eta meaning, definition, what is eta: the seventh letter of the Greek alphabet. Learn more.
shafts definition, shafts meaning | English dictionary. shaft. 1 the long narrow pole that forms the body of a spear, arrow, etc. 4 a rod or pole forming the handle of a hammer, axe, golf club, etc.
Journal (n) The part of a shaft that rotates within a bearing Kerf (n) A channel or groove cut by a saw or other tool. Key (Woodruff key shown) (n) A small block or wedge inserted between a shaft and hub to prevent circumferential movement. Keyseat (n) A slot or groove cut in a shaft to fit a key.