303E CR Mini Excavator

303E CR Mini Hydraulic Excavator

Overview

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.

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.
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.
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.
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.
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.
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 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.
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.
Financing packages are flexible to meet your needs.
Superior parts availability keeps you working.

Engine

Displacement
77in³
Bore
3.1in
Stroke
3.5in
Note
Cat C1.3 engine meets U.S. EPA Tier 4 Final/EU Stage V emission standards.
Gross Power - ISO 14396
24.8HP
Engine Model
Cat C1.3
Net Power
23.5HP
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269
23.5HP
Gross Power
24.8HP

Weights

Operating Weight - With Canopy
6721lb
Operating Weight - With Cab
7204lb
Note
Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.

Dimensions (Approximate) - Standard Stick

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

Weights*

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

Travel System

Gradeability (< 10 minutes Operation)
30°
Ground Pressure with Cab - Long Stick, Optional Counterweight
5.2psi
Ground Pressure with Cab - Standard Stick, Optional Counterweight
5.1psi
Ground Pressure with Canopy - Standard Stick, Optional Counterweight
4.8psi
Ground Pressure - Canopy Long Stick
4.5psi
Gradeability - Continuous Operation
20°
Ground Pressure - Canopy Standard Stick
4.4psi
Ground Pressure with Canopy - Long Stick, Optional Counterweight
4.9psi
Ground Pressure - Cab Long Stick
4.8psi
Ground Pressure - Cab Standard Stick
4.7psi
Maximum Traction Force - High Speed
3417lbf
Maximum Traction Force - Low Speed
6947lbf
Travel Speed - High
2.8mile/h
Travel Speed - Low
1.5mile/h

Operating Specifications

Stick Length - Standard
50in
Stick Length - Long
61in
Machine Overhang
0in
Machine Overhang with Counterweight
5in

Dimensions (Approximate) - Long Stick

Overall Shipping Length
198in
Maximum Dump Clearance
117in
Boom Swing Left
24in
Boom Height in Shipping Position
63in
Swing Bearing Height
22in
Overall Track Width
61in
Maximum Blade Height
16in
Boom In Reach
79in
Maximum Dig Height
167in
Boom Swing Right
32in
Maximum Blade Depth
19in
Tail Swing with Extra Counterweight
35in
Vertical Wall
69in
Tail Swing
31in
Maximum Reach - Ground Level
193in
Overall Shipping Height
98in
Overall Undercarriage Length
82in
Track Belt/Shoe Width
12in
Maximum Reach
198in
Dig Depth
117in

Lift Capacities at Ground Level* - Lift Point Radius: 4000 mm (13'1")

Blade Up - Front
904lb
Blade Down - Side
750lb
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. Liftin
Blade Down - Front
1632lb
Blade Up - Side
662lb

Lift Capacities at Ground Level* - Lift Point Radius: 3000 mm (9'8")

Blade Down - Front
2580lb
Blade Up - Side
1080lb
Blade Up - Front
1433lb
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. Liftin
Blade Down - Side
1191lb

Hydraulic System

Digging Force - Stick - Long
3327lbf
Auxiliary Circuit - Primary (186 bar/2,697 psi)
15.9gal/min
Auxiliary Circuit - Secondary (174 bar/2,523 psi)
7.1gal/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Equipment
3553psi
Digging Force - Stick - Standard
3732lbf
Pump Flow at 2,400 rpm
23.1gal/min
Operating Pressure - Travel
3553psi
Digging Force - Bucket
6385lbf
Operating Pressure - Swing
2625psi

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)

Undercarriage

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

Service Refill Capacities

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

Blade

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

Swing System

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

Standard/Optional Features

Standard Equipment:

  • 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:

  • 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

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