1) Kurongeka kwejenari huru uye yekubatanidza tsvimbo yejenari, ndiko kuti, dhayamita dimension kushivirira nhanho inowanzova IT6 ~ IT7; kutsauka kwehupamhi hwejenari huru ndeye + 0.05 ~ -0.15mm; muganho kutsauka kweradius inotendeuka ndeye ± 0.05mm; Muganho kutsauka kweaxial dimension ndeye ± 0.15 ~ ± 0.50mm.

2) Giredhi rekushivirira rehurefu hwejenari iIT9 ～ IT10. Kushivirira kwechimiro chejenari, sekutenderera uye cylindricality, kunodzorwa mukati mehafu yedimensional kushivirira.

3) Kurongeka kwenzvimbo, kusanganisira kuenderana kwejenari huru uye redhi rekubatanidza tsvimbo: kazhinji mukati me100mm uye isingapfuuri 0.02mm; kubatanidzwa kwemajenari makuru e crankshaft: 0.025mm yeinjini diki-zvinomhanya, uye kune hombe uye yakaderera-speed injini 0.03 ～ 0.08mm; nzvimbo yejenari yega yega yekubatanidza tsvimbo haipfuuri ± 30 ′.

4) Kushata kwepamusoro kwejenari yetsvimbo yekubatanidza uye jenari huru ye crankshaft ndeye Ra0.2 ～ 0.4μm; kushata kwepamusoro kwejenarari yetsvimbo yekubatanidza, jenari huru, uye crank yekubatanidza fillet ye crankshaft iRa0.4μm.
Pamusoro pezvinodikanwa zvetekinoroji zviri pamusoro, pane mirau uye zvinodiwa pakurapa kupisa, kuenzanisa kwesimba, kusimbaradza kwepasi, kuchena kwemaburi ekupfuura nemafuta, crankshaft cracks, uye crankshaft rotation direction.