Ua koho ʻia a hoʻopaʻakikī ʻia ke kila o nā bearings pōpō maʻamau me ka nui o ke kalapona a me ka chromium e kū i ke kaomi ikaika ma waena o ka ʻāpana ʻōwili a me nā apo bearings.
ʻO ke kāpona ʻana ma nā apo o loko a me waho he hana hoʻopaʻakikī maʻamau no nā mea hoʻolako pōpō TPI he nui. Ma o kēia mālama wela kūikawā, hoʻonui ʻia ka paʻakikī ma ka ʻili o ke alahele; kahi e hōʻemi ai i ka ʻaʻahu.
Loaʻa ke kila maʻemaʻe loa i kekahi o nā huahana bearings pōpō maʻamau TPI i kēia manawa, loaʻa ke kūpaʻa ʻaʻahu kiʻekiʻe e like me ia. ʻOiai ʻo ka luhi o ka hoʻopili ʻana i hana pinepine ʻia e nā hoʻokomo paʻakikī ʻaʻole metala, pono nā bearings i kēia mau lā i nā pae hoʻomaʻemaʻe kūikawā.