ʻO nā mea hana keleawe he ʻano mea hana i hoʻohana ʻia i nā ʻōnaehana mechanical kahi mea nui ka pono, ka lōʻihi, a me ke kūʻē ʻana i ka lole. Hana ʻia kēia mau mea hana mai ke keleawe keleawe, e hāʻawi ana i ka conductivity thermal a me ka uila maikaʻi loa, a me ke kūpaʻa corrosion maikaʻi.
Hoʻohana pinepine ʻia nā copper spur gears i nā noi kahi e koi ʻia ai ke kiʻekiʻe kiʻekiʻe a me ka hana maʻalahi, e like me nā mea kani pololei, nā ʻōnaehana automotive, a me nā mīkini ʻenehana. ʻIke ʻia lākou no ko lākou hiki ke hāʻawi i ka hana hilinaʻi a paʻa, ʻoiai ma lalo o nā ukana kaumaha a me nā wikiwiki kiʻekiʻe.
ʻO kekahi o nā pōmaikaʻi koʻikoʻi o ka copper spur gears ʻo ko lākou hiki ke hōʻemi i ka friction a me ka ʻaʻahu, mahalo i nā waiwai lubricating ponoʻī o nā alloys keleawe. ʻO kēia ka mea i koho maikaʻi loa no nā noi kahi ʻaʻole hiki ke hoʻomaʻamaʻa pinepine ʻia.