Hi

If anyone could please advise or help me with this topic I would greatly apreciate it.

I Am busy Designing an hydraulic cylender, and i need to put a spiral groove in the retainer bush, so, BASICALLY, i have a barrel that i need to put a spiral groove in.

Does anyone have any idea on how to do this, 100mm o/d x 80mm i/d x 100mm long, with a spiral groove on the inside: 2.5 radius x 2mm deep with a 25 pitch.

Thank you.