With our huge inventory of new, used and rental equipment, WesTrac has the right machine for the job.
With our huge inventory of new, used and rental equipment, WesTrac has the right machine for the job.
Keep your operation working around the clock by making WesTrac your partner in parts. With over 75,000 product lines stocked in our warehouses, ready-to-go, we won't let you down.
The Cat® 303 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.
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 | 17.6 kW | 23.6 hp |
Engine Model | C1.1 Turbo | C1.1 Turbo |
Bore | 77 mm | 3 in |
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC | 17.6 kW | 23.6 hp |
Emissions | Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. | Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. |
Stroke | 81 mm | 3.2 in |
Note | Advertised power is tested per the specified standard in effect at the time of manufacture. | Advertised power is tested per the specified standard in effect at the time of manufacture. |
Displacement | 1.1 l | 69 in³ |
Gross Power - 2,400 rpm - SAE J1995:2014 | 18.4 kW | 24.7 hp |
Weights
Operating Weight | 3545 kg | 7817 lb |
Note (1) | *Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight. | *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*** | 3080 kg | 6791 lb |
Minimum Operating Weight with Canopy* | 3025 kg | 6670 lb |
Minimum Operating Weight with Cab* | 3140 kg | 6924 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. | ***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** | 3425 kg | 7552 lb |
EU: CE Plate Weight with Cab*** | 3180 kg | 7012 lb |
Maximum Operating Weight with Cab** | 3545 kg | 7817 lb |
Note (2) | **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight. | **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight. |
Dimensions - Long Stick
Dig Depth | 2950 mm | 116.1 in |
Boom Height - Shipping Position | 1920 mm | 75.6 in |
Tail Swing with Counterweight | 890 mm | 35 in |
Track Belt/Shoe Width | 300 mm | 11.8 in |
Maximum Reach | 5240 mm | 206.3 in |
Boom In Reach | 1910 mm | 74.2 in |
Boom Swing - Right | 870 mm | 34.3 in |
Tail Swing | 845 mm | 33.3 in |
Maximum Dump Clearance | 3310 mm | 130.3 in |
Ground Clearance | 310 mm | 12.2 in |
O/A Undercarriage Length | 2070 mm | 81.5 in |
O/A Shipping Height | 2480 mm | 97.6 in |
Track Width - Expanded | 1550 mm | 61 in |
Maximum Blade Depth | 535 mm | 21.1 in |
Maximum Reach - Ground Level | 5110 mm | 201.2 in |
Stick Length | 1560 mm | 61.4 in |
Overall Shipping Length* | 4560 mm | 179.5 in |
Maximum Dig Height | 4650 mm | 183.1 in |
Swing Bearing - Height | 570 mm | 22.4 in |
Note | *Overall Shipping Length depends on blade position during shipment. | *Overall Shipping Length depends on blade position during shipment. |
Tail Swing without Counterweight | 775 mm | 30.5 in |
Maximum Blade Height | 385 mm | 15.2 in |
Boom Swing - Left | 640 mm | 25.2 in |
Vertical Wall | 2070 mm | 81.5 in |
Blade
Height | 350 mm | 13.8 in |
Width | 1550 mm | 61 in |
Dimensions - Standard Stick
Maximum Blade Depth | 535 mm | 21.1 in |
Tail Swing without Counterweight | 775 mm | 30.5 in |
Maximum Dig Height | 4510 mm | 177.6 in |
O/A Undercarriage Length | 2070 mm | 81.5 in |
Boom Height - Shipping Position | 1600 mm | 63 in |
Vertical Wall | 1820 mm | 71.7 in |
Overall Shipping Length* | 4510 mm | 177.6 in |
Boom Swing - Left | 640 mm | 25.2 in |
O/A Shipping Height | 2480 mm | 97.6 in |
Track Shoe Width | 1550 mm | 61 in |
Boom Swing - Right | 870 mm | 34.3 in |
Tail Swing with Extra Counterweight | 890 mm | 35 in |
Swing Bearing - Height | 570 mm | 22.4 in |
Tail Swing | 845 mm | 33.3 in |
Maximum Blade Height | 385 mm | 15.2 in |
Dig Depth | 2650 mm | 104.3 in |
Maximum Dump Clearance | 3170 mm | 124.8 in |
Maximum Reach - Ground Level | 4830 mm | 190.2 in |
Maximum Reach | 4980 mm | 196.1 in |
Ground Clearance | 310 mm | 12.2 in |
Track Belt/Shoe Width | 300 mm | 11.8 in |
Boom In Reach | 1750 mm | 68.9 in |
Stick Length | 1260 mm | 49.6 in |
Note | *Overall Shipping Length depends on blade position during shipment. | *Overall Shipping Length depends on blade position during shipment. |
Swing System
Boom Swing - Right | 50 ° | 50 ° |
Machine Swing Speed | 9 r/min | 9 r/min |
Boom Swing - Left | 75 ° | 75 ° |
Sound
Average Exterior Sound Pressure (ISO 6395:2008) | 94 dB(A) | 94 dB(A) |
Operator Sound Pressure (ISO 6396:2008) | 78 dB(A) | 78 dB(A) |
Note | European Union Directive “2000/14/EC” | European Union Directive “2000/14/EC” |
Hydraulic System
Auxiliary Circuit - Primary - Flow | 65 l/min | 17 gal/min |
Auxiliary Circuit - Secondary - Pressure | 245 bar | 3553 psi |
Operating Pressure - Swing | 176 bar | 2553 psi |
Pump Flow at 2,400 rpm | 100 l/min | 26 gal/min |
Type | Load Sensing Hydraulics with Variable Displacement Piston Pump | Load Sensing Hydraulics with Variable Displacement Piston Pump |
Digging Force - Stick - Standard | 16.6 kN | 3732 lbf |
Operating Pressure - Travel | 245 bar | 3553 psi |
Digging Force - Bucket | 28.4 kN | 6385 lbf |
Operating Pressure - Equipment | 245 bar | 3553 psi |
Auxiliary Circuit - Primary - Pressure | 245 bar | 3553 psi |
Auxiliary Circuit - Secondary - Flow | 25 l/min | 7 gal/min |
Digging Force - Stick - Long | 14.8 kN | 3327 lbf |
Note | * Flow and pressure are not combinable. Under load, as flow rises pressure goes down. | * Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
Travel System
Gradeability - Maximum | 30 degrees | 30 degrees |
Ground Pressure - Maximum Weight | 32.3 kPa | 4.7 psi |
Ground Pressure - Minimum Weight | 27.6 kPa | 4 psi |
Travel Speed - High | 4.5 km/h | 2.8 mile/h |
Maximum Traction Force - Low Speed | 31.4 kN | 7059 lbf |
Travel Speed - Low | 2.6 km/h | 1.6 mile/h |
Maximum Traction Force - High Speed | 14.7 kN | 3305 lbf |
Service Refill Capacities
Cooling System | 4 l | 1.1 gal (US) |
Hydraulic Tank | 18 l | 4.8 gal (US) |
Engine Oil | 4 l | 1.1 gal (US) |
Fuel Tank | 45 l | 11.9 gal (US) |
Hydraulic System | 35 l | 9.2 gal (US) |
Weight Increase from Minimum Configuration
Counterweight | 100 kg | 221 lb |
Cab | 115 kg | 254 lb |
Steel Tracks | 125 kg | 276 lb |
Long Stick | 25 kg | 55 lb |
Extra Counterweight | 250 kg | 551 lb |
Certification - Cab and Canopy
Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 | ISO 12117-2:2008 |
Top Guard | ISO 10262:1998 (Level I) | ISO 10262:1998 (Level I) |
Tip Over Protective Structure (TOPS) | ISO 12117:1997 | ISO 12117:1997 |
Sustainability
Recyclability | 95% | 95% |
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 |
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 |
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 | 17.6 kW | 23.6 hp |
Engine Model | C1.1 Turbo | C1.1 Turbo |
Bore | 77 mm | 3 in |
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC | 17.6 kW | 23.6 hp |
Emissions | Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. | Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. |
Stroke | 81 mm | 3.2 in |
Note | Advertised power is tested per the specified standard in effect at the time of manufacture. | Advertised power is tested per the specified standard in effect at the time of manufacture. |
Displacement | 1.1 l | 69 in³ |
Gross Power - 2,400 rpm - SAE J1995:2014 | 18.4 kW | 24.7 hp |
Weights
Operating Weight | 3545 kg | 7817 lb |
Note (1) | *Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight. | *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*** | 3080 kg | 6791 lb |
Minimum Operating Weight with Canopy* | 3025 kg | 6670 lb |
Minimum Operating Weight with Cab* | 3140 kg | 6924 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. | ***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** | 3425 kg | 7552 lb |
EU: CE Plate Weight with Cab*** | 3180 kg | 7012 lb |
Maximum Operating Weight with Cab** | 3545 kg | 7817 lb |
Note (2) | **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight. | **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight. |
Dimensions - Long Stick
Dig Depth | 2950 mm | 116.1 in |
Boom Height - Shipping Position | 1920 mm | 75.6 in |
Tail Swing with Counterweight | 890 mm | 35 in |
Track Belt/Shoe Width | 300 mm | 11.8 in |
Maximum Reach | 5240 mm | 206.3 in |
Boom In Reach | 1910 mm | 74.2 in |
Boom Swing - Right | 870 mm | 34.3 in |
Tail Swing | 845 mm | 33.3 in |
Maximum Dump Clearance | 3310 mm | 130.3 in |
Ground Clearance | 310 mm | 12.2 in |
O/A Undercarriage Length | 2070 mm | 81.5 in |
O/A Shipping Height | 2480 mm | 97.6 in |
Track Width - Expanded | 1550 mm | 61 in |
Maximum Blade Depth | 535 mm | 21.1 in |
Maximum Reach - Ground Level | 5110 mm | 201.2 in |
Stick Length | 1560 mm | 61.4 in |
Overall Shipping Length* | 4560 mm | 179.5 in |
Maximum Dig Height | 4650 mm | 183.1 in |
Swing Bearing - Height | 570 mm | 22.4 in |
Note | *Overall Shipping Length depends on blade position during shipment. | *Overall Shipping Length depends on blade position during shipment. |
Tail Swing without Counterweight | 775 mm | 30.5 in |
Maximum Blade Height | 385 mm | 15.2 in |
Boom Swing - Left | 640 mm | 25.2 in |
Vertical Wall | 2070 mm | 81.5 in |
Blade
Height | 350 mm | 13.8 in |
Width | 1550 mm | 61 in |
Dimensions - Standard Stick
Maximum Blade Depth | 535 mm | 21.1 in |
Tail Swing without Counterweight | 775 mm | 30.5 in |
Maximum Dig Height | 4510 mm | 177.6 in |
O/A Undercarriage Length | 2070 mm | 81.5 in |
Boom Height - Shipping Position | 1600 mm | 63 in |
Vertical Wall | 1820 mm | 71.7 in |
Overall Shipping Length* | 4510 mm | 177.6 in |
Boom Swing - Left | 640 mm | 25.2 in |
O/A Shipping Height | 2480 mm | 97.6 in |
Track Shoe Width | 1550 mm | 61 in |
Boom Swing - Right | 870 mm | 34.3 in |
Tail Swing with Extra Counterweight | 890 mm | 35 in |
Swing Bearing - Height | 570 mm | 22.4 in |
Tail Swing | 845 mm | 33.3 in |
Maximum Blade Height | 385 mm | 15.2 in |
Dig Depth | 2650 mm | 104.3 in |
Maximum Dump Clearance | 3170 mm | 124.8 in |
Maximum Reach - Ground Level | 4830 mm | 190.2 in |
Maximum Reach | 4980 mm | 196.1 in |
Ground Clearance | 310 mm | 12.2 in |
Track Belt/Shoe Width | 300 mm | 11.8 in |
Boom In Reach | 1750 mm | 68.9 in |
Stick Length | 1260 mm | 49.6 in |
Note | *Overall Shipping Length depends on blade position during shipment. | *Overall Shipping Length depends on blade position during shipment. |
Swing System
Boom Swing - Right | 50 ° | 50 ° |
Machine Swing Speed | 9 r/min | 9 r/min |
Boom Swing - Left | 75 ° | 75 ° |
Sound
Average Exterior Sound Pressure (ISO 6395:2008) | 94 dB(A) | 94 dB(A) |
Operator Sound Pressure (ISO 6396:2008) | 78 dB(A) | 78 dB(A) |
Note | European Union Directive “2000/14/EC” | European Union Directive “2000/14/EC” |
Hydraulic System
Auxiliary Circuit - Primary - Flow | 65 l/min | 17 gal/min |
Auxiliary Circuit - Secondary - Pressure | 245 bar | 3553 psi |
Operating Pressure - Swing | 176 bar | 2553 psi |
Pump Flow at 2,400 rpm | 100 l/min | 26 gal/min |
Type | Load Sensing Hydraulics with Variable Displacement Piston Pump | Load Sensing Hydraulics with Variable Displacement Piston Pump |
Digging Force - Stick - Standard | 16.6 kN | 3732 lbf |
Operating Pressure - Travel | 245 bar | 3553 psi |
Digging Force - Bucket | 28.4 kN | 6385 lbf |
Operating Pressure - Equipment | 245 bar | 3553 psi |
Auxiliary Circuit - Primary - Pressure | 245 bar | 3553 psi |
Auxiliary Circuit - Secondary - Flow | 25 l/min | 7 gal/min |
Digging Force - Stick - Long | 14.8 kN | 3327 lbf |
Note | * Flow and pressure are not combinable. Under load, as flow rises pressure goes down. | * Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
Travel System
Gradeability - Maximum | 30 degrees | 30 degrees |
Ground Pressure - Maximum Weight | 32.3 kPa | 4.7 psi |
Ground Pressure - Minimum Weight | 27.6 kPa | 4 psi |
Travel Speed - High | 4.5 km/h | 2.8 mile/h |
Maximum Traction Force - Low Speed | 31.4 kN | 7059 lbf |
Travel Speed - Low | 2.6 km/h | 1.6 mile/h |
Maximum Traction Force - High Speed | 14.7 kN | 3305 lbf |
Service Refill Capacities
Cooling System | 4 l | 1.1 gal (US) |
Hydraulic Tank | 18 l | 4.8 gal (US) |
Engine Oil | 4 l | 1.1 gal (US) |
Fuel Tank | 45 l | 11.9 gal (US) |
Hydraulic System | 35 l | 9.2 gal (US) |
Weight Increase from Minimum Configuration
Counterweight | 100 kg | 221 lb |
Cab | 115 kg | 254 lb |
Steel Tracks | 125 kg | 276 lb |
Long Stick | 25 kg | 55 lb |
Extra Counterweight | 250 kg | 551 lb |
Certification - Cab and Canopy
Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 | ISO 12117-2:2008 |
Top Guard | ISO 10262:1998 (Level I) | ISO 10262:1998 (Level I) |
Tip Over Protective Structure (TOPS) | ISO 12117:1997 | ISO 12117:1997 |
Sustainability
Recyclability | 95% | 95% |
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 |
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 |