noun
axial center; central axis
Technical term used in engineering, mechanics, and geometry to refer to the central line around which something rotates or is symmetrically arranged.
この部品の軸心がずれると、機械全体のバランスが崩れる。
If the axial center of this part shifts, the balance of the entire machine will be lost.
設計図には軸心の位置が正確に示されている。
The position of the central axis is precisely indicated on the blueprint.
Compound of 軸 (axis) and 心 (center, core). The spelling 軸芯 uses 芯 (core, wick) with a similar meaning.