Thaks to you all for the help, The liner has to be cilindrisch. I do not get the drawings, but can order spare parts at a local service center in Rotterdam.
We have the manual and operating books, not a sectional drawing of the compressor. I will check tommorow morning the dimensions but i think the running stroke is taper.
Is it maybe possible to provide us such a drawing. Or some body know a contact or e-mail adres of LMF facilities.
those cilinders are new, manufacter is LFM from Autrich.
The piston himself is cilindrisch.
The cilinderdiameters are bigger at the suction side
1st stage 25bar 2nd stage 75 bar and the 3th stage 200bar
2de and 3th is on the same rod.