303E CR Mini Excavator

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SPECS SUMMARY

Net Power23.5 HP (17.5 kW)
Operating Weight - With Cab7204 lb (3267 kg)
Dig Depth117 in (2980 mm)
Engine ModelCat C1.3
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

Net Power23.5 HP (17.5 kW)
Operating Weight - With Cab7204 lb (3267 kg)
Dig Depth117 in (2980 mm)
Engine ModelCat C1.3
Gross Power24.8 HP (18.5 kW)
Machine Swing Speed9 r/min (9 r/min)
Width60 in (1550 mm)
Height13 in (335 mm)
Dig Depth19 in (472 mm)
Lift Height16 in (402 mm)
Operating Weight with Cab - Standard Stick7204 lb (3267 kg)
Digging Force - Stick - Long3327 lbf (14.8 kN)
Operating Weight with Canopy - Standard Stick6721 lb (3048 kg)
Operating Weight with Cab - Standard Stick, Optional Counterweight7790 lb (3533 kg)
Maximum Blade Height16 in (402 mm)
Maximum Blade Depth19 in (470 mm)
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.
Maximum Dig Height167 in (4250 mm)
Boom Swing Right32 in (825 mm)
Auxiliary Circuit - Primary (186 bar/2,697 psi)15.9 gal/min (60 l/min)
Tail Swing with Extra Counterweight35 in (890 mm)
Blade Up - Front1433 lb (650 kg)
Blade Up - Side1080 lb (490 kg)
Stick Length - Long61 in (1560 mm)
Blade Down - Front2580 lb (1170 kg)
Boom Swing Right32 in (825 mm)
Boom Swing Left24 in (610 mm)
Boom In Reach79 in (2000 mm)
Operating Weight with Canopy - Long Stick6813 lb (3090 kg)
Vertical Wall69 in (1750 mm)
Auxiliary Circuit - Secondary (174 bar/2,523 psi)7.1 gal/min (27 l/min)
Blade Down - Side750 lb (340 kg)
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.
Maximum Blade Depth19 in (472 mm)
Maximum Blade Height16 in (400 mm)
Boom Height in Shipping Position63 in (1590 mm)
Ground Pressure with Canopy - Standard Stick, Optional Counterweight4.8 psi (33 kPa)
Operating Weight with Cab - Long Stick, Optional Counterweight7883 lb (3575 kg)
Ground Pressure with Cab - Long Stick, Optional Counterweight5.2 psi (35.6 kPa)
Gradeability (< 10 minutes Operation)30°
Ground Pressure with Cab - Standard Stick, Optional Counterweight5.1 psi (35.2 kPa)
Stick Length - Standard50 in (1260 mm)
Maximum Reach - Ground Level189 in (4810 mm)
Overall Shipping Length198 in (5030 mm)
Maximum Dump Clearance117 in (2970 mm)
Overall Shipping Length176 in (4470 mm)
Vertical Wall77 in (1960 mm)
Overall Shipping Height98 in (2500 mm)
Operating Weight with Canopy - Standard Stick, Optional Counterweight7307 lb (3314 kg)
Tail Swing with Extra Counterweight35 in (890 mm)
Note*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Maximum Reach195 in (4950 mm)
Boom Swing Left24 in (610 mm)
Ground Pressure - Canopy Long Stick4.5 psi (30.8 kPa)
Swing Bearing Height22 in (565 mm)
Boom Height in Shipping Position63 in (1600 mm)
Swing Bearing Height22 in (565 mm)
Gradeability - Continuous Operation20°
Overall Track Width61 in (1550 mm)
Blade Up - Front904 lb (410 kg)
Tail Swing31 in (775 mm)
Operating Weight with Cab - Long Stick7296 lb (3309 kg)
Ground Pressure - Canopy Standard Stick4.4 psi (30.4 kPa)
Maximum Reach - Ground Level193 in (4910 mm)
Overall Undercarriage Length82 in (2080 mm)
Pump Flow at 2,400 rpm23.1 gal/min (88 l/min)
Cooling System1.2 gal (US) (4.7 l)
Hydraulic Tank12.4 gal (US) (47 l)
Fuel Tank11.9 gal (US) (45 l)
Engine Oil1.5 gal (US) (5.7 l)
Note*Automatic swing brake, spring applied, hydraulic release.
Boom Swing - Right50°
Boom Swing - Left*80°
Operating Pressure - Equipment3553 psi (245 bar)
Digging Force - Stick - Standard3732 lbf (16.6 kN)
Operating Pressure - Travel3553 psi (245 bar)
Digging Force - Bucket6385 lbf (28.4 kN)
Number of Carrier Rollers1
Operating Pressure - Swing2625 psi (181 bar)
Maximum Traction Force - High Speed3417 lbf (15.2 kN)
Travel Speed - Low1.5 mile/h (2.4 km/h)
Travel Speed - High2.8 mile/h (4.5 km/h)
Maximum Traction Force - Low Speed6947 lbf (30.9 kN)
Displacement77 in³ (1.3 l)
Bore3.1 in (78 mm)
Stroke3.5 in (88 mm)
Operating Weight - With Canopy6721 lb (3048 kg)
NoteCat C1.3 engine meets U.S. EPA Tier 4 Final/EU Stage V emission standards.
Gross Power - ISO 1439624.8 HP (18.5 kW)
Hydraulic System17.2 gal (US) (65 l)
Track Roller TypeCenter Flange
Dig Depth108 in (2750 mm)
Track Belt/Shoe Width12 in (300 mm)
Maximum Dig Height178 in (4530 mm)
Blade Down - Front1632 lb (740 kg)
Overall Track Width60 in (1550 mm)
Track Belt/Shoe Width12 in (300 mm)
Operating Weight with Canopy - Long Stick, Optional Counterweight7400 lb (3356 kg)
Maximum Dump Clearance124 in (3150 mm)
Overall Shipping Height98 in (2500 mm)
Machine Overhang0 in (0 mm)
Ground Pressure with Canopy - Long Stick, Optional Counterweight4.9 psi (33.5 kPa)
Tail Swing31 in (775 mm)
Overall Undercarriage Length82 in (2080 mm)
Maximum Reach198 in (5040 mm)
NoteWeight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Ground Pressure - Cab Long Stick4.8 psi (33 kPa)
Blade Up - Side662 lb (300 kg)
Machine Overhang with Counterweight5 in (115 mm)
Blade Down - Side1191 lb (540 kg)
Ground Pressure - Cab Standard Stick4.7 psi (32.6 kPa)
Tip Over Protective Structure (TOPS)ISO 12117:1997
Roll Over Protective Structure (ROPS)ISO 12117-2:2008
Top GuardISO 10262:1998 (Level I)
TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump
Number of Track Rollers4
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/126923.5 HP (17.5 kW)
Boom In Reach83 in (2110 mm)

Benefits and Features

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.

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.

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.

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.

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.

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

Optional Equipment

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