Kev lag luam tsim khoom siv tshuab xav tau ntau hom iav los ua haujlwm tshwj xeeb thiab ua tau raws li cov kev cai ntawm kev siv tshuab. Nov yog qee hom iav thiab lawv cov haujlwm:

1. Cov iav cylindrical: siv dav rau ntawm cov bearings los muab torque thiab hloov pauv lub zog.
2. Cov iav bevel: siv rau hauv cov xwm txheej uas cov bearings raug tilted kom ua tiav kev sib kis zoo dua.
3. Cov iav kab: siv los muab qhov sib piv kis tau zoo dua, feem ntau siv rau hauv qhov xwm txheej ceev ceev qis-torque.
4. Helical iav: siv los muab kev sib kis torque siab thiab daws qhov teeb meem ntawm axial qhov chaw txwv.
5. Cov iav txo qis: siv los txo qhov ceev ntawm lub zog tsav tsheb kom ua tiav kev tswj hwm cov khoom siv kom zoo.

Ntxiv rau cov haujlwm saum toj no, cov iav kuj tseem yuav tsum ua kom tau raws li qee qhov kev cai, xws li:

1. Qhov yuav tsum tau ua kom raug: qhov tseeb ntawm lub iav muaj qhov cuam tshuam loj rau kev ua haujlwm ntawm lub kaw lus.
2. Kev tiv thaiv kev hnav: lub iav yuav tsum ruaj khov kom haum rau kev siv mus sij hawm ntev.
3. Kev ruaj khov ntawm thermal: lub iav yuav tsum muaj kev ruaj khov ntawm thermal kom ntseeg tau tias kev sib kis tau zoo.
4. Cov khoom siv zoo: cov iav yuav tsum tau tsim los ntawm cov khoom siv zoo kom ntseeg tau tias nws ruaj khov thiab ua tau ntev.

Cov no yog cov kev cai ntawm kev lag luam tsim khoom siv rau cov iav.