Nā huahana
ʻO nā ʻāpana huila lawe puʻupuʻu me kahi huila spherical a i ʻole tapered roller bearing i kau ʻia i loko o kahi hale hao i hoʻokaʻawale ʻole ʻia i hiki ke kau ʻia i nā papa lawe maʻamau i ka mākeke.Hoʻopaʻa ʻia nā ʻāpana a lubricated a mākaukau e hoʻohana.