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Chaîne à rouleaux
Regina CHROMA series outlast standard chains with case hardened pins thanks to specially manufactured pins and bushings
which greatly increase the chain's wear resistance.
Pins are chemically treated following a process called chromizing which diffuses on the surface of the pins chromium
carbides. Chromized pins reach a surface hardness 2 to 3 times the surface hardness of case hardened pins.
CHROMA chains have specially shaped bushings so as to allow a perfect contact with the pins, fact that enhances even more the perfect manufacturing precision of these chains. This special shaping of the bushings developed by Regina is called "profiling". This process eliminates the "barrel effect" which would otherwise act on the bushings as a result of them being forced into the plates reducing the working surface area of the chain