308 CR Mini Hydraulic Excavator

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)

Engine
Net Power 51.8 kW (69.5 hp)
Engine Model Cat C3.3B
Stroke 120 mm (4.7 in)
Bore 94 mm (3.7 in)
Gross Power - SAE J1995 55.4 kW (74.3 hp)
Displacement 3.33 l (203 inu00b3)
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)
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** 9105 kg (20077 lb)
Minimum Operating Weight with Cab* 8440 kg (18610 lb)
Weight Increase from Minimum Configuration
Steel Tracks with Pads 341 kg (752 lb)
Counterweight 250 kg (552 lb)
Long Stick 66 kg (146 lb)
Travel System
Maximum Traction Force - High Speed 27.8 kN (6250 lb)
Ground Pressure - Maximum Weight 39.8 kPa (5.8 psi)
Ground Pressure - Minimum Weight 36.9 kPa (5.4 psi)
Travel Speed - High 5.1 km/h (3.2 mile/h)
Travel Speed - Low 3.1 km/h (1.9 mile/h)
Maximum Traction Force - Low Speed 67.5 kN (15175 lb)
Gradeability - Maximum 30 degrees
Service Refill Capacities
Fuel Tank 147 l (39 gal (US))
Hydraulic System 110 l (29 gal (US))
Hydraulic Tank 53 l (14 gal (US))
Cooling System 10 l (2.6 gal (US))
Engine Oil 11.2 l (3 gal (US))
Hydraulic System
Digging Force - Bucket 62 kN (13946 lb)
Operating Pressure - Travel 285 bar (4134 psi)
Operating Pressure - Swing 250 bar (3626 psi)
Operating Pressure - Equipment 285 bar (4134 psi)
Digging Force - Stick - Long 35.7 kN (8032 lb)
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Pump Flow at 2,400 rpm 167 l/min (44 gal/min)
Digging Force - Stick - Standard 42.3 kN (9509 lb)
Maximum Auxiliary Circuit - Primary - Pressure at Pump 285 bar (4134 psi)
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 285 bar (4134 psi)
Maximum Auxiliary Circuit - Primary - Flow at Pump 131 l/min (35 gal/min)
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)
Boom Swing - Right 50 degrees
Blade
Height 431 mm (17 in)
Width - Standard 2300 mm (90.6 in)
Width - Wide 2450 mm (96.5 in)
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
Sound
Operator Sound Pressure (ISO 6396:2008) 72 dB(A) (72 dB(A))
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)
Vertical Wall 2991 mm (117.8 in)
Boom In Reach 3059 mm (120.4 in)
Tail Swing with Counterweight 1585 mm (62.4 in)
Boom Swing - Right 935 mm (36.8 in)
Track Belt/Shoe Width 450 mm (17.7 in)
Maximum Reach 7141 mm (281.1 in)
Stick Length 1820 mm (71.7 in)
Maximum Blade Height 370 mm (14.6 in)
Boom Swing - Left 604 mm (23.8 in)
Maximum Blade Depth 407 mm (16 in)
O/A Track Width 2300 mm (90.6 in)
Maximum Dig Height 6736 mm (265.2 in)
Maximum Dump Clearance 4760 mm (187.4 in)
Maximum Reach - Ground Level 6949 mm (273.6 in)
Tail Swing without Counterweight 1450 mm (57.1 in)
O/A Undercarriage Length 2880 mm (113.4 in)
Swing Bearing - Height 756 mm (29.7 in)
Ground Clearance 350 mm (13.8 in)
Dig Depth 4108 mm (161.7 in)
Note *Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - with Counterweight 6706 mm (264 in)
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 6574 mm (258.8 in)
Note (2) ***With blade positioned at the rear of the machine.
Height - Boom Working - With Tools** 2660 mm (104.7 in)
Height - Boom Transport - No Tools* 2430 mm (95.7 in)
Dimensions - Long Stick
Dig Depth 4643 mm (182.8 in)
Boom Swing - Left 604 mm (23.8 in)
Maximum Dig Height 7039 mm (277.1 in)
Maximum Blade Height 370 mm (14.6 in)
Track Belt/Shoe Width 450 mm (17.7 in)
Cab Height 2541 mm (100 in)
Tail Swing with Counterweight 1585 mm (62.4 in)
O/A Undercarriage Length 2880 mm (113.4 in)
Maximum Dump Clearance 5072 mm (199.7 in)
Boom Swing - Right 935 mm (36.8 in)
Maximum Blade Depth 407 mm (16 in)
Ground Clearance 350 mm (13.8 in)
Stick Length 2358 mm (92.8 in)
Maximum Reach 7637 mm (300.7 in)
Maximum Reach - Ground Level 7460 mm (293.7 in)
Boom In Reach 3215 mm (126.6 in)
Swing Bearing - Height 756 mm (29.7 in)
O/A Track Width 2300 mm (90.6 in)
Tail Swing without Counterweight 1450 mm (57.1 in)
Vertical Wall 3404 mm (134 in)
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* 2260 mm (89 in)
Height - Boom Working - With Tools** 3050 mm (120.1 in)
Overall Shipping Length - without Counterweight 6872 mm (270.6 in)***
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%

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

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)

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