Well, this is fine kettle of fish, Ollie!
First off, thank you EdStainless; I'm very glad to know that the magnets are probably ferrite and therefore OK. The prospect of remagnetization would have unquestionably led to the motor's status being reassigned to "boat anchor".
As to the...
The three images below show the rotor of a Fanuc Servo Motor Model O, Type A06B-0513-B002, originally built in 1987. I do not know what material the permanent magnets are made of, but I don't think the rare earth magnets were in wide commercial use yet in 1987. As you'd expect, the raised...
Some of the manufacturer's literature is pretty unclear on this point. During my looking around, I found several references to PSC's with 3-phase windings. This is the only one I can lay hands on right now: see page 10 of this document:
http://www.filcap.de/pdf/General%20Information.pdf...
Thanks very much, IRstuff!
The eyepiece barrel is threaded, so the focusing is done by twisting the entire eyepiece. There is no writing of any sort on the eyepiece: no manufacturer's name, no "power" of magnification, nothing.
I feel like I should be able to tell the CCD vendor more...
I have a Hilger and Watts TA-6 autocollimator that I use for measuring flatness of machine beds. My eyes get very tired looking through the autocollimater, so I was looking at possibly replacing the existing eyepiece with one of these CCD eyepieces and looking at the image on a computer screen...
I'm sorry it has taken me so long to get back to you all on this question. I've spent a lot of time looking into your suggestions, but I really should have gotten back to you sooner. I'm sorry.
ScottyUK, itsmoked, and betrueblood:
We've just concluded a series of acrimonious meetings about...
Scotty,
You are certainly correct, thank you! I have only single-phase available, but I've used the trick of 50% derating a small VFD and using it as a single-to-three phase converter in the past with good results.
My fault: I neglected to include that I've been asked to have no silicon in...
I need to select a 1/2 HP motor. The basic service is 1740 rpm, single-speed, 120/240 VAC single-phase, runs 8 hours/day, lightly loaded at 20% capacity except for intermittant 1% duty cycle 2-second long requirements for up to 80% capacity. The motor will be face-mounted into a 30:1 worm gear...
Moltenmetal and UncleSyd,
Thank you very much for both the safety reminder and the links and descriptions of instruments!
After looking around the sites and talking to a few tech support people, I think I'm going to end up with the Draeger tubes. It seems like a simple system, no...
I am looking for a sensor or analyzer to measure ozone concentrations in room air. The "ozone marketplace" seems to have more than its fair share of snake oil. I want to find the ozone concentration in ppm while running a new piece of equipment we're building, so I really only need it for a...
Greavis,
1) SReid's suggestion above to look into Halbach Arrays is a very good one. In a Halbach Array, many small magnets (instead of one large magnet) are assembled together in a pattern of orientations that effects cancellations on one side of the array. You end up with something...
Wonderful! I did not know about wave springs, but they are just the thing for this application.
Thank you very much for the excellent suggestion!
David
I would like to ask this forum's advice on a problem. I have a rectanglar brass slide, 5/8" x 5/8" x 3". The slide fits into a matching cavity with a tolerance of 0.002". The slide is free to move along its long (3") axis for slightly less than 2 inches of travel; being constrained at both...
