AIREX Air Shaft Doughnut Type

When air is inserted, many lugs (tabs) will protrude from inside the shaft, and the core can be clamped.
This air shaft is a hollow cylindrical shape.

AIREX Air Shaft Doughnut Type


(1) Air inlet
AA: Body edge to lug BB: Body edge to lug 
D1: Body outer diameter D4: Lug expanded diameter D’: Mounting shaft outer diameter
L: Full length L1: Shaft body length L2: Lug to lug


  • Even if the shaft that you are currently using is not an air shaft, it can be transformed into an air shaft by mounting the doughnut type to the shaft.