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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Engine
- 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 9,249 and 80/1,269/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
Weights
- Operating Weight
- 9,239 lb
- Minimum Operating Weight with Canopy*
- 7,673 lb
- EU: CE Plate Weight with Cab***
- 8,004 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**
- 9,239 lb
- Maximum Operating Weight with Canopy**
- 8,930 lb
- EU: CE Plate Weight with Canopy***
- 7,784 lb
- Minimum Operating Weight with Cab*
- 7,982 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.
Dimensions - Long Stick
- 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
Blade
- Height
- 13.8 in
- Width
- 70.1 in
Dimensions - Standard Stick
- 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
Weight Increase from Minimum Configuration
- Cab
- 309 lb
- Counterweight
- 221 lb
- Steel Tracks
- 287 lb
- Long Stick
- 44 lb
- Angle Blade
- 353 lb
- Extra Counterweight
- 551 lb
Service Refill Capacities
- 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)
Travel System
- Ground Pressure - Minimum Weight
- 4.3 psi
- Maximum Traction Force - High Speed
- 3,799 lbf
- Maximum Traction Force - Low Speed
- 6,969 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
Hydraulic System
- Pump Flow at 2,400 rpm
- 26 gal/min
- Auxiliary Circuit - Primary - Flow
- 18 gal/min
- Operating Pressure - Swing
- 2,625 psi
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
- Auxiliary Circuit - Secondary - Pressure
- 3,553 psi
- Digging Force - Stick - Long
- 3,799 lbf
- Auxiliary Circuit - Secondary - Flow
- 7 gal/min
- Digging Force - Bucket
- 7,419 lbf
- Operating Pressure - Travel
- 3,553 psi
- Operating Pressure - Equipment
- 3,553 psi
- Auxiliary Circuit - Primary - Pressure
- 3,553 psi
- Digging Force - Stick - Standard
- 4,249 lbf
- Note
- *Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Sound
- Note
- European Union Directive ‚ "2,000/14/EC"
- Operator Sound Pressure (ISO 6396:2008)
- 78 dB(A)
- Average Exterior Sound Pressure (ISO 6395:2008)
- 94 dB(A)
Swing System
- Machine Swing Speed
- 9 r/min
- Boom Swing - Right
- 50 °
- Boom Swing - Left
- 75 °
Dimensions (Approximate) - Standard Stick
- Tail Swing with Extra Counterweight
- 39.6 in
Certification - Cab and Canopy
- Roll Over Protective Structure (ROPS)
- ISO 12,117-2:2,008
- Tip Over Protective Structure (TOPS)
- ISO 12,117:1,997
- Top Guard
- ISO 10,262:1,998 (Level I)
Dimensions (Approximate) - Long Stick
- Tail Swing with Extra Counterweight
- 39.6 in
Sustainability
- Recyclability
- 95%
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
Specifications
Engine
- 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 9,249 and 80/1,269/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
Weights
- Operating Weight
- 9,239 lb
- Minimum Operating Weight with Canopy*
- 7,673 lb
- EU: CE Plate Weight with Cab***
- 8,004 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**
- 9,239 lb
- Maximum Operating Weight with Canopy**
- 8,930 lb
- EU: CE Plate Weight with Canopy***
- 7,784 lb
- Minimum Operating Weight with Cab*
- 7,982 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.
Dimensions - Long Stick
- 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
Blade
- Height
- 13.8 in
- Width
- 70.1 in
Dimensions - Standard Stick
- 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
Weight Increase from Minimum Configuration
- Cab
- 309 lb
- Counterweight
- 221 lb
- Steel Tracks
- 287 lb
- Long Stick
- 44 lb
- Angle Blade
- 353 lb
- Extra Counterweight
- 551 lb
Service Refill Capacities
- 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)
Travel System
- Ground Pressure - Minimum Weight
- 4.3 psi
- Maximum Traction Force - High Speed
- 3,799 lbf
- Maximum Traction Force - Low Speed
- 6,969 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
Hydraulic System
- Pump Flow at 2,400 rpm
- 26 gal/min
- Auxiliary Circuit - Primary - Flow
- 18 gal/min
- Operating Pressure - Swing
- 2,625 psi
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
- Auxiliary Circuit - Secondary - Pressure
- 3,553 psi
- Digging Force - Stick - Long
- 3,799 lbf
- Auxiliary Circuit - Secondary - Flow
- 7 gal/min
- Digging Force - Bucket
- 7,419 lbf
- Operating Pressure - Travel
- 3,553 psi
- Operating Pressure - Equipment
- 3,553 psi
- Auxiliary Circuit - Primary - Pressure
- 3,553 psi
- Digging Force - Stick - Standard
- 4,249 lbf
- Note
- *Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Sound
- Note
- European Union Directive ‚ "2,000/14/EC"
- Operator Sound Pressure (ISO 6396:2008)
- 78 dB(A)
- Average Exterior Sound Pressure (ISO 6395:2008)
- 94 dB(A)
Swing System
- Machine Swing Speed
- 9 r/min
- Boom Swing - Right
- 50 °
- Boom Swing - Left
- 75 °
Dimensions (Approximate) - Standard Stick
- Tail Swing with Extra Counterweight
- 39.6 in
Certification - Cab and Canopy
- Roll Over Protective Structure (ROPS)
- ISO 12,117-2:2,008
- Tip Over Protective Structure (TOPS)
- ISO 12,117:1,997
- Top Guard
- ISO 10,262:1,998 (Level I)
Dimensions (Approximate) - Long Stick
- Tail Swing with Extra Counterweight
- 39.6 in
Sustainability
- Recyclability
- 95%
Standard/Optional Features
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