Lub nplhaib tuav yog cov khoom siv kho tshuab siv los tiv thaiv axial thiab radial txav. Nws feem ntau yog ua los ntawm cov hlau lossis lwm yam hlau thiab muaj lub zog siab thiab rigidity. Lub luag haujlwm tseem ceeb ntawm lub nplhaib tuav yog tswj txoj haujlwm axial, tso cai rau cov kabmob, lub zog, thiab lwm yam khoom siv ua haujlwm raws li cov cai tau teev tseg. Kev tuav lub nplhaib yog qhov tseem ceeb tshwj xeeb hauv kev ua haujlwm siab - nrawm nrawm vim tias lawv txo qis kev vibration thiab suab nrov thaum tig.
Lub installation ntawm tuav rings yog yooj yim; lawv feem ntau yog nias rau hauv lub tog raj kheej ntawm cov khoom siv kom ruaj ntseg bearings thiab lub zog. Yog li ntawd, cov nplhaib tuav feem ntau yog ntsia nruab nrab ntawm cov ncej bores ntawm bearings lossis gears hauv cov khoom siv.
