The Cat® 303E CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.
Dimensions (Approximate) - Long Stick | |
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Boom Height in Shipping Position | 63 in / 1600 mm |
Boom Swing Left | 24 in / 610 mm |
Boom Swing Right | 32 in / 825 mm |
Dig Depth | 117 in / 2980 mm |
Maximum Blade Depth | 19 in / 470 mm |
Maximum Blade Height | 16 in / 400 mm |
Maximum Dig Height | 167 in / 4250 mm |
Maximum Dump Clearance | 117 in / 2970 mm |
Maximum Reach | 198 in / 5040 mm |
Maximum Reach - Ground Level | 193 in / 4910 mm |
Overall Shipping Height | 98 in / 2500 mm |
Overall Shipping Length | 198 in / 5030 mm |
Overall Track Width | 61 in / 1550 mm |
Overall Undercarriage Length | 82 in / 2080 mm |
Swing Bearing Height | 22 in / 565 mm |
Tail Swing | 31 in / 775 mm |
Tail Swing with Extra Counterweight | 35 in / 890 mm |
Track Belt/Shoe Width | 12 in / 300 mm |
Vertical Wall | 69 in / 1750 mm |
Travel System | |
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Gradeability (< 10 minutes Operation) | 30° |
Gradeability - Continuous Operation | 20° |
Ground Pressure - Cab Long Stick | 4.8 psi / 33 kPa |
Ground Pressure - Cab Standard Stick | 4.7 psi / 32.6 kPa |
Ground Pressure - Canopy Long Stick | 4.5 psi / 30.8 kPa |
Ground Pressure - Canopy Standard Stick | 4.4 psi / 30.4 kPa |
Ground Pressure with Cab - Long Stick, Optional Counterweight | 5.2 psi / 35.6 kPa |
Ground Pressure with Cab - Standard Stick, Optional Counterweight | 5.1 psi / 35.2 kPa |
Ground Pressure with Canopy - Long Stick, Optional Counterweight | 4.9 psi / 33.5 kPa |
Ground Pressure with Canopy - Standard Stick, Optional Counterweight | 4.8 psi / 33 kPa |
Maximum Traction Force - High Speed | 3417 lbf / 15.2 kN |
Maximum Traction Force - Low Speed | 6947 lbf / 30.9 kN |
Travel Speed - High | 2.8 mile/h / 4.5 km/h |
Travel Speed - Low | 1.5 mile/h / 2.4 km/h |
Dimensions (Approximate) - Standard Stick | |
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Boom Height in Shipping Position | 63 in / 1590 mm |
Boom In Reach | 83 in / 2110 mm |
Boom Swing Left | 24 in / 610 mm |
Boom Swing Right | 32 in / 825 mm |
Dig Depth | 108 in / 2750 mm |
Maximum Blade Depth | 19 in / 472 mm |
Maximum Blade Height | 16 in / 402 mm |
Maximum Dig Height | 178 in / 4530 mm |
Maximum Dump Clearance | 124 in / 3150 mm |
Maximum Reach | 195 in / 4950 mm |
Maximum Reach - Ground Level | 189 in / 4810 mm |
Overall Shipping Height | 98 in / 2500 mm |
Overall Shipping Length | 176 in / 4470 mm |
Overall Track Width | 60 in / 1550 mm |
Overall Undercarriage Length | 82 in / 2080 mm |
Swing Bearing Height | 22 in / 565 mm |
Tail Swing | 31 in / 775 mm |
Tail Swing with Extra Counterweight | 35 in / 890 mm |
Track Belt/Shoe Width | 12 in / 300 mm |
Vertical Wall | 77 in / 1960 mm |
Hydraulic System | |
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Auxiliary Circuit - Primary (186 bar/2,697 psi) | 15.9 gal/min / 60 l/min |
Auxiliary Circuit - Secondary (174 bar/2,523 psi) | 7.1 gal/min / 27 l/min |
Digging Force - Stick - Long | 3327 lbf / 14.8 kN |
Digging Force - Bucket | 6385 lbf / 28.4 kN |
Digging Force - Stick - Standard | 3732 lbf / 16.6 kN |
Operating Pressure - Equipment | 3553 psi / 245 bar |
Operating Pressure - Swing | 2625 psi / 181 bar |
Operating Pressure - Travel | 3553 psi / 245 bar |
Pump Flow at 2,400 rpm | 23.1 gal/min / 88 l/min |
Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
Lift Capacities at Ground Level* - Lift Point Radius: 3000 mm (9'8 | |
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Blade Down - Front | 2580 lb / 1170 kg |
Blade Down - Side | 1191 lb / 540 kg |
Blade Up - Front | 1433 lb / 650 kg |
Blade Up - Side | 1080 lb / 490 kg |
Note | *The above loads are in compliance with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. The excavator bucket weight is not included on this chart. Lifting capacities are for machine with cab, optional counterweight and standard stick. |
Lift Capacities at Ground Level* - Lift Point Radius: 4000 mm (13'1 | |
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Blade Down - Front | 1632 lb / 740 kg |
Blade Down - Side | 750 lb / 340 kg |
Blade Up - Front | 904 lb / 410 kg |
Blade Up - Side | 662 lb / 300 kg |
Note | *The above loads are in compliance with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. The excavator bucket weight is not included on this chart. Lifting capacities are for machine with cab, optional counterweight and standard stick. |
Operating Specifications | |
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Machine Overhang | 0 in / 0 mm |
Machine Overhang with Counterweight | 5 in / 115 mm |
Stick Length - Long | 61 in / 1560 mm |
Stick Length - Standard | 50 in / 1260 mm |
Weights* | |
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Note | *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. |
Operating Weight with Cab - Long Stick | 7296 lb / 3309 kg |
Operating Weight with Cab - Long Stick, Optional Counterweight | 7883 lb / 3575 kg |
Operating Weight with Cab - Standard Stick | 7204 lb / 3267 kg |
Operating Weight with Cab - Standard Stick, Optional Counterweight | 7790 lb / 3533 kg |
Operating Weight with Canopy - Long Stick | 6813 lb / 3090 kg |
Operating Weight with Canopy - Long Stick, Optional Counterweight | 7400 lb / 3356 kg |
Operating Weight with Canopy - Standard Stick | 6721 lb / 3048 kg |
Operating Weight with Canopy - Standard Stick, Optional Counterweight | 7307 lb / 3314 kg |
Engine | |
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Engine Model | Cat C1.3 |
Net Power | 23.5 HP / 17.5 kW |
Gross Power - ISO 14396 | 24.8 HP / 18.5 kW |
Bore | 3.1 in / 78 mm |
Displacement | 77 in³ / 1.3 l |
Stroke | 3.5 in / 88 mm |
Gross Power | 24.8 HP / 18.5 kW |
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269 | 23.5 HP / 17.5 kW |
Weights | |
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Operating Weight - With Cab | 7204 lb / 3267 kg |
Operating Weight - With Canopy | 6721 lb / 3048 kg |
Note | Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. |
Swing System | |
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Machine Swing Speed | 9 r/min |
Boom Swing - Left* | 80° |
Boom Swing - Right | 50° |
Note | *Automatic swing brake, spring applied, hydraulic release. |
Blade | |
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Width | 60 in / 1550 mm |
Height | 13 in / 335 mm |
Dig Depth | 19 in / 472 mm |
Lift Height | 16 in / 402 mm |
Service Refill Capacities | |
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Cooling System | 1.2 gal (US) / 4.7 l |
Engine Oil | 1.5 gal (US) / 5.7 l |
Fuel Tank | 11.9 gal (US) / 45 l |
Hydraulic System | 17.2 gal (US) / 65 l |
Hydraulic Tank | 12.4 gal (US) / 47 l |
Certification - Cab and Canopy | |
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Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
Tip Over Protective Structure (TOPS) | ISO 12117:1997 |
Top Guard | ISO 10262:1998 (Level I) |
Undercarriage | |
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Number of Carrier Rollers | 1 |
Number of Track Rollers | 4 |
Track Roller Type | Center Flange |
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