308 CR

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.

Category:

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‚Äôve 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
  • 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
  • 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
OTHER
  • Locks on External Enclosure Doors
  • Lockable Fuel Cap
  • Beacon Socket
  • Rear Reflectors

Additional information

Offering Type

Engine - Net Power

51.8 kW ( 69.5 HP )

Engine Model

Cat C3.3B

Engine - Stroke

120 mm ( 4.7 in )

Engine - Bore

94 mm ( 3.7 in )

Engine - Gross Power - SAE J1995

55.4 kW ( 74.3 HP )

Engine - Displacement

3.33 l ( 203 in³ )

Engine - Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269

51.8 kW ( 69.5 HP )

Weights - Operating Weight

9105 kg ( 20077 lb )

Weights - Note (1)

*Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.

Weights - Note (2)

**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.

Weights - Maximum Operating Weight with Cab**

9105 kg ( 20077 lb )

Weights - Minimum Operating Weight with Cab*

8440 kg ( 18610 lb )

Weight Increase from Minimum Configuration - Steel Tracks with Pads

341 kg ( 752 lb )

Weight Increase from Minimum Configuration - Counterweight

250 kg ( 552 lb )

Weight Increase from Minimum Configuration - Long Stick

66 kg ( 146 lb )

Travel System - Maximum Traction Force - High Speed

27.8 kN ( 6250 lb )

Travel System - Ground Pressure - Maximum Weight

39.8 kPa ( 5.8 psi )

Travel System - Ground Pressure - Minimum Weight

36.9 kPa ( 5.4 psi )

Travel System - Travel Speed - High

5.1 km/h ( 3.2 mile/h )

Travel System - Travel Speed - Low

3.1 km/h ( 1.9 mile/h )

Travel System - Maximum Traction Force - Low Speed

67.5 kN ( 15175 lb )

Travel System - Gradeability - Maximum

30 degrees

Service Refill Capacities - Fuel Tank

147 l ( 39 gal (US) )

Service Refill Capacities - Hydraulic System

110 l ( 29 gal (US) )

Service Refill Capacities - Hydraulic Tank

53 l ( 14 gal (US) )

Service Refill Capacities - Cooling System

10 l ( 2.6 gal (US) )

Service Refill Capacities - Engine Oil

11.2 l ( 3 gal (US) )

Hydraulic System - Digging Force - Bucket

62 kN ( 13946 lb )

Hydraulic System - Operating Pressure - Travel

285 bar ( 4134 psi )

Hydraulic System - Operating Pressure - Swing

250 bar ( 3626 psi )

Hydraulic System - Operating Pressure - Equipment

285 bar ( 4134 psi )

Hydraulic System - Digging Force - Stick - Long

35.7 kN ( 8032 lb )

Hydraulic System - Type

Load Sensing Hydraulics with Variable Displacement Piston Pump

Hydraulic System - Note

Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Hydraulic System - Pump Flow at 2,400 rpm

167 l/min ( 44 gal/min )

Hydraulic System - Digging Force - Stick - Standard

42.3 kN ( 9509 lb )

Hydraulic System - Maximum Auxiliary Circuit - Primary - Pressure at Pump

285 bar ( 4134 psi )

Hydraulic System - Maximum Auxiliary Circuit - Secondary - Pressure at Pump

285 bar ( 4134 psi )

Hydraulic System - Maximum Auxiliary Circuit - Primary - Flow at Pump

131 l/min ( 35 gal/min )

Hydraulic System - Maximum Auxiliary Circuit - Secondary - Flow at Pump

33 l/min ( 9 gal/min )

Swing System - Machine Swing Speed

10.6 r/min ( 10.6 r/min )

Swing System - Boom Swing - Right

50 degrees

Blade - Height

431 mm ( 17 in )

Blade - Width - Standard

2300 mm ( 90.6 in )

Blade - Width - Wide

2450 mm ( 96.5 in )

Certification - Cab - Top Guard

ISO 10262:1998 (Level I)

Certification - Cab - Roll Over Protective Structure (ROPS)

ISO 12117-2:2008

Certification - Cab - Tip Over Protective Structure (TOPS)

ISO 12117:1997

Operator Sound Pressure (ISO 6396:2008)

72 dB(A) ( 72 dB(A) )

Sound - Note

European Union Directive "2000/14/EC"

Average Exterior Sound Pressure (ISO 6395:2008)

99 dB(A) ( 99 dB(A) )

Dimensions - Standard Stick - Cab Height

2541 mm ( 100 in )

Dimensions - Standard Stick - Vertical Wall

2991 mm ( 117.8 in )

Dimensions - Standard Stick - Boom In Reach

3059 mm ( 120.4 in )

Dimensions - Standard Stick - Tail Swing with Counterweight

1585 mm ( 62.4 in )

Dimensions - Standard Stick - Boom Swing - Right

935 mm ( 36.8 in )

Dimensions - Standard Stick - Track Belt/Shoe Width

450 mm ( 17.7 in )

Dimensions - Standard Stick - Maximum Reach

7141 mm ( 281.1 in )

Dimensions - Standard Stick - Stick Length

1820 mm ( 71.7 in )

Dimensions - Standard Stick - Maximum Blade Height

370 mm ( 14.6 in )

Dimensions - Standard Stick - Boom Swing - Left

604 mm ( 23.8 in )

Dimensions - Standard Stick - Maximum Blade Depth

407 mm ( 16 in )

Dimensions - Standard Stick - O/A Track Width

2300 mm ( 90.6 in )

Dimensions - Standard Stick - Maximum Dig Height

6736 mm ( 265.2 in )

Dimensions - Standard Stick - Maximum Dump Clearance

4760 mm ( 187.4 in )

Dimensions - Standard Stick - Maximum Reach - Ground Level

6949 mm ( 273.6 in )

Dimensions - Standard Stick - Tail Swing without Counterweight

1450 mm ( 57.1 in )

Dimensions - Standard Stick - O/A Undercarriage Length

2880 mm ( 113.4 in )

Dimensions - Standard Stick - Swing Bearing - Height

756 mm ( 29.7 in )

Dimensions - Standard Stick - Ground Clearance

350 mm ( 13.8 in )

Dimensions - Standard Stick - Dig Depth

4108 mm ( 161.7 in )

Dimensions - Standard Stick - Note

*Boom Height when stick is pinned in transport position with no attachments.

Dimensions - Standard Stick - Overall Shipping Length - with Counterweight

6706 mm ( 264 in )

Dimensions - Standard Stick - Note (1)

**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.

Dimensions - Standard Stick - Overall Shipping Length - without Counterweight

6574 mm ( 258.8 in )

Dimensions - Standard Stick - Note (2)

***With blade positioned at the rear of the machine.

Dimensions - Standard Stick - Height - Boom Working - With Tools**

2660 mm ( 104.7 in )

Dimensions - Standard Stick - Height - Boom Transport - No Tools*

2430 mm ( 95.7 in )

Dimensions - Long Stick - Dig Depth

4643 mm ( 182.8 in )

Dimensions - Long Stick - Boom Swing - Left

604 mm ( 23.8 in )

Dimensions - Long Stick - Maximum Dig Height

7039 mm ( 277.1 in )

Dimensions - Long Stick - Maximum Blade Height

370 mm ( 14.6 in )

Dimensions - Long Stick - Track Belt/Shoe Width

450 mm ( 17.7 in )

Dimensions - Long Stick - Cab Height

2541 mm ( 100 in )

Dimensions - Long Stick - Tail Swing with Counterweight

1585 mm ( 62.4 in )

Dimensions - Long Stick - O/A Undercarriage Length

2880 mm ( 113.4 in )

Dimensions - Long Stick - Maximum Dump Clearance

5072 mm ( 199.7 in )

Dimensions - Long Stick - Boom Swing - Right

935 mm ( 36.8 in )

Dimensions - Long Stick - Maximum Blade Depth

407 mm ( 16 in )

Dimensions - Long Stick - Ground Clearance

350 mm ( 13.8 in )

Dimensions - Long Stick - Stick Length

2358 mm ( 92.8 in )

Dimensions - Long Stick - Maximum Reach

7637 mm ( 300.7 in )

Dimensions - Long Stick - Maximum Reach - Ground Level

7460 mm ( 293.7 in )

Dimensions - Long Stick - Boom In Reach

3215 mm ( 126.6 in )

Dimensions - Long Stick - Swing Bearing - Height

756 mm ( 29.7 in )

Dimensions - Long Stick - O/A Track Width

2300 mm ( 90.6 in )

Dimensions - Long Stick - Tail Swing without Counterweight

1450 mm ( 57.1 in )

Dimensions - Long Stick - Vertical Wall

3404 mm ( 134 in )

Dimensions - Long Stick - Note

*Boom Height when stick is pinned in transport position with no attachments.

Dimensions - Long Stick - Note (2)

***With blade positioned at the rear of the machine.

Dimensions - Long Stick - Note (1)

**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.

Dimensions - Long Stick - Height - Boom Transport - No Tools*

2260 mm ( 89 in )

Dimensions - Long Stick - Height - Boom Working - With Tools**

3050 mm ( 120.1 in )

Dimensions - Long Stick - Overall Shipping Length - without Counterweight

6872 mm (270.6 in)***

Dimensions - Long Stick - Overall Shipping Length - with Counterweight

6872 mm (270.6 in)***

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.

Swing System - Boom Swing - Left

60 degrees

Sustainability - Recyclability

96%

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