Cov khoom

Ib kab tag nrho ntxiv cylindrical cov menyuam bearings yog ib feem ntawm pawg ntawm radial roller bearings. Cov kabmob no suav nrog cov nplhaib sab nraud, cov nplhaib sab hauv thiab tag nrho cov khoom sib xyaw ua ke. Vim tias tsis muaj lub tawb, cov kabmob tuaj yeem ua kom haum rau qhov loj tshaj plaws ntawm cov khoom dov.