Improved Raceways and Pressed Steel Cages Dramatically Enhance Performance & Versatility
DANBURY, CT, January 23, 2006 - Employing a significantly improved
honing procedure known as "Plateau Finishing," INA/FAG engineers have
dramatically reduced both friction moment and raceway surface roughness
on their new X-Life(TM) Angular Contact Ball Bearings. Together with a
new optimized design of the pressed steel cages, INA/FAG has been able
to increase bearing service life by up to 50%.
Used wherever high thrust loads, high speeds and elevated temperatures
are part of operating conditions - as well as the need for high running
accuracy, the new X-Life Single Row Angular Contact Ball Bearings
utilize these latest advancements to increase the fatigue limiting load
by more than 30%. Numerous applications will benefit from these enhanced
bearings, including electrical machines, pumps, compressors, and air
handling equipment, as well as textile and printing machinery, turbines
and a multitude of gearboxes. Operational advantages include:
o Lower operating costs resulting from reduced friction, lower bearing temperatures and reduced lubricant stressing
o Quieter running
o Suitable for high speeds
o High rigidity
o Universal designs for mounting in pairs
o More efficient bearing arrangements for significantly longer life
o Sealed and lubricated for life
In early 2004, INA/FAG announced its commitment to a new line of
anti-friction bearings called X-Life, which combine the experience,
innovation and problem-solving capabilities of both companies. The
X-Life program brought a new level of standards to rolling bearings and a
significantly improved price/performance ratio, incorporating
advancements in ball and raceway finishes, improved kinematics, special
materials and other innovative processes. The results have meant lower
noise, reduced maintenance, higher load capacity and longer service
life.
The grinding and honing methods used in INA/FAG's new Plateau Finishing
production technology have significantly improved the quality of the
bearing surface finishes and produced a greater profile accuracy of the
raceways. Friction moment has been reduced by up to 10%, and the
fatigue-limiting load has been increased by 30%, resulting in a dramatic
improvement in service life of up to 50%.
Advanced Cage Design
The INA/FAG engineering team carefully evaluated the cage geometry in
the angular contact ball bearings, and completely redesigned the contact
area between the balls and the cage pockets. This helps achieve optimum
contact and avoids wear in the cage pockets resulting from the backward
and forward drifting of the balls. The newly optimized contact geometry
leads to reduced friction and lower energy consumption and also results
in less grease stressing and a reduction in grease contamination. In
fact, tests show that grease life can be extended by up to 200%.
The X-Life Angular Contact Ball Bearings are available with the new
pressed steel cage, and can also be sealed on one or both sides. The
unsealed versions are heat resistant up to 150°C. Compared to bearings
with brass cages, they are appreciably lighter, while offering the same
excellent dynamic running properties. And since these new X-Life
bearings are insensitive to synthetic lubricants and aggressive media,
they are ideally suited for raising the productivity uptime in the
chemical and mineral oil industries. They are also available in
universal design and tolerance class P5 (Abec 5).
Existing brass and polyamide caged versions are still available with the
improved X-Life raceway surface finishes for applications where they
may be better suited than the steel cage variant.
From: http://news.thomasnet.com/fullstory/Ball-Bearings-are-designed-for-optimal-service-life-474507
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