Page 1 of AeroCres Fracture-tough Airframe Products by RBC Bearings

rbc aerospace bearings aerocres fracture-tough airframe products fracture-tough airframe products enhance corrosion resistance for many years corrosion has been a significant problem with bearings used in the aircraft industry while 440c stainless steel has been used successfully in many aircraft applications it is not suitable for the demands of rod end banjos or track roller studs these two bearing components require a full rc 58 hardness in the raceway area and a softer tougher material elsewhere this is not attainable with 440c rbc s aerocres® products provide the unique solution that meets these dual material requirements we have selected a specialized carburized stainless steel and have developed and optimized the heat treatment process that resulted in a homogeneous microstructure delivering both corrosion protection and core fracture toughness currently this new material is being used for many structural bearing components such as rod end banjos track roller studs and outer rings fracture toughness corrosion resistance and long fatigue life are critical requirements for these components aerocres® fracture-tough airframe products offer enhanced corrosion resistance in harsh operating environments ® benefits · excellent fracture toughness superior to 440c · proven corrosion resistance similar to 440c · compressive residual stresses in carburized case · lower starting torque after extended exposure to a neutral salt solution astm-g44 · meets or exceeds government requirements for fatigue and static testing per as 39901 · longer bearing life resisting premature corrosion applications bearings located in exposed corrosive positions of aircraft such as · landing gear and doors · leading and trailing edges · engine controls · tail section 866.rbc.aero www.rbcbearings.com

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