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303 CR Mini Hydraulic Excavator

303 CR Mini Hydraulic Excavator

The Cat® 303 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 ModelC1.1 Turbo

Gross Power - 2,400 rpm - SAE J1995:201424.7HP

Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC23.6HP

EmissionsMeets U.S. EPA Tier 4 Final and EU Stage V emission standards.

NoteAdvertised power is tested per the specified standard in effect at the time of manufacture.




Operating Weight7817lb

Note (1)*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***6791lb

Minimum Operating Weight with Cab*6924lb

EU: CE Plate Weight with Cab***7012lb

Maximum Operating Weight with Cab**7817lb

Minimum Operating Weight with Canopy*6670lb

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 Canopy**7552lb

Note (2)**Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight.

Dig Depth116.1in

Boom In Reach74.2in

Boom Swing - Right34.3in

Tail Swing33.3in

Maximum Dump Clearance130.3in

Tail Swing with Counterweight35in

Ground Clearance12.2in

O/A Undercarriage Length81.5in

O/A Shipping Height97.6in

Track Width - Expanded61in

Maximum Blade Depth21.1in

Maximum Reach - Ground Level201.2in

Stick Length61.4in

Overall Shipping Length*179.5in

Maximum Dig Height183.1in

Swing Bearing - Height22.4in

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

Tail Swing without Counterweight30.5in

Maximum Blade Height15.2in

Boom Swing - Left25.2in

Vertical Wall81.5in

Boom Height - Shipping Position75.6in

Track Belt/Shoe Width11.8in

Maximum Reach206.3in



Track Shoe Width61in

Boom Swing - Right34.3in

Tail Swing with Extra Counterweight35in

Swing Bearing - Height22.4in

Ground Clearance12.2in

Tail Swing33.3in

Maximum Blade Height15.2in

Dig Depth104.3in

Maximum Dump Clearance124.8in

Maximum Reach - Ground Level190.2in

Maximum Reach196.1in

Track Belt/Shoe Width11.8in

Boom In Reach68.9in

Stick Length49.6in

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

Maximum Blade Depth21.1in

Tail Swing without Counterweight30.5in

Maximum Dig Height177.6in

O/A Undercarriage Length81.5in

Boom Height - Shipping Position63in

Vertical Wall71.7in

Overall Shipping Length*177.6in

Boom Swing - Left25.2in

O/A Shipping Height97.6in

Ground Pressure - Maximum Weight4.7psi

Ground Pressure - Minimum Weight4psi

Travel Speed - High2.8mile/h

Maximum Traction Force - Low Speed7059lbf

Travel Speed - Low1.6mile/h

Maximum Traction Force - High Speed3305lbf

Gradeability - Maximum30 degrees

Auxiliary Circuit - Secondary - Pressure3553psi

Operating Pressure - Swing2553psi

Pump Flow at 2,400 rpm26gal/min

TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump

Digging Force - Stick - Standard3732lbf

Operating Pressure - Travel3553psi

Digging Force - Bucket6385lbf

Operating Pressure - Equipment3553psi

Auxiliary Circuit - Primary - Pressure3553psi

Auxiliary Circuit - Secondary - Flow7gal/min

Digging Force - Stick - Long3327lbf

Auxiliary Circuit - Primary - Flow17gal/min

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



Extra Counterweight551lb

Steel Tracks276lb

Long Stick55lb

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

Top GuardISO 10262:1998 (Level I)

Tip Over Protective Structure (TOPS)ISO 12117:1997

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

NoteEuropean Union Directive “2000/14/EC”

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

Boom Swing - Left75°

Machine Swing Speed9r/min

Boom Swing - Right50°

Hydraulic Tank4.8gal (US)

Engine Oil1.1gal (US)

Hydraulic System9.2gal (US)

Fuel Tank11.9gal (US)

Cooling System1.1gal (US)



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


Smart Tech Electronic Pump


Automatic Swing Brake

Auxiliary Hydraulic Lines

One and Two Way Auxiliary Flow

Continuous Auxiliary Flow

Auxiliary Line Quick Disconnects


Top Guard ISO 10262:1998 Level I


Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)

Polycarbonate Half Height Front Guard (Canopy only)


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


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)


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


Rubber Belt (300 mm/11.8 in wide)

Dozer Blade

Dozer Blade Float

Tie Downs on Track Frame


Steel Track (300 mm/11.8 in wide)


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)


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)


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)


Bio Oil Capable

Eco Drain

Water Jacket Heater

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See Available Used options



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