Brake disc flattening equipment is designed as an accessory to the Half-Hub cupping machine.
Two parts comprise the tool, a concave base that will accept discs up to 24" diameter and a 10.5" diameter convex punch. Discs with a bore size between 3" and 10" and an outside diameter between 10" and 24" can generally be cold flattened by the machine using an hydraulic ram of 30 tons capacity.
Hanley Smith – Solving aircraft maintenance issues
