303.5 Mini Hydraulic Excavator

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The Cat® 303.5 Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

ID Number M23226
Model 303.5
Model Year 2022
Serial Number 0RE901550
Location STOCKTON 1521
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Engine

Net Power 23.6HP
Engine Model C1.7
Bore 3.3in
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 23.6HP
Displacement 104in³
Note Net power is tested per ISO 9249 and 80/1269/EEC.
Gross Power - 2,400 rpm - SAE J1995 24.7HP
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
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.
Stroke 3.9in

Weights

Operating Weight 9239lb
Minimum Operating Weight with Canopy* 7673lb
EU: CE Plate Weight with Cab*** 8004lb
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 Cab** 9239lb
Maximum Operating Weight with Canopy** 8930lb
EU: CE Plate Weight with Canopy*** 7784lb
Minimum Operating Weight with Cab* 7982lb
Note (1) * Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight.
Note (2) **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight.

Dimensions - Long Stick

Dig Depth 122.4in
Track Belt/Shoe Width 11.8in
Maximum Reach 216.9in
O/A Track Width 70.1in
Maximum Blade Depth 21.1in
Tail Swing without Counterweight 35in
Stick Length 61.4in
Swing Bearing - Height 22.2in
Boom Swing - Left 640mm
Overall Shipping Length* 190.9in
Maximum Reach - Ground Level 211.8in
Maximum Dump Clearance 141.7in
Tail Swing with Counterweight 37.8in
O/A Shipping Height 97.6in
Note *Overall Shipping Length depends on blade position during shipment.
Boom In Reach 73.2in
Maximum Dig Height 197.6in
Vertical Wall 94.1in
Boom Height - Shipping Position 68.9in
Maximum Blade Height 15.2in
O/A Undercarriage Length 87.4in
Boom Swing - Right 34.3°
Ground Clearance 12.2in

Blade

Height 13.8in
Width 70.1in

Dimensions - Standard Stick

Boom Swing - Right 34.3°
Tail Swing with Counterweight 37.8in
Stick Length 49.6in
Maximum Reach - Ground Level 202in
Boom Swing - Left 25.2°
Maximum Reach 207.5in
Track Belt/Shoe Width 11.8in
Maximum Dump Clearance 137.4in
Swing Bearing - Height 22.2in
Boom Height - Shipping Position 59.8in
O/A Shipping Height 97.6in
Overall Shipping Length* 189in
Boom In Reach 69.3in
Note *Overall Shipping Length depends on blade position during shipment.
Tail Swing with Extra Counterweight 39.6in
Maximum Dig Height 193.7in
Vertical Wall 88.6in
Dig Depth 110.6in
O/A Undercarriage Length 87.4in
Tail Swing without Counterweight 35in
Maximum Blade Depth 21.1in
Maximum Blade Height 15.2in
Ground Clearance 12.2in

Weight Increase from Minimum Configuration

Cab 309lb
Counterweight 221lb
Steel Tracks 287lb
Long Stick 44lb
Extra Counterweight 551lb
Angle Blade 353lb

Service Refill Capacities

Fuel Tank 11.9gal (US)
Hydraulic Tank 5.3gal (US)
Cooling System 1.8gal (US)
Engine Oil 1.6gal (US)
Hydraulic System 11.9gal (US)

Travel System

Ground Pressure - Minimum Weight 4.3psi
Maximum Traction Force - High Speed 3799lbf
Maximum Traction Force - Low Speed 6969lbf
Travel Speed - High 2.8mile/h
Gradeability - Maximum 30 degrees
Travel Speed - Low 1.6mile/h
Ground Pressure - Maximum Weight 5.2psi

Hydraulic System

Pump Flow at 2,400 rpm 26gal/min
Auxiliary Circuit - Primary - Flow 18gal/min
Operating Pressure - Swing 2625psi
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Secondary - Pressure 3553psi
Digging Force - Stick - Long 3799lbf
Auxiliary Circuit - Secondary - Flow 7gal/min
Digging Force - Bucket 7419lbf
Operating Pressure - Travel 3553psi
Operating Pressure - Equipment 3553psi
Auxiliary Circuit - Primary - Pressure 3553psi
Digging Force - Stick - Standard 4249lbf
Note *Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Sound

Note European Union Directive ‚ "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008) 78dB(A)
Average Exterior Sound Pressure (ISO 6395:2008) 94dB(A)

Swing System

Machine Swing Speed 9r/min
Boom Swing - Right 50°
Boom Swing - Left 75°

Dimensions (Approximate) - Standard Stick

Tail Swing with Extra Counterweight 39.6in

Certification - Cab and 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)

Dimensions (Approximate) - Long Stick

Tail Swing with Extra Counterweight 39.6in

Standard Equipment

Engine
  • Cat C1.7 NA 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 or Tilt-Up Cab
  • Top Guard ISO 10262:1998 Level I
  • ROPS – ISO 12117-2:2008
  • TOPS – ISO 12117:1997
  • 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
  • Fabric Suspension Seat (Cab only)
  • Vinyl Suspension Seat (Canopy 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
    – Jog Dial (cab only)

    Next Generation Advanced Monitor (Optional)
    – 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
  • Rubber Belt (300 mm/11.8 in wide)
  • Dozer Blade
  • Dozer Blade Float
  • Angle Blade
  • Tie Downs on Track Frame
Boom, Stick And Linkages
  • One Piece Boom (2400 mm/94.5 in)
  • Standard Stick (1260 mm/49.6 in)
  • 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
  • Cab with Air Conditioning
  • Cab with Heater
  • Control Pattern Changer (optional in some regions)
  • No Travel Pedals and Hand Levers
  • Machine Security – Push to Start with Key Fob/Pass Code
  • Vinyl Non-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)
Undercarriage
  • Steel Track (300 mm/11.8 in wide)
Boom, Stick And Linkages
  • Long Stick (1560 mm/61.4 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)
  • Front Shovel Capable – Hydraulic Coupler
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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