How about *NOT* securing a magnet to the shaft? A magnet rotating at high speed will probably cause a balance problem even if you can secure it. Use a gear tooth sensor and mount a small steel gear on the shaft. Search Digikey for "gear tooth sensor" (no quotation marks) for lots of sensors.
-----Original Message----- From: Thomas J Powderly <[email protected]> Sent: November 6, 2020 11:50 AM To: [email protected] Subject: [Emc-developers] spindle speed hall sensor magnet I'm having trouble securing a magnet onto a trim router spindle shaft for hall sensor rpm. I tried a 3m 2 part glue and a loctite kneadble epoxy putty, both blew up as i approached the 35000 rpm of the trim router. The control scheme works ( arduino with pid, pyvcp speed set and rpm meter, zero cross detector opto triac ... ) Does anyone have suggestion for securing the magnet on the shaft? Is glue a solution? This is all manual work, no machine available. Magnet is 5mm dia x 3mm high neodynium on a 10 mm shaft, between end bearing and brush. tia thx tomp _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
