BT-SLN Itu-loka Fa'ai'uga Mill U'u

1. maualuga concentricity, aafiaga lelei faagasologa, faatinoga sili atu mautu e faaleleia ai le faagasologa lelei ma faalautele meafaigaluega ola.
2. O le mea mataʻutia o le 20CrMnTi, o loʻo i ai le faʻatinoina o le faʻatinoga, le umi o le auaunaga ma le faʻaleleia atili o le maaa o le meafaigaluega.
3. O le meafaigaluega e faʻaaogaina le faʻaogaina o le faʻaogaina o itu e lua, lea e faʻapipiʻi vavalalata i itu uma e lua o le spindle e faʻaitiitia ai le faʻaogaina o meafaigaluega ma faʻaitiitia ai le vibration, ma faʻaleleia lelei le uamea o le meafaigaluega.