I lost a good friend in October—one that many of you might know. Carlo Costi of Sogimex S.A.S. in Caponago (Milano), Italy, came out of the EMO show in Milan on October 28, caught a taxi and called his wife, Mariella, to tell her that he wasn’t feeling well. He died—in the taxi—on the phone—talking to his wife. He was 60 years old.
To meet the future goals of higher productivity and lower production costs, the cutting speeds and feeds in modern gear hobbing applications have to increase further. In several cases, coated carbide tools have replaced the commonly used high speed steel (HSS) tools.
Excess lubricant supply in gearing contributes to power loss due to churning as well as the requirements of the lubrication system itself. Normally, a much larger amount of oil than required is used for cooling because so much of it is thrown away by centrifugal force. To lower the amount of lubricant required and
reduce those losses, it is necessary to discover the ideal location of the supplying nozzle.
The following article is concerned with the analysis of the wear-reducing effect of PVD-coatings in gearings. Standardized test methods are used, which under near-real conditions enable
statements to be made about the different forms of damage and wear (micropitting, macropitting, scuffing).
Large marine gearboxes. More than a year in production, each weighing 125,000 pounds, the gearboxes were for
U.S. Navy amphibious ships, for combining the power of 10,000 hp diesel engines to drive propeller shafts. They were also the last major gear products shipped from
Philadelphia Gear Corp.’s King of Prussia factory.