New | 303E CR Mini Hydraulic Excavator

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.

Engine ModelCat C1.3
Net Power23.5 hp
Rated Net Power @ 2,400 rpm – ISO 9249/EEC 80/126923.5 hp
Gross Power – ISO 1439624.8 hp
Bore3.1 in
Stroke3.5 in
Displacement77 in3
Gross Power24.8 hp
Operating Weight with Canopy7297 lb
Operating Weight with Cab7782 lb
NoteWeight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Travel System
Travel Speed – High2.8 mph
Travel Speed – Low1.5 mph
Max Traction Force – High Speed3417 lb
Max Traction Force – Low Speed6946 lb
Ground Pressure4.6 psi
Gradeability (maximum)30°
Hydraulic System
TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm23.1 gal/min
Operating Pressure – Equipment3553 psi
Operating Pressure – Travel3553 psi
Operating Pressure – Swing2625 psi
Auxiliary Circuit – Primary (186 bar/2,734 psi)15.9 gal/min
Auxiliary Circuit – Secondary (174 bar/2,524 psi)7.1 gal/min
Digging Force – Stick (standard)3731 lb
Digging Force – Bucket6384 lb
Swing System
Machine Swing Speed9 rpm
Boom Swing – Left*80°
Boom Swing – Right50°
Note*Automatic swing brake, spring applied, hydraulic release.
Width60 in
Height13 in
Dig Depth19 in
Lift Height16 in
Service Refill Capacities
Cooling System1.2 gal
Engine Oil1.5 gal
Fuel Tank11.8 gal
Hydraulic Tank12.4 gal
Hydraulic System17.2 gal
Dimensions (Approximate)
Dig Depth108 in
Vertical Wall77 in
Maximum Reach at Ground Level189 in
Maximum Reach195 in
Maximum Dig Height178 in
Maximum Dump Clearance124 in
Boom In Reach83 in
Tail Swing35 in
Maximum Blade Height16 in
Maximum Blade Depth19 in
Boom Height in Shipping Position63 in
O/A Shipping Height98 in
Swing Bearing Height22 in
O/A Undercarriage Length87 in
O/A Shipping Length176 in
Boom Swing Right32 in
Boom Swing Left24 in
Track Belt/Shoe Width12 in
O/A Track Width60 in
Number of Carrier Rollers3
Number of Track Rollers3
Track Roller TypeDouble Flange
Certification – Cab and Canopy
Roll Over Protective Structure (ROPS)ISO 12117-2
Tip Over Protective Structure (TOPS)ISO 12117
Top GuardISO 10262 (Level I)

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.


With an operating weight of 3200 kg (7,055 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.

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.

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.

Safety and comfort all day.

Spacious and Ergonomic Working Environment

Your safety and comfort is incorporated into the design of every Cat machine.

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.

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.

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.

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.

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.

Standard Equipment

1-way and 2-way (combined function) auxiliary hydraulic lines
Adjustable armrests
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 (Level 1), ROPS ISO 12117-2 and TOPS ISO 12117
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
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
Rubber track
Retractable seatbelt
Standard stick
Suspension seat, vinyl covered
“Thumb ready” sticks
Travel alarm (optional in Europe)

Optional Equipment

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







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