V- siv pulleys txawv ntawm lub sij hawm siv pulleys rau hom siv (V-section) lawv haum nyob rau hauv. GL muaj peev xwm loj ntau lawm ntau yam ntawm V- siv pulley ntawm ntau hom (raws li hom thiab dav ntawm txoj siv sia). prebore uas tuaj yeem machined raws li cov neeg siv khoom xav tau.