Reciprocating compressor with dry lubricating system

摘要: The compressor contains at least one piston (5) guided in a dry-running manner which, together with cylinder insert (33), bounds ring gap which is open over the common longitudinal section each case and permits leakage flow of compressed medium. coupled via rod (42) to support part (38) displaceably direction its axis (6) connected drive device. cooperates surfaces (43) are convex end faces permit relative movements respect extend transversely (6). Accordingly, parallel guidance (33) achieved not influenced by oscillations driving parts. has metallic basic body (61) sleeve member (62) made plastic material on running surface formed. manufactured whose coefficient thermal expansion corresponds approximately resultant materials (62). accordance invention particularly suitable for oil-free compression gas.