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308 CR

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Overview

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 70.3 HP 52.4 kW
  • Engine Model Cat C3.3B Cat C3.3B
  • Stroke 4.7 in 120.0 mm
  • Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269 70.3 HP 52.4 kW
  • Bore 3.7 in 94.0 mm
  • Displacement 203.0 in³ 3.33 l
  • Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269 71.5 HP 53.3 kW
  • Gross Power - ISO 14396 74.3 HP 55.4 kW

Weights

  • Operating Weight 20678.0 lb 9380.0 kg
  • Note (1) *Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket. *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 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** 20077.0 lb 9105.0 kg
  • Minimum Operating Weight with Cab* 18610.0 lb 8440.0 kg

Dimensions - Long Stick

  • Dig Depth 183.0 in 4643.0 mm
  • Boom Swing - Left 24.0 in 604.0 mm
  • Maximum Dig Height 277.0 in 7039.0 mm
  • Maximum Blade Height 15.0 in 370.0 mm
  • Track Belt/Shoe Width 18.0 in 450.0 mm
  • Cab Height 100.0 in 2541.0 mm
  • Tail Swing with Counterweight 65.0 in 1645.0 mm
  • O/A Undercarriage Length 113.0 in 2880.0 mm
  • Maximum Dump Clearance 200.0 in 5072.0 mm
  • Transport Height 99.0 in 2522.0 mm
  • Boom Swing - Right 37.0 in 935.0 mm
  • Maximum Blade Depth 16.0 in 407.0 mm
  • Ground Clearance 14.0 in 350.0 mm
  • Stick Length 93.0 in 2358.0 mm
  • Maximum Reach 301.0 in 7637.0 mm
  • Maximum Reach - Ground Level 294.0 in 7460.0 mm
  • O/A Shipping Length 262.0 in 6656.0 mm
  • Boom In Reach 127.0 in 3215.0 mm
  • Swing Bearing - Height 30.0 in 756.0 mm
  • O/A Track Width 91.0 in 2300.0 mm
  • Tail Swing without Counterweight 57.0 in 1450.0 mm
  • Vertical Wall 134.0 in 3404.0 mm

Blade

  • Height 17.0 in 431.0 mm
  • Width - Standard 91.0 in 2300.0 mm
  • Width - Wide 97.0 in 2450.0 mm

Swing System

  • Machine Swing Speed 10.6 r/min 10.6 r/min
  • Boom Swing - Right 50 degrees 50 degrees
  • Boom Swing - Left 60 degrees 60 degrees

Hydraulic System

  • Digging Force - Bucket 13946.0 lb 62.0 kN
  • Operating Pressure - Travel 4134.0 psi 285.0 bar
  • Operating Pressure - Swing 3626.0 psi 250.0 bar
  • Operating Pressure - Equipment 4134.0 psi 285.0 bar
  • Digging Force - Stick - Long 8032.0 lb 35.7 kN
  • Type Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump
  • Auxiliary Circuit - Primary - Pressure 4134.0 psi 285.0 bar
  • Auxiliary Circuit - Primary - Flow 35.0 gal/min 131.0 l/min
  • Pump Flow at 2,400 rpm 44.0 gal/min 167.0 l/min
  • Auxiliary Circuit - Secondary - Flow 9.0 gal/min 33.0 l/min
  • Digging Force - Stick - Standard 9509.0 lb 42.3 kN
  • Auxiliary Circuit - Secondary - Pressure 4134.0 psi 285.0 bar

Dimensions - Standard Stick

  • Cab Height 100.0 in 2541.0 mm
  • Vertical Wall 118.0 in 2991.0 mm
  • Boom In Reach 120.0 in 3059.0 mm
  • Tail Swing with Counterweight 65.0 in 1645.0 mm
  • Boom Swing - Right 37.0 in 935.0 mm
  • Track Belt/Shoe Width 18.0 in 450.0 mm
  • Maximum Reach 281.0 in 7141.0 mm
  • Stick Length 72.0 in 1823.0 mm
  • Transport Height 98.0 in 2487.0 mm
  • Maximum Blade Height 15.0 in 370.0 mm
  • Boom Swing - Left 24.0 in 604.0 mm
  • Maximum Blade Depth 16.0 in 407.0 mm
  • O/A Track Width 91.0 in 2300.0 mm
  • Maximum Dig Height 265.0 in 6736.0 mm
  • Maximum Dump Clearance 187.0 in 4760.0 mm
  • Maximum Reach - Ground Level 274.0 in 6949.0 mm
  • Tail Swing without Counterweight 57.0 in 1450.0 mm
  • O/A Undercarriage Length 113.0 in 2880.0 mm
  • Swing Bearing - Height 30.0 in 756.0 mm
  • Ground Clearance 14.0 in 350.0 mm
  • Dig Depth 162.0 in 4108.0 mm
  • O/A Shipping Length 259.0 in 6571.0 mm

Service Refill Capacities

  • Fuel Tank 39.0 gal (US) 147.0 l
  • Hydraulic System 29.0 gal (US) 110.0 l
  • Hydraulic Tank 14.0 gal (US) 53.0 l
  • Cooling System 2.6 gal (US) 10.0 l
  • Engine Oil 3.0 gal (US) 11.2 l

Travel System

  • Maximum Traction Force - High Speed 6250.0 lb 27.8 kN
  • Ground Pressure - Maximum Weight 5.8 psi 39.8 kPa
  • Ground Pressure - Minimum Weight 5.4 psi 36.9 kPa
  • Travel Speed - High 3.2 mile/h 5.1 km/h
  • Travel Speed - Low 1.9 mile/h 3.1 km/h
  • Maximum Traction Force - Low Speed 15175.0 lb 67.5 kN
  • Gradeability - Maximum 30 degrees 30 degrees

Weight Increase from Minimum Configuration

  • Steel Tracks with Pads 752.0 lb 341.0 kg
  • Counterweight 552.0 lb 250.0 kg
  • Long Stick 146.0 lb 66.0 kg

Certification - Cab

  • Top Guard ISO 10262:1998 (Level II) ISO 10262:1998 (Level II)
  • Roll Over Protective Structure (ROPS) ISO 12117-2:2008 ISO 12117-2:2008
  • Tip Over Protective Structure (TOPS) ISO 12117:1997 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. 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) 72.0 dB(A) 72.0 dB(A)
  • Note European Union Directive “2000/14/EC” European Union Directive “2000/14/EC”
  • Average Exterior Sound Pressure (ISO 6395:2008) 99.0 dB(A) 99.0 dB(A)

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, 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.

308 CR 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 Two Speed Travel
  • Extended Life Coolant, –37° C (–35° F)
  • Radial Seal – Double Element Air Filter
  • Fuel Water Separator with Indicator
  • Ecology Drain
  • Automatic Swing Brake
  • Automatic Engine Shutdown
  • Automatic Engine Idle

HYDRAULICS

  • Load Sensing/Flow Sharing Hydraulics
  • Variable Displacement Piston Pump
  • HYDO Advanced Hydraulic Oil
  • Hydraulic Temperature Monitoring
  • Power On Demand
  • Certified Accumulator
  • Smart Tech Electronic Pump

OPERATOR ENVIRONMENT

  • 12V Power Socket
  • Rear Window Emergency Exit
  • Mounting Bosses for Top and Front Guards
  • Hydraulic Lockout Controls
  • Radio – Bluetooth®, USB, Auxiliary, Microphone
  • Assisted Front Window Overhead Storage
  • Travel Cruise Control
  • Fabric, High Back, Suspension Seat
  • Cup Holder
  • Control Pattern Changer
  • TOPS – ISO 12117:1997
  • Travel Pedals and Hand Levers
  • Literature Holder
  • Removable, Washable Floor Mat
  • Adjustable Wrist Rests
  • LED Interior Light
  • Retractable Seat Belt (75 mm/3 in)
  • ROPS – ISO 12117-2:2008
  • Color LCD Monitor
    – Fuel Level and Coolant Temperature Gauges
    – Maintenance and Machine Monitoring
    – Performance and Machine Adjustments
    – Numeric Security Code
    – Multiple Languages
    – Camera Ready
    – Hour Meter with Wake Up Switch
    – Jog Dial Control Interface
  • Skylight
  • Stick Steer Mode
  • Cat Key with Passcode Option
  • Coat Hook
  • Top Guard – ISO 10262:1998 (Level II)
  • Sealed and Pressurized Cab
  • HVAC with Automatic Temperature Control
  • Integrated Lower Front Window
  • Molded Footrests
  • Operator Sound Pressure 72 dB(A) ISO 6396:2008

UNDERCARRIAGE

  • Dozer Blade
  • Hydraulic Track Adjusters
  • Tie Down Eyes on Track Frame
  • Dozer Float
  • Greased and Lubricated Track
  • Bolt-on, Reversible Wear Edge
  • Rubber Tracks

BOOM, STICK AND LINKAGES

  • One Piece Boom (3400 mm/133.9 in)
  • Standard Stick (1820 mm/71.7 in)
  • Long Stick (2360 mm/92.9 in)
  • Front Shovel Capable (Pin-On/Manual Coupler/Hydraulic Coupler – not available in all regions)
  • Thumb Ready (not available in all regions)
  • Certified Lifting Eye (not available in all regions)

ELECTRICAL

  • 12 Volt Electrical System
  • 60 Ampere Alternator
  • 900 CCA Maintenance Free Battery
  • Circuit Breaker
  • Ignition Key Stop Switch
  • Signaling/Warning Horn
  • Product Link™ Elite Lite (regulations apply)
  • Travel Alarm

308 CR Optional Equipment

OPERATOR ENVIRONMENT

  • Rain Visor
  • Air Suspension Heated Seat

ELECTRICAL

  • Rearview Camera
  • Rotating Beacon

OTHER

  • 2nd Auxiliary Hydraulic Lines with Case Drain
  • Additional Counterweight
  • Boom and Stick Hose Burst Check Valves
  • Bucket Linkage with Lift Eye
  • Track Guides
  • Steel Tracks (450 mm/17.7 in wide)
  • Steel Track with Rubber Pads
  • Wide Steel Tracks (600 mm/23.6 in)
  • Attachments including Buckets, Augers and Hammers
  • Water Jacket Heater
  • Wide Dozer Blade
  • Refueling Pump
  • Variable Angle Boom (please see 308 CR VAB brochure for VAB specs and additional information)
  • Cab Guarding

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