Rider rings or Guide rings
Main functions of rider rings :
The function of rider rings, used mainly in oil free or mini-lube compressors, is to support or guide the piston and rod assembly and prevent contact between the piston and the cylinder (risk of seizure).
High-performance rider rings :
- Different designs and types of cuts are also used.
- The materials used have the same wear resistance as the piston rings, in order to meet the requirements of the most stringent conditions of service.
- All of these parts are generally designed with decompression grooves to avoid their operating as piston rings which could cause premature wear.
