He aha ke ʻano o ka Needle Roller ʻoi aku ka maikaʻiHāpais ?

ʻO nā huila cylindrical like nā mea ʻōwili o nā bearings huila nila. Hoʻolālā ʻia lākou e hōʻemi i ka friction o kahi ʻili e kaʻa ana. Ma muli o kona ʻano, ʻoi aku ka nui o ka ʻili o ka nila e pili ana me ka ʻili o waho o ka bearing.

He pālahalaha a he ʻano radial nā bearings nilala axial ʻoiai he ʻano cylindrical ka bearings needle radial a holo like nā wili me ke koʻi o ke kumu.