The Carlyle Johnson Machine Company (CJM) has introduced its Centritec SealTM technology for use in a new application; vertical shafts for rotating machinery.
The company’s latest design uses the same centrifugal pressure principles as in its horizontal shaft seal with one major difference; the vertical shaft seal includes a sump to collect the lubrication when the equipment is not running. This feature, specifically designed for vertical shafts, allows for continuous high-speed operation without any spillage or weepage, resulting in less machine downtime and reduced operational costs.
Centrifugal pressure
“By using the centrifugal pressure developed within our seal, we are able to pump the lubricating fluid to both the upper and lower bearings and to prevent seal leakage when rotation stops.” says Doug Rode, managing director of CJM’s Centritec Seals division. “This allows end users to realize the advantages of using a non-contact seal regardless of the drive shaft orientation,” he concluded.
The Centritec Seal for vertical shafts, like the entire Centritec line of products, utilizes Carlyle Johnson’s patented Centritec Seal technology to create custom seal designs for any type of shaft. Currently Centritec is the only manufacturer to produce a non-contact, centrifugal pressure seal for both vertical and horizontal shafts.
The seals are suitable for a variety of applications including industrial fans, pumps, compressors, turbine/generator, rolling mills, machinery tools, heavy equipment, conveyors and many more.
