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Type: Posts; User: rons

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  1. Replies
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    Your resistance is being measured with a low...

    Your resistance is being measured with a low level dc current. Failures can occur at higher potentials and you won't know why with a dc resistance check.
    Connect power and use a clamp-on amp meter...
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    609

    I had done this years ago with a 5Hp motor and...

    I had done this years ago with a 5Hp motor and noticed that the noise was reduced. It does not appear that the bearings would wear evenly and that
    if the orientation was changed to horizontal I...
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    456

    Are you referring to those small bricks that are...

    Are you referring to those small bricks that are 2.5 x 1.5 inches? Ganging 3 together on a hefty heat sink will take up some room. And will be a experiment that
    will probably turn out not so great....
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    569

    I use 4-40 or 2-56 button head allen screws. ...

    I use 4-40 or 2-56 button head allen screws.

    When the original steel rivet is driven in so hard that it dents the aluminium nameplate it makes taking them out so much more fun.
  5. Replies
    12
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    609

    There should be a wavy spring washer on the shaft...

    There should be a wavy spring washer on the shaft that exerts a force on one of the bearings. Usually it is between the back shell and the back end bearing.
    There might also be a straight washer...
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    Looks similar to what I use. Once the tool is on...

    Looks similar to what I use. Once the tool is on center to the work I find it easy to adjust the angle of the wheels. Set one then tweak in the other one.

    HARDINGE C30A KNURLING Tool ...
  7. It wouldn't be a bad idea if you could cover all...

    It wouldn't be a bad idea if you could cover all the controls with a hood held by magnets. A box with a door is better.
  8. No, you should have no regrets about a 3Hp. ...

    No, you should have no regrets about a 3Hp.



    Has Teco ever reimbursed somebody for a motor failure. That will be something to read about.
  9. Robert Sorby Sheffield, England

    Robert Sorby
    Sheffield, England
  10. Replies
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    2,322

    Here are some more guys. Mill Motor Runs on...

    Here are some more guys.

    Mill Motor Runs on Line Power 3P/240VAC But Not on VFD - Why???
  11. An inductance meter would show a difference in...

    An inductance meter would show a difference in the windings. If there was a gradual decrease in inductance and the current value was within a certain range then this problem would not be noticed at...
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    Would use a 1/8" piece of aluminium or brass in...

    Would use a 1/8" piece of aluminium or brass in the 1/8" collet and drill a hole through the size of your small piece. Now insert small wire.

    I have a few emergency collets that are plastic and...
  13. Replies
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    2,688

    Somebody I knew lived near a expressway in a...

    Somebody I knew lived near a expressway in a housing development with fairly new and modern homes. You could hear the noise from the road. I asked does that
    not bother you? I said that at night the...
  14. Replies
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    2,322

    The definition of power is P = V * I. The VFD is...

    The definition of power is P = V * I. The VFD is switching on and off in the bridge area to create whatever PWM waveform it is operating with.
    During transitions the change is not instantaneous....
  15. That was markz528

    That was markz528
  16. Replies
    9
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    3,432

    I heard John Wayne mention the name a few times...

    I heard John Wayne mention the name a few times...
  17. Replies
    19
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    1,339

    The mechanical drains I have experience with...

    The mechanical drains I have experience with operate open when the water level goes above a minimum level. Then the thing opens and everything blows through.
    What if the minimum level has not been...
  18. Replies
    19
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    1,339

    I attached a 90 connection to a drain port. Then...

    I attached a 90 connection to a drain port. Then extend out about 6" to a Asco valve. This will allow the tank to fully drain into the 6" pipe.
    No more puddles in the bottom of the tank. The Asco...
  19. Replies
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    1,701

    In the cause to save materials I use a small cup...

    In the cause to save materials I use a small cup to mix the paint and the hardener. Pour that into the gravity cup. Then add reducer to the small cup and swirl it around to mix with the previous...
  20. The owners manuals for welding machines say to...

    The owners manuals for welding machines say to wear safety glasses behind any helmet.
  21. Replies
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    2,322

    It's also a urban myth that people kill...

    It's also a urban myth that people kill themselves with their knives and forks.

    Your sample size is too small to form a normal distribution.
  22. Replies
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    2,322

    Describes what a square wave is, or a rectangular...

    Describes what a square wave is, or a rectangular pulse train. The edges of the pulses have huge spikes. The inductor has to deal with them.
  23. Is 1/10,000 sec good enough or should I look at...

    Is 1/10,000 sec good enough or should I look at 1/20,000 sec?

    To fit into a Jackson HSL-100B. This one is 1/10,000.
    Jackson Insight Auto-Darkening Lens 46128

    Or just get a new one. This one is...
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    2,322

    I think the category of uses will make a...

    I think the category of uses will make a difference.

    The VFD is running a motor on a air compressor which has intermittent use.
    The VFD drives a machine tool that is run more often and at many...
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    Agree, always inspect and then do the least...

    Agree, always inspect and then do the least amount of damage (metal removal) to make things work.
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