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303.5 CR Mini Hydraulic Excavator

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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Net Power23.6HP

Engine ModelC1.7


Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/126923.6HP


NoteNet power is tested per ISO 9249 and 80/1269/EEC.

Gross Power - 2,400 rpm - SAE J199524.7HP

EmissionsMeets 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.


Operating Weight9239lb

Minimum Operating Weight with Canopy*7673lb

EU: CE Plate Weight with Cab***8004lb

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**9239lb

Maximum Operating Weight with Canopy**8930lb

EU: CE Plate Weight with Canopy***7784lb

Minimum Operating Weight with Cab*7982lb

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.

Dig Depth122.4in

Track Belt/Shoe Width11.8in

Maximum Reach216.9in

O/A Track Width70.1in

Maximum Blade Depth21.1in

Tail Swing without Counterweight35in

Stick Length61.4in

Swing Bearing - Height22.2in

Boom Swing - Left640mm

Overall Shipping Length*190.9in

Maximum Reach - Ground Level211.8in

Maximum Dump Clearance141.7in

O/A Shipping Height97.6in

Note*Overall Shipping Length depends on blade position during shipment.

Boom In Reach73.2in

Maximum Dig Height197.6in

Tail Swing with Counterweight37.8in

Vertical Wall94.1in

Boom Height - Shipping Position68.9in

Maximum Blade Height15.2in

O/A Undercarriage Length87.4in

Boom Swing - Right34.3°

Ground Clearance12.2in



Boom Swing - Right34.3°

Stick Length49.6in

Maximum Reach - Ground Level202in

Boom Swing - Left25.2°

Maximum Reach207.5in

Track Belt/Shoe Width11.8in

Maximum Dump Clearance137.4in

Swing Bearing - Height22.2in

Boom Height - Shipping Position59.8in

O/A Shipping Height97.6in

Overall Shipping Length*189in

Boom In Reach69.3in

Note*Overall Shipping Length depends on blade position during shipment.

Maximum Dig Height193.7in

Vertical Wall88.6in

Dig Depth110.6in

Tail Swing with Counterweight37.8in

Tail Swing with Extra Counterweight39.6in

O/A Undercarriage Length87.4in

Tail Swing without Counterweight35in

Maximum Blade Depth21.1in

Maximum Blade Height15.2in

Ground Clearance12.2in

Fuel Tank11.9gal (US)

Hydraulic Tank5.3gal (US)

Cooling System1.8gal (US)

Engine Oil1.6gal (US)

Hydraulic System11.9gal (US)

Ground Pressure - Minimum Weight4.3psi

Maximum Traction Force - High Speed3799lbf

Maximum Traction Force - Low Speed6969lbf

Travel Speed - High2.8mile/h

Gradeability - Maximum30 degrees

Travel Speed - Low1.6mile/h

Ground Pressure - Maximum Weight5.2psi

Pump Flow at 2,400 rpm26gal/min

Auxiliary Circuit - Primary - Flow18gal/min

Operating Pressure - Swing2625psi

TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump

Auxiliary Circuit - Secondary - Pressure3553psi

Digging Force - Stick - Long3799lbf

Auxiliary Circuit - Secondary - Flow7gal/min

Digging Force - Bucket7419lbf

Operating Pressure - Travel3553psi

Operating Pressure - Equipment3553psi

Auxiliary Circuit - Primary - Pressure3553psi

Digging Force - Stick - Standard4249lbf

Note*Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

NoteEuropean Union Directive ‚ "2000/14/EC"

Operator Sound Pressure (ISO 6396:2008)78dB(A)

Average Exterior Sound Pressure (ISO 6395:2008)94dB(A)

Steel Tracks287lb

Long Stick44lb



Extra Counterweight551lb

Angle Blade353lb

Machine Swing Speed9r/min

Boom Swing - Left75°

Boom Swing - Right50°

Roll Over Protective Structure (ROPS)ISO 12117-2:2008

Tip Over Protective Structure (TOPS)ISO 12117:1997

Top GuardISO 10262:1998 (Level I)

Tail Swing with Extra Counterweight39.6in

Tail Swing with Extra Counterweight39.6in



Cat C1.7 NA 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


Smart Tech Electronic Pump


Automatic Swing Brake

Auxiliary Hydraulic Lines

One and Two Way Auxiliary Flow

Continuous Auxiliary Flow

Auxiliary Line Quick Disconnects


Tilt-up Canopy or Tilt-Up Cab

Top Guard ISO 10262:1998 Level I

ROPS – ISO 12117-2:2008

TOPS – ISO 12117:1997

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


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)

Next Generation Advanced Monitor (Optional)
– 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


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)


Rubber Belt (300 mm/11.8 in wide)

Dozer Blade

Dozer Blade Float

Angle Blade

Tie Downs on Track Frame


Steel Track (300 mm/11.8 in wide)


One Piece Boom (2400 mm/94.5 in)

Standard Stick (1260 mm/49.6 in)

Front Shovel Capable – Pin-On

Thumb Ready (not available in all regions)

Certified Lifting Eye (optional in some regions)


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)

Front Shovel Capable – Hydraulic Coupler


12 Volt Battery

Software (machine and monitor)

Maintenance Free Battery

Signaling/Warning Horn

12 Volt Power Socket


Battery Disconnect

Product Link PL243 (regulations apply)

Product Link PLE643 (regulations apply)

Travel Alarm (standard in some regions)


Guard, Canopy

Guard, Mesh


Bio Oil Capable

Eco Drain

Water Jacket Heater

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See Available Used options



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