308 CR VAB
308 CR VAB Mini Hydraulic Excavator
The 308 CR VAB Mini Excavator delivers power and performance in an 8 ton size class to help you work in a wide range of applications. The Variable Angle Boom provides even greater machine versatility.
DESCRIPTION
The Cat® 308 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.The Cat® 308 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.See the new Cat 7-10 Ton Mini Excavators in action.
Learn about the features and benefits of the new Cat 7-10 Ton Mini Excavators.
Easy to read monitor lets you adjust machine settings to your operating preference.
Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button.
Learn about the recommended Daily Maintenance and Inspection for the Cat 7 to 10 Ton Mini Excavators in this quick video.
Learn about the Safety Features on the Cat 7 to 10 Ton Mini Excavators in this quick video.
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 help 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.
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).
- Standard Equipment
- Optional Equipment
- Specs
- Docs
Standard Equipment
- ENGINE
- Cat C3.3 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)
- Ecology Drain
- HYDRAULICS
- Smart Tech Electronic Pump
- Electronic Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Power On Demand
- Hydraulic Temperature Monitoring
- Certified Accumulator
- HYDO Advanced Hydraulic Oil
- OPERATOR ENVIRONMENT
- Top Guard ISO 10262 1998 Level I
- ROPS ISO 12117-2:2008
- Sealed and Pressurized Cab
- 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
- Hydraulic Track Adjusters
- Tie Down Eyes on Track Frame
- Dozer Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
- BOOM, STICK AND LINKAGES
- Variable Angle Boom
- 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
- OTHER
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors
Optional Equipment
- OPERATOR ENVIRONMENT
- Push to Start with Bluetooth® Key
- Air Suspension Heated Seat
- 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
- 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
- Attachments including Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Certified Lifting Eye
- ELECTRICAL
- Product Link Elite (regulations apply)
- Travel Alarm
- Rearview Camera
- Rotating Beacon
- GUARDING
- Mesh Front Guard ISO 10262 1998 Level I
- Heavy Duty Front Guard ISO 10262 1998 Level II
- Overhead Cab Guard ISO 10262 1998 Level II
- Polycarbonate Front Window EN356 P5A
- Track Guards
- OTHER
- Additional Counterweight
- Water Jacket Heater
- Refueling Pump
Specs
Overview
Long Name:
308 CR VAB Mini Hydraulic Excavator
Name:
308 CR VAB
Brand:
Caterpillar
Status:
Current
Engine
Net Power
69.5 HP / 51.8 kW
Displacement
203 in³ / 3.33 l
Note
Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
Bore
3.7 in / 94 mm
Gross Power - SAE J1995
74.3 HP / 55.4 kW
Stroke
4.7 in / 120 mm
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC
69.5 HP / 51.8 kW
Engine Model - U.S. EPA Tier 4 Final/EU Stage V
Cat® C3.3B
Weights
Operating Weight
20385 lb / 9245 kg
Note (1)
*Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, blade, and no bucket.
Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, blade, and no bucket.
Maximum Operating Weight with Standard Stick**
20385 lb / 9245 kg
Minimum Operating Weight with Standard Stick*
19084 lb / 8655 kg
Weight Increase from Minimum Configuration
Counterweight
552 lb / 250 kg
Steel Tracks with Pads
752 lb / 341 kg
Travel System
Maximum Traction Force - High Speed
6250 lbf / 27.8 kN
Travel Speed - Low
1.9 mile/h / 3.1 km/h
Ground Pressure - Maximum Weight
5.9 psi / 40.6 kPa
Travel Speed - High
3.2 mile/h / 5.1 km/h
Gradeability - Maximum
30 degrees
Ground Pressure - Minimum Weight
5.5 psi / 37.9 kPa
Maximum Traction Force - Low Speed
15175 lbf / 67.5 kN
Service Refill Capacities
Engine Oil
3 gal (US) / 11.2 l
Cooling System
2.6 gal (US) / 10 l
Hydraulic System
29 gal (US) / 110 l
Hydraulic Tank
14 gal (US) / 53 l
Fuel Tank
39 gal (US) / 147 l
Hydraulic System
Digging Force - Bucket
13946 lbf / 62 kN
Operating Pressure - Equipment
4134 psi / 285 bar
Pump Flow at 2,400 rpm
44 gal/min / 167 l/min
Operating Pressure - Travel
4134 psi / 285 bar
Digging Force - Stick - Standard
9509 lbf / 42.3 kN
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing
3626 psi / 250 bar
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gal/min / 131 l/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gal/min / 33 l/min
Swing System
Machine Swing Speed
10.6 r/min / 10.6 r/min
Boom Swing - Right
50 degrees
Boom Swing - Left
60 degrees
Blade
Height
17 in / 431 mm
Width - Wide
96.5 in / 2450 mm
Width - Standard
90.6 in / 2300 mm
Certification - Cab and Canopy
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Top Guard
ISO 10262:1998 (Level II)
Sound
Operator Sound Pressure (ISO 6396:2008)
72 dB(A) / 72 dB(A)
Note
European Union Directive "2000/14/EC"
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) / 99 dB(A)
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.
Dimensions - VAB In
Dig Depth
150.2 in / 3815 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Maximum Blade Height
14.6 in / 370 mm
Track Belt/Shoe Width
17.7 in / 450 mm
Maximum Dump Clearance
135.8 in / 3450 mm
Vertical Wall
99.2 in / 2520 mm
Boom in Reach
122.8 in / 3120 mm
Ground Clearance
13.8 in / 350 mm
Swing Bearing Height
29.8 in / 756 mm
Boom Swing Right
37 in / 935 mm
Overall Track Width
90.6 in / 2300 mm
Overall Shipping Length
253.9 in / 6450 mm
Transport Height
97.4 in / 2475 mm
Cab Height
100 in / 2541 mm
Overall Undercarriage Length
113.4 in / 2880 mm
Maximum Reach
256.5 in / 6515 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Reach at Ground Level
248 in / 6300 mm
Stick Length
71.7 in / 1820 mm
Maximum Blade Depth
16 in / 407 mm
Boom Swing Left
24 in / 605 mm
Maximum Dig Height
205.5 in / 5220 mm
Dimensions - VAB Out
Dig Depth
136.2 in / 3460 mm
Overall Shipping Length
253.9 in / 6450 mm
Stick Length
71.7 in / 1820 mm
Track Belt/Shoe Width
17.7 in / 450 mm
Swing Bearing Height
29.8 in / 756 mm
Maximum Blade Depth
16 in / 407 mm
Maximum Reach at Ground Level
303.7 in / 7715 mm
Transport Height
97.4 in / 2475 mm
Boom in Reach
106.7 in / 2710 mm
Overall Undercarriage Length
113.4 in / 2880 mm
Maximum Reach
310.4 in / 7885 mm
Maximum Dump Clearance
247.4 in / 6285 mm
Ground Clearance
13.8 in / 350 mm
Vertical Wall
146.7 in / 3725 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Boom Swing Left
24 in / 605 mm
Maximum Blade Height
14.6 in / 370 mm
Cab Height
100 in / 2541 mm
Maximum Dig Height
322 in / 8180 mm
Boom Swing Right
37 in / 935 mm
Overall Track Width
90.6 in / 2300 mm
Sustainability
Recyclability
96%
- 308 CR VAB Product Brochure (pdf)
- Cat Mini Hydraulic Excavators Product Line Brochure (North America) (pdf)
- Cat Mini Hydraulic Excavators Product Line Brochure (Europe) (pdf)
- Options And Accessories Kit Guide for Mini Hydraulic Excavators (pdf)
- Cat Attachments for Mini Excavators Brochure (pdf)
- Attachment Compatibility Guide for Mini Excavators (pdf)
- Cat Mini Hydraulic Excavators Product Line Brochure (Europe) (pdf)
SEE HOW 308 CR VAB COMPARES AGAINST FREQUENTLY COMPARED PRODUCTS.
Mini Excavators
308 CR VAB
- Brand
- Caterpillar
- Status
- Current
- Net Power
- 69.5 HP / 51.8 kW
- Displacement
- 203 in³ / 3.33 l
- Note
- European Union Directive "2000/14/EC"
- Bore
- 3.7 in / 94 mm
- Gross Power - SAE J1995
- 74.3 HP / 55.4 kW
- Stroke
- 4.7 in / 120 mm
- Operating Weight
- 20385 lb / 9245 kg
- Note (1)
- *Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, blade, and no bucket.
- Note (2)
- **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, blade, and no bucket.
- Counterweight
- 552 lb / 250 kg
- Steel Tracks with Pads
- 752 lb / 341 kg
- Maximum Traction Force - High Speed
- 6250 lbf / 27.8 kN
- Travel Speed - Low
- 1.9 mile/h / 3.1 km/h
- Ground Pressure - Maximum Weight
- 5.9 psi / 40.6 kPa
- Travel Speed - High
- 3.2 mile/h / 5.1 km/h
- Gradeability - Maximum
- 30 degrees
- Ground Pressure - Minimum Weight
- 5.5 psi / 37.9 kPa
- Maximum Traction Force - Low Speed
- 15175 lbf / 67.5 kN
- Engine Oil
- 3 gal (US) / 11.2 l
- Cooling System
- 2.6 gal (US) / 10 l
- Hydraulic System
- 29 gal (US) / 110 l
- Hydraulic Tank
- 14 gal (US) / 53 l
- Fuel Tank
- 39 gal (US) / 147 l
- Digging Force - Bucket
- 13946 lbf / 62 kN
- Operating Pressure - Equipment
- 4134 psi / 285 bar
- Pump Flow at 2,400 rpm
- 44 gal/min / 167 l/min
- Operating Pressure - Travel
- 4134 psi / 285 bar
- Digging Force - Stick - Standard
- 9509 lbf / 42.3 kN
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
- Operating Pressure - Swing
- 3626 psi / 250 bar
- Maximum Auxiliary Circuit - Primary - Pressure at Pump
- 4134 psi / 285 bar
- Maximum Auxiliary Circuit - Secondary - Pressure at Pump
- 4134 psi / 285 bar
- Maximum Auxiliary Circuit - Primary - Flow at Pump
- 35 gal/min / 131 l/min
- Maximum Auxiliary Circuit - Secondary - Flow at Pump
- 9 gal/min / 33 l/min
- Machine Swing Speed
- 10.6 r/min / 10.6 r/min
- Boom Swing - Right
- 50 degrees
- Boom Swing - Left
- 60 degrees
- Height
- 17 in / 431 mm
- Width - Wide
- 96.5 in / 2450 mm
- Width - Standard
- 90.6 in / 2300 mm
- Roll Over Protective Structure (ROPS)
- ISO 12117-2:2008
- Tip Over Protective Structure (TOPS)
- ISO 12117:1997
- Top Guard
- ISO 10262:1998 (Level II)
- 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)
- 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.
- Dig Depth
- 136.2 in / 3460 mm
- Tail Swing with Counterweight
- 62.4 in / 1585 mm
- Maximum Blade Height
- 14.6 in / 370 mm
- Track Belt/Shoe Width
- 17.7 in / 450 mm
- Maximum Dump Clearance
- 247.4 in / 6285 mm
- Vertical Wall
- 146.7 in / 3725 mm
- Ground Clearance
- 13.8 in / 350 mm
- Cab Height
- 100 in / 2541 mm
- Maximum Reach
- 310.4 in / 7885 mm
- Tail Swing without Counterweight
- 57.1 in / 1450 mm
- Stick Length
- 71.7 in / 1820 mm
- Maximum Blade Depth
- 16 in / 407 mm
- Maximum Dig Height
- 322 in / 8180 mm
- Recyclability
- 96%
Selected Model
Mini Excavators
308 CR
- Brand
- Caterpillar
- Status
- Current
- Net Power
- 69.5 HP / 51.8 kW
- Displacement
- 203 in³ / 3.33 l
- Note
- *Boom Height when stick is pinned in transport position with no attachments.
- Bore
- 3.7 in / 94 mm
- Gross Power - SAE J1995
- 74.3 HP / 55.4 kW
- Stroke
- 4.7 in / 120 mm
- Operating Weight
- 20077 lb / 9105 kg
- 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.
- Counterweight
- 552 lb / 250 kg
- Steel Tracks with Pads
- 752 lb / 341 kg
- Maximum Traction Force - High Speed
- 6250 lb / 27.8 kN
- Travel Speed - Low
- 1.9 mile/h / 3.1 km/h
- Ground Pressure - Maximum Weight
- 5.8 psi / 39.8 kPa
- Travel Speed - High
- 3.2 mile/h / 5.1 km/h
- Gradeability - Maximum
- 30 degrees
- Ground Pressure - Minimum Weight
- 5.4 psi / 36.9 kPa
- Maximum Traction Force - Low Speed
- 15175 lb / 67.5 kN
- Engine Oil
- 3 gal (US) / 11.2 l
- Cooling System
- 2.6 gal (US) / 10 l
- Hydraulic System
- 29 gal (US) / 110 l
- Hydraulic Tank
- 14 gal (US) / 53 l
- Fuel Tank
- 39 gal (US) / 147 l
- Digging Force - Bucket
- 13946 lb / 62 kN
- Operating Pressure - Equipment
- 4134 psi / 285 bar
- Pump Flow at 2,400 rpm
- 44 gal/min / 167 l/min
- Operating Pressure - Travel
- 4134 psi / 285 bar
- Digging Force - Stick - Standard
- 9509 lb / 42.3 kN
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
- Operating Pressure - Swing
- 3626 psi / 250 bar
- Maximum Auxiliary Circuit - Primary - Pressure at Pump
- 4134 psi / 285 bar
- Maximum Auxiliary Circuit - Secondary - Pressure at Pump
- 4134 psi / 285 bar
- Maximum Auxiliary Circuit - Primary - Flow at Pump
- 35 gal/min / 131 l/min
- Maximum Auxiliary Circuit - Secondary - Flow at Pump
- 9 gal/min / 33 l/min
- Machine Swing Speed
- 10.6 r/min / 10.6 r/min
- Boom Swing - Right
- 36.8 in / 935 mm
- Boom Swing - Left
- 60 degrees
- Height
- 17 in / 431 mm
- Width - Wide
- 96.5 in / 2450 mm
- Width - Standard
- 90.6 in / 2300 mm
- Roll Over Protective Structure (ROPS)
- ISO 12117-2:2008
- Tip Over Protective Structure (TOPS)
- ISO 12117:1997
- Top Guard
- ISO 10262:1998 (Level I)
- 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)
- 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.
- Dig Depth
- 182.8 in / 4643 mm
- Tail Swing with Counterweight
- 62.4 in / 1585 mm
- Maximum Blade Height
- 14.6 in / 370 mm
- Track Belt/Shoe Width
- 17.7 in / 450 mm
- Maximum Dump Clearance
- 199.7 in / 5072 mm
- Vertical Wall
- 134 in / 3404 mm
- Ground Clearance
- 13.8 in / 350 mm
- Cab Height
- 100 in / 2541 mm
- Maximum Reach
- 300.7 in / 7637 mm
- Tail Swing without Counterweight
- 57.1 in / 1450 mm
- Stick Length
- 92.8 in / 2358 mm
- Maximum Blade Depth
- 16 in / 407 mm
- Maximum Dig Height
- 277.1 in / 7039 mm
- Recyclability
- 96%
Mini Excavators
309 CR
- Brand
- Caterpillar
- Status
- Current
- Net Power
- 69.5 HP / 51.8 kW
- Displacement
- 203 in³ / 3.33 l
- Note
- *Boom Height when stick is pinned in transport position with no attachments.
- Bore
- 3.7 in / 94 mm
- Gross Power - SAE J1995
- 74.3 HP / 55.4 kW
- Stroke
- 4.7 in / 120 mm
- Operating Weight
- 21091 lb / 9565 kg
- 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.
- Counterweight
- 552 lb / 250 kg
- Steel Tracks with Pads
- 728 lb / 330 kg
- Maximum Traction Force - High Speed
- 6497 lb / 28.9 kN
- Travel Speed - Low
- 1.6 mile/h / 2.6 km/h
- Ground Pressure - Maximum Weight
- 5.4 psi / 37.1 kPa
- Travel Speed - High
- 3.1 mile/h / 4.9 km/h
- Gradeability - Maximum
- 30 degrees
- Ground Pressure - Minimum Weight
- 5 psi / 34.7 kPa
- Maximum Traction Force - Low Speed
- 19064 lb / 84.8 kN
- Engine Oil
- 3 gal (US) / 11.2 l
- Cooling System
- 2.6 gal (US) / 10 l
- Hydraulic System
- 29 gal (US) / 110 l
- Hydraulic Tank
- 14 gal (US) / 53 l
- Fuel Tank
- 39 gal (US) / 147 l
- Digging Force - Bucket
- 13943 lb / 62 kN
- Operating Pressure - Equipment
- 4134 psi / 285 bar
- Pump Flow at 2,400 rpm
- 62 gal/min / 233 l/min
- Operating Pressure - Travel
- 4134 psi / 285 bar
- Digging Force - Stick - Standard
- 9500 lb / 42.3 kN
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
- Operating Pressure - Swing
- 3626 psi / 250 bar
- Maximum Auxiliary Circuit - Primary - Pressure at Pump
- 4134 psi / 285 bar
- Maximum Auxiliary Circuit - Secondary - Pressure at Pump
- 4134 psi / 285 bar
- Maximum Auxiliary Circuit - Primary - Flow at Pump
- 35 gal/min / 131 l/min
- Maximum Auxiliary Circuit - Secondary - Flow at Pump
- 9 gal/min / 33 l/min
- Machine Swing Speed
- 10.6 r/min / 10.6 r/min
- Boom Swing - Right
- 36.8 in / 935 mm
- Boom Swing - Left
- 23.8 in / 604 mm
- Height
- 17 in / 431 mm
- Width - Wide
- 104 in / 2640 mm
- Width - Standard
- 97 in / 2470 mm
- Roll Over Protective Structure (ROPS)
- ISO 12117-2:2008
- Tip Over Protective Structure (TOPS)
- ISO 12117:1997
- Top Guard
- ISO 10262:1998 (Level I)
- 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)
- 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.
- Dig Depth
- 161.7 in / 4108 mm
- Tail Swing with Counterweight
- 62.4 in / 1585 mm
- Maximum Blade Height
- 16.1 in / 408 mm
- Track Belt/Shoe Width
- 17.7 in / 450 mm
- Maximum Dump Clearance
- 199.7 in / 5072 mm
- Vertical Wall
- 134 in / 3404 mm
- Ground Clearance
- 14 in / 356 mm
- Cab Height
- 100 in / 2541 mm
- Maximum Reach
- 300.7 in / 7637 mm
- Tail Swing without Counterweight
- 57.1 in / 1450 mm
- Stick Length
- 92.8 in / 2358 mm
- Maximum Blade Depth
- 26 in / 671 mm
- Maximum Dig Height
- 277.1 in / 7039 mm
- Recyclability
- 96%