Análisis de Miniexcavadora Caterpillar 303C-CR

7/27/2019 Anlisis de Miniexcavadora Caterpillar 303C-CR

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EngineModel Mitsubishi S3Q2Rated net power 22 kW 30 hp(ISO 9249)

WeightsOperating weight 3435 kg 7,575 lbwith canopyOperating weight 3555 kg 7,835 lbwith cab

Weight with counterweight, rubber tracks, bucket,operator, full fuel and auxiliary lines.

Weight varies depending on machine configuration.

303C CRMini HydraulicExcavators


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303C CR Mini Hydraulic Excavators Engineered by Caterpillar to deliver high levels of productivity, versatility and serviceability.

Powerful performance levels in a compact radius machine. The Cat 303C CR delivershigh productivity in the tightest applications.

Low Operating Costs

Robust, reliable and easily serviced arekey attributes of the C Series CRdesign. Service points are easilyaccessed through the rear door and sidecover and a 500-hour engine oil changeperiod lowers operating costs.pg. 6

Performance and Versatility

High dig forces, fast cycle times andhigh bucket rotation angles deliver theproductivity that customers demand. Achoice of stick lengths and Cat Work Tools makes the 303C CR even moreversatile. pg. 5

Comfort and Ease of Operation

Cab or canopy, the 303C CR offers aspacious and comfortable work areawith expansive legroom. Compactradius design gives greater machineversatility and the capability to work within confined areas. pg. 4


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Customer Support

Caterpillar dealers offer unmatchedcustomer support with excellentequipment management services andfast parts availability, resulting inmaximum uptime and minimum repaircosts. pg. 8

Angle Blade Configuration

The versatility and productivity of theCat C Series machine can be increasedeven further by ordering the hydraulicangling dozer blade configuration.pg. 7


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Impressive Cab Dimensions. TheCR C Series gives the operator a

comfortable and spacious workingenvironment with excellent visibility.

The clear flat floor space and superioroperator legroom provide high levels of

operator comfort and help minimizefatigue.

Optional Air Conditioning. Optional airconditioning or fan and sun blindpackage offers further operator comfort.

Sliding Cab Door. The sliding doorsystem offers good access andmaintains the machines compactdimensions to reduce the risk of damage.

Fully Pilot Operated Controls. Pilotoperated controls on all servicesincluding travel levers and dozerfunction ensure that as new levels of controllability are maintainedthroughout the machine life.

Automatic Two Speed Function.Improves machine maneuverabilityaround the job site. Increasedproductivity is achieved by balancinghigh speed travel requirements withcontrollability.

Joystick Mounted Auxiliary and BoomSwing Functions. The new joystick mounted position of these functionsgives fingertip control and a clear cabfloor.

Compact Radius Design. Compact

radius design gives greater machineversatility and the capability to work within confined areas. The radius of theupper body stays within the width of theundercarriage so the operator canconcentrate on the work being donewithout having to worry about the back of the machine.

High Level of Standard ComfortFeatures. Reclining suspension seat,power point, adjustable wrist rests and acup holder are standard features on theCat C CR machines.

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Comfort and Ease of OperationClass leading space and top level feature lead to a comfortable and productiveenvironment.


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Swing Out Rear Door. Provides accessto major components and service points:

Engine oil check and fill

Vertically mounted engine oil filter

Starter motor

Alternator

SOS SM Oil Sampling Valve. Allowseasy sampling of the hydraulic fluid forpreventative maintenance.

500 Hour Oil and Filter Change Period.Reduces operating costs and machinedown time.

Lifting Side Hood. Allows excellentaccess to:

Air filter

Main implement valve

Auxiliary change over valve

Accumulator

Fuel filter

Hydraulic tank Radiator and oil cooler

Front Linkage. Protected front linkagelines are routed above the boom andstick to help reduce damage anddowntime.

End Dampening. End dampening onboth boom and stick cylinders reducesshock loading, increasing componentlife and improving soil retention whenloading at height.

Liner Bearings. Liner bearings in theswing casting deliver longer componentlife and reduced parts replacementcosts.

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Low Operating CostsGood access to main check points and major components makes servicing and maintainingthe 303C CR easier.


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Angle Blade Configuration Increased versatility and productivity are offered with the Cat angle blade

Versatility and Productivity. TheCat C Series machine can be made evenmore productive by ordering the angledozer blade configuration.

Strong and Durable. The Cat hydraulicangle blade is engineered to be strongand durable with a hardened steel wearedge and good protection to cylindersand hydraulic lines.

Angle Blade Positioning. The angleblade can be positioned straight aheador angled up to 25 degrees to the left orright reducing the number of timesrequired to back-up and reposition when

backfilling thus reducing operationtime.

Single Control Lever. All dozerfunctions are controlled from inside thecab, with fully proportional fingertip

control to position the blade at anyangle, from the start to 25 degrees leftor right while travelling in eitherdirection.

Full Pilot Control. Full pilot controlmeans no cables or linkages to wear,keeping as new controllabilitythroughout the machines life andreducing maintenance costs.

Load Sensing Hydraulics, High TractionForce and Auto 2-Speed Travel. Thesefeatures are standard on the Cat C

Series CR machines and ideally suitedfor getting the best out of the anglingblade installation.

Excellent Blade Visibility. The compactradius design of the Cat C Seriesmachines gives excellent visibility tothe blade in any position, allowing theblade to be positioned behind theoperator and away from the frontlinkage for better access when back dragging and finishing in tight areas.

25

25 250250


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Selection. Make detailed comparisonsof the machines under considerationbefore you purchase. Your Cat dealercan give you precise answers to yourquestions, as well as estimatecomponent life, preventive maintenancecost and the true cost of lost production.

Purchase. Look past initial price.Consider the flexible financing optionsavailable, as well as day-to-dayoperating costs. Look at dealer servicesthat can be included in the cost of themachine to yield lower equipmentowning and operating costs over thelong haul. Your Cat dealer can providea package to meet your needs.

Operation. Improving operatingtechniques can boost your profits. YourCat dealer has training literature, video

tapes, classes and other ideas to helpincrease your productivity.

Equipment Maintenance Services.More and more equipment buyers areplanning for effective maintenancebefore buying. Choose from yourdealers wide range of maintenanceservices at the time you purchase yournew machine. Repair option programsguarantee the cost of repairs up front.Services that help optimize machineperformance include:

Customer Support Agreements SOS SM and Coolant Sampling and

Technical Analysis

Maintenance contracts

Scheduled technical inspections

Unmatched Product Support. You willfind nearly all parts at our dealer partscounter. Cat dealers use a world-widecomputer network to find in-stock partsto minimize machine downtime.

Save money with genuine CatRemanufactured parts. You receive thesame warranty and reliability as newproducts at a cost savings of 40-70percent.

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Customer Support Industry-leading customer support is provided by the Cat dealer network.


9/129303C CR Mini Hydraulic Excavatorsspecifications

Hydraulic System

Operating pressures - 245 bar 3,553 psiequipmentOperating pressure - travel 245 bar 3,553 psiOperating pressure - swing 172 bar 2,495 psiAuxiliary circuit - primary 60 L/min 15.85(245 bar, 3553 psi) gal/minAuxiliary circuits - Secondary 27 L/min 7.13 gal/min- at 172 barDigging forces - stick 18.9 kN 4,250 lb(standard)Digging force - stick (long) 16.9 kN 3,799 lbDigging force - bucket 33.0 kN 7,420 lb

Swing System

Machine swing speed 9 RPMBoom swing - left (without 80stop)

Boom swing - left (with stop) 55Swing - right 50

Automatic swing brake, spring applied, hydraulic release

Centralized lubrication

Sound Levels

Canopy 78 dB(A)Cab 78 dB(A)

Operator sound pressure levels measured per ISO 6396(dynamic).

Electrical System

50-amp alternator

12-volt, 650 CCA, 52 amp/h maintenance-free battery

Sealed electrical connectors

Blade

Width 1550 mm 61.0 inHeight 325 mm 12.8 inDig depth 470 mm 18.5 inLift height 400 mm 15.8 in

Blade flotation function provides easier operation

Replaceable, hardened, wear resistant cutting edge

Engine

Model Mitsubishi S3Q2Rated net power (ISO 9249) 22 kW 30 hpGross power 23 kW 31 hp

Net power rating per ISO 9249 and EEC 80/1269

Meets EU Stage II and U.S. EPA Tier 2 emission regulations

Weights

Operating weight with canopy 3435 kg 7,575 lbOperating weight with cab 3555 kg 7,835 lb

Weight with counterweight, rubber tracks, bucket, operator,full fuel and auxiliary lines.

Weight varies depending on machine configuration.

Engine Dimensions

Bore 88 mm 3.46 inStroke 103 mm 4.05 inDisplacement 1.9 L 116 in3

Travel System

Travel speed - high 4.6 km/h 2.8 mphTravel speed - low 2.6 km/h 1.6 mphMax traction force - high 17.7 kN 3,979 lbspeedMax traction force - low speed 33.4 kN 7,508 lbGradeability (max) - high 30

Each track is driven by one independant 2-speed motor

Drive modules are integrated into the roller frame for totalprotection

Straight line travel when tracking and operating the frontlinkage simultaneously

Service Refill Capacities

Cooling system 6 L 1.59 gal

Engine oil 6 L 1.59 galFuel tank 45 L 11.89 galHydraulic tank 37 L 9.77 galHydraulic system 65 L 17.17 gal


10/1210 303C CR Mini Hydraulic Excavatorsspecifications

Standard Stick Long Stick

11 1340 mm 4'5" 1450 mm 4'9"12 2500 mm 8'2" 2500 mm 8'2"13 565 mm 1'10" 565 mm 1'10"14 2220 mm 7'3" 2220 mm 7'3"15 4730 mm 15'6" 4770 mm 15'8"16 770 mm 2'6" 17 660 mm 2'2" 18 300 mm 1'0" 300 mm 1'0"19 1550 mm 5'1" 1550 mm 5'1"

With tracks level on the ground.

Lift Capacities at Ground Level Over Front Over Side Over Front Over SideLift point radius 3000 mm 9'8" 3000 mm 9'8" 4800 mm 15'9" 4800 mm 15'9"

Blade down 1410 kg* 3,109 lb* 480 kg 1,058 lb 620 kg* 1,367 lb* 240 kg 529 lbBlade up 650 kg 1,433 lb 440 kg 970 lb 320 kg 706 lb 210 kg 463 lb

*Limited by hydraulic capacity rather than tipping load.The above loads are in compliance with SAE hydraulic excavator lift capacity rating standard SAE J1097 and they do not exceed 87% of hydraulic lifting capacityor 75% of tipping capacity.The excavator bucket weight is not included on this chart. Lifting capacities for standard stick.

Standard Stick Long Stick

1 2910 mm 9'7" 3200 mm 10'5"2 2400 mm 7'10" 2550 mm 8'4"3 5100 mm 16'9" 5350 mm 17'7"4 5230 mm 17'2" 5470 mm 17'11"5 4950 mm 16'3" 5060 mm 16'7"6 3490 mm 11'5" 3610 mm 11'10"7 2060 mm 6'9" 2180 mm 7'2"8 890 mm 2'11" 890 mm 2'11"9 400 mm 1'4" 400 mm 1'4"

10 470 mm 1'7" 470 mm 1'7"

Track and blade width 1550 mm 5'1"Gauge width 1250 mm 4'1"Shoe width 300 mm 1'0"

Dimensions and Lift Capacities


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Análisis de Miniexcavadora Caterpillar 303C-CR

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