21000-28-05-00-060-03-02 21000-28-05-00-080-03-02 Bently Nevada proximity probe housing assembly Description T he 21000 series housings from Bently Nevada are external-mount metal housings for proximity probe systems, intended to provide a rigid, sealed mount for a proximity probe (often a 3300-series probe) so that probe gap monitoring and replacement can occur without full machine disassembly. 21000-28-05-00-060-03-02 21000-28-05-00-080-03-02 Details FAQ 1. Are these