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
Net Power |
23.5 HP |
Engine Model |
Cat C1.3 |
Gross Power - ISO 14396 |
24.8 HP |
Note |
Cat C1.3 engine meets U.S. EPA Tier 4 Final/EU Stage V emission standards. |
Stroke |
88 mm |
Bore |
78 mm |
Displacement |
1.3 l |
Gross Power |
24.8 HP |
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269 |
23.5 HP |
Weights
Operating Weight - With Cab |
3267 kg |
Operating Weight - With Canopy |
3048 kg |
Note |
Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. |
Travel System
Maximum Traction Force - Low Speed |
30.9 kN |
Travel Speed - High |
4.5 km/h |
Travel Speed - Low |
2.4 km/h |
Maximum Traction Force - High Speed |
15.2 kN |
Ground Pressure - Cab Standard Stick |
32.6 kPa |
Ground Pressure - Cab Long Stick |
33 kPa |
Ground Pressure with Canopy - Long Stick, Optional Counterweight |
33.5 kPa |
Ground Pressure - Canopy Standard Stick |
30.4 kPa |
Gradeability - Continuous Operation |
20° |
Ground Pressure - Canopy Long Stick |
30.8 kPa |
Ground Pressure with Canopy - Standard Stick, Optional Counterweight |
33 kPa |
Ground Pressure with Cab - Standard Stick, Optional Counterweight |
35.2 kPa |
Gradeability (< 10 minutes Operation) |
30° |
Ground Pressure with Cab - Long Stick, Optional Counterweight |
35.6 kPa |
Hydraulic System
Operating Pressure - Swing |
181 bar |
Digging Force - Bucket |
28.4 kN |
Pump Flow at 2,400 rpm |
88 l/min |
Operating Pressure - Travel |
245 bar |
Digging Force - Stick - Standard |
16.6 kN |
Operating Pressure - Equipment |
245 bar |
Type |
Load Sensing Hydraulics with Variable Displacement Piston Pump |
Auxiliary Circuit - Secondary (174 bar/2,523 psi) |
27 l/min |
Digging Force - Stick - Long |
14.8 kN |
Auxiliary Circuit - Primary (186 bar/2,697 psi) |
60 l/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 |
1550 mm |
Height |
335 mm |
Dig Depth |
472 mm |
Lift Height |
402 mm |
Service Refill Capacities
Engine Oil |
5.7 l |
Fuel Tank |
45 l |
Hydraulic Tank |
47 l |
Cooling System |
4.7 l |
Hydraulic System |
65 l |
Undercarriage
Number of Carrier Rollers |
1 |
Track Roller Type |
Center Flange |
Number of Track Rollers |
4 |
Certification - Cab and Canopy
Top Guard |
ISO 10262:1998 (Level I) |
Roll Over Protective Structure (ROPS) |
ISO 12117-2:2008 |
Tip Over Protective Structure (TOPS) |
ISO 12117:1997 |
Dimensions (Approximate) - Long Stick
Dig Depth |
2980 mm |
Maximum Reach |
5040 mm |
Track Belt/Shoe Width |
300 mm |
Overall Undercarriage Length |
2080 mm |
Overall Shipping Height |
2500 mm |
Maximum Reach - Ground Level |
4910 mm |
Tail Swing |
775 mm |
Vertical Wall |
1750 mm |
Boom In Reach |
2000 mm |
Maximum Dig Height |
4250 mm |
Boom Swing Right |
825 mm |
Maximum Blade Depth |
470 mm |
Tail Swing with Extra Counterweight |
890 mm |
Maximum Blade Height |
400 mm |
Overall Track Width |
1550 mm |
Swing Bearing Height |
565 mm |
Boom Height in Shipping Position |
1600 mm |
Boom Swing Left |
610 mm |
Maximum Dump Clearance |
2970 mm |
Overall Shipping Length |
5030 mm |
Lift Capacities at Ground Level* - Lift Point Radius: 3000 mm (9'8")
Blade Down - Side |
540 kg |
Blade Down - Front |
1170 kg |
Blade Up - Side |
490 kg |
Blade Up - Front |
650 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. |
Operating Specifications
Machine Overhang with Counterweight |
115 mm |
Machine Overhang |
0 mm |
Stick Length - Long |
1560 mm |
Stick Length - Standard |
1260 mm |
Lift Capacities at Ground Level* - Lift Point Radius: 4000 mm (13'1")
Blade Up - Side |
300 kg |
Blade Down - Front |
740 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. |
Blade Down - Side |
340 kg |
Blade Up - Front |
410 kg |
Dimensions (Approximate) - Standard Stick
Tail Swing |
775 mm |
Maximum Dump Clearance |
3150 mm |
Track Belt/Shoe Width |
300 mm |
Overall Track Width |
1550 mm |
Maximum Dig Height |
4530 mm |
Dig Depth |
2750 mm |
Overall Undercarriage Length |
2080 mm |
Boom Swing Left |
610 mm |
Boom Swing Right |
825 mm |
Tail Swing with Extra Counterweight |
890 mm |
Maximum Blade Height |
402 mm |
Maximum Blade Depth |
472 mm |
Boom Height in Shipping Position |
1590 mm |
Swing Bearing Height |
565 mm |
Maximum Reach |
4950 mm |
Overall Shipping Height |
2500 mm |
Vertical Wall |
1960 mm |
Overall Shipping Length |
4470 mm |
Maximum Reach - Ground Level |
4810 mm |
Boom In Reach |
2110 mm |
Weights*
Operating Weight with Canopy - Long Stick, Optional Counterweight |
3356 kg |
Operating Weight with Canopy - Long Stick |
3090 kg |
Operating Weight with Cab - Standard Stick |
3267 kg |
Operating Weight with Canopy - Standard Stick |
3048 kg |
Operating Weight with Cab - Standard Stick, Optional Counterweight |
3533 kg |
Operating Weight with Cab - Long Stick |
3309 kg |
Note |
*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. |
Operating Weight with Canopy - Standard Stick, Optional Counterweight |
3314 kg |
Operating Weight with Cab - Long Stick, Optional Counterweight |
3575 kg |
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.Transport
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.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.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.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.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.Customer Support You Can Count On
Your Cat dealer is ready to assist you with your purchase decision and everything after.Superior parts availability keeps you working.
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 (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
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
Rubber track
Retractable seatbelt
Standard stick
Suspension seat, vinyl covered
dquo;Thumb ready” sticks
Travel alarm (optional in Europe)
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
dquo;Thumb ready” sticks
Automatic swing park brake
Foot travel pedals
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
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