The Cat® 303 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
- C1.1 Turbo
- Bore
- 3 in
- Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
- 23.6 hp
- 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
- 24.7 hp
- Stroke
- 3.2 in
- Displacement
- 69 in³
Weights
- Operating Weight
- 7,817 lb
- 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***
- 6,791 lb
- Minimum Operating Weight with Canopy*
- 6,670 lb
- Minimum Operating Weight with Cab*
- 6,924 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 Canopy**
- 7,552 lb
- EU: CE Plate Weight with Cab***
- 7,012 lb
- Maximum Operating Weight with Cab**
- 7,817 lb
- 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
- 116.1 in
- Boom Height - Shipping Position
- 75.6 in
- Tail Swing with Counterweight
- 35 in
- Track Belt/Shoe Width
- 11.8 in
- Maximum Reach
- 206.3 in
- Boom In Reach
- 74.2 in
- Boom Swing - Right
- 34.3 in
- Tail Swing
- 33.3 in
- Maximum Dump Clearance
- 130.3 in
- Ground Clearance
- 12.2 in
- O/A Undercarriage Length
- 81.5 in
- O/A Shipping Height
- 97.6 in
- Track Width - Expanded
- 61 in
- Maximum Blade Depth
- 21.1 in
- Maximum Reach - Ground Level
- 201.2 in
- Stick Length
- 61.4 in
- Overall Shipping Length*
- 179.5 in
- Maximum Dig Height
- 183.1 in
- Swing Bearing - Height
- 22.4 in
- Note
- *Overall Shipping Length depends on blade position during shipment.
- Tail Swing without Counterweight
- 30.5 in
- Maximum Blade Height
- 15.2 in
- Boom Swing - Left
- 25.2 in
- Vertical Wall
- 81.5 in
Blade
- Height
- 13.8 in
- Width
- 61 in
Dimensions - Standard Stick
- Maximum Blade Depth
- 21.1 in
- Tail Swing without Counterweight
- 30.5 in
- Maximum Dig Height
- 177.6 in
- O/A Undercarriage Length
- 81.5 in
- Boom Height - Shipping Position
- 63 in
- Vertical Wall
- 71.7 in
- Overall Shipping Length*
- 177.6 in
- Boom Swing - Left
- 25.2 in
- O/A Shipping Height
- 97.6 in
- Track Shoe Width
- 61 in
- Boom Swing - Right
- 34.3 in
- Tail Swing with Extra Counterweight
- 35 in
- Swing Bearing - Height
- 22.4 in
- Tail Swing
- 33.3 in
- Maximum Blade Height
- 15.2 in
- Dig Depth
- 104.3 in
- Maximum Dump Clearance
- 124.8 in
- Maximum Reach - Ground Level
- 190.2 in
- Maximum Reach
- 196.1 in
- Ground Clearance
- 12.2 in
- Track Belt/Shoe Width
- 11.8 in
- Boom In Reach
- 68.9 in
- Stick Length
- 49.6 in
- Note
- *Overall Shipping Length depends on blade position during shipment.
Swing System
- Boom Swing - Right
- 50 °
- Machine Swing Speed
- 9 r/min
- Boom Swing - Left
- 75 °
Sound
- Average Exterior Sound Pressure (ISO 6395:2008)
- 94 dB(A)
- Operator Sound Pressure (ISO 6396:2008)
- 78 dB(A)
- Note
- European Union Directive “2,000/14/EC”
Hydraulic System
- Auxiliary Circuit - Primary - Flow
- 17 gal/min
- Auxiliary Circuit - Secondary - Pressure
- 3,553 psi
- Operating Pressure - Swing
- 2,553 psi
- Pump Flow at 2,400 rpm
- 26 gal/min
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
- Digging Force - Stick - Standard
- 3,732 lbf
- Operating Pressure - Travel
- 3,553 psi
- Digging Force - Bucket
- 6,385 lbf
- Operating Pressure - Equipment
- 3,553 psi
- Auxiliary Circuit - Primary - Pressure
- 3,553 psi
- Auxiliary Circuit - Secondary - Flow
- 7 gal/min
- Digging Force - Stick - Long
- 3,327 lbf
- Note
- * Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Travel System
- Gradeability - Maximum
- 30 degrees
- Ground Pressure - Maximum Weight
- 4.7 psi
- Ground Pressure - Minimum Weight
- 4 psi
- Travel Speed - High
- 2.8 mile/h
- Maximum Traction Force - Low Speed
- 7,059 lbf
- Travel Speed - Low
- 1.6 mile/h
- Maximum Traction Force - High Speed
- 3,305 lbf
Service Refill Capacities
- Cooling System
- 1.1 gal (US)
- Hydraulic Tank
- 4.8 gal (US)
- Engine Oil
- 1.1 gal (US)
- Hydraulic System
- 9.2 gal (US)
- Fuel Tank
- 11.9 gal (US)
Weight Increase from Minimum Configuration
- Counterweight
- 221 lb
- Cab
- 254 lb
- Steel Tracks
- 276 lb
- Long Stick
- 55 lb
- Extra Counterweight
- 551 lb
Certification - Cab and Canopy
- Roll Over Protective Structure (ROPS)
- ISO 12,117-2:2,008
- Top Guard
- ISO 10,262:1,998 (Level I)
- Tip Over Protective Structure (TOPS)
- ISO 12,117:1,997
Sustainability
- Recyclability
- 95%
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
Specifications
Engine
- Net Power
- 23.6 hp
- Engine Model
- C1.1 Turbo
- Bore
- 3 in
- Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
- 23.6 hp
- 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
- 24.7 hp
- Stroke
- 3.2 in
- Displacement
- 69 in³
Weights
- Operating Weight
- 7,817 lb
- 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***
- 6,791 lb
- Minimum Operating Weight with Canopy*
- 6,670 lb
- Minimum Operating Weight with Cab*
- 6,924 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 Canopy**
- 7,552 lb
- EU: CE Plate Weight with Cab***
- 7,012 lb
- Maximum Operating Weight with Cab**
- 7,817 lb
- 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
- 116.1 in
- Boom Height - Shipping Position
- 75.6 in
- Tail Swing with Counterweight
- 35 in
- Track Belt/Shoe Width
- 11.8 in
- Maximum Reach
- 206.3 in
- Boom In Reach
- 74.2 in
- Boom Swing - Right
- 34.3 in
- Tail Swing
- 33.3 in
- Maximum Dump Clearance
- 130.3 in
- Ground Clearance
- 12.2 in
- O/A Undercarriage Length
- 81.5 in
- O/A Shipping Height
- 97.6 in
- Track Width - Expanded
- 61 in
- Maximum Blade Depth
- 21.1 in
- Maximum Reach - Ground Level
- 201.2 in
- Stick Length
- 61.4 in
- Overall Shipping Length*
- 179.5 in
- Maximum Dig Height
- 183.1 in
- Swing Bearing - Height
- 22.4 in
- Note
- *Overall Shipping Length depends on blade position during shipment.
- Tail Swing without Counterweight
- 30.5 in
- Maximum Blade Height
- 15.2 in
- Boom Swing - Left
- 25.2 in
- Vertical Wall
- 81.5 in
Blade
- Height
- 13.8 in
- Width
- 61 in
Dimensions - Standard Stick
- Maximum Blade Depth
- 21.1 in
- Tail Swing without Counterweight
- 30.5 in
- Maximum Dig Height
- 177.6 in
- O/A Undercarriage Length
- 81.5 in
- Boom Height - Shipping Position
- 63 in
- Vertical Wall
- 71.7 in
- Overall Shipping Length*
- 177.6 in
- Boom Swing - Left
- 25.2 in
- O/A Shipping Height
- 97.6 in
- Track Shoe Width
- 61 in
- Boom Swing - Right
- 34.3 in
- Tail Swing with Extra Counterweight
- 35 in
- Swing Bearing - Height
- 22.4 in
- Tail Swing
- 33.3 in
- Maximum Blade Height
- 15.2 in
- Dig Depth
- 104.3 in
- Maximum Dump Clearance
- 124.8 in
- Maximum Reach - Ground Level
- 190.2 in
- Maximum Reach
- 196.1 in
- Ground Clearance
- 12.2 in
- Track Belt/Shoe Width
- 11.8 in
- Boom In Reach
- 68.9 in
- Stick Length
- 49.6 in
- Note
- *Overall Shipping Length depends on blade position during shipment.
Swing System
- Boom Swing - Right
- 50 °
- Machine Swing Speed
- 9 r/min
- Boom Swing - Left
- 75 °
Sound
- Average Exterior Sound Pressure (ISO 6395:2008)
- 94 dB(A)
- Operator Sound Pressure (ISO 6396:2008)
- 78 dB(A)
- Note
- European Union Directive “2,000/14/EC”
Hydraulic System
- Auxiliary Circuit - Primary - Flow
- 17 gal/min
- Auxiliary Circuit - Secondary - Pressure
- 3,553 psi
- Operating Pressure - Swing
- 2,553 psi
- Pump Flow at 2,400 rpm
- 26 gal/min
- Type
- Load Sensing Hydraulics with Variable Displacement Piston Pump
- Digging Force - Stick - Standard
- 3,732 lbf
- Operating Pressure - Travel
- 3,553 psi
- Digging Force - Bucket
- 6,385 lbf
- Operating Pressure - Equipment
- 3,553 psi
- Auxiliary Circuit - Primary - Pressure
- 3,553 psi
- Auxiliary Circuit - Secondary - Flow
- 7 gal/min
- Digging Force - Stick - Long
- 3,327 lbf
- Note
- * Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Travel System
- Gradeability - Maximum
- 30 degrees
- Ground Pressure - Maximum Weight
- 4.7 psi
- Ground Pressure - Minimum Weight
- 4 psi
- Travel Speed - High
- 2.8 mile/h
- Maximum Traction Force - Low Speed
- 7,059 lbf
- Travel Speed - Low
- 1.6 mile/h
- Maximum Traction Force - High Speed
- 3,305 lbf
Service Refill Capacities
- Cooling System
- 1.1 gal (US)
- Hydraulic Tank
- 4.8 gal (US)
- Engine Oil
- 1.1 gal (US)
- Hydraulic System
- 9.2 gal (US)
- Fuel Tank
- 11.9 gal (US)
Weight Increase from Minimum Configuration
- Counterweight
- 221 lb
- Cab
- 254 lb
- Steel Tracks
- 276 lb
- Long Stick
- 55 lb
- Extra Counterweight
- 551 lb
Certification - Cab and Canopy
- Roll Over Protective Structure (ROPS)
- ISO 12,117-2:2,008
- Top Guard
- ISO 10,262:1,998 (Level I)
- Tip Over Protective Structure (TOPS)
- ISO 12,117:1,997
Sustainability
- Recyclability
- 95%
Standard/Optional Features
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