GGB Presents Paper on Development of Pintle Bearings for Panama Canal
Resource from: GGB Likes:3068
Aug 04,2011
(August 3, 2011)
Heitor Sarro, product manager for GGB Brasil, presented a technical paper on the development of environmentally friendly, maintenance-free pintle bearings for the miter gates that open and close the navigational locks of the Panama Canal.
Co-authored with GGB Brasil’s Flavio Soto, segment manager; Willian Barreto, product and applications analyst; and the Panama Canal Authority’s locks overhaul engineer, Fernando Sucre, the paper was presented at this year’s HydroVision International Show, July 19-22 in Sacramento, CA.
Titled “Development phases of a high-performance hemispherical bearing as an alternative to conventional greased bearings based on customer requirements,” the presentation discussed the project from design through production of the new bearings.
Covered were the historical background, procurement and tests, scale-model construction and testing, product definition, bearing design, finite element analysis of full-size bearings, and conclusions.
The process began with gathering, analyzing and structuring application data for House of Quality methodology to correlate customer needs (i.e. greaseless operation, 25-year service life, abrasion-resistance, submerged operation, ease of assembly and operation) into functional requirements, notably no absorption of water, low coefficient of friction and embeddability.
These requirements indicated the need for a new polymeric material and breakthrough design concept. One-quarter-scale prototype bearings, featuring polymeric lubricant plugs inserted into a one-piece, hemispherical bronze shell, successfully underwent accelerated life testing.
To assess the performance of the full-size bearings without having to build a costly prototype, GGB performed finite element analysis on a modeled bearing, confirming it could withstand the contact pressure and shear forces of actual operation with a sufficient margin of safety.
The resulting bearings, which are lubricated by a matrix of PTFE-based plugs covering 75% of the sliding surface and protruding slightly above it, have been performing effectively since their installation in 2009.
(GGB)
【CBCC News Statement】
1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
BRIEF INTRODUCTION
Cnbearing is the No.1 bearing inquiry system and information service in China, dedicated to helping all bearing users and sellers throughout the world.
Cnbearing is supported by China National Bearing Industry Association, whose operation online is charged by China Bearing Unisun Tech. Co., Ltd.
China Bearing Unisun Tech. Co., Ltd owns all the rights. Since 2000, over 3,000 companies have been registered and enjoyed the company' s complete skillful service, which ranking many aspects in bearing industry at home and abroad with the most authority practical devices in China.
