Jefa rudder bearing consists of a black anodized, high strength aluminum bearing housing, which, depending on the rudder stock diameter, will have either one or two rows of captive roller bearings. The roller bearings provide an exceptionally low-friction co-efficient, typically 1/10 of that of a plain bronze or plastic bush. They do not suffer from absorption, which often causes problems on plain plastic bearings.

The self aligning version of the Jefa bearing has a similar construction, with the exception that an additional Delrin ball fits between the roller bearing and the anodized aluminum housing. The Delrin ball moves in a spherical seat which allows up to +/- 4 degrees of the angular deflection between the rudder stock and its bearings.



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CE certificates

As all Jefa Steering product have to be CE approved, we offer our CE certificates for download. These certificates can be show to the surveyor responsible for the CE approving of the complete ship. Please note that often a CE certificate is valid for a group of products with the same style of build. The file is a self extracting executable (exe file) with the CE certificates in Adobe PDF format.

 

CAD library

To assist you in your CAD drawing work, we offer the Jefa Steering CAD library for download. This CAD library contains Autocad 2000 dwg files. When unzipping this ZIP file, please check the "use folder names" choice as the directory structure of the library will stay in tact. Click here to download a free drawing viewer from Autodesk.

Release history:
11-9-2002 Initial release 1.0 available
14-10-2002 Release 1.1 available. All bulkhead steerers added.
28-11-2002 Release 1.2 available. All classic pedestals added and instrument housings.