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309 CR Mini Hydraulic Excavator
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® C2.8 Turbo engine meets U.S. EPA Tier 4 Final and EU Stage V 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)
| Engine | |
|---|---|
| Net Power | 51.2 kW (69 hp) |
| Engine Model | Cat® C2.8 Turbo |
| Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC | 51.2 kW (69 hp) |
| Gross Power - ISO 14396 | 74.3 hp (55.4 kW) |
| Bore | 90 mm (3.5 in) |
| Stroke | 110 mm (4.3 in) |
| Displacement | 2.8 l (171 inu00b3) |
| Note | Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards. |
| Note (1) | Advertised power is tested per the specified standard in effect at the time of manufacture. |
| Note (2) | Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load. |
| Weights | |
|---|---|
| Operating Weight | 9465 kg (20870 lb) |
| Minimum Operating Weight with Cab* | 8565 kg (18886 lb) |
| Maximum Operating Weight with Cab** | 9465 kg (20870 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. |
| Weight Increase from Minimum Configuration | |
|---|---|
| Counterweight | 250 kg (552 lb) |
| Long Stick | 66 kg (146 lb) |
| Steel Tracks with Pads | 330 kg (728 lb) |
| Travel System | |
|---|---|
| Travel Speed - High | 4.9 km/h (3.1 mile/h) |
| Travel Speed - Low | 2.6 km/h (1.6 mile/h) |
| Maximum Traction Force - High Speed | 28.9 kN (6497 lb) |
| Maximum Traction Force - Low Speed | 84.8 kN (19064 lb) |
| Ground Pressure - Minimum Weight | 37.5 kPa (5.4 psi) |
| Ground Pressure - Maximum Weight | 41.4 kPa (6 psi) |
| Gradeability - Maximum | 30 degrees |
| Service Refill Capacities | |
|---|---|
| Cooling System | 10 l (2.6 gal (US)) |
| Engine Oil | 8.8 l (2.3 gal (US)) |
| Fuel Tank | 147 l (39 gal (US)) |
| Hydraulic Tank | 53 l (14 gal (US)) |
| Hydraulic System | 110 l (29 gal (US)) |
| Hydraulic System | |
|---|---|
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Pump Flow at 2,400 rpm | 233 L/min (62 gpm) |
| Operating Pressure - Equipment | 285 bar (4134 psi) |
| Operating Pressure - Travel | 285 bar (4134 psi) |
| Operating Pressure - Swing | 250 bar (3626 psi) |
| Maximum Auxiliary Circuit - Primary - Flow at Pump | 131 L/min (35 gpm) |
| Maximum Auxiliary Circuit - Primary - Pressure at Pump | 285 bar (4134 psi) |
| Maximum Auxiliary Circuit - High Flow - Flow at Pump | 140 L/min (37 gpm) |
| Maximum Auxiliary Circuit - High Flow - Pressure at Pump | 285 bar (4134 lbf/in) |
| Digging Force - Stick - Standard | 42.3 kN (9500 lb) |
| Digging Force - Stick - Long | 35.7 kN (8023 lb) |
| Digging Force - Bucket | 62 kN (13943 lb) |
| Note | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
| Swing System | |
|---|---|
| Machine Swing Speed | 10 r/min (10 r/min) |
| Boom Swing - Left | 60 degrees |
| Boom Swing - Right | 50 degrees |
| Blade | |
|---|---|
| Width - Standard | 2470 mm (97 in) |
| Width - Wide | 2640 mm (104 in) |
| Height | 431 mm (17 in) |
| Certification - Cab | |
|---|---|
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
| Top Guard | ISO 10262:1998 (Level I) |
| Dimensions - Standard Stick | |
|---|---|
| Dig Depth | 4108 mm (161.7 in) |
| Vertical Wall | 2991 mm (117.8 in) |
| Maximum Reach - Ground Level | 6949 mm (273.6 in) |
| Maximum Reach | 7141 mm (281.1 in) |
| Maximum Dig Height | 6736 mm (265.2 in) |
| Maximum Dump Clearance | 4760 mm (187.4 in) |
| Boom In Reach | 3059 mm (120.4 in) |
| Tail Swing with Counterweight | 1585 mm (62.4 in) |
| Tail Swing without Counterweight | 1450 mm (57.1 in) |
| Maximum Blade Height | 408 mm (16.1 in) |
| Maximum Blade Depth | 671 mm (26 in) |
| Height - Boom Transport - No Tools* | 2430 mm (95.7 in) |
| Height - Boom Working - With Tools** | 2660 mm (104.7 in) |
| Cab Height | 2541 mm (100 in) |
| Swing Bearing - Height | 756 mm (29.7 in) |
| O/A Undercarriage Length | 3200 mm (126 in) |
| Overall Shipping Length - with Counterweight | 6774 mm (266.7 in) |
| Overall Shipping Length - without Counterweight | 6774 mm (266.7 in) |
| Track Belt/Shoe Width | 450 mm (17.7 in) |
| O/A Track Width | 2470 mm (97.2 in) |
| Ground Clearance | 356 mm (14 in) |
| Stick Length | 1820 mm (71.8 in) |
| Note | *Boom Height when stick is pinned in transport position with no attachments. |
| Note (1) | **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position. |
| Note (2) | ***With blade positioned at the rear of the machine. |
| Dimensions - Long Stick | |
|---|---|
| Dig Depth | 4642 mm (182.8 in) |
| Vertical Wall | 3404 mm (134 in) |
| Maximum Reach - Ground Level | 7460 mm (293.7 in) |
| Maximum Reach | 7637 mm (300.7 in) |
| Maximum Dig Height | 7039 mm (277.1 in) |
| Maximum Dump Clearance | 5072 mm (199.7 in) |
| Boom In Reach | 3215 mm (126.6 in) |
| Tail Swing with Counterweight | 1585 mm (62.4 in) |
| Tail Swing without Counterweight | 1450 mm (57.1 in) |
| Maximum Blade Height | 408 mm (16.1 in) |
| Maximum Blade Depth | 671 mm (26 in) |
| Height - Boom Transport - No Tools* | 2260 mm (89 in) |
| Height - Boom Working - With Tools** | 3050 mm (120.1 in) |
| Cab Height | 2541 mm (100 in) |
| Swing Bearing - Height | 756 mm (29.7 in) |
| O/A Undercarriage Length | 3200 mm (126 in) |
| Overall Shipping Length - with Counterweight | 7052 mm (277.6 in)*** |
| Overall Shipping Length - without Counterweight | 7052 mm (277.6 in)*** |
| Track Belt/Shoe Width | 450 mm (17.7 in) |
| O/A Track Width | 2470 mm (97.2 in) |
| Ground Clearance | 356 mm (14 in) |
| Stick Length | 2358 mm (92.8 in) |
| Note | *Boom Height when stick is pinned in transport position with no attachments. |
| Note (1) | **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position. |
| Note (2) | ***With blade positioned at the rear of the machine. |
| Air Conditioning System | |
|---|---|
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe). |
| Sound | |
|---|---|
| Operator Sound Pressure (ISO 6396:2008) | 72 dB(A) (72 dB(A)) |
| Average Exterior Sound Pressure (ISO 6395:2008) | 99 dB(A) (99 dB(A)) |
| Note | European Union Directive "2000/14/EC" |
| Sustainability | |
|---|---|
| Recyclability | 96% |
| Specifications | |
|---|---|
| Note | The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage. |
Standard Equipment
- ENGINE
- Cat C2.8 Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Fit-For-Life Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC) Aftertreatment System
- 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
- Cab Mirrors (vary by region)
- 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
- TECHNOLOGY (availability varies by region)
- Product Link™ Elite (regulations apply)
- 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
- Lock Out/Tag Out Battery Disconnect
- Ignition Key Stop Switch
- Travel Alarm
- GUARDING
- ROPS ISO 12117-2:2008
- Top Guard ISO 10262:1998 (Level I)
- OTHER
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors
Optional Equipment
- HYDRAULICS
- Third Auxiliary
- OPERATOR ENVIRONMENT
- Push to Start with Bluetooth® Key
- Air Suspension Heated Seat
- Seat Belt Reminder System
- Rain Visor
- Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)
– Touch Screen
– Site Reference System
– High Definition Camera Capable (IP68 & IP69K)
– Numeric Security Code
- TECHNOLOGY (availability varies by region)
- Ease of Use Indicate
- Ease of Use E-Fence
- Ease of Use Laser Catcher
- Cat Grade Advanced 2D
- Cat Grade 3D
- UNDERCARRIAGE
- Wide Dozer Blade
- Steel Tracks (450 mm/17.7 in wide)
- Wide Steel Tracks (600 mm/23.6 in)
- Steel Track with Rubber Pads
- Track Guides
- BOOM, STICK AND LINKAGES
- Long Stick (2360 mm/92.9 in)
- Attachments including Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines with Case Drain
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Certified Lifting Eye
- ELECTRICAL
- Rear and Side Camera
- Rotating Beacon
- GUARDING
- Top Guard ISO 10262:1998 (Level II)
- Front Guard (Mesh) ISO 10262:1998 (Level I)
- Front Guard (Heavy Duty) ISO 10262:1998 (Level II)
- Track Guards
- OTHER
- Counterweight (250 kg/551 lb)
- Counterweight (500 kg/1103 lb)
- Water Jacket Heater
- Refueling Pump
- Variable Angle Boom (refer to 309 CR VAB brochure for VAB specs and additional information)