Drip Proof motor on cutting tools?

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Forum topic by ToddJB posted 659 days ago 637 views 0 times favorited 8 replies Add to Favorites Watch
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1972 posts in 761 days

659 days ago


I have some old delta tools with old under powered delta motors. I have the opportunity to buy a 1HP Dayton motor for $10 that I can put on my Bandsaw (currently 1/3hp) or Lathe (currently 1/2hp). I know the ideal is to put TEFC motor on these type of machines to keep the dust out, but the old motors are both vented and they still run fine. How big of a deal is TEFC? Am I waisting my time wiring it up and mouting the Drip Proof? If it is a big deal has any one made a successful sheild that allows air but keeps out dust?

I know little about this topic so any thoughts are welcome.

-- I came - I sawed - I over-built

8 replies so far

View Swyftfeet's profile


169 posts in 802 days

#1 posted 659 days ago

It’s piece of mind. The price point difference over the MTBF is a no brainer to get TEFC when purchasing new…

That said if you can get a deal $10 for 1 hp that will mount without any issues then your doing well enough to go thru 20 of them before you lose… for get the home made dust barrier, it will make it harder to blow out with your compressor.

Food for thought.

-- Brian

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Fred Hargis

1728 posts in 1124 days

#2 posted 659 days ago

I think you’ll be fine with OPD . My Delta contractor saw had one, and i used it 6-7 years (even after I boxed in the motor for DC) with no problems. My 5 HOP DC has one, as does my RAS. I think my Delta band saw came with one that I switched to TEFC when I upsized it. I sold that motor, so I’m going from memory. My Delta drum sander also appears to have one on it…no problems with any of them.

-- Our village hasn't lost it's idiot, we sent 'em to Washington.

View knotscott's profile


5422 posts in 2007 days

#3 posted 659 days ago

Blow the dust out once in a while, and it should be fine….we survived for decades with them before TEFC became the norm.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

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668 posts in 1068 days

#4 posted 659 days ago

What Knotscott said. Old motors are pretty damn durable.

-- Visualize whirled peas

View Loren's profile


7422 posts in 2279 days

#5 posted 659 days ago

I have had a lot of motors that weren’t TEFC and they hold
up ok. For $10 it is a good deal if it runs.


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1972 posts in 761 days

#6 posted 659 days ago

Yeah, this confirms my assumptions. Both of those delta motors were caked full of saw dust when I got them and were still working fine, but I didn’t know if they made them beefier back in the day to combat the dust, as to where newer ODP’s weren’t created to handle as much since the advent to TEFC.

-- I came - I sawed - I over-built

View runswithscissors's profile


907 posts in 656 days

#7 posted 647 days ago

Years ago I put a 1.5 hp Craftsman motor (220 v.) on my TS. It was the open/drip proof style. It did have a tendency to occasionally get a crumb of dust in between the contact points in the saw’s starter mechanism. I’d have to partially disassemble it to get that little crumb out before it would start up again. Happened maybe a half dozen times or so over a period of years. Otherwise, I never had any issues with that type of motor.

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1173 posts in 928 days

#8 posted 647 days ago

I don’t know why someone would say ‘skip the dust shield.’ should be pretty easy to take some heavy sheet metal and make up a simple guard to keep the heavier stuff out. Especially if the motor sits on a shelf under the tools themselves. I’ll take a ten dollar 1 hp motor any day of the week.

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