Bell Hammer forms its protective film through friction-based tribochemical reaction, not heat alone. Heating to 100–200°C does not significantly increase film formation by itself. Temperature can help oil flow and spread, but without sliding contact, the reaction that creates the film will not progress.
For parts where break-in movement is difficult, the following methods are effective:
• Gently move the parts under very light load to create small amounts of sliding.
• Rub a thin layer into the metal surface using a cloth or cotton swab.
• After assembly, operate the mechanism at low load for a short time to allow film formation.
In short, friction is required. Heat alone does not establish the Bell Hammer film.