ʻO nā bearings wili poepoe he apo o loko me ʻelua mau ala heihei i hoʻohuli ʻia ma ke kihi i ke axis bearing, kahi apo o waho me kahi ala heihei poepoe maʻamau, nā wili poepoe, nā cages a, i kekahi mau hoʻolālā, nā apo alakaʻi kūloko a i ʻole nā apo waena. Hiki ke hoʻopaʻa ʻia kēia mau bearings. Hoʻolālā ʻia ka hapa nui o nā bearings wili poepoe me ʻelua lālani o nā wili, e ʻae ana iā lākou e lawe i nā ukana radial kaumaha loa a me nā ukana axial kaumaha. Aia kekahi mau hoʻolālā me hoʻokahi lālani o nā wili, kūpono no nā ukana radial haʻahaʻa a ʻaneʻane ʻaʻohe ukana axial.
ʻO nā bearings mīkini pepa he mau ʻāpana mīkini pepa.
ʻO nā bearings mīkini pepa, ʻo ia nā bearings i hoʻopiha ʻia me kahi lubricant paʻa kūikawā e hāʻawi ana i ka lako mau o ka ʻaila lubricating no ka lubrication lōʻihi.
ʻO nā bearings wili poepoe ka mea nui i ka hoʻolālā, ʻoiai ke koho ʻana i nā bearings nui a me waena.
