Cov saw yog ib qho tseem ceeb ntawm lub thoob of elevator; nws qhov tshwj xeeb tsis ncaj qha cuam tshuam rau of the elevator txoj kev ua haujlwm zoo, ruaj khov, thiab kev pabcuam lub neej.
Lub thoob of elevator chains feem ntau categorized ua ob hom: phaj chains thiab roller chains. Phaj chains yog tsim los ntawm ntau cov saw hlau txuas nrog cov pins; yam ntxwv los ntawm lawv cov qauv yooj yim, siab load-cov kabmob muaj peev xwm, thiab hnav tsis kam, lawv tau zoo- haum rau hnyav-lub luag haujlwm thiab siab- nrawm nrawm daim ntawv thov. Roller chains, conversely, muaj cov khoom xws li cov phaj sab hauv, sab nrauv, pins, rollers, thiab bushings; muab cov txiaj ntsig zoo xws li kev ua haujlwm du, tsis tshua muaj suab nrov, thiab lub neej ua haujlwm ntev, lawv zoo tagnrho rau lub teeb-rau- nruab nrab-lub luag haujlwm thiab nruab nrab- daim ntawv thov nqa ceev.
