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Home New Excavators 308 CR Mini Hydraulic Excavator

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.

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Engine

Net Power 69.5hp
Engine Model Cat C3.3B
Stroke 4.7in
Gross Power - SAE J1995:2014 74.3hp
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 69.5hp
Bore 3.7in
Displacement 203in³

Weights

Operating Weight 18493lb
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** 18493lb
Minimum Operating Weight with Cab* 16542lb

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
Note *Boom Height when stick is pinned in transport position with no attachments.
Maximum Dump Clearance 199.7in
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)***
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

Blade

Height 17in
Width - Standard 90.6in
Width - Wide 96.5in

Sustainability

Recyclability 96%

Swing System

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

Hydraulic System

Digging Force - Bucket 13946lb
Operating Pressure - Travel 4134psi
Operating Pressure - Swing 3626psi
Operating Pressure - Equipment 4134psi
Digging Force - Stick - Long 8032lb
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Primary - Pressure at Pump 4134psi
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 4134psi
Maximum Auxiliary Circuit - Primary - Flow at Pump 35gpm
Maximum Auxiliary Circuit - Secondary - Flow at Pump 9gpm
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm 44gpm
Digging Force - Stick - Standard 9509lb

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
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
Track Belt/Shoe Width 17.7in
Note (2) ***With blade positioned at the rear of the machine.
Height - Boom Working - With Tools** 104.7in
Maximum Reach 281.1in
Height - Boom Transport - No Tools* 95.7in
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

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 5.5psi
Ground Pressure - Minimum Weight 4.9psi
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

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)

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
  • Technology
    • Product Link Basic

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
    • Long Stick (2360 mm/92.9 in)
    • 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
    • Variable Angle Boom (refer to 308 CR VAB brochure for VAB specs and additional information)
  • Technology
    • Ease of Use Indicate
    • Ease of Use E-Fence
    • Cat Grade Advanced 2D
    • Cat Grade 3D
    • Product Link Elite (regulations apply)