There are many types of bearing greases for aviation wheel assemblies. Here, we will examine the four main types of bearing grease used by Parker's Aircraft Wheel & Brake Division, an industry leader in the design, manufacture, and support of superior braking systems since its founding in 1936.
Safety is the first step
1. Be sure to always use eye protection and rubber gloves when cleaning repacking or handling bearings.
2. Also remember to never mix any two bearing greases together because it may result in premature failure of the bearing.
3. Always replace bearings as a set cup and cone.
The four types of bearing greases used by Parker Aircraft Wheel & Brake Division are:
Cleveland Wheel and Brake technicians and service guides and general maintenance manual calls out to specifications mill PRF81322 and D O D G245088.
The first of the four greases we will explore is SHC 100 Mobil aviation grease. This grease is synthetic and provides a high dropping point. It has excellent resistance to water wash, and it is an outstanding protector against wear corrosion and high temperature, which can be damaging. And finally, it is red in color.
The Aeroshell grease 22 is a versatile multi-purpose grease for aircraft wheel bearings. It is recommended for general anti-friction bearings operating at high speed and at high or low temperatures, this grease is brown in color.
The HCF grease P/N 605 is an amphibious grease. It provides protection against the corrosive action of fresh water, salt, water, and chemical fumes. It maintains lubricating film under adverse conditions of load and torque, and it is dark brown in color.
The fourth grease is the OMNI waterproof grease number two, which is also an amphibious grease. This grease acts as a rust preventative protecting bearings seals and open gears against costly wear. It repels fresh or salt waters. This grease is green in color.
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This blog was contributed by the Aerospace Technology Team, Parker Wheel & Brake Division.