RM500Rotary Mixer

Operating Weight (with ROPS, Cab and Universal rotor)28 145 kg 62,060 lb

Cat® C15 Engine with ACERT™ TechnologyGross Power (SAE J1995) 403 kW 540 hp

Rotor Width 2438 mm 96"Rotor Depth (maximum) 508 mm 20"

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Productivity, Serviceability and Comfort in a Durable PackageThe new RM500 offers enhanced production capabilities, optimized performance, simplifiedservice and exceptional operator comfort.

C15 Engine with ACERT™ TechnologyACERT Technology works at the pointof combustion to optimize engineperformance and provide low exhaustemissions. The C15 engine withACERT Technology provides cleanburning power. Electronicallycontrolled on-demand variable speedcooling fan provides the lowest overallnoise levels and high ambient operationcapability.Page 4

Operator’s StationErgonomic design emphasizes comfort, visibility and easy operation. Isolatedoperator’s station with heavy-duty rubber mounts reduce machine vibrationtransmitted to the operator. The hydraulically assisted platform slides side-to-side toan infinite number of positions. A switch on the side console allows the operator toselect any desired position for good visibility and comfort.

The fully adjustable steering column and rotating seat are positioned to provide anoptimal operating position. Machine controls are grouped and conveniently locatedto enhance operator productivity and reduce fatigue. Page 5

Performance and reliability you expect.The RM500 combines superior performance and reliability to achieve themost demanding job specifications while maximizing machine uptime. With many enhanced features and options, the RM500 is designed to workwell in both full depth reclamation and soil stabilization applications.

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Dual Propel PumpsThe dual pump propel system providesseparate balanced hydraulic flow toboth the rear drive motors and the frontdrive motors to propel the machine withfull-time all-wheel drive. This systemenables the operator to achieve superiortractive effort for soil stabilizationapplications that require maximumcutting depth and that are also high inmoisture content.Page 7

Rotor DriveA Caterpillar® powershift transmissiondrives the rotor and provides three rotorspeeds for maximum performance in avariety of materials and cutting depths.Heavy-duty shear disc or optionaltorque limiter protects rotor drivecomponents from torsional stress andshock loads.Page 8

CabThe optional cab increases machineutilization, provides greater year-roundcomfort and offers reduced interiorsound levels. The pressurized cab slidesside-to-side and includes a rotatingcloth seat, left and right side doors,tinted windows, front and rearwindshield wipers, heater/defroster andair conditioning. Sound absorbing floormat reduces sound and machinevibration transmitted to the operator.Page 6 Mixing Chamber

Mixing chamber allows the rotor tomove independently so that the capacityof the chamber actually increases indeeper cuts to allow better materialmixing and excellent gradation.Machine weight is well distributed toprovide stability in the cut for uniformdepth control.Page 9

ServiceabilityThe one-piece fiberglass hood tiltsforward for exceptional access to theengine and cooling system. Dailyservice points are accessible fromground level and are grouped on oneside of the engine. Hinged ground levelside panels allow total engine access.Hinged service doors open wide foraccess to power train and rotor drivecomponents. The rotor hood tiltsforward to allow access to the rotor andcutting tools. Ground level side accessdoors on the rotor hood provideconvenient access for easy cutting toolremoval and replacement. Page 11

Rotor OptionsWith a choice of three rotor options, theRM500 can be configured for differentapplications and depth specifications.The universal rotor is intendedprimarily to pulverize asphalt layers.The soil rotor is intended primarily forsoil stabilization. The combination rotoris intended primarily for use in soilstabilization with secondary applicationin light cuts of asphalt reclamation.Page 10

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C15 Engine with ACERT™ TechnologyA combination of innovations working at the point of combustion, ACERT Technologyoptimizes engine performance while meeting U.S. EPA Tier 3 and European EU Stage IIIaemission regulations for off-road applications.

Cat® C15 Engine with ACERT Technology The C15 engine provides a full-ratedgross power (SAE J1995) of 403 kW(540 hp) at 2000 rpm with a torque of2356 Nm (1738 lb/ft). The combinationof large displacement and high torqueallow the RM500 to propel through thetoughest materials.

Mechanically Actuated ElectronicallyControlled Unit Injection (MEUI)The MEUI fuel system is a uniquesystem that combines the technicaladvancement of an electronic controlsystem with the simplicity of directmechanically controlled unit fuelinjection. The MEUI system excels inits ability to control injection pressureover the entire engine operating speedrange. These features allow the C15 tohave complete control over injectiontiming, duration and pressure.

Multiple Injection Fuel DeliveryMultiple injection fuel delivery involvesa high degree of precision. Preciselyshaping the combustion cycle lowerscombustion chamber temperatures,which generates fewer emissions andoptimizes fuel combustion, translatinginto more work output for your fuelcost.

C15 Cylinder BlockThe cylinder block is a one-piece, greyiron block that features generous ribbingfor stiffness and heavy bearingbulkheads for rigidity and strength asthe crankshaft turns. This new designsupports the engine’s highercompression ratios and increases itspower density. The incorporation ofstraight-thread, o-ring connection pointsreduces the loss of engine oil and fluids.

High Cylinder PressuresHigh cylinder pressures combined withtightly controlled tolerances promoteextremely efficient fuel burn, less blowby and lower emissions.

Service, Maintenance and RepairEasier service, maintenance and repair isaccomplished by monitoring keyfunctions and logging critical indicators.Advanced electronic diagnosticcapabilities are possible using CatElectronic Technician.

Turbocharged and Air-to-AirAftercooling (ATAAC)The turbocharged air-to-air aftercoolingsystem provides high horsepower withincreased response time while keepingexhaust temperatures low for longhours of continuous operation.

Air-to-Air AftercoolingAir-to-air aftercooling keeps air intaketemperatures down and in concert withthe tight tolerance combustion chambercomponents, maximizes fuel efficiencyand minimizes emissions. Newturbocharger, unique cross-flow head,single, front driven, overhead cam anda more efficient intake manifoldgenerate significant improvements inair flow. This generates significantimprovements in efficiency and reducedemissions.

ADEM™ A4 electronic Control ModuleThe ADEM A4 electronic controlmodule manages fuel delivery, valvetiming and airflow to get the mostperformance per gallon (liter) of fuelused. The control module providesflexible fuel mapping, allowing theengine to respond quickly to varyingapplication needs. It keeps track ofengine and machine conditions whilekeeping the engine operating at peakefficiency.

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Operator’s StationErgonomic design emphasizes operator comfort, visibility and easy operation. The platformslides side-to-side to increase versatility and productivity while reducing operator fatigue.

Hydraulically assisted sliding platformallows the operator to position theplatform to any desired position toprovide good visibility to both sides ofthe machine. Platform can be accessedfrom either side of the machine.

Comfortable and durable seat hasadjustable fore/aft positioning, bottomcushion height, suspension stiffness andflip-up arm rests. Seat and side controlconsole rotates to seven positions toenhance operator comfort.

Controls are conveniently located foreasy one-handed control while seated.Propel lever with center detent allowsforward/reverse operation and variablemachine speed.

Adjustable steering column offerstelescoping and tilt features to provide acomfortable operating position for theoperator.

Operational ControlsAll machine controls, switches and gauges are positioned to minimize operator fatigue andmaximize productivity.

Clear instrumentation includes gaugesfor engine oil pressure, engine coolanttemperature, rotor drive transmission oiltemperature, hydraulic oil temperature,charging system voltage and fuel level.

Large analog gauges display propelground speed, engine rpm, engine hourmeter and fault codes.

Electronic Monitoring Systemconstantly monitors input signals fromsensors and switches in variousmachine systems and alerts the operatorif a problem does occur.

Load control selection switch tocontrol propel speed manually orautomatically by the ECM.

Automatic steering control providesfour steering modes for maneuvering intight quarters: front steer only, crabsteer, coordinated steer and rear steeronly.

The side console features a padded armrest, the four mode steering switch,speed control dial, propel lever, rotorelevation, front and rear rotor hooddoor switches, rear steering switch andsliding operator’s station switch.

1 Electronic Monitoring System2 Ground Speed Indicator3 Engine Tachometer4 Park Brake Switch

5 Propel Speed Selector Switch6 Load Control Selection Switch7 Rotor ON/OFF Switch8 Engine Speed Switch

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Cab OptionOptional cab can increase machine utilization and provides greater year-round comfort inextreme environment conditions. The cab is fully pressurized and includes air conditioning.

Iso-mounted cab is pressurized to keepnoise, dust and the elements out andcomfort in.

Items included with cab are: rotatingcloth seat, left and right side lockabledoors, tinted glass, air conditioning,heater/defroster, dual front and rearwindshield wipers and sound absorbingfloor mat.

Additional operator comforts includetwo cup holders and a 12-volt powerreceptacle. The cab is also radio-readyand includes a power converter, antennawith cable, two speakers and aheadliner location for mounting radio.

The cab offers an exceptional viewingarea to the front tire edge, mixingchamber and to the rear wheels.

The following features further enhanceoperator comfort:

1) Heating/air conditioning controls.

2) Left and right access doors.

3) Rotating cloth seat.

4) Sound absorbing headliner.

5) Tinted glass.

6) Windshield wipers.

7) Cushioned floor mat.

8) Dual front mounted speakers.

9) Radio-ready mount.

10) Heavy-duty isolation mounts.

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Electronic Control ModulesReliable field-proven technology makes machine operation simple and self-diagnosticssimplifies troubleshooting.

Reliable field-proven technologyprovides maximum productivity andsimplifies troubleshooting.

Electronic Control Modules (ECM)receives input signals from sensors inthe engine, propel, steering and rotordrive systems which monitor currentoperating conditions.

Self-diagnostics provides informationfor troubleshooting and alerts theoperator about potential systemproblems.

Automatic load control adjusts propelspeed so that engine speed does notdrop below 1900 rpm. Machine alwaysworks at peak efficiency for maximumoutput.

Automatic rotor depth control providesconsistent quality and performance.

Dual Pump Propel SystemHydrostatic drive provides balanced full-time tractive effort to each drive motor.

Dual propel pumps provide separate,balanced flow to the front drive motorsand rear drive motors. Provides superiortractive effort in soft underfootconditions.

Load sensing system controlled by theECM, matches propel speed to load onthe engine.

Two speed ranges allow the machine tooperate at either maximum torque topropel the machine through thetoughest conditions, or a faster speedfor moving around the job site.

Infinitely variable machine speedsdetermined by the propel lever andspeed control dial.

Dual flow divider control valvesprovide equal traction to the front andrear drive motors independently topropel the machine with true four wheeldrive.

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1 Caterpillar C15 Engine2 Electronic Control Modules3 Front Wheel Propel Pump4 Front Flow Divider Control Valve5 Front Wheel Drive Motor6 Rear Wheel Propel Pump7 Rear Flow Divider Control Valve8 Rear Wheel Drive Motor

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Rotor DriveMaximum production with high reliability. A Caterpillar powershift transmission providesthree rotor speeds for maximum performance in a variety of materials and cutting depths.

A Cat powershift transmission drivesthe rotor and is sized to handle toughcutting and deep mixing.

Heavy-duty gear reducers with fourplanetary carriers provide excellentrotor drive reliability.

Rugged drive chains provide efficient,continuous power to the rotor. Singlestrand heavy-duty chain resistsbreakage.

Three rotor speeds for maximumperformance in a variety of materialsand cutting depths. First speed is usedprimarily for pulverizing the material.Second and third rotor speeds can beused as blending or mixing passes.

High capacity rotor driveshafts andmaintenance-free universal joints.

Heavy-duty shear disc or optionaltorque limiter protects rotor drivecomponents from torsional stress andshocks loads.

All-Wheel DriveA separate hydraulic pump provides hydraulic flow to large displacement motors on eachrear wheel. The system is designed to propel the machine with full-time all-wheel drive.

Dual propel pump system: one pump isdedicated to drive the front wheels,while the second propel pump isdedicated to drive the rear wheels.

Increased tractive effort for those toughsoil or reclamation jobs.

A separate flow divider control valvedirects hydraulic flow to each rearwheel to provide balanced tractiveeffort in slippery conditions.

High torque drive motors andplanetaries on rear wheels makes this a true four-wheel drive machine.

Large rear tires with an aggressivetread and large footprint propels themachine easily in the most severeapplications.

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Mixing ChamberMixing chamber is a heavy-duty hood with large volume to handle deep mixing. Ensuresdepth control, proper sizing and thorough blending of reclaimed materials.

Mixing chamber allows the rotor tomove independently so that the capacityof the chamber actually increases indeeper cuts to allow better materialmixing.

Mid-machine rotor uses total machineweight to help keep rotor steady in thecut for uniform depth control.

Bi-directional mixing capabilityincreases machine efficiency.

Large heavy-duty breaker bars helpachieve uniform sizing.

Hydraulically adjustable rear door foroptimum control of gradation andmaterial uniformity.

Hydraulically adjustable front doorallows more precise sizing controlwhen operating in the reverse direction.

Side access doors enable quick andsimple replacement of cutting tools onrotor ends.

Hydraulic Front DoorHeavy-duty front door is ideal for peak efficiency on soil stabilization, bio-remediation ormixing passes on asphalt reclamation.

Hydraulically operated front doorallows the operator to control theopening of the front door from theoperator’s station.

Dual hydraulic cylinders offer increasedlifting force and precise control of thefront door.

The front door raises parallel to thecutting surface to prevent the door fromplowing material in harsh soilstabilization conditions.

Forward or reverse operation increasesmachine versatility in soil stabilization.

Visual site gauge on rotor hooddisplays door position and allows theoperator to precisely control theopening of the front door.

MachineTravel

RotorMovement

ReclaimedMaterial

Asphalt

Base

1 Fully Adjustable Rear Door2 Universal Rotor (shown)3 Breaker Bars (if equipped)4 Fully Adjustable Front Door

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Rotor SelectionChoice of three rotor designs for different applications and depth specifications. Tools aremounted in drive-in, knock-out holders for quick and easy replacement.

Soil RotorDesigned primarily for use in soil stabilization.

238 point-attack carbide-tipped tools are mountedin drive-in, knock-out weld-on tool holders andarranged in a chevron pattern for maximumbreakout force.

Versatile applications – blends additives withcohesive, semi-cohesive or granular materials.

Replaceable end rings protect rotor mandrel fromwear. Rings are hard-faced for extended service.

Maximum depth is 508 mm (20").

Universal RotorDesigned primarily for use in asphalt reclamation.

200 point-attack carbide-tipped tools are mountedin drive-in, knock-out bolt-on tool holders andarranged in a chevron pattern for maximumbreakout force.

Breakaway design tool holders allow for fastreplacement without welding.

Kicker paddles placed on every stand-offimproves mixing in soil stabilization and providesmore efficient material movement in full depthreclamation.

Triple-tree tool placement on rotor ends cleans uploose material and reduces wear on drum whenmaneuvering in the cut.

Maximum depth is 406 mm (16").

Combination RotorDesigned primarily for use in soil stabilizationwith a secondary application in light cuts ofasphalt reclamation.

114 point-attack carbide-tipped tools are mountedin drive-in, knock-out bolt-on breakaway toolholders and arranged in a chevron pattern formaximum breakout force.

Versatile applications – intended for applicationswhere material gradation is of less importanceand where higher working speeds are desired.

Replaceable end rings protect rotor mandrel fromwear. Rings are hard-faced for extended service.

Maximum depth is 508 mm (20").

Triple-tree tool placement.

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ServiceabilityLess time on maintenance means more time on the job.

Hydraulic rotor hood tilt rotates hoodforward for convenient access to rotorfor inspection and tool maintenance.

Hinged service doors open wide onsides of engine, rotor hood and on topdeck for access to power train and rotordrive components.

Self-lubricating rotor drive chains insealed chain cases partially filled withoil.

Electronic Control Module (ECM)monitors machine systems and providesself-diagnostics for operator or servicepersonnel.

Three warning levels alert operator toconditions on the machine that requireattention. Encourages repair beforemajor failure.Level One – a flashing gauge indicatorand a flashing alert indicator light.Level Two – level one warning plus thewarning action lamp flashing.Level Three – level two warning plusthe warning action horn sounds.

Visual indicators allow easy check ofengine coolant, hydraulic oil level, rotorbearing reservoir and air restrictionindicator.

Quick-connect hydraulic test portssimplify system diagnostics.

Ecology drains provide anenvironmental method to drain fluids.They are included on the radiator,engine oil pan, hydraulic and fuel tank.

S•O•SSM ports allow for simple fluidcollection of engine oil, engine coolantand hydraulic oil.

Secure hose routing with polyethylenerouting blocks to reduce rubbing andincrease service life.

Nylon braided wrap and all-weatherconnectors ensure electrical systemintegrity. Electrical wiring is color-coded, numbered and labeled withcomponent identifiers to simplifytroubleshooting.

Maintenance-free Caterpillar batteriesare mounted on the side of the machineand are accessible from ground level.Cat batteries are specifically designedfor maximum cranking power andprotection against vibration.

Machine is Product Link wire-ready.The Caterpillar Product Link System(CPLS) ensures maximum uptime andminimum repair costs by simplifyingtracking of equipment fleets. Providesautomatic machine location and hourupdates. Can be obtained through yourlocal Caterpillar dealer.

The one-piece fiberglass hood tiltsforward for exceptional access to theengine and cooling package. Dailyservice points are accessible fromground level and are grouped on oneside of the engine. Lower side panelsopen wide for even greater access.

Cooling package is single plane designfor easy access during cleaning andservice. A modular, stacked coolingsystem provides more efficient coolingof individual systems and makesreplacement and routine cleaning easier.Electronically controlled on-demandvariable speed cooling fan provides thelowest overall noise levels and highambient operation capability.

12 RM500 specifications

Operating DimensionsA Overall length 9.68 m 31' 8"B Overall machine width 2.98 m 9' 7"C Width at rear wheels 2.82 m 9' 2"D Rotor hood width 2.53 m 8' 3"E Height at ROPS 3.48 m 11' 4"F Height at cab (if equipped) 3.39 m 11' 1"G Height at handrail 3.36 m 11'H Wheelbase 6.25 m 20' 5"I Ground clearance 530 mm 20.8"

Inside turning radius 3.7 m 12' 1"

RM500

Operating WeightsWeights shown are approximate and include coolant, lubricants, 50% fuel level anda 75 kg (165 lb) operator.

Machine Weights with open platformwith universal rotor 27 165 kg 59,900 lbwith soil rotor 26 940 kg 59,400 lbwith combination rotor 26 170 kg 57,700 lb

Optional Configurations (add to above figures)ROPS 512 kg 1130 lbFOPS 213 kg 470 lbCab 468 kg 1030 lb

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Rotor OptionsThree rotor styles are available. All mount to the standard mixing chamber. Breaker bars are included with the universal rotor.

Rotor Width Diameter Tools Max. DepthUniversal 2438 mm (96") 1375 mm (54") 200 406 mm (16")Soil 2438 mm (96") 1625 mm (64") 238 508 mm (20")Combination 2438 mm (96") 1625 mm (64") 114 508 mm (20")

Service Refill CapacitiesLiters Gallons

Fuel tank (useable) 1056 279Cooling system 81 21.4Engine oil w/filter 34 8.9Propel planetary gear reducer (each)Front 5 1.3Rear 4 1Hydraulic tank 233 61.5Rotor drive axle 17 4.5Rotor bearing reservoir 12 3.2Chain case (each) 25.6 6.8Rotor drive planetarygear reducer (each) 3.8 1Rotor transmission 12.4 3.25

EngineThe Caterpillar® C15 engine withACERT™ Technology is a six cylinder,turbocharged air-to-air after-cooleddiesel engine. The engine meets U.S.EPA Tier 3 and European EU Stage IIIaengine emission regulations.

Engine Cat® C15Gross Power kW hp

SAE J1995 403 540Net Power kW hp

ISO 9249 403 540EEC 80/1269 403 540SAE J1349 399 535

SpecificationsBore 137 mm 5.4"Stroke 171 mm 6.7"Displacement 15.1 liters 923 in3

■ The power ratings apply at a ratedspeed of 2000 RPM when testedunder the reference conditions for thespecific standard.

■ The net power advertised is thepower available at the flywheel whenthe engine is equipped with analternator, air cleaner, muffler and fanat minimum speed.

■ The net power at the flywheel whenthe fan is at maximum speed is 379kW (508 hp) per the SAE J1349reference standards.

■ The engine provides a torque of 2356 Nm (1738 lb/ft).

■ Derating is not required up to analtitude of 1067 m (3500').

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13RM500 specifications

Propel SystemAll-wheel drive is standard to providefull-time four-wheel drive for increasedtractive effort.

Features

■ Front wheels are hydrostaticallydriven by two dual displacementpiston-type motors. A separatevariable displacement, piston-typepump with electronic displacementcontrol supplies pressurized flow.Planetary gear reduction on eachfront wheel end.

■ Rear wheels are hydrostaticallydriven by two dual displacementpiston-type motors. A separatevariable displacement, piston-typepump with electronic displacementcontrol supplies pressurized flow.Planetary gear reduction on each rearwheel end.

■ Drive motors have two swashplatepositions allowing operation at eithermaximum torque for work or greaterspeed for moving around the job site.

■ Gear selection controlled electricallyby a two-position switch on theoperator’s console.

■ Infinitely variable machine speed anddirection of travel controlled bypropel lever.

■ Speed control dial allows the operatorto set the maximum working speed sothat when the propel lever is placed inthe full forward position, the machinewill return to the pre-set speed.

■ Load sensing system, controlled byElectronic Control Module (ECM),matches propel speed to load on theengine.

■ Each propel system includes aseparate flow divider control valve toprovide equal traction to each drivemotor. Operator can activate by aswitch on the front control console.

Max. speeds (forward and reverse):

Working 3.2 km/h - 2.0 mphRoading 9.2 km/h - 5.7 mph

Rotor Drive SystemOperates direct through a Caterpillarthree-speed, powershift transmission.

Features

■ Choice of three rotor speeds permitsworking in a wide range of materials,depths and applications.

■ Three-position switch determinesrotor speed. Speed selection can bechanged during operation.

■ ON/OFF switch controls clutch packengagement in transmission. Disc-type brake on rotor driveline activateswhen switch is in the OFF position.

■ Single strand, high strength rotordrive chains on both sides arecontained in heavy-duty chain casespartially filled with oil.

■ Shear disc or optional torque limiterprotect rotor drive components.

Rotor Speeds (@ 2000 engine rpm):

First 110 rpmSecond 152 rpmThird 205 rpm

Rotor Depth ControlRotor height and depth is electronicover hydraulic control. ECM controlstwo double-acting hydraulic cylinderson sides of mixing chamber. Actualrotor height and depth are displayed onthe electronic control panel.

Features

■ Three-position mode switch allowsrotor depth to be controlled manually orautomatically.

■ MANUAL mode controls depth usingthe raise/lower switch. Visual depthgauges are easily seen fromoperator’s station.

■ AUTOMATIC mode automaticallycontrols rotor depth to a preset cuttingdepth. Setting cutting depth is easilyaccomplished first in manual mode bya switch on the operator’s console.

■ TRAVEL mode selection automaticallyraises rotor and hood to a preset travelheight.

BrakesPrimary Brake Features

■ Closed-loop hydrostatic driveprovides dynamic braking duringnormal operation.

Parking Brake Features

■ Spring-applied/hydraulically releasedmultiple disc type brake mounted oneach gear reducer. Secondary brakesare activated by a button on theoperator’s console, loss of hydraulicpressure in the brake circuit or whenthe engine is shut down.

■ Propel pumps are destroked whenparking brake is engaged. Propellever must be returned to neutral afterbrake is released before machine willpropel.

SteeringA hydraulic power-assist, steeringsystem provides four steering modes:front steer only, crab steer, coordinatedand rear steer only.

Features

■ Two double-acting steering cylinderscontrol the front wheels and arepowered by a pressure-compensated,piston-type pump. Two double-actingsteering cylinder are attached to therear bolster. Constant pressure isassured in the steering system.

■ Switch on operator’s side consoleprovides rear wheel steering mode.

Steering Modes

■ Front steer only—controlled by ahand metering unit, maintained byclosed-loop control. The ECMautomatically aligns rear wheels to thecenter position for straight tracking.

■ Rear steer—controlled by a toggleswitch, maintained by closed-loopcontrol.

■ Crab—front and rear wheels turnsimultaneously in the same direction.

■ Coordinated—front and rear wheelsturn simultaneously in the oppositedirection.

■ Switch on operator’s side consoleprovides four steering modes.

Turning Radius (minimum):

Inside 3.7 m (12' 1")

14 RM500 specifications

Roll Over Protective Structure (ROPS)is a two-post structure that bolts directlyonto flanges welded to the mainframe.The structure meets ISO 3471. Thestructure can be field installed.

Falling Object Protective Structure(FOPS) that bolts directly to the ROPSwhich provides Level 1 protection andalso serves as a sun canopy. Thestructure meets ISO 3449. The structurecan be field installed.

Sliding Cab includes a rotating clothseat, sound absorbing headliner, left andright side lockable doors, tinted glass,air conditioning, heater/defroster, dualfront and rear windshield wipers andrubber floor mat. The cab is also radio-ready and includes a power converter,antenna with cable, two speakers and aheadliner location for mounting.

Roading Light Package includes twofront-facing headlights, two amberrunning lamps, four amber turnsignal/hazard lamps and a slow movingvehicle sign. Light package used forhighway transport purposes only.

Warning Beacon Light includes anamber rotating beacon mounted on aretractable pole and mount.

Friction Torque Limiter protects rotordrive train from high torque loads in theevent the rotor strikes an immovableobject. The limiter slips momentarilywithout interrupting machine operation.

Mirror Package includes twoadjustable mirrors mounted on bothsides of the machine for good visibilityto the rear and along the sides of themachine.

Umbrella provides sun and rainprotection for the operator and includesa support shaft and mounting hardware.Only for use on open platform machineswithout ROPS or cab.

Water Spray System accurately addswater to processed material. Systemincludes a operator interface panel,hydraulic filter, EDC controlledhydraulic pump, a 379 - 1895 liters (100 - 500 U.S. gallons) per minutevane-type centrifugal pump, in-line flowmeter, spray bar with nozzles andhydraulically operated single valvespray bar shut-off.

Universal Rotor is designed for use inasphalt reclamation and featuresbreakaway bolt-on tool holders.Maximum cutting depth is 406 mm (16").

Soil Rotor is designed for use in soilstabilization and features weld-on toolholders. Maximum cutting depth is 508 mm (20").

Combination Rotor is designedprimarily for use in soil stabilizationwith secondary application in light cutsof asphalt reclamation and featuresbreakaway bolt-on tool holders.Maximum cutting depth is 508 mm (20").

Counterweight Kit is a bolt-on weightkit that attaches to the rear of themachine. The kit is recommended whenoperating in tough reclamation jobsexceeding 25 cm (10") of asphalt.

Optional EquipmentNote: Some options listed may be an option in some areas and standard in others. Consult your dealer for specifics.

TiresFront26.5" x 25" 20-ply lug-type R-1345 kPa (50 psi)

Rear23.1" x 26" 16-ply lug-type R-1241 kPa (35 psi)

ElectricalThe 24-volt electrical system consistsof two maintenance-free Cat batteries.Electrical wiring is color-coded,numbered, wrapped in vinyl-coatednylon braid and labeled withcomponent identifiers. The startingsystem provides 1365 cold crankingamps (cca). The system includes a 95-amp alternator.

FrameFabricated from heavy gauge steelplates and structural steel tubing. Framejoined to rear bolster with welded-intrunion and spherical plain bearings toallow rear bolster oscillation of 15º.

15RM500 specifications

RM500 SpecificationsOperating Weight (with ROPS, cab and universal rotor)Machine 28 145 kg 62,060 lbat front 18 295 kg 40,340 lbat rear 9850 kg 21,720 lbRatio (front/rear) 65/35

Machine DimensionsOverall length 9.68 m (31' 8")Overall width 2.98 m (9' 7")Overall height at ROPS 3.48 m (11' 4")Wheelbase 6.25 m (20' 5")Ground clearance 530 mm (20.8")Inside turning radius 3.7 m (12' 1")

Power TrainEngine C15 with ACERT™ TechnologyGross power (SAE J1995) 403 kW 540 hpSpeeds

Working 3.2 km/h 2.0 mphRoading 9.2 km/h 5.7 mph

Drive train (propel) Hydrostatic w/planetaryTire size (front) 26.5" x 25"Tire size (rear) 23.1" x 26"

Rotor Drive SystemRotor drive ChainTransmission MechanicalClutch HydraulicSpeeds

First 110 rpmSecond 152 rpmThird 205 rpm

RotorCutting width 2438 mm (96")Cutting depth

Universal 406 mm (16")Soil 508 mm (20")Combination 508 mm (20")

Drum diameterUniversal 1375 mm (54")Soil 1625 mm (64")Combination 1625 mm (64")

Number of toolsUniversal 200Soil 238Combination 114

Tool spacing (tip)Universal 15.9 mm (0.63")Soil 11.5 mm (0.45")Combination 32 mm (1.25")

MiscellaneousOscillation angle (rear bolster) ± 15°Fuel capacity 1056 liters 279 gal

Optional Equipment• Sliding Cab • Friction Torque Limiter • Umbrella • Mirror Package• Roll Over Protective Structure • Universal Rotor • Combination Rotor • Soil Rotor• Falling Object Protective Structure • Water Spray System • Roading Light Package • Counterweight Kit• Warning Beacon Light

QEHQ1204-01 (07/07)

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All Rights Reserved.

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Featured machines in photography may include optional equipment.

Materials and specifications are subject to change without notice.

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and product identity used herein, are trademarks of Caterpillar and may not be used without permission.

RM300

Operating Weight (with ROPS, cab and universal rotor)Machine 24 454 kg 53,911 lbGross Power (SAE J1995) 261 kW 350 hpRotor Width 2438 mm 96"Cutting Depth

Universal Rotor 457 mm 18"Soil Rotor 508 mm 20"Combination Rotor 508 mm 20"

Propel SpeedsWorking 4.3 km/h 2.7 mphRoading 9.7 km/h 6.0 mph

Caterpillar offers a comprehensive line of rotary mixers.Caterpillar rotary mixers are designed to have the best productivity, reliability, versatility,visibility and operator comfort in their class.Contact your local Caterpillar dealer to learn more about the complete line of Caterpillar Paving Products.