1) ʻO ka pololei o ka puke pai nui a me ka hoʻohui lāʻau puke puke, ʻo ia hoʻi, ʻo ka pae hoʻomanawanui o ke anawaena ʻo IT6 ~ IT7; ʻo ka palena palena ākea o ka puke pai nui he + 0.05 ~ -0.15mm; ʻo ka palena palena o ka radius huli ʻo ± 0.05mm; ʻO ka palena palena o ka nui axial he ± 0.15 ~ ± 0.50mm.

2) ʻO ka helu hoʻomanawanui o ka lōʻihi o ka puke pai ʻo IT9 ～ IT10. Hoʻomalu ʻia ke ʻano hoʻomanawanui o ka puke pai, e like me ka poepoe a me ka cylindricality, i loko o ka hapalua o ka hoʻomanawanui.

3) Pono ke kūlana, me ka like o ka puke pai nui a me ka puke pai lāʻau hoʻohui: maʻamau i loko o 100mm a ʻaʻole ʻoi aku ma mua o 0.02mm; ʻO ka coaxiality o nā puke pai nui o ka crankshaft: 0.025mm no nā ʻenekini kiʻekiʻe kiʻekiʻe, a no nā ʻenekini nui a haʻahaʻa 0.03 ~ 0.08mm; ʻaʻole ʻoi aku ke kūlana o kēlā me kēia puke pai lāʻau hoʻohui ma mua o ± 30 '.

4) ʻO Ra0.2 ～ 0.4μm ka roughness ili o ka puke pai lāʻau hoʻohui a me ka puke pai o ka crankshaft; ʻO ka roughness ili o ka puke pai koʻokoʻo hoʻohui, puke pai nui, a me ka crank pili fillet o ka crankshaft ʻo Ra0.4μm.
Ma waho aʻe o nā koi ʻenehana i luna, aia nā lula a me nā koi no ka mālama ʻana i ka wela, ke kaupaona ʻana, ka hoʻoikaika ʻana i ka ʻili, ka maʻemaʻe o nā lua o ka aila, nā māwae crankshaft, a me ke kuhikuhi ʻana o ka crankshaft.