2 in
Ground Clearance	14 in
Maximum Reach	281.1 in
Overall Shipping Length - without Counterweight	266.7 in
Overall Shipping Length - with Counterweight	266.7 in
Height - Boom Transport - No Tools*	95.7 in
Height - Boom Working - With Tools**	104.7 in
Note	*Boom Height when stick is pinned in transport position with no attachments.
Tail Swing with Counterweight	62.4 in
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.
Boom In Reach	120.4 in
Vertical Wall	117.8 in
Dig Depth	161.7 in
Stick Length	71.8 in
Boom Swing - Left	23.8 in
Maximum Blade Height	16.1 in
Maximum Blade Depth	26 in
Sustainability
Recyclability	96%
Hydraulic System
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing	3626 psi
Maximum Auxiliary Circuit - High Flow - Pressure at Pump	4134 lbf/in
Digging Force - Stick - Standard	9500 lb
Maximum Auxiliary Circuit - High Flow - Flow at Pump	37 gal/min
Digging Force - Stick - Long	8023 lb
Maximum Auxiliary Circuit - Secondary - Flow at Pump	9 gal/min
Operating Pressure - Travel	4134 psi
Maximum Auxiliary Circuit - Primary - Flow at Pump	35 gal/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump	4134 psi
Note	Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Primary - Pressure at Pump	4134 psi
Pump Flow at 2,400 rpm	62 gal/min
Digging Force - Bucket	13943 lb
Operating Pressure - Equipment	4134 psi
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)
Travel System
Gradeability - Maximum	30 degrees
Ground Pressure - Minimum Weight	5 psi
Ground Pressure - Maximum Weight	5.4 psi
Travel Speed - High	3.1 mile/h
Travel Speed - Low	1.6 mile/h
Maximum Traction Force - High Speed	6497 lb
Maximum Traction Force - Low Speed	19064 lb
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
Service Refill Capacities
Engine Oil	3 gal (US)
Fuel Tank	39 gal (US)
Hydraulic System	29 gal (US)
Cooling System	2.6 gal (US)
Hydraulic Tank	14 gal (US)
Weight Increase from Minimum Configuration
Steel Tracks with Pads	728 lb
Long Stick	146 lb
Counterweight	552 lb
Swing System
Machine Swing Speed	10.6 r/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.

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, blade float allows for easy clean up and long undercarriage provides improved stability.

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.

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.

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)

Standard Equipment:

Engine
- Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Swing Brake
- Automatic Two Speed Travel
- Fuel Water Separator with Indicator
- Radial Seal – Double Element Air Filter
- Extended Life Coolant, –37° C (–35° F)
Hydraulics
- Electronic Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Dedicated Auxiliary Hydraulic Pump
- Power On Demand
- Hydraulic Temperature Monitoring
- Certified Accumulator
- HYDO Advanced Hydraulic Oil
- Ecology Drain
Operator Environment
- Top Guard ISO 10262 1998 Level I
- ROPS ISO 12117-2:2008
- Stick Steer Mode
- Travel Cruise Control
- Control Pattern Changer
- Adjustable Wrist Rests
- Molded Footrests
- Removable, Washable Floor Mat
- Travel Pedals and Hand Levers
- Cat Key with Passcode Option
- HVAC with Automatic Temperature Control
- Hydraulic Lockout Controls
- Integrated Lower Front Window
- Assisted Front Window Overhead Storage
- Rear Window Emergency Exit
- Fabric, High Back, Suspension Seat
- Retractable Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- LED Interior Light
- Literature Holder
- Mounting Bosses for Top and Front Guards
- 12V Power Socket
- Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
- Skylight
- Signaling/Warning Horn
- Cab and (left side) Boom Work Lights
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
  – Jog Dial Interface
  – Fuel Level and Coolant Temperature Gauges
  – Maintenance and Machine Monitoring
  – Performance and Machine Adjustments
  – Numeric Security Code
  – Multiple Languages
  – Camera Ready (IP68 & IP69K)
  – Hour Meter with Wake Up Switch
Undercarriage
- Greased and Lubricated Track
- Tie Down Eyes on Track Frame
- Dozer Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
Boom, Stick And Linkages
- One Piece Boom (3400 mm/133.9 in)
- Standard Stick (1820 mm/71.7 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler (not available in all regions)
- Thumb Ready (not available in all regions)
Electrical
- 12 Volt Electrical System
- 60 Ampere Alternator
- Circuit Breaker
- 900 CCA Maintenance Free Battery
- Battery Disconnect
- Ignition Key Stop Switch
- Travel Alarm
Other
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors