Electric Motor Problem

curiousgeorge · Post by **curiousgeorge** » Sat Apr 18, 2009 1:54 pm

My 10" table top drill press quit on me. The motor just hums when you turn it on and I believe it is the start capacitor. The problem is, I can not find a replacement capacitor anywhere. So, I thought maybe one of you may have an idea where to find such an animal. It is a CBB60.SH, 20 MFD, 250VAC, 50/60Hz. It's round with a 1 1/4" diameter, 2 3/4" tall and has two leads. Any help in locating a source would be appreciated.

beeg · Post by **beeg** » Sat Apr 18, 2009 2:23 pm

http://www.google.com/search?q=CBB60.SH&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

iclark · Post by **iclark** » Sat Apr 18, 2009 2:26 pm

curiousgeorge wrote:It is a CBB60.SH, 20 MFD, 250VAC, 50/60Hz. It's round with a 1 1/4" diameter, 2 3/4" tall and has two leads.

searching with google on
"CBB60.SH" capacitor
found
http://itemlistings.ebay.com/sdcsrp_ims ... 4001r34276

at the bottom of the page are 2 listings for a 50-lot of what sounds like what you are looking for (assuming that your MFD is microfarad).
one at BuyItNow for $25 for 50.

I know nothing about the seller.

FWIW,
Ivan

dusty · Post by **dusty** » Sat Apr 18, 2009 3:16 pm

You can probably get a suitable substitute at any good motor shop.

curiousgeorge · Post by **curiousgeorge** » Sat Apr 18, 2009 4:48 pm

Thanks for the replys, Guys! After I pulled my head out I finally thought to check on the tool web site (DUH) and, believe it or not, they had a replacement capacitor listed. The only thing is the part costs $6.99 but the shipping costs $8. Ain't that a kick in the a**? Oh well, I guess it's still cheaper than buying a whole new drill press.

SDSSmith · Post by **SDSSmith** » Sat Apr 18, 2009 5:08 pm

curiousgeorge wrote:Thanks for the replys, Guys! After I pulled my head out I finally thought to check on the tool web site (DUH) and, believe it or not, they had a replacement capacitor listed. The only thing is the part costs $6.99 but the shipping costs $8. Ain't that a kick in the a**? Oh well, I guess it's still cheaper than buying a whole new drill press.

Have you checked Grainger http://www.grainger.com? I have had luck getting start capacitors from them and it appears as though they have a store in Fort Worth.

robinson46176 · Post by **robinson46176** » Sat Apr 18, 2009 6:41 pm

How about we back up and start at the beginning on this one. Capacitors can and do fail but have we eliminated the possibility that it is the motor starter switch (usually a centrifugal switch) instead. A piece of sawdust between the contacts could easily give the same symptom. They often only need cleaning and don't always need parts. Do a little Googling on the subject looking for "how to" articles.
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The fact that you have a hum eliminates the plug, cord and on/off switch which are the first 3 steps in order. Next comes the starter switch then the capacitor.

robertk · Post by **robertk** » Sun Jul 05, 2009 12:35 pm

I have just given my Mark Vii a good cleaning. I brushed out dust, vacuumed and then used my air gun.

Everything was working well but then I couldn't get the motor to run.

I just get a hum. All the shafts turn easily.

In the thread above you mention that sawdust in the switch contacts can be a problem.

I am presuming that my "cleaning" - especially with compressed air, got dust on the contacts. How do I clean them. Do I take the switch out? Are there concerns I should have about shorts even with the power off?

fjimp · Post by **fjimp** » Sun Jul 05, 2009 2:30 pm

Sixteen years ago we built a new house. The propane fireplace had never worked properly. For fourteen years we paid various repair people to fix it. The last guy came sixty miles and charged me $85 just to show up. He sat on the floor for ten minutes and checked all electrical fittings and announced it was the flue switch. Further that he would need to order another. He began to disassemble the switch and we both watched a peice of sawdust fall to the hearth. He said do you suppose that was the cause? He reassembled it and we have never had another minutes problem from that fireplace.

I vote for checking out the switch.

No I was not upset to pay the $85 bucks. However I would love to get my money back from all the "experts" who were clueless. The option at that point was to replace the entire fireplace. many many bucks to do that. fjimp

curiousgeorge · Post by **curiousgeorge** » Sun Jul 05, 2009 3:03 pm

Thanks for all the suggestions. It was the capacitor. Once I received the replacement, it didn't take 5 min. to fix. Two wire nuts and screw the cover back on... just that simple. It now works like new.

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Electric Motor Problem

Electric Motor Problem

motor hum - switch contacts