Exterior View
Interior View

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.

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
Gross Power – 2,400 rpm – SAE J1995
24.7HP
Note
Net power is tested per ISO 9249 and 80/1269/EEC.
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
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.
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
Height
13.8in
Width
70.1in
Boom Swing – Right
34.3°
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
Tail Swing with Counterweight
37.8in
O/A Shipping Height
97.6in
Overall Shipping Length*
189in
Tail Swing with Extra Counterweight
39.6in
Boom In Reach
69.3in
Note
*Overall Shipping Length depends on blade position during shipment.
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
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)
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
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.
Note
European Union Directive ‚ “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008)
78dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
94dB(A)
Steel Tracks
287lb
Cab
309lb
Counterweight
221lb
Long Stick
44lb
Extra Counterweight
551lb
Angle Blade
353lb
Machine Swing Speed
9r/min
Boom Swing – Left
75°
Boom Swing – Right
50°
Tail Swing with Extra Counterweight
39.6in
Tail Swing with Extra Counterweight
39.6in
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Top Guard
ISO 10262:1998 (Level I)
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

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