In the most demanding applications, PVD coatings can help extend the life of gears by increasing surface hardness and durability.
Even though gears are made of hardened steel or metal alloys they can still fail and have a shorter life cycle in many applications. These include subjecting the gear to high loads, metal-to-metal contact, extreme temperatures, high-speeds or if contaminants are present. So what are the recommended options to extend life under such conditions?
The article below by Jeff Elliott in Gear Solutions, discusses the available options and the conditions and applications most suited for them.
It is certainly worth a read, as Balinit C has been shown to quadruple the service life of high-speed gears. See more here.