The phrase "as a central axis" is correct and usable in written English.
It can be used to describe something that serves as a main point or focal point around which other elements revolve or are organized.
Example: "In our discussion of the project, we will consider sustainability as a central axis of our strategy."
Alternatives: "as a focal point" or "as a main pillar".
In Allora and Calzadilla's "Revolving Door," a troupe of Rockettes-style dancers are lined up from wall to wall, leaving viewers stuck in their hold as they move around a central axis.
Because the south transept is similar in dimension to the nave and choir, views of the building from the south-east and south-west give the impression of a building balanced around a central axis, with its tower as the hub.
She applied that theory by extending the house through a central axis onto the grounds -- the main axis from the house to the back of the property seen as an overall landscape painting, the foreground as a geometric courtyard framed by a trellis, the middle ground a meadow and the background a woodland border with a statue hinting at a trail beyond.
Dividing the exhibition space into eight halls, each as large as a medium-sized American convention center, Fuksas has placed them on either side of a central axis, an elevated street a mile long.
As Guyot explained, the southern Appalachians were entirely unlike most mountain chains, for instead of a central axis they formed a convoluted and interlocking set of ranges.
Cnidarians are radially symmetrical (i.e., similar parts are arranged symmetrically around a central axis).
The fruit takes its name from the starlike arrangement of its carpels around a central axis.
The paired gills, separated by a central axis, are suspended from the mantle roof.
It's essentially a big balloon that spins on a central axis — parallel to the wind instead of opposed to it, if I understand correctly.
Light photons are projected at the screen along a central axis, through the pin hole.
