Cov khoom
Drawn khob koob rau cov menyuam bearings muaj nyias-walled, kos lub khob sab nraud thiab ib rab koob rau cov menyuam thiab lub tawb sib dhos.Cov khob khob ntawm cov hlau tawv tawv thiab cov koob rau cov menyuam thiab lub tawb sib dhos ntawm cov bearings tsim ib chav tsev tsis sib cais.Drawn khob koob cov menyuam bearings nrog kaw kawg yog siv los kaw qhov kawg ntawm qhov chaw ntawm cov kabmob.