A square at the centre.
Two photographs give us a more specific starting point for the ratchet wheel. Compare the offered specimen with an isolated shape candidate, before attempting its connection to the barrel.
Square opening. Annular detail.
Face A shows the square opening, a circular detail around it and the toothed perimeter. The candidate preserves the opening and face arrangement with 62 specimen-derived teeth, without claiming an exact tooth profile.
A shape is not a fit.
Disc thickness, step height and direction, bore dimensions and material are estimates. The photographs do not establish the mating arbor, fastener or installed orientation. No working engagement is simulated.
What meets the square?
The wheel’s opening is visible. Its mating shaft needs its own evidence. These two photographs show a barrel offered as 3235-315 by rojamalex; it is a different listing from our ratchet specimen.
An opening at the other end.
180 × 180 source pixels, shown without enlargement. A detail crop; the complete barrel stays alongside it.The opposite face shows a central opening in the projecting shaft end. The photograph does not resolve its threads, depth, or the dimensions of a square seating surface.
Connection remains open. A separate supplier describes screw retention, but these photographs do not verify the fastener or fit. The ratchet and barrel stay separate in the reconstruction. Matching part labels alone cannot establish a joint between two specimens.
rojamalex · original barrel listing ↗ · Seller attribution and authenticity unverified. Supplier’s mounting claim ↗The shaft, on its own.
A separate listing offers this stepped part as the 3235 barrel arbor. Compare its visible outline with an isolated candidate. The original photographs establish appearance; the dimensions remain estimates.
Steps and flats.
The hidden shape stays open.
The recess depth and collar’s unseen faces are model assumptions. The photographs do not establish a mating fit with our ratchet or barrel specimens. This part remains separate.