Amabhola ajwayelekile ensimbi anokuqukethwe kwekhabhoni ne-chromium akhethiwe futhi aqiniswa ukuze amelane nokucindezela okukhulu phakathi kwento eginqikayo namaringi okuthwala.
I-Carbonitriding kuwo womabili amaringi angaphakathi nangaphandle kuyinqubo eyisisekelo yokuqina yabahlinzeki abaningi be-TPI ball bearing. Ngalokhu kwelashwa okushisa okukhethekile, ubulukhuni endaweni yomjaho buyanda; okunciphisa ukugqoka ngokufanele.
Insimbi ehlanzekile kakhulu iyatholakala kolunye uchungechunge lomkhiqizo wamabheringi ajwayelekile we-TPI manje, ukumelana okuphezulu kokugqokwa kutholwa ngokufanele. Njengoba ukukhathala kokuxhumana kuvame ukubangelwa ukufakwa okuqinile okungeyona insimbi, ama-bearings namuhla adinga amazinga akhethekile okuhlanzeka.