Or from the servo drive suppliers. In China you can get good quality aviation connectors for like 7usd.
That's what I use and I buy cable from them to. I have a guy that buys it all up for me and ships from one place. On Thu, 4 Nov 2021, 21:20 Chris Albertson, <albertson.ch...@gmail.com> wrote: > I bought some of the proximity detectors for my 3D printer to measure the > bed. I tested them on my mill by moving them untillthey tripped, backing > off and doing it again to see how repeatable they are. Even the cheap > no-=brand unit where as good as my ability to measure them. Set up a test > using a dial indicator. > > The absolute trip point was some random distance, all you care about is how > repeatable they are. > > The one I liked is mounted in M12x1 threads. I bought am M12x1 tap to make > a mounting block > > The usual connector is called an "Aviation Plug". they come in different > diameters and with different amounts of pins. The smaller size is enough > for signals and the larger ones can handle motor current. They come in > different quality levels too. The cheap Chinese ones are "good enough" but > the American ones are precision made and have rubber gaskets. Prices are > about $3.50 for the cheap ones (on eBay or Amazon) and about $35 for the > best quality ones (at Mc Master Carr and the like). > > The cheap plugs are made of something like chromed zinc and look cheap but > work surprisingly well. The best one are made of machined an > green-primmered aluminum and have the quality you'd expect for an $80 per > mating par part. They are also sold with engineering-grade plastic > housing > > On Wed, Nov 3, 2021 at 10:01 PM Ralph Stirling < > ralph.stirl...@wallawalla.edu> wrote: > > > I have finally started stripping out the control cabinet on my cnc mill > in > > preparation for my retrofit. The brushed servos and mechanical limit and > > home switches were wired up with crimped "bullet" quick connect pins. > I'm > > replacing the servos with brushless servos, and am considering replacing > > the mechanical switches with inductive prox sensors (pnp, nc type). All > > the old wires are sticky with coolant and metal chips. > > > > So, I am interested to hear what other lcnc retrofitters have found works > > well for modest priced coolant proof connectors (3 or 4 pin), and > opinions > > on cheap Chinese prox sensors (since the name brand ones are so > expensive, > > even on ebay). An example is: > > > https://www.ebay.com/itm/US-5Pcs-NC-PNP-LJ18A3-8-Z-AY-Inductive-Proximity-Sensor-Switch-DC6V-36V-/143861840692 > > > > Photos (rather unorganized) of the retrofit are at: > > https://photos.app.goo.gl/yBSRVf3QAVUK39PC7 > > > > Thanks, > > -- Ralph > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > -- > > Chris Albertson > Redondo Beach, California > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
