303E CR

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.


SPECIFICATIONS
Dimensions (Approximate) - Long Stick
Boom Height in Shipping Position 63 in


Travel System
Gradeability (< 10 minutes Operation) 30°


Dimensions (Approximate) - Long Stick
Boom Swing Left 24 in
Boom Swing Right 32 in
Dig Depth 117 in
Maximum Blade Depth 19 in
Maximum Blade Height 16 in
Maximum Dig Height 167 in
Maximum Dump Clearance 117 in
Maximum Reach 198 in
Maximum Reach - Ground Level 193 in
Overall Shipping Height 98 in
Overall Shipping Length 198 in
Overall Track Width 61 in
Overall Undercarriage Length 82 in
Swing Bearing Height 22 in
Tail Swing 31 in
Tail Swing with Extra Counterweight 35 in
Track Belt/Shoe Width 12 in
Vertical Wall 69 in


Dimensions (Approximate) - Standard Stick
Boom Height in Shipping Position 63 in
Boom In Reach 83 in
Boom Swing Left 24 in
Boom Swing Right 32 in
Dig Depth 108 in
Maximum Blade Depth 19 in
Maximum Blade Height 16 in
Maximum Dig Height 178 in
Maximum Dump Clearance 124 in
Maximum Reach 195 in
Maximum Reach - Ground Level 189 in
Overall Shipping Height 98 in
Overall Shipping Length 176 in
Overall Track Width 60 in
Overall Undercarriage Length 82 in
Swing Bearing Height 22 in
Tail Swing 31 in
Tail Swing with Extra Counterweight 35 in
Track Belt/Shoe Width 12 in
Vertical Wall 77 in


Hydraulic System
Auxiliary Circuit - Primary (186 bar/2,697 psi) 15.9 gal/min
Auxiliary Circuit - Secondary (174 bar/2,523 psi) 7.1 gal/min
Digging Force - Stick - Long 3327 lbf


Lift Capacities at Ground Level* - Lift Point Radius: 3000 mm (9'8")
Blade Down - Front 2580 lb
Blade Down - Side 1191 lb
Blade Up - Front 1433 lb
Blade Up - Side 1080 lb
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")
Blade Down - Front 1632 lb
Blade Down - Side 750 lb
Blade Up - Front 904 lb
Blade Up - Side 662 lb
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
Machine Overhang 0 in
Machine Overhang with Counterweight 5 in
Stick Length - Long 61 in
Stick Length - Standard 50 in


Travel System
Gradeability - Continuous Operation 20°
Ground Pressure - Cab Long Stick 4.8 psi
Ground Pressure - Cab Standard Stick 4.7 psi
Ground Pressure - Canopy Long Stick 4.5 psi
Ground Pressure - Canopy Standard Stick 4.4 psi
Ground Pressure with Cab - Long Stick, Optional Counterweight 5.2 psi
Ground Pressure with Cab - Standard Stick, Optional Counterweight 5.1 psi
Ground Pressure with Canopy - Long Stick, Optional Counterweight 4.9 psi
Ground Pressure with Canopy - Standard Stick, Optional Counterweight 4.8 psi


Weights*
Note *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Operating Weight with Cab - Long Stick 7296 lb
Operating Weight with Cab - Long Stick, Optional Counterweight 7883 lb
Operating Weight with Cab - Standard Stick 7204 lb
Operating Weight with Cab - Standard Stick, Optional Counterweight 7790 lb
Operating Weight with Canopy - Long Stick 6813 lb
Operating Weight with Canopy - Long Stick, Optional Counterweight 7400 lb
Operating Weight with Canopy - Standard Stick 6721 lb
Operating Weight with Canopy - Standard Stick, Optional Counterweight 7307 lb


Engine
Engine Model Cat C1.3
Net Power 23.5 HP
Gross Power - ISO 14396 24.8 HP


Weights
Operating Weight - With Cab 7204 lb
Operating Weight - With Canopy 6721 lb


Engine
Bore 3.1 in
Displacement 77 in³
Stroke 3.5 in


Travel System
Maximum Traction Force - High Speed 3417 lbf
Maximum Traction Force - Low Speed 6947 lbf
Travel Speed - High 2.8 mile/h
Travel Speed - Low 1.5 mile/h


Hydraulic System
Digging Force - Bucket 6385 lbf
Digging Force - Stick - Standard 3732 lbf
Operating Pressure - Equipment 3553 psi
Operating Pressure - Swing 2625 psi
Operating Pressure - Travel 3553 psi
Pump Flow at 2,400 rpm 23.1 gal/min


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


Blade
Width 60 in
Height 13 in
Dig Depth 19 in
Lift Height 16 in


Service Refill Capacities
Cooling System 1.2 gal (US)
Engine Oil 1.5 gal (US)
Fuel Tank 11.9 gal (US)
Hydraulic System 17.2 gal (US)
Hydraulic Tank 12.4 gal (US)


Engine
Gross Power 24.8 HP


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)


Engine
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269 23.5 HP


Hydraulic System
Type Load Sensing Hydraulics with Variable Displacement Piston Pump


Undercarriage
Number of Carrier Rollers 1
Number of Track Rollers 4
Track Roller Type Center Flange


Weights
Note Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.


BENEFITS & FEATURES
Solid Performance in a Small Package – Compact and efficient design provides superior power.


Compact Radius
The 303E allows you to easily reposition within a confined space and increase your overall productivity. Proficient movement is enhanced as a result of the limited tailswing and swing boom design.

Compact Radius


Transport
With an operating weight of 3048 kg (6,721 lb) and width of 1550 mm (60 in) the 303E is simple to load and position on a trailer with tie down points – getting you to the job site quicker.

Fuel Economy
Powered by the C1.3 engine, the 303E offers the performance and power required for your job with minimal fuel consumption.

Productivity and Durability – Designed for reliability.


Auxiliary Hydraulics
The 303E is ready to work. Hammer and two way lines with quick disconnect fittings are standard on every machine.

Auxiliary Hydraulics


The quick disconnects are located close to the tool to reduce hose length and decrease owning and operating costs associated with hose replacement.

Hose routings provide superior protection and cylinder guards decrease opportunity for machine damage.

Thumb Ready Stick
The machine is configured with brackets and relief valves for simple and cost effective mounting of a hydraulic thumb.

Dozer Blade
The durable blade and dozer float function provide the required design and capability to increase overall efficiency. Ground leveling and finishing applications are fast and easy with a single lever controlling all blade operation – up, down and float.

Superior Operating Experience – Safety and comfort all day.


Spacious and Ergonomic Working Environment
Your safety and comfort is incorporated into the design of every Cat® machine.

Spacious and Ergonomic Working Environment


The adjustable suspension seat, retractable seat belt and adjustable wrist rests allow you to customize the operating station to meet your needs. Ergonomically designed joystick control and travel levers reduce fatigue and improve productivity.

An easy to use pattern control selector and informative gauge panel ensure optimal operation.

Cat Interlock System aids in job site safety. When the hydraulic lockout lever is in the up position no operational function is possible – including travel.

Travel alarm as standard safety offering. An audible alarm alerts job site operators of machine travel (optional in Europe).

ROPS/TOPS/TOP GUARD certification ensures the machine is prepared to protect you.

*Cab unit includes sliding door and openable front window/removable lower window.

Simple Service and Maintenance Access – Low cost of ownership.


Easy Maintenance Access and Extended Service Intervals
Ease of access to daily maintenance check points ensures your machine is in prime condition to complete any task.

Easy Maintenance Access and Extended Service Intervals


Engine and hydraulic hoods are simple to open and offer outstanding visibility and convenience to check points.

500 hour engine oil and filter change period reduces operating costs and machine downtime.

Easy access to the engine oil check and fill, vertically mounted engine oil filter, starter motor and alternator, as well as the radiator and oil cooler all result in simplified cleaning and reduced maintenance times.

Unmatched Support and Solutions – Equipment, service and attachments to meet your needs.


Customized Solutions for Any Application
A range of tools is available to take advantage of the machine’s versatility. All tools are matched to the machine to optimize performance and deliver excellent value through high productivity and long life.

Customized Solutions for Any Application


Customer Support You Can Count On
Your Cat dealer is ready to assist you with your purchase decision and everything after.

Financing packages are flexible to meet your needs.

Superior parts availability keeps you working.

EQUIPMENT
Standard Equipment

STANDARD EQUIPMENT
  • 1-way and 2-way (combined function) auxiliary hydraulic lines
  • Adjustable armrests
  • Alternator
  • Automatic swing park brake
  • Automatic two speed travel
  • Auxiliary line quick disconnects
  • Boom cylinder guard
  • Cab mounted work light
  • Canopy with Top Guard ISO 10262:1998 (Level 1), ROPS ISO 12117-2:2008 and TOPS ISO 12117:1997
  • Coat hook
  • Cup holder
  • Control pattern changer
  • Dozer blade with float function
  • Foot travel pedals
  • Gauges or indicators for fuel level engine coolant temperature, hour meter, engine oil pressure, air cleaner, alternator and glow plugs, service interval
  • Horn
  • Hydraulic oil cooler
  • Lifting eye on bucket linkage (standard equipment for all regions except Europe)
  • Lockable storage box
  • Low maintenance linkage pin joints
  • Maintenance free battery
  • Product Link™
  • Rubber track
  • Retractable seatbelt
  • Standard stick
  • Suspension seat, vinyl covered
  • “Thumb ready” sticks
  • Travel alarm (optional in Europe)

Optional Equipment

OPTIONAL EQUIPMENT
  • Beacon socket for canopy machines
  • Boom mounted light
  • Cab, Top Guard ISO 10262:1998 (Level 1), ROPS ISO 12117-2:2008 and TOPS ISO 12117:1997
  • High back suspension seat, fabric covered
  • Mechanical quick coupler
  • Mirrors for cab and canopy
  • Steel track

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