Bearings yog qhov tseem ceeb ntawm kev siv lub tshuab niaj hnub no thiab khoom siv. Nws lub luag haujlwm tseem ceeb yog txhawb cov neeg kho tshuab tig lub cev, txo qhov sib txhuam coefficient thaum nws txav, thiab paub meej tias nws qhov kev hloov raug.
Cim npe nrov: bearings rau lub tshuab roj hmab, Tuam Tshoj, tuam ntxhab, lwm tus neeg, Hoobkas, kho kom haum
