Hello. We've been trying to find a source for clutch and brake disks for a metal lathe which is no longer supported. We finally took it apart and measured the disks. We are thinking about just having new disks cut on a waterjet machine, as there really doesn't appear to be any rocket science to...
I was recently looking for a cost effective linear quadrature encoder for measuring position of a press with a PLC. Basically I wanted something resembling a pneumatic cylinder, relatively rugged, with a straightforward quadrature interface. Absolute encoding would be a plus... Stroke needed is...
We have a Bullard 56" Dyn-Au-Tape vertical turret lathe (VTL). The automation (lol) was removed long ago and we just use it manually. We are considering replacement of the two drum controllers (drum sequencers) which apparently control acceleration of feed and traverse. I think they were made by...
Hello. We have a WMW Niles lathe, 32 x 120, which needs brake band and disk parts for the spindle brake. I am pursuing the parts with Simmons/Niles, but was wondering if anyone knows of an aftermarket source who makes these parts, or possibly can reline our parts (less desirable, since machine...
Hello.
My employer has a large "Sellers" brand planer/miller, what some might call an "openside" planer. It has a 48 inch by 20 foot table, with 40 feet of table travel. It's an old machine, but it's in pretty good shape.
We have no documentation on this machine and would like to talk to...
We have a large planing mill which is in need of some upgrades. It originally had a DC motor driving a multi-speed gearbox. Overall gearbox transfer ratio is selected by a series of multiple-plate clutches built into the gearbox.
Originally I was hoping to eliminate the gearbox entirely, but...
Greetings
My employer has buildings with Lithonia 400W metal halide lowbay lights connected in banks on 240V 3ph. While the nameplates say current at 240V is 2.0A, we seem to see more than that... enough that breakers are sometimes tripping even when (by calculation) loaded at no more than the...
Greetings.
Quite some time ago, I started a discussion about a customer situation which called for us to replace a big, nasty DC series field motor with gearcase, jackshaft, couplings, gearing with modern gearmotors, to move a machinery carriage.
Some readers opined that it would work fine...
Greetings!
We located a rebuilt 30hp shunt field DC motor for a customer to put on an air compressor which "kept burning up motors". Hmmmm. Upon installation, they reported it "runs way too fast" compared to its next door neighbor. They wanted to disassemble the motor and move the pole pieces...
Hello! Please pardon my ignorance in advance... I'm an EE, and my only thermo course remotely related to HVAC was at 8am 4 days a week :)
With increasing energy costs, I'm trying to greatly limit the amount of energy I use. My largest use of electricity this time of year comes when I turn on my...
Howdy! My employer has a portable center drilling machine which was called the "Tru-Cent'r DRILL" and made by Materials Research Lab of Glenwood, IL (associated with University of IL?). Please see attached picture. We found this item very useful for center drilling the ends of railroad axles...
Howdy, folks. Hope you can help me out as much as in the past...
I'm working on plans to convert several bridge cranes (only the bridge motions are involved here) from DC motors to AC with VFDs. I've had suggestions that I need to significantly increase total horsepower over the DC. I...
Need ideas for a way to quickly connect fairly heavy motor leads (up to ~2 AWG) for test purposes...
I like those little terminal strips for small wires where each one has a little lever you lift up to remove contact pressure. Does anyone know of a vendor who makes these in jumbo sizes?
Maybe...
Curious if anyone has applications info (probably historical in nature!) on choosing starting resistance values for series field DC motors. I am sure GE and Westinghouse once had notes on how to do this.
Eaton, SquareD (EC&M), Hubbell are all willing to quote controls for these as well as...
Howdy, folks!
Trying to find basic specs on a 1940s GE series field traction motor, model GHM-838-F1. Yes, they are still in use!
All I really know for sure is it is a ~250 Vdc motor. I would like to know its continuous horsepower rating and full load amperage. Every one I have seen has no...
Howdy! I recently completed a project using the Koyo/AutomationDirect DL05/06 PLC. I was quite impressed by their cost effectiveness (though the development software could be a tad cheaper, IMHO). One thing I found very useful was the "state machine" programming they offer. Coming from a non-PLC...
I'm looking at various (used) DC drives for use in a motor test shop. A typical example is the A-B 1395. I'm also seeing a lot of big GE drives on the used market. I haven't found much applications info on any of these drives and am unclear whether they will typically support series field motors...
I've been asked (one day ago!) to think about ways to cost-effectively give a small motor shop the ability to test run a variety of AC and DC motors, probably 10-100hp. Because of cost limitations, I'm going to say these would be "no load" tests only. It would be ideal if we could find some used...
Howdy. I'm an EE who has worked in the design of industrial control products. I'm now looking at the application of these products in some power designs. Please pardon my ignorance due to this fact!
I'm looking at a control panel for a machine (pump) which has a 100 hp electric motor, 3 hp...
