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Forum topic by ABrock posted 02-12-2015 02:44 AM 943 views 0 times favorited 6 replies Add to Favorites Watch
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ABrock

6 posts in 668 days


02-12-2015 02:44 AM

Topic tags/keywords: powermatic table saw help model 66

I found a powermatic table saw model 66 5 HP 3 phase for sale on Craigslist. The asking price is 850$. Is the a good deal? I will be using my garage as my shop and don’t know much about 3 phase units? Are they better? Is it imperative if I have a 3 phase motor that I will need a 1 phase converter to run it at the house? I am unsure what year it is but it is yellow. Any advice is appreciated. Thanks

Andrew


6 replies so far

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TheFridge

5765 posts in 953 days


#1 posted 02-12-2015 02:51 AM

its a good deal of you have 3 phase. Just pretty good after the cost of a converter and wiring plus the saw.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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ABrock

6 posts in 668 days


#2 posted 02-12-2015 02:56 AM



its a good deal of you have 3 phase. Just pretty good after the cost of a converter and wiring plus the saw.

- TheFridge

After looking at thesaw from pictures and talking to guy selling it who doesn’t know much about it either, it lookalike a converter is on it and the manual has pictures and instructions on how to make it a 1 phase w/ 3 hp. Does this sound right and still make this a good deal to jump on? The other thing is I do not have an extra 220v outlet. Do you know how hard it is to convert or would it be easier to just add a 220v to jawbreaker hix and wire in an outlet? Thanks

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MrUnix

4244 posts in 1666 days


#3 posted 02-12-2015 03:03 AM

If you don’t have 220V available, then it doesn’t really matter if it’s single or three phase… you can’t run it on 110V. Many people don’t like three phase.. but it has the advantage of a much simpler motor with really only bearings that need maintenance every 10-20 years or so to keep it going. Add a $200+/- VFD, and you get the advantage of soft start and electronic breaking among other things.

Cheers,
Brad

PS: After reading your second post, the seller may be correct.. if it’s really a 5HP 3-phase motor and you run it with a static phase converter to make it single phase, that reduces the power by about 1/3, so 3HP would be about right. I’m not real fond of static phase converters due to that loss in power, but many people prefer them because they are usually cheaper than a VFD and way less expensive than a RPC.

-- Brad in FL - To be old and wise, you must first be young and stupid

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TheGreatJon

296 posts in 700 days


#4 posted 02-12-2015 03:05 AM

If there is a little box on it that is doing the conversion and it will drop the HP down to 3 when run in single phase, that sounds like a static converter. It will work just fine. You get a little less power because the motor actually runs on single phase after start up. It can be harder on the motor, but if you’re not running it all day long it shouldn’t make a difference. A static phase converter costs about $100, and if it’s already wired up, all you have you do is plug it into a 220v outlet.

-- This is not the signature line you are looking for.

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,

2387 posts in 3014 days


#5 posted 02-12-2015 03:13 AM

I think it is a decent deal. I love our PM66 saws. I have in the past run 2 table saws that were 3 phase 3 hp Unisaws with a static converter and technically speaking there is some power loss but to the end user it is not noticeable. I still could not slow or stall out my blade during feed rate. Technically I only had 2 hp based on using a static converter on a 3 hp motor but I can honestly say that running that saw in that set up felt as if it were nearly twice as powerful as the 1 1/2 hp contractor saws I used to use when first starting out. So don’t be afraid of using a static converter, it will work great.

-- .

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MrUnix

4244 posts in 1666 days


#6 posted 02-12-2015 03:23 AM

Just another thought.. given the age of the machine and the sellers lack of knowledge about it, you really should, at the very least, replace the arbor and motor bearings. They may be fine, but I doubt the current seller has done any maintenance to it and it’s cheap insurance that will prevent much more expensive repairs in the future should they be bad or marginal. Belts may also need to be replaced depending on their condition. Something to keep in mind as the cost of ownership never stops at the initial purchase price. If you are comfortable doing the work yourself, then you can save some cash.. but if not, be ready to pay dearly to have someone else do it for you :)

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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