303 CR Mini Hydraulic Excavator

The Cat® 303 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.


Net Power 23.6HP
Engine Model C1.1 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 23.6HP
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Note Advertised power is tested per the specified standard in effect at the time of manufacture.
Gross Power - 2,400 rpm - SAE J1995:2014 24.7HP
Stroke 3.2in
Displacement 69in³
Bore 3in


Operating Weight 7817lb
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** 7552lb
EU: CE Plate Weight with Cab*** 7012lb
Maximum Operating Weight with Cab** 7817lb
Note (2) **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight.
Note (1) *Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight.
EU: CE Plate Weight with Canopy*** 6791lb
Minimum Operating Weight with Canopy* 6670lb
Minimum Operating Weight with Cab* 6924lb

Dimensions - Long Stick

Dig Depth 116.1in
Stick Length 61.4in
Overall Shipping Length* 179.5in
Maximum Dig Height 183.1in
Swing Bearing - Height 22.4in
Note *Overall Shipping Length depends on blade position during shipment.
Tail Swing without Counterweight 30.5in
Maximum Blade Height 15.2in
Boom Swing - Left 25.2in
Vertical Wall 81.5in
Boom Height - Shipping Position 75.6in
Tail Swing with Counterweight 35in
Track Belt/Shoe Width 11.8in
Maximum Reach 206.3in
Boom In Reach 74.2in
Boom Swing - Right 34.3in
Tail Swing 33.3in
Maximum Dump Clearance 130.3in
Ground Clearance 12.2in
O/A Undercarriage Length 81.5in
O/A Shipping Height 97.6in
Track Width - Expanded 61in
Maximum Blade Depth 21.1in
Maximum Reach - Ground Level 201.2in


Height 13.8in
Width 61in

Weight Increase from Minimum Configuration

Steel Tracks 276lb
Long Stick 55lb
Extra Counterweight 551lb
Counterweight 221lb
Cab 254lb

Swing System

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

Certification - Cab and Canopy

Top Guard ISO 10262:1998 (Level I)
Tip Over Protective Structure (TOPS) ISO 12117:1997
Roll Over Protective Structure (ROPS) ISO 12117-2:2008

Hydraulic System

Operating Pressure - Equipment 3553psi
Auxiliary Circuit - Primary - Pressure 3553psi
Auxiliary Circuit - Secondary - Flow 7gal/min
Digging Force - Stick - Long 3327lbf
Auxiliary Circuit - Primary - Flow 17gal/min
Auxiliary Circuit - Secondary - Pressure 3553psi
Operating Pressure - Swing 2553psi
Pump Flow at 2,400 rpm 26gal/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard 3732lbf
Operating Pressure - Travel 3553psi
Digging Force - Bucket 6385lbf
Note * Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Dimensions - Standard Stick

Maximum Reach - Ground Level 190.2in
Maximum Reach 196.1in
Ground Clearance 12.2in
Track Belt/Shoe Width 11.8in
Boom In Reach 68.9in
Stick Length 49.6in
Note *Overall Shipping Length depends on blade position during shipment.
Maximum Blade Depth 21.1in
Tail Swing without Counterweight 30.5in
Maximum Dig Height 177.6in
O/A Undercarriage Length 81.5in
Boom Height - Shipping Position 63in
Vertical Wall 71.7in
Overall Shipping Length* 177.6in
Boom Swing - Left 25.2in
O/A Shipping Height 97.6in
Track Shoe Width 61in
Boom Swing - Right 34.3in
Tail Swing with Extra Counterweight 35in
Swing Bearing - Height 22.4in
Tail Swing 33.3in
Maximum Blade Height 15.2in
Dig Depth 104.3in
Maximum Dump Clearance 124.8in


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

Service Refill Capacities

Hydraulic System 9.2gal (US)
Fuel Tank 11.9gal (US)
Cooling System 1.1gal (US)
Hydraulic Tank 4.8gal (US)
Engine Oil 1.1gal (US)


Recyclability 95%

Travel System

Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 4.7psi
Ground Pressure - Minimum Weight 4psi
Travel Speed - High 2.8mile/h
Maximum Traction Force - Low Speed 7059lbf
Travel Speed - Low 1.6mile/h
Maximum Traction Force - High Speed 3305lbf

Standard Equipment

  • Engine
    • Cat C1.1 Turbo 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
  • Guarding
    • Top Guard ISO 10262:1998 Level I
  • Operator Environment
    • Tilt-up Canopy or Tilt-Up Cab
    • ROPS – ISO 12117-2:2008
    • TOPS – ISO 12117:1997
    • Next Generation Advanced Monitor
      – Touch Screen
      – Site Reference System
      – High Definition Camera Capable (IP68 and IP69K)
      – Numeric Security Code
    • 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)
  • Undercarriage
    • Rubber Belt (300 mm/11.8 in wide)
    • Dozer Blade
    • Dozer Blade Float
    • Tie Downs on Track Frame
  • Boom, Stick And Linkages
    • One Piece Boom (2200 mm/86.6 in)
    • Standard Stick (1260 mm/49.6 in)
    • Front Shovel Capable – Hydraulic Coupler
    • 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)
    • Seat Belt Reminder System
  • 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)
  • Electrical
    • Battery Disconnect
    • Product Link PL243 (regulations apply)
    • Product Link PLE643 (regulations apply)
    • Travel Alarm (standard in some regions)
  • Guarding
    • Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
    • Polycarbonate Half Height Front Guard (Canopy only)
  • Other
    • Bio Oil Capable
    • Eco Drain
    • Water Jacket Heater