He aha nā ʻokoʻa a me ka hoʻohana ʻana ma waena o nā bits eccentric a me concentric?

ʻO ka ʻokoʻa ma waena o ka bit drill eccentric a me ka drill bit concentric:

1, concentric paipu wili mea paahana no ka mea o kona owaho bit pā mānoanoa, ka like aperture hana, ka hopena mana hooili hopena 'aʻole i like maikaʻi me eccentric wili mea paahana, wale i loko o ka puka anawaena o ka nui, ka hopena o ka maikaʻi, akā, ke kumu kuai. ʻoi aku ka kiʻekiʻe ma mua o ka mea hana wili eccentric;

2, eccentric paipu wili mea paahana 'aʻole wale puka anawaena, a me ka maʻalahi hale, haʻahaʻa manufacturing kumu kūʻai, oluolu e hoʻohana, no laila, ua hoʻohana nui ia.