AeroCres Fracture-tough Airframe Products0 pages

RBC Aerospace Bearings
®

AeroCres Fracture-tough Airframe Products
Fracture-tough airframe
products enhance corrosion
resistance
For many years, corrosion has been
a signicant problem with bearings
used in the aircraft industry. While
CRES 440C 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 CRES 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.

Benets
• Excellent fracture toughness
superior to CRES 440C.
• Proven corrosion resistance
similar to CRES 440C.
• Compressive residual stresses
in carburized case.

Applications
• Meets or exceeds government
requirements for fatigue and
static testing per AS 39901.
• Longer bearing life resisting
premature corrosion.

Bearings located in exposed
corrosive positions of aircraft
such as:
• Landing gear and doors
• Leading and trailing edges
• Engine controls

• Lower starting torque after
extended exposure to a neutral
salt solution (ASTM-G44).

• Tail sections

866.rbc.aero

www.rbcbearings.com