301.5 Mini Hydraulic Excavator



Technical Specifications
Benefits and Features
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The Cat® 301.5 Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

Net Power 21 HP
Engine Model C1.1
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Note Net power is tested per ISO 9249:2007 and 80/1269/EEC.
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.
Note (1) Engine power is tested per ISO 14396:2002.
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 21 HP
Gross Power - SAE J1995:2014 21.6 HP
Bore 3 in
Displacement 69 in³
Stroke 3.2 in
Operating Weight 3913 lb
EU: CE Plate Weight*** 3836 lb
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.
Maximum Operating Weight with Canopy** 3913 lb
Minimum Operating Weight with Canopy* 3483 lb
Note (1) *Minimum Weight is based on rubber tracks, operator, fixed undercarriage and full fuel tank.
Note (2) **Maximum Weight is based on steel tracks, operator, expandable undercarriage and full fuel tank.
Dimensions - Long Stick
Dig Depth 100 in
Boom Height - Shipping Position 40.9 in
Boom In Reach 57.1 in
Boom Swing - Left 65 °
Boom Swing - Right 50 °
Maximum Blade Depth 10.2 in
Maximum Blade Height 10.8 in
Maximum Dig Height 137.4 in
Maximum Dump Clearance 98.8 in
Maximum Reach 155.9 in
Maximum Reach - Ground Level 153.1 in
Minimum Ground Clearance Below Undercarriage 6.1 in
Note *Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height 90.9 in
O/A Undercarriage Length 57.5 in
Overall Shipping Length* 141.3 in
Stick Length 45.7 in
Swing Bearing - Height 17.5 in
Tail Swing 32.3 in
Track Belt/Shoe Width 9.1 in
Track Width - Expanded 51.18 in
Track Width - Retracted 39 in
Vertical Wall 74.4 in
Height 8.9 in
Note *Expanded – 1300 mm (51 in)
Width* 39 in
Dimensions - Standard Stick
Note *Overall Shipping Length depends on blade position during shipment.
Boom Height - Shipping Position 42.9 in
Boom In Reach 57.5 in
Boom Swing - Left 65 °
Boom Swing - Right 50 °
Dig Depth 92.1 in
Maximum Blade Depth 10.2 in
Maximum Blade Height 10.8 in
Maximum Dig Height 135 in
Maximum Dump Clearance 96.5 in
Maximum Reach 149.6 in
Maximum Reach - Ground Level 146.9 in
Minimum Ground Clearance Below Undercarriage 6.1 in
O/A Shipping Height 90.9 in
O/A Undercarriage Length 57.5 in
Overall Shipping Length* 142.5 in
Stick Length 37.8 in
Swing Bearing - Height 17.5 in
Tail Swing 32.3 in
Track Belt/Shoe Width 9.1 in
Track Width - Expanded 51.18 in
Track Width - Retracted 39 in
Vertical Wall 70.9 in
Weight Increase from Minimum Configuration
Expandable Undercarriage 284 lb
Long Stick 18 lb
Steel Tracks 126 lb
Recyclability 95%
Certification - Canopy
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Top Guard ISO 10262:1998 (Level I)
Hydraulic System
Auxiliary Circuit - Primary - Flow 8.7 gal/min
Auxiliary Circuit - Primary - Pressure 3089.3 psi
Auxiliary Circuit - Secondary - Flow 3.7 gal/min
Auxiliary Circuit - Secondary - Pressure 3089.3 psi
Digging Force - Bucket 3169.8 lbf
Digging Force - Stick - Long 1616.4 lbf
Digging Force - Stick - Standard 1843.4 lbf
Operating Pressure - Equipment 3089.3 psi
Operating Pressure - Swing 1493.9 psi
Operating Pressure - Travel 3089.3 psi
Pump Flow at 2,400 rpm 17.4 gal/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Service Refill Capacities
Cooling System 1 gal (US)
Engine Oil 1.2 gal (US)
Fuel Tank 5.8 gal (US)
Hydraulic System 6.9 gal (US)
Hydraulic Tank 4.8 gal (US)
Average Exterior Sound Pressure (ISO 6395:2008) 93 dB(A)
Note European Union Directive “2000/14/EC”
Swing System
Machine Swing Speed 9.8 r/min
Travel System
Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 4.4 psi
Ground Pressure - Minimum Weight 4 psi
Maximum Traction Force - High Speed 2315.5 lbf
Maximum Traction Force - Low Speed 3597 lbf
Travel Speed - High 2.7 mile/h
Travel Speed - Low 1.8 mile/h


  • Adjustable wrist rests and a suspension seat option 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 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 canopy 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:

  • Engine
    • 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
  • 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
  • Operator Environment
    • Tilt-up Canopy
    • 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
    • Machine Security – Standard Key with Pass Code
    • Vinyl Non-Suspension Seat
    • 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
    • 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
  • Undercarriage
    • Expandable Undercarriage
    • Rubber Belt (230 mm/9 in wide)
    • Dozer Blade
    • Dozer Blade Float
    • Hydraulic Track Adjusters
    • Tie Downs on Track Frame
  • Boom, Stick And Linkages
    • One Piece Boom (1780 mm/70 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)
  • Electrical
    • 12 Volt Battery
    • Software (machine and monitor)
    • Maintenance Free Battery
    • Signaling/Warning Horn
    • 12 Volt Power Socket

Optional Equipment:

  • Operator Environment
    • Control Pattern Changer (optional in some regions)
    • No Travel Pedals and Hand Levers
    • Machine Security – Push to Start with Key Fob/Pass Code
    • Vinyl Suspension Seat
    • LED Front Lights
    • LED Front and Rear Lights
    • LED Boom Light
    • Mirrors Left and Right
  • Undercarriage
    • Steel Track (230 mm/9 in wide)
  • Boom, Stick And Linkages
    • 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)
  • Electrical
    • Battery Disconnect
    • Product Link PL243 (regulations apply)
    • Product Link PLE643 (regulations apply)
    • Travel Alarm (standard in some regions)
  • Guarding
    • Guard, Canopy
    • Guard, Mesh
  • Other
    • Bio Oil Capable
    • Eco Drain
    • Water Jacket Heater

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