Like many of you in the gear industry, we’ve been working extremely hard over the past few months getting ready for Gear
Expo 2013, which takes place September 17-19 in Indianapolis.
Although a comprehensive on-site gearbox inspection is desirable in many situations, there may be constraints that limit the extent of the inspection such as cost, time, accessibility and
qualified personnel. This article describes the equipment and techniques necessary to perform an on-site gearbox inspection.
There is a great need for future powertrains in automotive and industrial applications to improve upon their efficiency and power density while reducing their dynamic vibration and noise initiation. It is accepted that planetary gear transmissions have several advantages in comparison to conventional transmissions, such as a high power density due to the power division using several planet gears. This paper presents planetary gear transmissions, optimized in terms of
efficiency, weight and volume.
In the summer of 1974, long before Argo, there was “AZORIAN” -- the
code name for a CIA gambit to recover cargo entombed in a sunken Soviet submarine -- the K-129 -- from the bottom of the Pacific Ocean. The challenge: exhume -- intact -- a 2,000-ton submarine and its suspicious cargo from 17,000 feet of water.
The new chairman of the AGMA Technical Division Executive Committee explains what's involved in the process of developing technical standards at the AGMA.
Methods of examining large ring gear
teeth to detect surface breaking discontinuities have often been time-consuming and limited in terms of data collected. Methods such as visual and magnetic particle inspection can miss critical discontinuities. However, a new ASTM international standard provides a more effective method for gear examination using eddy current array, a technology that has been widely used but, until now, not standardized.