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303.5 CR Mini Hydraulic Excavator

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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    Product Specs

    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 9249 and 80/1269/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 9239 lb
    Minimum Operating Weight with Canopy* 7673 lb
    EU: CE Plate Weight with Cab*** 8004 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** 9239 lb
    Maximum Operating Weight with Canopy** 8930 lb
    EU: CE Plate Weight with Canopy*** 7784 lb
    Minimum Operating Weight with Cab* 7982 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 3799 lbf
    Maximum Traction Force - Low Speed 6969 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 2625 psi
    Type Load Sensing Hydraulics with Variable Displacement Piston Pump
    Auxiliary Circuit - Secondary - Pressure 3553 psi
    Digging Force - Stick - Long 3799 lbf
    Auxiliary Circuit - Secondary - Flow 7 gal/min
    Digging Force - Bucket 7419 lbf
    Operating Pressure - Travel 3553 psi
    Operating Pressure - Equipment 3553 psi
    Auxiliary Circuit - Primary - Pressure 3553 psi
    Digging Force - Stick - Standard 4249 lbf
    Note *Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

    Sound

    Note European Union Directive ‚ "2000/14/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 12117-2:2008
    Tip Over Protective Structure (TOPS) ISO 12117:1997
    Top Guard ISO 10262:1998 (Level I)

    Dimensions (Approximate) - Long Stick

    Tail Swing with Extra Counterweight 39.6 in

    Sustainability

    Recyclability 95%