Installation manual

Transducerhandlingandmaintenance

IntroductiontoEmugeself-lockingthreads

Emugeself-lockisatapdesignwithanintegratedlockingfeature.Standardmetricbolts

areused.Theinternalthreadprovidesaself-lockingconnection,whichcanbeused

repeatedly.Itisnotnecessarytoinvolveasecondarylockingdevice(e.g.chemical,

nylonormechanical).TheEmugeself-lockboltswithstandvibrationsbetterthanstandard

(metric)threads,becausethethreadcontactstopsthesidewaysmovement.Thespecial

designoftheinternalthreadprolealsoprovidesamoreevendistributionofthe

tighteningstressoverthewholethreadlength.Theassemblyisjustaseasyaswitha

normal(metric)thread.Thereisnogeneralapplicablestandard(e.g.DINstandard)

fortheEmugeself-lockthread.

Figure18Example,internalandexternalthreads

AEmuge’ ssaw-toothproleuptopitchP≤0.7mm

BEmuge’ssaw-toothproleuptopitchP≥0.7mm

CStandardthread

1Externalthread

2Internalthread

Advantages

•Thethreadlockingfeatureisintegratedintheinternalthread

•Modiedprolewithrampsurfaceinthedirectionofstress

•30degreerampsurfaceprovidesself-lockingeffect

•Easyassembly

•Noassemblyerrors(forgettingthelockingdevice)possible

•Useofstandardexternalthreads(screws)withtoleranceclass“medium”

•Evendistributionofstressoverthewholethreadlength

•Nostrippingofthreads

•Economicallyefcientlockingsystem,noadditionalcomponentsarenecessary

•Undiminishedholdingpowerevenunderdynamicstress

•Repeatedlooseningandre-tighteningwithoutlossoffunction

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