Renold Inc - IRD ASSOCIATION, INC

Renold IncVS.Advantages ofRubber inCompressionCouplings

OverviewRenold Inc. is a global market leading manufacturer and developerof coupling solutions, from Fluid Couplings to Rubber-InCompression and Gear Couplings.

Westfield,NY Established Reputation &ExperienceVast Array of Design FeaturesMultiple Coupling ConfigurationsParametric Design CapabilityContinued Design DevelopmentIn-House Type-TestingSignificant ManufacturingCapacityBest-in-Class Quality – ISO 9001World-Wide Sales & ServiceCEO Excellence Award Winner2018

GearCouplingsStandard Gear CouplingRenold Ajax carries a full line of standard gear couplings that conforms to the AGMA gearcoupling specification number.They are offered in o-ring or metal seal designs, and include quality features such as fittedbolts, crowned and barreled teeth with tooth tip piloting, and forged steel components.The Renold Ajax metal seal design coupling uses a unique method of seal retention that willnot allow the seal to separate from the ring gear during operation. This seal design alsoallows a metal seal ring gear to easily be converted to an o-ring seal configuration and backto metal seal if needed.Renold Ajax standard couplings also include a line of D- and DS-Series high misalignmentcouplings that are capable of operation at up to 6 degrees misalignment. The D-Seriescouplings use a piloted flange for connection while the DS-Series couplings have a detachablesleeve for connection in applications with a diameter restriction such as levelers.

ApplicationsMotor to GearboxesMain Motor DrivesPump DrivesCrane DrivesRunout Tables

Torque & MisalignmentMajor Diameter Sleeve PilotingBacklashCrown Gearing

Why CrownedGear TeethReduce BacklashEliminate End LoadingLower Contact Stresses

O-RingSealHalf for Half InterchangeabilityForged 1045 Steel ConstructionSizes 1-7 Half for Half AmeridrivesFalkKopflexLovejoy/Sierbath

O-RingSeal20 Pressure Angle Tooth FormTooth Tip PilotingAssembly Lead-In ChamferInduction Hardened Case AvailableLong Internal ToothCNC Drilled Hole Pattern

Maintenance

Hi TecZero maintenanceIntrinsically fail safeMisalignment capability of 1/2 Torsional tuning and vibration dampingHigh temperature capabilityHigh technical supportExceedingly long lifeNon Lubricated

Typical ApplicationsSteel ManufacturingRubber Processing and Plastics IndustryPulp and Paper IndustryMaterial HandlingCranes & HoistsMiningPower GenerationMarine Propulsion

Construction

FeaturesExtends Equipment Life By Absorbs Torque Spikes from High Impact Loads Dampens Vibrations Reducing Peak Stresses in Shafts, Bearings & Gearing Reduces number of fatigue cyclesMotor Shaft Stress During Short Circuit EventShaft Stress (MPa)Shock Events Include Startup Shutdown Short Circuit100806040200-20-40-60-80-100PM CplgRigid Cplg00.20.40.6Time (seconds)0.81

FeaturesExtends Equipment Life by:Low Torsional Stiffness Torsionally “soft” Transmits less motor vibration Isolates motor from fan12.010.0Vibratory Stress (MPa) Protects shafting from torsionalvibration stress duringoperation Reduced vibration in thedrivetrain8.0PM Cplg4.0“Tune” The Drive2.0 Select rubber grade tominimize vibration Minimizes damage to drivetraincomponentsRigid Cplg6.0Rubber Dampening Reduces vibration energyMaximum Motor Shaft Stress14.00.00200400600Speed (rpm)8001000

FeaturesIntrinsically Fail SafeEnsures continuous operation ofthe drivelineReduced Downtime

FeaturesShock Load ProtectionAbsorbs high torque impulse loadsMinimises damage to the drivetrain

FeaturesZero BacklashReduces torque amplification factorsAvoids damage to the drivetrain

FeaturesMisalignment CapabilityAllows axial and radial misalignment between the driving anddriven machinesReduced loads on driving and driven componentsAllows for thermal expansionLow radial and axial stiffness, reducing bearing loads

Features SummaryHigh torque densityIntrinsically fail safeVibration dampingMaintenance freeShock load protectionMisalignment capabilityZero backlashCOST SAVINGSResulting in the lowestlifetime costs

Coupling ComparisonCoupling brane/DiscPin & BushHigh TorqueDensityCostEffectiveFail SafeMaintenanceFreeShock LoadProtectionMisalignmentCapabilityBacklashFree

TVAServiceOur resident torsional analysts are able toprovide a full Torsional Vibration Analysisservice to investigate a customer’sdriveline and report on the systemperformance. This service, together withthe facility for transient analysis, isavailable to anyone and is not subject topurchase of Renold Hi-Tec product.

MaintenanceMaintenance FreeNo lubrication or adjustment requiredNo downtime for maintenanceReduced operator requirementsNo failures of drivetrain due to lack ofcoupling maintenance

SafetyIssued: February 2015Ref: REH/1028Couplings for safety-critical applicationsRubber-in-compression couplings, from Renold Hi-Tec, provide fail-safe operationon applications such as mine winders, hoists, draw-works on drilling rigs andindustrial overhead cranes. The intrinsically fail-safe construction of thecouplings protects both people and plant on safety critical applications from thepotentially catastrophic consequences of coupling failure that could result in thesudden loss of drive and the load being dropped.Rubber-in-compression couplings are comprised of two round metal sectionsfitting one inside the other with what looks like the paddles of a paddle steamerprojecting inwards from the outer section and outwards from the inner. Rubberblocks are placed in the spaces in-between the paddles, and, as the outersection is turned by the motor, it drives the inner section through the rubberblocks.There are no wearing components in a rubber in compression coupling as thereare in gear or other types of metallic coupling. As the rubber blocks are totallyencased in metal they can only change shape during operation and will not wearor fail, thus ensuring that the drive is always maintained. This is particularlyimportant on safety-critical applications such as mine winders carrying peopleand ladle cranes in the steel industry where molten metal is being lifted andmoved.Rubber-in-compression couplings are also maintenance free and offer the lowestlifetime operating costs over other coupling types. They are backlash free andprotect plant and equipment from otherwise damaging vibration, shock loadingand torque amplification, lengthening its life and reducing maintenance.

TypesHTBDCB - GSMSCVFPMRBRBI

Questions?

Renold Ajax carries a full line of standard gear couplings that conforms to the AGMA gear coupling specification number. They are offered in o-ring or metal seal designs, and include quality features such as fitted bolts, crowned and barreled teeth