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308 CR
308 CR
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
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Air ConditioningThe 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
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Height17 in 431 mm
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Width - Standard90.6 in 2300 mm
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Width - Wide96.5 in 2450 mm
Certification - Cab
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Top GuardISO 10262:1998 (Level I)
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Roll Over Protective Structure (ROPS)ISO 12117-2:2008
Dimensions - Long Stick
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Dig Depth182.8 in 4643 mm
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Boom Swing - Left23.8 in 604 mm
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Maximum Dig Height277.1 in 7039 mm
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Maximum Blade Height14.6 in 370 mm
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Track Belt/Shoe Width17.7 in 450 mm
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Cab Height100 in 2541 mm
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Tail Swing with Counterweight62.4 in 1585 mm
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O/A Undercarriage Length113.4 in 2880 mm
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Maximum Dump Clearance199.7 in 5072 mm
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Boom Swing - Right36.8 in 935 mm
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Maximum Blade Depth16 in 407 mm
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Ground Clearance13.8 in 350 mm
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Stick Length92.8 in 2358 mm
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Maximum Reach300.7 in 7637 mm
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Maximum Reach - Ground Level293.7 in 7460 mm
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Boom In Reach126.6 in 3215 mm
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Swing Bearing - Height29.7 in 756 mm
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O/A Track Width90.6 in 2300 mm
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Tail Swing without Counterweight57.1 in 1450 mm
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Vertical Wall134 in 3404 mm
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Note*Boom Height when stick is pinned in transport position with no attachments.
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Note (2)***With blade positioned at the rear of the machine.
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Note (1)**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
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Height - Boom Transport - No Tools*89 in 2260 mm
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Height - Boom Working - With Tools**120.1 in 3050 mm
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Overall Shipping Length - without Counterweight6872 mm (270.6 in)***
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Overall Shipping Length - with Counterweight6872 mm (270.6 in)***
Dimensions - Standard Stick
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Cab Height100 in 2541 mm
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Vertical Wall117.8 in 2991 mm
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Boom In Reach120.4 in 3059 mm
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Tail Swing with Counterweight62.4 in 1585 mm
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Boom Swing - Right36.8 in 935 mm
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Track Belt/Shoe Width17.7 in 450 mm
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Maximum Reach281.1 in 7141 mm
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Stick Length71.7 in 1820 mm
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Maximum Blade Height14.6 in 370 mm
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Boom Swing - Left23.8 in 604 mm
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Maximum Blade Depth16 in 407 mm
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O/A Track Width90.6 in 2300 mm
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Maximum Dig Height265.2 in 6736 mm
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Maximum Dump Clearance187.4 in 4760 mm
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Maximum Reach - Ground Level273.6 in 6949 mm
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Tail Swing without Counterweight57.1 in 1450 mm
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O/A Undercarriage Length113.4 in 2880 mm
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Swing Bearing - Height29.7 in 756 mm
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Ground Clearance13.8 in 350 mm
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Dig Depth161.7 in 4108 mm
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Note*Boom Height when stick is pinned in transport position with no attachments.
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Overall Shipping Length - with Counterweight264 in 6706 mm
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Note (1)**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
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Overall Shipping Length - without Counterweight258.8 in 6574 mm
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Note (2)***With blade positioned at the rear of the machine.
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Height - Boom Working - With Tools**104.7 in 2660 mm
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Height - Boom Transport - No Tools*95.7 in 2430 mm
Engine
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Net Power69.5 hp 51.8 kW
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Engine ModelCat C3.3B
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Stroke4.7 in 120 mm
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Bore3.7 in 94 mm
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Gross Power - SAE J1995:201474.3 hp 55.4 kW
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Displacement203 in³ 3.33 l
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Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/126969.5 hp 51.8 kW
Hydraulic System
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Digging Force - Bucket13946 lb 62 kN
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Operating Pressure - Travel4134 psi 285 bar
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Operating Pressure - Swing3626 psi 250 bar
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Operating Pressure - Equipment4134 psi 285 bar
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Digging Force - Stick - Long8032 lb 35.7 kN
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TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump
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NoteFlow and pressure are not combinable. Under load, as flow rises pressure goes down.
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Pump Flow at 2,400 rpm44 gal/min 167 l/min
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Digging Force - Stick - Standard9509 lb 42.3 kN
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Maximum Auxiliary Circuit - Primary - Pressure at Pump4134 psi 285 bar
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Maximum Auxiliary Circuit - Secondary - Pressure at Pump4134 psi 285 bar
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Maximum Auxiliary Circuit - Primary - Flow at Pump35 gal/min 131 l/min
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Maximum Auxiliary Circuit - Secondary - Flow at Pump9 gal/min 33 l/min
Service Refill Capacities
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Fuel Tank39 gal (US) 147 l
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Hydraulic System29 gal (US) 110 l
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Hydraulic Tank14 gal (US) 53 l
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Cooling System2.6 gal (US) 10 l
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Engine Oil3 gal (US) 11.2 l
Sound
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Operator Sound Pressure (ISO 6396:2008)72 dB(A) 72 dB(A)
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NoteEuropean Union Directive "2000/14/EC"
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Average Exterior Sound Pressure (ISO 6395:2008)99 dB(A) 99 dB(A)
Sustainability
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Recyclability96%
Swing System
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Machine Swing Speed10.6 r/min 10.6 r/min
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Boom Swing - Right50 degrees
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Boom Swing - Left60 degrees
Travel System
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Maximum Traction Force - High Speed6250 lb 27.8 kN
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Ground Pressure - Maximum Weight5.5 psi 37.6 kPa
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Ground Pressure - Minimum Weight4.9 psi 33.8 kPa
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Travel Speed - High3.2 mile/h 5.1 km/h
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Travel Speed - Low1.9 mile/h 3.1 km/h
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Maximum Traction Force - Low Speed15175 lb 67.5 kN
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Gradeability - Maximum30 degrees
Weight Increase from Minimum Configuration
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Steel Tracks with Pads752 lb 341 kg
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Counterweight552 lb 250 kg
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Long Stick146 lb 66 kg
Weights
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Operating Weight18493 lb 8387 kg
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Note (1)*Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
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Note (2)**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
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Maximum Operating Weight with Cab**18493 lb 8387 kg
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Minimum Operating Weight with Cab*16542 lb 7502 kg
Benefits
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
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.
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).
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.
SAFETY ON THE JOB SITE
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.
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!
Equipment Info
ENGINE
Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
HYDRAULICS
Electronic Variable Displacement Piston Pump
OPERATOR ENVIRONMENT
Top Guard ISO 10262 1998 Level I
UNDERCARRIAGE
Greased and Lubricated Track
BOOM, STICK AND LINKAGES
One Piece Boom (3400 mm/133.9 in)
ELECTRICAL
12 Volt Electrical System
OTHER
Locks on External Enclosure Doors
TECHNOLOGY
Product Link Basic
