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HOME BRANDS & PRODUCTS CAT PRODUCT LINE EQUIPMENT EXCAVATORS MINI EXCAVATORS 303.5E CR HYDRAULIC EXCAVATOR

303.5E CR HYDRAULIC EXCAVATOR

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The Cat 303.5E CR delivers high performance in a compact radius design to help you work in the tightest applications.

SPECIFICATIONS

Engine ModelCat® C1.8

Net Power23.6 kW

Gross Power24.8 kW

BENEFITS AND FEATURES

OPERATOR STATION

operator station

Superior comfort to keep you productive throughout the work day.

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PERFORMANCE

performance

Powerful digging with precise control.

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ZERO TAIL SWING

zero tail swing

Work in the tightest areas.

LEARN MORE

engine

Engine ModelCat® C1.8

Net Power23.6 kW

Gross Power24.8 kW

weights

Operating Weight3508.0 kg

Operating Weight with Cab3692.0 kg

dimensions

Max digging depth - standard stick2880.0 mm

Max reach ground level - standard stick5060.0 mm

Height over cab2500.0 mm

Max cutting height - long stick5030.0 mm

Max cutting height - standard stick4920.0 mm

Max dump height - long stick3640.0 mm

Max dump height - standard stick3520.0 mm

Max horizontal reach - long stick5440.0 mm

Max horizontal reach - standard stick5200.0 mm

Max vertical dig depth - long stick2470.0 mm

Max vertical dig depth - standard stick2320.0 mm

Shipping Height2500.0 mm

Shipping Length4730.0 mm

Track Shoe Width300.0 mm

Transport Width1780.0 mm

engine dimensions

Bore87.0 mm

Stroke102.4 mm

Displacement1.8 L

travel system

Max traction force - high speed16.9 kN

Max traction force - low speed31.0 kN

Travel Speed - High4.6 km/h

Travel Speed - Low2.6 km/h

hydraulic system

Operating Pressure - Equipment245.0 bar

Digging Forces - Stick (standard)18.9 kN

Digging Force - Stick (long)16.9 kN

Digging Force - Bucket33.0 kN

Operating Pressure - Travel245.0 bar

Operating Pressure - Swing181.0 bar

Auxiliary circuit - primary60.0 L/min

Auxiliary circuit - secondary27.0 L/min

swing system

Machine Swing Speed9.0 RPM

Boom swing - left (without stop)80.0 Degrees

Boom swing - left (with stop)55.0 Degrees

Boom Swing - Right50.0 Degrees

blade

Width1780.0 mm

Height325.0 mm

Dig Depth470.0 mm

Lift Height400.0 mm

service refill capacities

Cooling System5.5 L

Engine Oil7.0 L

Hydraulic Tank42.3 L

Fuel Tank46.0 L

Hydraulic System65.0 L

msc comments

MSC Spec Date3/06

BENEFITS AND FEATURES

OPERATOR STATION

OPERATOR STATION

Superior comfort to keep you productive throughout the work day.

LEARN MORE
PERFORMANCE

PERFORMANCE

Powerful digging with precise control.

LEARN MORE
ZERO TAIL SWING

ZERO TAIL SWING

Work in the tightest areas.

LEARN MORE
COUPLER AND WORK TOOL OPTIONS

COUPLER AND WORK TOOL OPTIONS

New coupler design and multiple work tools increase versatility.

LEARN MORE
DOZER BLADE

DOZER BLADE

Standard dozer blade maximizes productivity.

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SERVICEABILITY

SERVICEABILITY

Simplified service and maintenance saves you time and money.

LEARN MORE
CUSTOMER SUPPORT

CUSTOMER SUPPORT

Support you can count on.

LEARN MORE

303.5E CR STANDARD EQUIPMENT

  • 1way and 2way combined function auxiliary hydraulic lines
  • adjustable wrist rests
  • alternator
  • automatic engine idle
  • automatic swing park brake
  • automatic two speed travel
  • auxiliary line quick disconnects
  • boom cylinder guard
  • cab mounted work light
  • canopy with fops iso 10262 level 1 and tipover protection tops iso 12117
  • coat hook
  • cup holder
  • control pattern changer not available in europe
  • compass display panel
  • dozer blade with float function
  • floor mat
  • 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 optional in europe
  • lockable storage box
  • low maintenance linkage pin joints
  • maintenance free battery
  • rubber track
  • seatbelt 76 mm 3 in wide retractable optional in europe
  • standard stick
  • suspension seat vinyl covered
  • "thumb ready" stick standard equipment in all regions except europe
  • travel alarm optional in europe

303.5E CR OPTIONS

    • air conditioning
    • angle dozer blade with float function
    • beacon socket for canopy machines
    • boom check valve europe only
    • boom mounted light
    • cab radio ready with fops iso 10262 level 1 tipover protection tops iso 12117 heaterdefroster interior light and windshield wiperwasher
    • ecology drain valve for hydraulic tank
    • ecology drain valve for engine oil
    • fan and sun blind installation
    • front screen guard for cab and canopy
    • high back suspension seat fabric covered
    • hydraulic quick coupler lines
    • long stick
    • mechanical quick coupler
    • mirrors for cab and canopy
    • secondary auxiliary hydraulic lines
    • steel track and steel track with rubber pads
Back

MOTEUR

Superior comfort to keep you productive throughout the work day.

BENEFITS AND FEATURES

Comfortable Working Environment Spacious and comfortable operator station with excellent visibility and legroom keeps the operator comfortable and reduces fatigue. Standard features include:

  • Reclining suspension seat with adjustable wrist rests.
  • Pilot operated controls on all services including travel levers and dozer functions.
  • Two post canopy design for better visibility to the work area.
  • A pattern control changer (not available in all regions) is accessible from the cab to switch between excavator and backhoe style controls.
  • Ample storage space under the seat that can be locked for added security.

Optional Enclosed Cab For even greater operator comfort, an enclosed cab is available as an option and features:

  • Sealed cab with heat and optional air conditioning to keep you comfortable in a wide range of conditions.
  • Radio ready with speakers and easy radio installation.
  • Removable lower front window and sliding windows for excellent overall visibility.
  • Gas assisted front window slides up with minimal effort.
  • Sliding door system offers good access and maintains the machine’s compact dimensions, reducing the risk of damage.

Joystick Controls The boom swing and auxiliary hydraulic functions are located at your fingertips providing smooth, easy operation. These joystick mounted controls deliver more productivity through precise movement of the boom swing and auxiliary functions. They also eliminate foot pedals and free up the floor for more room for the operator’s feet. 100% pilot controls provide consistent flow and pressure throughout the life of the machine. This also allows all controls to be locked out while starting the machine and when the safety lockout bar is in the up position.

COMPASS Display Panel Unlock the new features and experience the value of the exclusive COMPASS control panel on the new E series Excavators. The brand new Complete Operation, Maintenance, Performance and Security System on the Caterpillar E series mini hydraulic excavators was specifically designed by Caterpillar for compact excavators. It adds several new features to the machines increasing the amount of customer value:

  • A Standard Anti-theft Security System
  • Adjustable Work Tool Auxiliary Flow Control
  • Continuous Flow
  • Economy Mode - save up to 20% fuel while maintaining high productivity with the push of a button.
Operator Station

Powerful digging with precise control.

BENEFITS AND FEATURES

Stability All four E-Series models feature increased stability, while maintaining the compact radius design. This increased stability leads to more productivity and versatility through the use of heavier work tools and the optional long stick.

Fast, Powerful Digging with Load Sensing Hydraulics High digging forces and fast cycle times deliver the productivity that your job demands. Load sensing hydraulics optimize flow for smooth, powerful performance and increased fuel efficiency.

Engine High performance power train provides optimized engine horsepower and strong performance. Engine meets U.S. EPA Tier 4 Interim and EU Stage IIIA emissions requirements. Automatic engine idle automatically lowers engine revolutions when not in use to conserve fuel and lower environmental noise and emissions. The E-Series models feature an engine kill switch conveniently located in the cab and accessible from ground level.

Automatic Two Speed With the standard automatic two speed feature, the machine will automatically balance high speed and torque travel requirements based on the conditions to give the operator the optimum speed and control. The machine can be put in low gear if slower travel is desired while in tight conditions.

200 Degree Bucket Rotation Industry leading bucket rotation of over 200 degrees provides greater material retention during truck loading. It also allows for easier vertical wall digging without having to reposition the machine.

Performance

Work in the tightest areas.

BENEFITS AND FEATURES

Zero Tail Swing The 303.5E CR features a zero tail swing design. On these models, the radius of the upper body stays entirely within the width of the undercarriage.

Zero Tail Swing

New coupler design and multiple work tools increase versatility.

BENEFITS AND FEATURES

Couplers The E-Series is available with a mechanical pin-grabber or a hydraulic pin-grabber quick coupler option. The coupler design uses a wedge to keep the tool secure to the coupler, reducing wear and maintaining a tight fit through the life of the coupler. The hydraulic coupler allows the operator to change tools without leaving the comfort of the cab.

Wide Range of Work Tools A wide range of Cat Work Tools have been designed specifically for the Cat Mini Hydraulic Excavators to maximize machine performance. Available work tools include:

  • Buckets (heavy duty and heavy duty capacity)
  • Tilting, Ditch Cleaning Buckets
  • Hydraulic Hammers
  • Augers
  • Thumbs (not available in all regions)
  • Vibratory Compactors
  • Quick Coupler

Standard Thumb Ready Sticks (optional in Europe) Machines come standard with stick mounted brackets, ready to fit a hydraulic thumb for even greater machine versatility. A factory installed bracket and relief valve make hydraulic thumb installation simple and cost-effective.

Standard Auxiliary Lines and Accumulator One-way and two-way auxiliary lines (combined function), including quick connections, are fitted as standard equipment so the machine comes ready to work. A standard accumulator allows for auxiliary pressure to be released, making connecting and disconnecting work tools safer and easier.

Coupler and Work Tool Options

Standard dozer blade maximizes productivity.

BENEFITS AND FEATURES

Simple Dozer Control with Float Function The dozer function is pilot controlled from inside the cab, providing smooth, proportional operation. The standard float function is enabled by pushing the lever fully forward into the detent position. Cleanup and backfilling is easier since the operator does not have to adjust the blade height during travel.

Excellent Blade Visibility Visibility to the blade is excellent in any position, allowing the blade to be positioned behind the operator and away from the front linkage for better access when back dragging and finishing in tight areas.

Angle Blade Option Increase machine versatility with the Cat angle dozer blade. Built for strength and durability, the hydraulic angle blade features a hardened steel wear edge and good protection to cylinders and hydraulic lines. The angle blade can be positioned straight ahead or angled up to 25 degrees to the left or right. This reduces the number of times required to back up and reposition when backfilling so you can finish the job faster. All functions of the blade are controlled with one joystick using a proportional roller switch for the angle function.

Dozer Blade

Stability and durability.

BENEFITS AND FEATURES

Rubber Track The standard rubber track lets you work on multiple surfaces such as grass, pavement or stone without damaging the surface or machine.

Steel Track Option Optional steel track is available for harsh conditions such as demolition. The extra weight of the steel tracks generally provides better stability when digging over the side of the machine.

Rubber Pads Optional rubber pads can be attached to the steel track to prevent damage to paved surfaces and minimize noise and vibration during travel with the steel track system. This option provides the maximum overall stability.

Undercarriage

Simplified service and maintenance saves you time and money.

BENEFITS AND FEATURES

Easy Service Convenient service features make maintenance easy, reducing your downtime:

  • Lifting side hood allows access to air filter, main implement valve, 1-way/2-way auxiliary flow selector, accumulator, fuel filter and hydraulic tank. This eliminates the need to lift the cab when maintaining and servicing the machine.
  • Swing out rear door provides access to major components and service points including engine oil check and fill, vertically mounted engine oil filter, starter motor and alternator.
  • Easy access to the radiator and oil cooler results in simplified cleaning and reduced maintenance times.
  • SOSSM oil sampling valve allows easy sampling of the hydraulic fluid for preventative maintenance.
  • 500 hour engine oil and filter change period reduces operating costs and machine downtime.
Serviceability

Support you can count on.

BENEFITS AND FEATURES

Superior Dealer Services Your Cat dealer is ready to assist you with your purchase decision and everything after.

  • Financing packages are flexible to meet your needs.
  • Unmatched parts availability keeps you working.
  • Make comparisons of machines, with estimates of component life, preventative maintenance and cost of production.
  • Your Cat dealer can evaluate the cost to repair, rebuild and replace your machine.
  • For more information on Cat products, dealer services and industry solutions, visit www.cat.com.
Customer Support