303.5 CR Mini Hydraulic Excavator

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

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Net Power 23.6 HP
Engine Model C1.7
Bore 3.3 in
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 23.6 HP
Displacement 104 in³
Note Net power is tested per ISO 9249 and 80/1269/EEC.
Gross Power - 2,400 rpm - SAE J1995 24.7 HP
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 3.9 in
Operating Weight 9239 lb
Minimum Operating Weight with Canopy* 7673 lb
EU: CE Plate Weight with Cab*** 8004 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 Cab** 9239 lb
Maximum Operating Weight with Canopy** 8930 lb
EU: CE Plate Weight with Canopy*** 7784 lb
Minimum Operating Weight with Cab* 7982 lb
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.
Dig Depth 122.4 in
Track Belt/Shoe Width 11.8 in
Maximum Reach 216.9 in
O/A Track Width 70.1 in
Maximum Blade Depth 21.1 in
Tail Swing without Counterweight 35 in
Stick Length 61.4 in
Swing Bearing - Height 22.2 in
Boom Swing - Left 640 mm
Overall Shipping Length* 190.9 in
Maximum Reach - Ground Level 211.8 in
Maximum Dump Clearance 141.7 in
Tail Swing with Counterweight 37.8 in
O/A Shipping Height 97.6 in
Note *Overall Shipping Length depends on blade position during shipment.
Boom In Reach 73.2 in
Maximum Dig Height 197.6 in
Vertical Wall 94.1 in
Boom Height - Shipping Position 68.9 in
Maximum Blade Height 15.2 in
O/A Undercarriage Length 87.4 in
Boom Swing - Right 34.3 °
Ground Clearance 12.2 in
Height 13.8 in
Width 70.1 in
Boom Swing - Right 34.3 °
Tail Swing with Counterweight 37.8 in
Stick Length 49.6 in
Maximum Reach - Ground Level 202 in
Boom Swing - Left 25.2 °
Maximum Reach 207.5 in
Track Belt/Shoe Width 11.8 in
Maximum Dump Clearance 137.4 in
Swing Bearing - Height 22.2 in
Boom Height - Shipping Position 59.8 in
O/A Shipping Height 97.6 in
Overall Shipping Length* 189 in
Boom In Reach 69.3 in
Note *Overall Shipping Length depends on blade position during shipment.
Tail Swing with Extra Counterweight 39.6 in
Maximum Dig Height 193.7 in
Vertical Wall 88.6 in
Dig Depth 110.6 in
O/A Undercarriage Length 87.4 in
Tail Swing without Counterweight 35 in
Maximum Blade Depth 21.1 in
Maximum Blade Height 15.2 in
Ground Clearance 12.2 in
Cab 309 lb
Counterweight 221 lb
Steel Tracks 287 lb
Long Stick 44 lb
Angle Blade 353 lb
Extra Counterweight 551 lb
Fuel Tank 11.9 gal (US)
Hydraulic Tank 5.3 gal (US)
Cooling System 1.8 gal (US)
Engine Oil 1.6 gal (US)
Hydraulic System 11.9 gal (US)
Ground Pressure - Minimum Weight 4.3 psi
Maximum Traction Force - High Speed 3799 lbf
Maximum Traction Force - Low Speed 6969 lbf
Travel Speed - High 2.8 mile/h
Gradeability - Maximum 30 degrees
Travel Speed - Low 1.6 mile/h
Ground Pressure - Maximum Weight 5.2 psi
Pump Flow at 2,400 rpm 26 gal/min
Auxiliary Circuit - Primary - Flow 18 gal/min
Operating Pressure - Swing 2625 psi
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Secondary - Pressure 3553 psi
Digging Force - Stick - Long 3799 lbf
Auxiliary Circuit - Secondary - Flow 7 gal/min
Digging Force - Bucket 7419 lbf
Operating Pressure - Travel 3553 psi
Operating Pressure - Equipment 3553 psi
Auxiliary Circuit - Primary - Pressure 3553 psi
Digging Force - Stick - Standard 4249 lbf
Note *Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Note European Union Directive ‚ "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008) 78 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008) 94 dB(A)
Machine Swing Speed 9 r/min
Boom Swing - Right 50 °
Boom Swing - Left 75 °
Tail Swing with Extra Counterweight 39.6 in
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Top Guard ISO 10262:1998 (Level I)
Tail Swing with Extra Counterweight 39.6 in
Recyclability 95%
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
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