October 2014
October 2014 (Complete Issue PDF)
Feature Articles
Low-Efficiency Motors and Gears Still Prevalent
Electric motor-driven systems
are the single largest enduser
of electricity, accounting
for over 40% of global consumption
according to the International
Energy Agency.
Servo Technology - Centralized or Decentralized
Which architecture type delivers the best technical and
commercial advantages ?
Electric Vehicles Need Quieter Gears
For Mark Findlay
of UK specialist driveline
consultancy Drive
System Design, reducing
gear noise to suit
the low noise levels in
an electric vehicle cabin
has meant throwing away the rule
book.
Technical Articles
Premature Bearing Failures in Wind Gearboxes and White Etching Cracks
Wind turbine gearboxes are subjected to a wide variety of operating conditions, some of which may push the
bearings beyond their limits. Damage may be done to the bearings, resulting in a specific premature failure mode
known as white etching cracks (WEC), sometimes called brittle, short-life, early, abnormal or white structured flaking
(WSF). Measures to make the bearings more robust in these operating conditions are discussed in this article.
Made in China: A GM Engineer's First-Hand Perspective on the Chinese Roller Bearing Industry
Believe me when I tell you that â” as
a domestic automotive engineer â” I
bleed U.S. manufacturing.
I have never lived more than 50
miles from Detroit,
Departments
Made in the USA, Sourced in China (Publishers Page)
If you read only one article this issue, it should
be Norm Parkerâ™s article on the Chinese bearing
manufacturing industry. Parker is an engineer
with General Motors, a true industry insider who has become
a regular contributor to Power Transmission Engineering.
Bearing Basics (Ask the Expert)
BEARINGS BASICS Q&A:
IN CASE YOU DIDNâ™T KNOWâ¦
Product News (Product News)
News about new Products in the industry.
Calendar (Events)
The Calendar for events happening in the industry
Industry News (Industry News)
PERSONNEL CHANGES AND EXPANSION HIGHLIGHT CICERO,
ILLINOIS GEAR MANUFACTURER
Chariots to Steamboats to E-Fans (Power Play)
Heaven help Mr. Deane were
he around today.
In our non-stop world of transportation
& transport technology, for at least
the past decade it is without question
the electric car that has drawn most
of the attention