Nyob rau hauv ntau cov chaw xa khoom, cov log synchronous (synchronous pulleys) ua lub luag haujlwm tseem ceeb. Qhov kev xaiv ntawm synchronous cov khoom siv log yog ncaj qha cuam tshuam nrog nws cov kev ua tau zoo, lub neej thiab muaj cov xwm txheej muaj feem xyuam.
Cov khoom siv hlau yog ib qho ntawm cov kev xaiv ntau rau kev tsim cov log tsheb synchronous. Ntawm lawv, txhuas alloy yog nrov heev. Aluminium alloy muaj qhov zoo ntawm lub teeb yuag, uas tuaj yeem txo cov cuab yeej siv hluav taws xob hauv qee lub sijhawm ntawm cov khoom siv hluav taws xob ntau. Nyob rau tib lub sijhawm, nws kuj muaj cov zoo corrosion tsis kam thiab qee lub zog, thiab tuaj yeem hloov kho kom haum rau ib puag ncig ua haujlwm. Cov ntaub ntawv steel kuj tseem muaj, xws li cov hlau carbon hlau, uas muaj lub zog siab thiab muaj peev xwm tiv thaiv loj loj. Nws yog qhov haum rau kev lag luam hnyav, kev sib khuav thiab lwm cov teb uas yuav tsum muaj zog heev ntawm cov log synchronous.
Ntxiv nrog rau cov hlau, Engineering Yas Khoom yog tawm hauv thaj teb ntawm cov log synchronous. Piv txwv li, polyoxymethylene (pom), uas muaj kev nruj zoo heev thiab tawv, hnav tsis kam tiv, thiab kev sib txhuam tsawg. Qhov no ua rau lub log synchronous ua los ntawm cov khoom siv zuaj smoother thiab nrov dua rau kev lag luam uas muaj cov suab nrov thiab kev nyiam ua khoom noj thiab cov cuab yeej siv hluav taws xob. Polytetrafluoroethylene (PTFE) muaj npe nrov rau nws cov tshuaj ruaj khov zoo. Nws tuaj yeem ua haujlwm tau ruaj khov nyob rau hauv ib puag ncig hnyav xws li kub, muaj zog acid thiab alkali, thiab muab cov tshuaj tiv thaiv kom tau txais txiaj ntsig rau cov khoom siv tshwj xeeb.
Thaum xaiv cov khoom ntawm lub log synchronous, nws yog ib qho tseem ceeb tsis yog txiav txim siab nws cov khoom siv neeg, tab sis kuj tseem yuav muab cov ntaub ntawv thov tshwj xeeb thiab cov xwm txheej ua haujlwm. Piv txwv li, hauv kev lag luam siab, qhov sib npaug thiab kev ruaj khov ntawm cov khoom yog tus yuam sij; Hauv kev thaiv huab cua noo lossis corrosive ib puag ncig, corrosion tsis kam yog qhov tseem ceeb heev.
Kev xaiv tsim nyog tuaj yeem txhim kho kev ua tau zoo thiab kev ntseeg tau ntawm cov khoom siv synchronous, thiab muab kev txhawb nqa ruaj khov rau kev tsim khoom zoo ntawm kev lag luam tsim khoom.