Metal galling is a common problem in industries when metals are extensively used such as the aerospace industry. Aerospace aircraft bearings are made from metals like steel, aluminum and magnesium. Stainless steel fasteners used in aerospace aircrafts are particularly vulnerable to thread galling, and it also occur in alloys that self-generate an oxide surface film, such as aluminum and titanium. During the tightening of the fastener, pressure builds between the contacting metal surfaces, which break down the protective oxide coatings. This way friction is created between the metals and heat is generated which can fuse and seize the nut and bolt together. This can be prevented by using Aerospace Dry Lube or lubricant.

Galling In metals used in Aerospace Bearings:

Metals like stainless steel are a popular fastener material used for making bearings of aircraft’s, because of its inherent resistance to corrosion. When metals bearing such as nut and bolt come in contact with each other, heat is created due to friction and this can cause damage and reduce the performance of the aircraft.

How to Prevent Galling In Metals:

Grease and oils are the most commonly used lubricants that are used for reducing friction in metals. But, they are not the ideal type of lubricants, because of their many shortcomings. For one reason they don’t have long lasting effect and require maintenance. They are in liquid form and require an enclosure. Dry lubricants or dry lube is the best lubricating material. Since they are dry they do not need any enclosure and they last longer than the traditional lubricants. For preventing galling in aerospace aircrafts bearing, dry lubes are the best option. Aerospace aircraft such as combat helicopters are vulnerable to sudden loss of transmission lubrication due to enemy fire. Aerospace dry lube can increase the transmission life, which will increase the probability of finding a suitable emergency landing site.

Aerospace dry lube can prevent galling and seizing in the metal bearings, reduce wear, inhibit corrosion, increase thermal stability and improve chemical resistance. The best lubricants are those which can survive higher loads and environmental extremes and does not attract dust or foreign particles and will not wash off like standard wet lubricants will. Dicronite dry lubrication has been designed according to the industry specification and can increase bearing life sufficiently to enable an emergency landing per the military’s test conditions.

Dicronite dry lubrication is widely used as an anti-galling coating. Developed as part of NASA’s space exploration program, Dicronite® dry lubrication is the proven trusted dry lubrication technology for the aerospace, plastics molding, medical devices, mechanical equipment, semiconductor and food processing industries. The Dicronite dry lubrication process complies with DOD-L-85645A and SAE AMS 2530A specifications as well as many company specific specifications. See more at: www.dicronite.com