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In 1991, Needelman and Zaretsky presented a set of empirically
derived equations for bearing fatigue life (adjustment) factors (LFs) as a function of oil filter ratings.
Tapered roller bearings can be set at initial machine assembly to any desired axial or radial clearance. This unique feature enables a designer to control bearings to meet anticipated application operating conditions, and thereby provide
optimum bearing and system performance.
The following short articles first appeared on www.powertransmission.com. They are
part of the ongoing series of hints, technical tidbits and inside knowledge presented by our resident blogger, Norm Parker. If you like what you see here and are interested in learning more, visit www.powertransmission.com/blog.
At Hannover Messe, Power
Transmission Engineering
had the opportunity to sit
down with Stefan Hantke,
president of
the Industrial
North America
division
of Schaeffler
USA, to discuss
the current
stateof-
the-art
in bearings
manufacturing,
the trends in industrial
bearings and the current state of U.S. manufacturing.
(In the meantime Stefan Hantke has taken over responsibility for the global sales activities of Schaeffler
Industrial)
Machine and equipment manufacturers
today are feeling more pressure
than ever to reduce costs without sacrificing
machine performance — a balancing
act difficult to achieve. OEMs often overlook a simple solution that can have a positive, long-term impact
on profitability for themselves and
their customers, i.e. — the elimination of bearing lubricant.
Spiroid and worm gears have superior advantages for hightorque and miniaturization applications. And for this reason they are particularly preferred in aerospace, robotic and medical applications. They are typically manufactured by hobbing technology, a process with a typical overall lead time of 4 to 14 weeks.