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If you can locate the right pulley and belt, the flat ribbed belt system that came with the motor is as good as any.
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Well i purchased a 3hp motor from a treadmill.
IM unsure how Im going to mount it . I was think of a 3 pulley cog gear set up.
Like Low Mid & High.
I mount it yesterday on three rubber feet it made so much of a difference like night and day . It took so much vibration out of it when I make cuts.
So my question is . If I mount this directly to the MT2 spindle what kind of belt set up should I use . It already has a ribbed pulley on it like the type you would normally see on a Power steering pump.
Cod style or V belt. I was going to use step pulleys from a wood lathe.
This will be my first upgrade Ive ever done so any help is welcomed
thank you ,
Anthony
If you can locate the right pulley and belt, the flat ribbed belt system that came with the motor is as good as any.
I dont think ide like to go that route . I want a 3 step set up. Or 2 .Originally Posted by knudsen
Im going to have to disassemble almost the whole upper half to get ot to work correctly.
Sorry, I read right past that. You might consider the "V" belts used in the "off the shelf" belt conversion kits like this one: http://littlemachineshop.com/product...gory=879658189
I bought a 3 jaw setup today . To turn out a pullet set.
I have an Idea in my head but I dont know what im doing at all lol.
How do I convert a stepper motor into horse power.
Lets say I bought a Nema 34 2200 oz stepper motor whats that = to be in hp?
Last edited by Arich0908; 04-10-2010 at 12:02 AM.
Roughly 0.00218hp! using the 'rough & ready' formula :
Torque x rpm / 5250 = hp.
Basically 2200oz/in = 11.46ft/lbs @ 0 rpm or doing it
@ max rpm say 2500rpm and 0oz/in (stalled) = 0.00248hp
So......................not a good idea!
Got to ask,
You can put all the power in the world to the spindle, but if the column is not strong enough to withstand the cutter pressures that will be generated without flex, it's going to be for not.
nothin a lil enginuity and a lot of metal couldnt fix
nothin a lil enginuity and a lot of metal couldnt fix
Just saying when you have more time and cost into a back support I-beam that the machine is worth to get the column rigid for starters, it may be time to step up to a larger machine.
Really think about it, your powering up the spindle to make some huge cuts with something like an 1 1/2" end mill at .060 thousand plus per pass on hardened steel, all while on a machine that has what, a several inches of feed at best (while the rest of the machine that has not also been upgraded will be screaming uncle as well).
Hate to say it, but sounds like trying to drop a big bock V-8 in a row boat so you can have some extra power to get across a very small pond.
1 to 1 1/2 HP, OK maybe a doable idea and will never have to worry about stalling the machine with the bits that the machine was designed to use, but 3HP, that going over the top a bit for that the machine was designed to do even in mod'd form (read can see the spindle snapping it two, or a bearing going south with that much power if you can get all of the powder down tranfered into the work piece)
They call the treadmill motors 3HP but I think that is a bit over rated. I have a 1/2HP 90 volt DC motor and it is twice that size.
It should be a nice upgrade and will give 3HP peak if needed but without the fan cooling it it will over heat. I bet you will get a real 1HP contous or more which is fine for a mill that size.
I went with a 500w 3/4 hp motor. I was in fear of the motor keep over heating. The fan on those are suppose to move in one direction. When i start using it in the opposite direction all my time money and hard work will go out the window when it over heats.
I stated this in another thread a few threads up,
Im sorry all my threads are a big jumble****. I should have started a new one.
I don't think you can apply that formula to a motor you don't have any torque/speed information for. 0.002 horsepower works out as 1.5 watts. For comparison, I have a few little 150oz-in steppers here, rated at 1500rpm max and 56W, which is about 0.07HP. These huge steppers should be ten times that!
The motor power formula does work on steppers, but you'll need to track down the torque/rpm curve for that model to get any sensible figures out of it.
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