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Knowledge You Can Build On — Est. 1998

Bad Bearings?

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Bad Bearings?

#1

Bad Bearings?

Pete in NJ

>I've been lurking here for awhile now absorbing many great tips and ideas. Thank you all for passing on this wealth of knowledge and inspiration.

Last November I got a Jet 1236 and have been trying to teach myself turning through reading and trial and error. I been mostly working on free green wood roughing out bowls. This weekend I was having trouble getting the bowls to be round. I remounted the blank in the chuck (Oneway Talon). Tried taking very light cuts and scraping. Increased the speed and I thought the lathe was going to walk across the floor.

Finally, I broke out the dial indicator and measured runout on the flange of the spindle. It was about .005 turned by hand and .01 if I ran it at the lowest speed.

What would be the best course of action to take at this point? Any suggestions or tips would be greatly appreciated.

Thanks, Pete

Re: Bad Bearings?

#2

Re: Bad Bearings?

Ron in Drums PA

>Add some weight by placing a shelf between the legs. I have about 200# added to mine.

Re: Bad Bearings?

#3

JL

Re: Bad Bearings? - Try ballast

JL

>Second the above recommendation. Build a ballast box to suspend between the side supports. Place multiple sealed bags of sand, gravel or whatever in the box. Cover with suitable cover - turn well.

Re: Bad Bearings?

#4

Re: Bad Bearings? - Try ballast

JamieDonaldson

>And reduce the speed- many beginners crank up the RPM's way too far.

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