1) Ho nepahala ha koranta ea sehlooho le koranta ea molamu o hokahanyang, ke hore, boemo ba mamello ea boholo ba bophara hangata ke IT6 ~ IT7; ho kheloha moeli oa bophara ba koranta e kholo ke + 0.05 ~ -0.15mm; kheloha moeli oa radius ea ho reteleha ke ± 0.05mm; Ho kheloha moeli oa tekanyo ea axial ke ± 0.15 ~ ± 0.50mm.

2) Kereiti ea mamello ea bolelele ba koranta ke IT9 ～ IT10. Mamello ea sebopeho sa jenale, joalo ka ho pota-pota le cylindricality, e laoloa ka har'a halofo ea mamello ea boholo.

3) Ho nepahala ha boemo, ho kenyeletsoa ho ts'oana ha koranta ea sehlooho le koranta ea molamu o kopanyang: ka kakaretso ka har'a 100mm le ho feta 0.02mm; ho kopana ha likoranta tse kholo tsa crankshaft: 0.025mm bakeng sa lienjineri tse nyane tse lebelo, le bakeng sa lienjineri tse kholo le tse tlase - 0.03 ～ 0.08mm; boemo ba koranta e 'ngoe le e' ngoe ea molamu o kopanyang ha e fete ± 30 ′.

4) Bokhopo ba bokaholimo ba jenale ea molamu o kopanyang le koranta e kholo ea crankshaft ke Ra0.2 ～ 0.4μm; bokaholimo ba jenale ea lithupa tse hokelang, koranta e kholo, le fillet ea khokahanyo ea crankshaft ke Ra0.4μm.
Ntle le litlhoko tsa tekheniki tse kaholimo, ho na le melao le litlhoko tsa kalafo ea mocheso, ho leka-lekanya ka matla, ho matlafatsa bokaholimo, bohloeki ba masoba a phasejeng ea oli, mapetsong a crankshaft, le tataiso ea potoloho ea crankshaft.