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 23.6 hp
Operating Weight 9239 lb
Dig Depth 122.4 in
Engine Model C1.7
Bore 3.3in
Displacement 104in³
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Engine Model C1.7
Net Power 23.6hp
Net Power - ISO 9249 24.7hp
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 23.6hp
Note Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (1) Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,200 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Stroke 3.9in
EU: CE Plate Weight with Cab*** 8004lb
EU: CE Plate Weight with Canopy*** 7784lb
Maximum Operating Weight with Cab** 9239lb
Maximum Operating Weight with Canopy** 8930lb
Minimum Operating Weight with Cab* 7982lb
Minimum Operating Weight with Canopy* 7673lb
Note (1) *Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, no bucket and extra counterweight.
Note (2) **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, no bucket and extra counterweight.
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.
Operating Weight 9239lb
Boom Height - Shipping Position 68.9in
Boom In Reach 73.2in
Boom Swing - Left 640mm
Boom Swing - Right 34.3°
Dig Depth 122.4in
Maximum Blade Depth 21.1in
Maximum Blade Height 15.2in
Maximum Dig Height 197.6in
Maximum Dump Clearance 141.7in
Maximum Reach 216.9in
Maximum Reach - Ground Level 211.8in
Minimum Ground Clearance Below Undercarriage 12.2in
Note *Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height 97.6in
O/A Undercarriage Length 87.4in
Overall Shipping Length* 190.9in
Stick Length 61.4in
Swing Bearing - Height 22.2in
Tail Swing - with Extra Counterweight 39.6in
Tail Swing without Counterweight 35in
Track Belt/Shoe Width 11.8in
Track Width 70.1in
Vertical Wall 94.1in
Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 5.2psi
Ground Pressure - Minimum Weight 4.3psi
Maximum Traction Force - High Speed 3799lbf
Maximum Traction Force - Low Speed 6969lbf
Travel Speed - High 2.8mile/h
Travel Speed - Low 1.6mile/h
Average Exterior Sound Pressure (ISO 6395:2008) 94dB(A)
Note European Union Directive ‚ "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008) 78dB(A)
Auxiliary Circuit - Primary - Flow 18gpm
Auxiliary Circuit - Primary - Pressure 3553psi
Auxiliary Circuit - Secondary - Flow 7gpm
Auxiliary Circuit - Secondary - Pressure 3553psi
Digging Force - Bucket 7419lbf
Digging Force - Stick - Long 3799lbf
Digging Force - Stick - Standard 4249lbf
Note *Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment 3553psi
Operating Pressure - Swing 2625psi
Operating Pressure - Travel 3553psi
Pump Flow at 2,400 rpm 26gpm
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Boom Swing - Left 75°
Boom Swing - Right 50°
Machine Swing Speed 9r/min
Boom Height - Shipping Position 59.8in
Boom In Reach 69.3in
Boom Swing - Left 25.2°
Boom Swing - Right 34.3°
Dig Depth 110.6in
Maximum Blade Depth 21.1in
Maximum Blade Height 15.2in
Maximum Dig Height 193.7in
Maximum Dump Clearance 137.4in
Maximum Reach 207.5in
Maximum Reach - Ground Level 202in
Minimum Ground Clearance Below Undercarriage 12.2in
Note *Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height 97.6in
O/A Undercarriage Length 87.4in
Overall Shipping Length* 189in
Stick Length 49.6in
Swing Bearing - Height 22.2in
Tail Swing with Extra Counterweight 39.6in
Tail Swing without Counterweight 35in
Track Belt/Shoe Width 11.8in
Vertical Wall 88.6in
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Top Guard ISO 10262:1998 (Level I)
Cooling System 1.8gal (US)
Engine Oil 1.6gal (US)
Fuel Tank 11.9gal (US)
Hydraulic System 11.9gal (US)
Hydraulic Tank 5.3gal (US)
Height 13.8in
Width 70.1in
Recyclability 95%
Angle Blade 353lb
Cab 309lb
Counterweight 221lb
Extra Counterweight 551lb
Long Stick 44lb
Steel Tracks 287lb
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1
Cat C1.7 NA Engine (U.S. EPA Tier 4 Final/EU Stage V)
Cat C1.7 NA Engine (U.S. EPA Tier 4 Final/EU Stage V)
Automatic Engine Idle
Automatic Engine Idle
Automatic Engine Shutdown
Automatic Engine Shutdown
Automatic Two Speed Travel
Automatic Two Speed Travel
Fuel Water Separator
Fuel Water Separator
Power on Demand (not available in all regions)
Power on Demand (not available in all regions)
Variable Displacement Piston Pump
Variable Displacement Piston Pump
Load Sensing/Flow Sharing Hydraulics
Load Sensing/Flow Sharing Hydraulics
Smart Tech Electronic Pump
Accumulator
Smart Tech Electronic Pump
Automatic Swing Brake
Accumulator
Auxiliary Line Quick Disconnects
Automatic Swing Brake
One and Two Way Auxiliary Flow
Auxiliary Hydraulic Lines
Continuous Auxiliary Flow
One and Two Way Auxiliary Flow
Auxiliary Hydraulic Lines
Continuous Auxiliary Flow
Auxiliary Line Quick Disconnects
Tilt-up Canopy or Tilt-Up Cab
Stick Steer Mode
Tilt-up Canopy or Tilt-Up Cab
Travel Cruise Control
Top Guard ISO 10262:1998 Level I
Control Pattern Changer (optional in some regions)
ROPS – ISO 12117-2:2008
Adjustable Wrist Rests
TOPS – ISO 12117:1997
Washable Floor Mat
Travel Pedals and Hand Levers
Stick Steer Mode
Machine Security
Travel Cruise Control
Machine Security – Standard Key with Pass Code
Control Pattern Changer (optional in some regions)
Fabric Suspension Seat (Cab only)
Adjustable Wrist Rests
Vinyl Suspension Seat (Canopy only)
Washable Floor Mat
Hydraulic Lockout – All Controls
Travel Pedals and Hand Levers
Retractable High Visibility Seat Belt (75 mm/3 in)
Machine Security
Coat Hook
Machine Security – Standard Key with Pass Code
Cup Holder
Fabric Suspension Seat (Cab only)
Storage Pocket
Vinyl Suspension Seat (Canopy only)
Skylight
Hydraulic Lockout – All Controls
Mounting Bosses for Front
Retractable High Visibility Seat Belt (75 mm/3 in)
Signaling/Warning Horn
Coat Hook
Interior Light (Cab only)
Cup Holder
Boom Light, Halogen (not available in all regions)
Storage Pocket
Utility Space for Mobile Phone
Skylight
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)
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
Rubber Belt (300 mm/11.8 in wide)
Dozer Blade
Dozer Blade Float
Tie Downs on Track Frame
Rubber Belt (300 mm/11.8 in wide)
Dozer Blade
Dozer Blade Float
Angle Blade
Tie Downs on Track Frame
One Piece Boom (2400 mm/94.5 in)
Standard Stick (1260 mm/49.6 in)
Front Shovel Capable
Front Shovel Capable – Pin-On
Thumb Ready (not available in all regions)
Certified Lifting Eye (optional in some regions)
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)
ROPS – ISO 12117-2:2008
TOPS – ISO 12117:1997
Top Guard ISO 10262:1998 (Level I)
12 Volt Battery
Software (machine and monitor)
Maintenance Free Battery
Lock Out/Tag Out Battery Disconnect
Signaling/Warning Horn
12 Volt Power Socket
12 Volt Battery
Software (machine and monitor)
Maintenance Free Battery
Signaling/Warning Horn
12 Volt Power Socket
Cab with Air Conditioning
Cab with Air Conditioning
Cab with Heater
Cab with Heater
Control Pattern Changer (optional in some regions)
Control Pattern Changer (optional in some regions)
No Travel Pedals and Hand Levers
No Travel Pedals and Hand Levers
Machine Security – Push to Start with Key Fob/Pass Code
Machine Security – Push to Start with Key Fob/Pass Code
Vinyl Non-Suspension Seat (Canopy only)
Vinyl Non-Suspension Seat (Canopy only)
Seat Belt Reminder System
LED Front Lights
LED Front Lights
LED Front and Rear Lights
LED Front and Rear Lights
LED Boom Light
LED Boom Light
Mirrors Left and Right
Mirrors Left and Right
Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
Next Generation Advanced Monitor
– Touch Screen
– Site Reference System
– High Definition Camera Capable (IP68 and IP69K)
– Numeric Security Code
Steel Track (300 mm/11.8 in wide)
Steel Track (300 mm/11.8 in wide)
Angle Blade
Long Stick (1560 mm/61.4 in)
Long Stick (1560 mm/61.4 in)
Front Shovel Capable – Dual Lock Manual Coupler
Front Shovel Capable – Dual Lock Manual Coupler
Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
Front Shovel Capable – Hydraulic Coupler
2nd Auxiliary Hydraulic Lines
2nd Auxiliary Hydraulic Lines
Boom Lowering Check Valve
Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
Stick Lowering Check Valve
Boom Lowering Check Valve (Standard in Europe)
Hydraulic Quick Coupler Lines (not available in all regions)
Stick Lowering Check Valve (Standard in Europe)
Hydraulic Quick Coupler Lines (not available in all regions)
Front Shovel Capable – Hydraulic Coupler
Battery Disconnect
Product Link PL243 (regulations apply)
Product Link PL243 (regulations apply)
Product Link PLE643 (regulations apply)
Product Link PLE643 (regulations apply)
Travel Alarm (standard in some regions)
Travel Alarm (standard in some regions)
Polycarbonate Half Height Front Guard (Canopy only)
Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
Guard, Canopy
Guard, Mesh
Bio Oil Capable
Eco Drain
Water Jacket Heater
Bio Oil Capable
Light Counterweight (100 kg/221 lb)
Eco Drain
Extra Counterweight (250 kg/551 lb)
Water Jacket Heater
