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The Cat® 301.8 Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

Net Power 15.7 kW
Operating Weight 2029 kg
Dig Depth 2570 mm

Technicial Specifications

Net Power 15.7 kW
Engine Model C1.1
Stroke 81 mm
Bore 77 mm
Note (2) Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load.
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Displacement 1.1 l
Note (1) Engine power is tested per ISO 14396:2002.
Note Net power is tested per ISO 9249:2007 and 80/1269/EEC.
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 15.7 kW
Gross Power - SAE J1995:2014 16.1 kW
Operating Weight 2029 kg
Maximum Operating Weight with Cab** 2029 kg
Minimum Operating Weight with Canopy* 1725 kg
Maximum Operating Weight with Canopy** 1905 kg
Minimum Operating Weight with Cab* 1848 kg
Note (2) **Maximum Weight is based on steel tracks, operator, expandable undercarriage and full fuel tank.
Note (1) *Minimum Weight is based on rubber tracks, operator, fixed undercarriage and full fuel tank.
Note (3) ***CE Plate Weight is based on the most common EU configuration. Includes 75 kg (165 lb) operator and full fuel tank and excludes bucket.
EU: CE Plate Weight with Cab*** 2000 kg
EU: CE Plate Weight with Canopy*** 1880 kg
Dimensions - Long Stick
Dig Depth 2570 mm
Stick Length 1160 mm
Vertical Wall 1940 mm
Maximum Reach - Ground Level 3960 mm
Track Width - Expanded 1300 mm
O/A Undercarriage Length 1590 mm
O/A Shipping Height 2300 mm
Maximum Blade Height 270 mm
Overall Shipping Length* 3710 mm
Tail Swing 995 mm
Track Width - Retracted 990 mm
Maximum Blade Depth 265 mm
Boom In Reach 1420 mm
Maximum Dump Clearance 2640 mm
Boom Swing - Right 50 °
Maximum Reach 4030 mm
Boom Swing - Left 65 °
Maximum Dig Height 3620 mm
Swing Bearing - Height 442 mm
Boom Height - Shipping Position 1020 mm
Minimum Ground Clearance Below Undercarriage 150 mm
Note *Overall Shipping Length depends on blade position during shipment.
Track Belt/Shoe Width 230 mm
Height 225 mm
Width* 990 mm
Note *Expanded – 1300 mm (51 in)
Travel System
Travel Speed - Low 2.9 km/h
Maximum Traction Force - High Speed 11.9 kN
Travel Speed - High 4.4 km/h
Ground Pressure - Maximum Weight 29.6 kPa
Maximum Traction Force - Low Speed 18.4 kN
Ground Pressure - Minimum Weight 26.8 kPa
Gradeability - Maximum 30 degrees
Dimensions - Standard Stick
Boom In Reach 1420 mm
Maximum Reach - Ground Level 3800 mm
Maximum Blade Depth 265 mm
Stick Length 960 mm
Vertical Wall 1850 mm
Boom Height - Shipping Position 1070 mm
Track Width - Expanded 1300 mm
Overall Shipping Length* 3720 mm
Maximum Blade Height 270 mm
Boom Swing - Right 50 °
Note *Overall Shipping Length depends on blade position during shipment.
Minimum Ground Clearance Below Undercarriage 150 mm
Maximum Reach 3870 mm
Swing Bearing - Height 442 mm
Maximum Dig Height 3550 mm
Track Belt/Shoe Width 230 mm
Tail Swing 995 mm
Boom Swing - Left 65 °
Track Width - Retracted 990 mm
O/A Undercarriage Length 1590 mm
Maximum Dump Clearance 2560 mm
O/A Shipping Height 2300 mm
Dig Depth 2370 mm
Hydraulic System
Operating Pressure - Equipment 245 bar
Auxiliary Circuit - Secondary - Flow 14 l/min
Digging Force - Bucket 19.6 kN
Operating Pressure - Travel 245 bar
Digging Force - Stick - Long 9.8 kN
Auxiliary Circuit - Secondary - Pressure 245 bar
Operating Pressure - Swing 147 bar
Auxiliary Circuit - Primary - Flow 33 l/min
Pump Flow at 2,400 rpm 66 l/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard 11.3 kN
Auxiliary Circuit - Primary - Pressure 245 bar
Certification - Cab and Canopy
Tip Over Protective Structure (TOPS) ISO 12117:1997
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Top Guard ISO 10262:1998 (Level I)
Service Refill Capacities
Cooling System 3.9 l
Hydraulic Tank 18 l
Engine Oil 4.4 l
Fuel Tank 26 l
Hydraulic System 26 l
Operator Sound Pressure (ISO 6396:2008) 73 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008) 93 dB(A)
Note European Union Directive “2000/14/EC”
Weight Increase from Minimum Configuration
Steel Tracks 50 kg
Long Stick 8 kg
Expandable Undercarriage 123 kg
Swing System
Machine Swing Speed 9.8 r/min
Recyclability 95%

Advantages and Features


  • Choose either a canopy or a sealed and pressurized cab equipped with air conditioning, adjustable wrist rests, and a suspension seat option to help keep you working comfortably all day long.


  • Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information.


  • 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!


  • Strong lift and dig performance helps you get the job done faster. The retractable undercarriage lets you access and work in the tightest areas. Dig-to-blade and dozer float features allow for easy clean up.


  • Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt with optional seat belt reminder system are just a couple of the safety features we’ve built into the machine.


  • Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors. The unique tilt up cab lets you reach additional service areas when needed.


  • 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.


  • The Cat® C1.1 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)
*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

    • Cat C1.1 Engine (U.S. EPA Tier 4 Final/EU Stage V)
    • Automatic Engine Idle
    • Automatic Engine Shutdown
    • Automatic Two Speed Travel
    • Fuel Water Separator
    • Power on Demand (not available in all regions)
    • Variable Displacement Piston Pump
    • Load Sensing/Flow Sharing Hydraulics
    • Smart Tech Electronic Pump
    • Accumulator
    • Automatic Swing Brake
    • Auxiliary Hydraulic Lines
    • One and Two Way Auxiliary Flow
    • Continuous Auxiliary Flow
    • Auxiliary Line Quick Disconnects
    • Tilt-up Canopy or Tilt-Up Cab
    • Top Guard ISO 10262:1998 Level I
    • ROPS – ISO 12117-2:2008
    • TOPS – ISO 12117:1997
    • Machine 2-Point Lifting
    • Stick Steer Mode
    • Travel Cruise Control
    • Control Pattern Changer (optional in some regions)
    • Adjustable Wrist Rests
    • Washable Floor Mat
    • Travel Pedals and Hand Levers
    • Machine Security
    • Standard Key with Pass Code
    • Vinyl Non-Suspension Seat
    • Fabric Suspension Seat (Cab only)
    • Hydraulic Lockout – All Controls
    • Retractable High Visibility Seat Belt (75 mm/3 in)
    • Coat Hook
    • Cup Holder
    • Storage Pocket
    • Skylight
    • Mounting Bosses for Front
    • Signaling/Warning Horn
    • Interior Light (Cab only)
    • Boom Light, Halogen
    • Utility Space for Mobile Phone
    • Next Generation Color LCD Monitor (IP66)
      – Fuel Level and Coolant Temperature Gauges
      – Maintenance and Machine Monitoring
      – Performance and Machine Adjustments
      – Numeric Security Code
      – Multiple Languages
      – Hour Meter with Wake Up Switch
    • Seat Belt Reminder System
    • Expandable Undercarriage
    • Rubber Belt (250 mm/10 in wide)
    • Dozer Blade
    • Dozer Blade Float
    • Hydraulic Track Adjusters
    • Tie Downs on Track Frame
    • One Piece Boom (1850 mm/73 in)
    • Standard Stick (960 mm/37.8 in)
    • Front Shovel Capable
    • Front Shovel Capable – Pin-On
    • Thumb Ready (not available in all regions)
    • Certified Lifting Eye (optional in some regions)
    • 12 Volt Battery
    • Software (machine and monitor)
    • Maintenance Free Battery
    • Signaling/Warning Horn
    • 12 Volt Power Socket

Optional Equipment

    • Cab with Air Conditioning
    • Cab with Heater
    • Control Pattern Changer (optional in some regions)
    • No Travel Pedals and Hand Levers
    • Push to Start with Key Fob/Pass Code
    • Vinyl Suspension Seat (Canopy only)
    • LED Front Lights
    • LED Front and Rear Lights
    • LED Boom Light
    • Mirrors Left and Right
    • Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
    • Steel Track (250 mm/10 in wide)
    • Long Stick (1160 mm/45.7 in)
    • Front Shovel Capable – Dual Lock Manual Coupler
    • Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Hydraulic Quick Coupler Lines (not available in all regions)
    • Battery Disconnect
    • Product Link PL243 (regulations apply)
    • Product Link PLE643 (regulations apply)
    • Travel Alarm (standard in some regions)
    • Polycarbonate Half Height Front Guard (Canopy only)
    • Polycarbonate Front Guard (ISO 10262:1998 Level 1 and EN356 PSA)
    • Bio Oil Capable
    • Eco Drain
    • Water Jacket Heater