O leslewing bearinge masani lava ona aofia ai se mama i fafo, se mama totonu, elemene taʻavale, se masini faʻamau ma se masini lubricating.O se lagolago lagolago e mafai ona tauaveina axial avega, radial uta ma faʻaumatia le uta i le taimi e tasi.Fa'ailoga e pei ole malosi e amoina.Slewing bearing o se ituaiga fou o vaega o masini ua faasolosolo malie ona atiina ae ma le atinaʻeina o masini masini i le lalolagi i le 50 tausaga talu ai.Ua faasolosolo malie lava ona faalautele atu mai i tower cranes, truck cranes, ma excavators i masini felauaiga ma masini metallurgical., masini gaosi mea'ai, meafaigaluega a le militeri (tanks, fana anti-vaalele, radar, rocket launch pads), masini fa'afoma'i, apefa'i, savili, robots, nofoaga fa'afiafiaga feliuliua'i ma isi fanua.

Le atinae oslewing bearingO oloa i Saina na amata tuai, o lona uiga, e leʻi i ai se fua faʻapitoa seia oʻo i le faaiuga o le 1970s ma le amataga o le 1980s.I le taimi muamua, o le laina tasi fa-point contact poloslewing bearingsa sili ona faʻaaogaina i le maketi, ma o le taʻavale taʻavale sa i le va o le Φ500~Φ1500mm, faʻamaumauga mo le tele o latou;i le taimi nei, faʻatasi ai ma le atinaʻeina o masini faufale, taʻavale faʻapitoa ma robots fale gaosi oloa Faʻatasi ai ma le atinaʻeina o oloa slewing bearing, aʻo faʻateleina le manaʻoga mo le faʻaogaina o oloa i lea aso ma lea aso, o loʻo tuʻuina atu manaʻoga maualuga mo le lelei ma le faʻafouina o oloa.

Faʻatusatusa i le taimi muamua, o le taimi nei o le slewing bearings e tele ituaiga, pei o:

1. Le laina tasi fa fa'afeso'ota'i polo fausaga
2. Fa'asologa o lo'o fa'alava kolosi laina tasi
3. Laina lua polo eseese ma laina lua fausaga polo
4. E tolu laina ta'avale fausaga
5. Fa'atasiga Polo & Taila

Ma o lenei ua maualuga le saʻo, e mafai foi ona tatou olo nifo e puʻe ai le vasega saʻo 6.

Mo le mea mata, matou te le gata i mea masani 50MN, 42CRMO, o lea e mafai foi ona matou faʻatasi ma C45, S48C, poʻo isi atunuʻu vasega, e oʻo lava i le uamea 2CR13.

Afai e te manaʻomia le anti-corrosion, e mafai ona matou faia togafitiga faʻapitoa e pei o le valiina, galvanizing, faʻafefete faʻafefete le zinc, faʻapipiʻi nickel, ma isi.

Mo le taimi nei, o loʻo faʻaauau pea le atinaʻeina o le slewing bearings ma agai atu i le maketi maualuga.