Baldor 612 6" Bench Grinder 3600 Rpm Stamp Steel Logo

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Posted on May 06, 2011
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My grinder starts slowly and takes time to build up to speed. It is a model 612 and does not appear to be a capacitive start motor. All I can see under the base plate is a relay. Thanks for your help. James Smith

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Kelly

Kelly

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  • Master 3,740 Answers
  • Posted on May 06, 2011
Kelly
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Hi and welcome to FixYa, I am Kelly
Inside your grinder either the stationary switch or the rotating assembly that actuates the stationary switch has failed.

Download this pdf file:
http://www.baldor.com/pdf/literature/CA506_0806_WEB.pdf Then go to page 9

The rotating assembly is this part number: (most common failure)
34RS2060SP

You must remove the end plate / cap to change this part.

The statonary switch rarely fails unless the rotating assembly damaged the contacts when the rotating assemble failed. When the rotating assembly fails you often find a spring and flyweight loose inside the grinder during disassembly. Should your stationary switch have failed try and get a number off of it so you can get the right switch. Otherwise you have to use NEMA code / Body type numbers.

Thanks for choosing FixYa,
Kelly

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