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Mini Excavators 303E CR

An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.

Mini Excavators 303E CR

An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.
Units: USMetric

Blade

Width 60 in 1550 mm
Height 13 in 335 mm
Dig Depth 19 in 472 mm
Lift Height 16 in 402 mm
Units: USMetric

Certification - Cab and Canopy

Top Guard ISO 10262:1998 (Level I)
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Units: USMetric

Dimensions (Approximate) - Long Stick

Dig Depth 117 in 2980 mm
Maximum Reach 198 in 5040 mm
Track Belt/Shoe Width 12 in 300 mm
Overall Undercarriage Length 82 in 2080 mm
Overall Shipping Height 98 in 2500 mm
Maximum Reach - Ground Level 193 in 4910 mm
Tail Swing 31 in 775 mm
Vertical Wall 69 in 1750 mm
Boom In Reach 79 in 2000 mm
Maximum Dig Height 167 in 4250 mm
Boom Swing Right 32 in 825 mm
Maximum Blade Depth 19 in 470 mm
Tail Swing with Extra Counterweight 35 in 890 mm
Maximum Blade Height 16 in 400 mm
Overall Track Width 61 in 1550 mm
Swing Bearing Height 22 in 565 mm
Boom Height in Shipping Position 63 in 1600 mm
Boom Swing Left 24 in 610 mm
Maximum Dump Clearance 117 in 2970 mm
Overall Shipping Length 198 in 5030 mm
Units: USMetric

Dimensions (Approximate) - Standard Stick

Tail Swing 31 in 775 mm
Maximum Dump Clearance 124 in 3150 mm
Track Belt/Shoe Width 12 in 300 mm
Overall Track Width 60 in 1550 mm
Maximum Dig Height 178 in 4530 mm
Dig Depth 108 in 2750 mm
Overall Undercarriage Length 82 in 2080 mm
Boom Swing Left 24 in 610 mm
Boom Swing Right 32 in 825 mm
Tail Swing with Extra Counterweight 35 in 890 mm
Maximum Blade Height 16 in 402 mm
Maximum Blade Depth 19 in 472 mm
Boom Height in Shipping Position 63 in 1590 mm
Swing Bearing Height 22 in 565 mm
Maximum Reach 195 in 4950 mm
Overall Shipping Height 98 in 2500 mm
Vertical Wall 77 in 1960 mm
Overall Shipping Length 176 in 4470 mm
Maximum Reach - Ground Level 189 in 4810 mm
Boom In Reach 83 in 2110 mm
Units: USMetric

Engine

Net Power 23.5 HP 17.5 kW
Engine Model Cat C1.3
Gross Power 24.8 HP 18.5 kW
Gross Power - ISO 14396 24.8 HP 18.5 kW
Note Cat C1.3 engine meets U.S. EPA Tier 4 Final/EU Stage V emission standards.
Stroke 3.5 in 88 mm
Bore 3.1 in 78 mm
Displacement 77 in³ 1.3 l
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269 23.5 HP 17.5 kW
Units: USMetric

Hydraulic System

Operating Pressure - Swing 2625 psi 181 bar
Digging Force - Bucket 6385 lbf 28.4 kN
Pump Flow at 2,400 rpm 23.1 gal/min 88 l/min
Operating Pressure - Travel 3553 psi 245 bar
Digging Force - Stick - Standard 3732 lbf 16.6 kN
Operating Pressure - Equipment 3553 psi 245 bar
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Secondary (174 bar/2,523 psi) 7.1 gal/min 27 l/min
Digging Force - Stick - Long 3327 lbf 14.8 kN
Auxiliary Circuit - Primary (186 bar/2,697 psi) 15.9 gal/min 60 l/min
Units: USMetric

Lift Capacities at Ground Level* - Lift Point Radius: 3000 mm (9'8")

Blade Down - Side 1191 lb 540 kg
Blade Down - Front 2580 lb 1170 kg
Blade Up - Side 1080 lb 490 kg
Blade Up - Front 1433 lb 650 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.
Units: USMetric

Lift Capacities at Ground Level* - Lift Point Radius: 4000 mm (13'1")

Blade Up - Side 662 lb 300 kg
Blade Down - Front 1632 lb 740 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.
Blade Down - Side 750 lb 340 kg
Blade Up - Front 904 lb 410 kg
Units: USMetric

Operating Specifications

Machine Overhang with Counterweight 5 in 115 mm
Machine Overhang 0 in 0 mm
Stick Length - Long 61 in 1560 mm
Stick Length - Standard 50 in 1260 mm
Units: USMetric

Service Refill Capacities

Engine Oil 1.5 gal (US) 5.7 l
Fuel Tank 11.9 gal (US) 45 l
Hydraulic Tank 12.4 gal (US) 47 l
Cooling System 1.2 gal (US) 4.7 l
Hydraulic System 17.2 gal (US) 65 l
Units: USMetric

Swing System

Machine Swing Speed 9 r/min 9 r/min
Boom Swing - Left* 80°
Boom Swing - Right 50°
Note *Automatic swing brake, spring applied, hydraulic release.
Units: USMetric

Travel System

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
Maximum Traction Force - High Speed 3417 lbf 15.2 kN
Ground Pressure - Cab Standard Stick 4.7 psi 32.6 kPa
Ground Pressure - Cab Long Stick 4.8 psi 33 kPa
Ground Pressure with Canopy - Long Stick, Optional Counterweight 4.9 psi 33.5 kPa
Ground Pressure - Canopy Standard Stick 4.4 psi 30.4 kPa
Gradeability - Continuous Operation 20°
Ground Pressure - Canopy Long Stick 4.5 psi 30.8 kPa
Ground Pressure with Canopy - Standard Stick, Optional Counterweight 4.8 psi 33 kPa
Ground Pressure with Cab - Standard Stick, Optional Counterweight 5.1 psi 35.2 kPa
Gradeability (< 10 minutes Operation) 30°
Ground Pressure with Cab - Long Stick, Optional Counterweight 5.2 psi 35.6 kPa
Units: USMetric

Undercarriage

Number of Carrier Rollers 1
Track Roller Type Center Flange
Number of Track Rollers 4
Units: USMetric

Weights

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.
Units: USMetric

Weights*

Operating Weight with Canopy - Long Stick, Optional Counterweight 7400 lb 3356 kg
Operating Weight with Canopy - Long Stick 6813 lb 3090 kg
Operating Weight with Cab - Standard Stick 7204 lb 3267 kg
Operating Weight with Canopy - Standard Stick 6721 lb 3048 kg
Operating Weight with Cab - Standard Stick, Optional Counterweight 7790 lb 3533 kg
Operating Weight with Cab - Long Stick 7296 lb 3309 kg
Note *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Operating Weight with Canopy - Standard Stick, Optional Counterweight 7307 lb 3314 kg
Operating Weight with Cab - Long Stick, Optional Counterweight 7883 lb 3575 kg
STANDARD EQUIPMENT
1-way and 2-way (combined function) auxiliary hydraulic lines

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