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Cov khoom

Cov kabmob cylindrical roller ob kab puv nkaus muaj cov nplhaib sab hauv thiab sab nraud ruaj khov, nrog rau cov khoom dov uas tau coj kom zoo ntawm cov tav. Vim lawv txoj kev tsim tsis muaj cageless, lawv tuaj yeem tuav ntau tus menyuam, uas ua rau muaj qhov ntsuas siab dua. Ntawm qhov tod tes, lawv tso cai rau qhov ceev tshaj plaws tig qis dua li ntawm qhov tsim caged. Muaj nyob rau hauv tsis-locating, semi-locating thiab locating tsim, cov kabmob no sawv cev rau kev daws teeb meem kev siv tshuab hauv ntau qhov chaw thiab daim ntawv thov.