308 CR Mini Hydraulic Excavator
The Cat® 308 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
- 69.5HP
- Engine Model
- Cat C3.3B
- Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
- 69.5HP
- Gross Power - SAE J1995
- 74.3HP
- Stroke
- 4.7in
- Bore
- 3.7in
- Displacement
- 203in³
Weights
- Operating Weight
- 20077lb
- Note (1)
- *Minimum Weight is based on rubber 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.
- Maximum Operating Weight with Cab**
- 20077lb
- Minimum Operating Weight with Cab*
- 18610lb
Dimensions - Long Stick
- Dig Depth
- 182.8in
- Boom Swing - Left
- 23.8in
- Maximum Dig Height
- 277.1in
- Maximum Blade Height
- 14.6in
- Track Belt/Shoe Width
- 17.7in
- Cab Height
- 100in
- Tail Swing with Counterweight
- 62.4in
- O/A Undercarriage Length
- 113.4in
- Maximum Dump Clearance
- 199.7in
- Boom Swing - Right
- 36.8in
- Maximum Blade Depth
- 16in
- Ground Clearance
- 13.8in
- Stick Length
- 92.8in
- Maximum Reach
- 300.7in
- Maximum Reach - Ground Level
- 293.7in
- Boom In Reach
- 126.6in
- Swing Bearing - Height
- 29.7in
- O/A Track Width
- 90.6in
- Tail Swing without Counterweight
- 57.1in
- Vertical Wall
- 134in
- 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*
- 89in
- Height - Boom Working - With Tools**
- 120.1in
- Overall Shipping Length - without Counterweight
- 6872 mm (270.6 in)***
- Overall Shipping Length - with Counterweight
- 6872 mm (270.6 in)***
Blade
- Height
- 17in
- Width - Standard
- 90.6in
- Width - Wide
- 96.5in
Hydraulic System
- Maximum Auxiliary Circuit - Secondary - Flow at Pump
- 9gal/min
- Maximum Auxiliary Circuit - Primary - Flow at Pump
- 35gal/min
- Maximum Auxiliary Circuit - Secondary - Pressure at Pump
- 4134psi
- Maximum Auxiliary Circuit - Primary - Pressure at Pump
- 4134psi
- Note
- Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
- Digging Force - Bucket
- 13946lb
- Operating Pressure - Travel
- 4134psi
- Operating Pressure - Swing
- 3626psi
- Operating Pressure - Equipment
- 4134psi
- Digging Force - Stick - Long
- 8032lb
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
- Pump Flow at 2,400 rpm
- 44gal/min
- Digging Force - Stick - Standard
- 9509lb
Swing System
- Machine Swing Speed
- 10.6r/min
- Boom Swing - Right
- 50 degrees
- Boom Swing - Left
- 60 degrees
Dimensions - Standard Stick
- Cab Height
- 100in
- Vertical Wall
- 117.8in
- Boom In Reach
- 120.4in
- Tail Swing with Counterweight
- 62.4in
- Boom Swing - Right
- 36.8in
- Track Belt/Shoe Width
- 17.7in
- Maximum Reach
- 281.1in
- Stick Length
- 71.7in
- Maximum Blade Height
- 14.6in
- Boom Swing - Left
- 23.8in
- Maximum Blade Depth
- 16in
- O/A Track Width
- 90.6in
- Maximum Dig Height
- 265.2in
- Maximum Dump Clearance
- 187.4in
- Maximum Reach - Ground Level
- 273.6in
- Tail Swing without Counterweight
- 57.1in
- O/A Undercarriage Length
- 113.4in
- Swing Bearing - Height
- 29.7in
- Ground Clearance
- 13.8in
- Dig Depth
- 161.7in
- Note
- *Boom Height when stick is pinned in transport position with no attachments.
- Overall Shipping Length - with Counterweight
- 264in
- Note (1)
- **Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
- Overall Shipping Length - without Counterweight
- 258.8in
- Note (2)
- ***With blade positioned at the rear of the machine.
- Height - Boom Working - With Tools**
- 104.7in
- Height - Boom Transport - No Tools*
- 95.7in
Service Refill Capacities
- Fuel Tank
- 39gal (US)
- Hydraulic System
- 29gal (US)
- Hydraulic Tank
- 14gal (US)
- Cooling System
- 2.6gal (US)
- Engine Oil
- 3gal (US)
Travel System
- Maximum Traction Force - High Speed
- 6250lb
- Ground Pressure - Maximum Weight
- 5.8psi
- Ground Pressure - Minimum Weight
- 5.4psi
- Travel Speed - High
- 3.2mile/h
- Travel Speed - Low
- 1.9mile/h
- Maximum Traction Force - Low Speed
- 15175lb
- Gradeability - Maximum
- 30 degrees
Weight Increase from Minimum Configuration
- Steel Tracks with Pads
- 752lb
- Counterweight
- 552lb
- Long Stick
- 146lb
Certification - Cab
- Top Guard
- ISO 10262:1998 (Level I)
- Roll Over Protective Structure (ROPS)
- ISO 12117-2:2008
- Tip Over Protective Structure (TOPS)
- ISO 12117:1997
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.
Sound
- Operator Sound Pressure (ISO 6396:2008)
- 72dB(A)
- Note
- European Union Directive "2000/14/EC"
- Average Exterior Sound Pressure (ISO 6395:2008)
- 99dB(A)
Sustainability
- Recyclability
- 96%
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 Cat Stick Steer. 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 blade float 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).
*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)
