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IndustryArena Forum > MetalWorking Machines > Benchtop Machines > Tapered roller bearing runout on mini lathe

Thread: Tapered roller bearing runout on mini lathe

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  1. 05-19-2015, 08:36 PM #1
    zoltank
    zoltank is offline Registered
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    Tapered roller bearing runout on mini lathe

    I know replacing the stock bearings in the mini lathe with tapered roller bearings is a popular upgrade, and one I'm looking at right now.

    However, my research shows that the commonly available 30206 tapered roller bearing is the basic grade K which has a total indicated runout of 0.0007", or over twice that of basic ABEC-1 ball bearings. I just wanted to see how people are dealing with that, or if you're actually searching out and buying high grade bearings (grade C to make a noticeable difference).
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  2. 05-19-2015, 09:08 PM #2
    hub
    hub is offline Registered
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    Re: Tapered roller bearing runout on mini lathe

    I had tapered roller bearings in my spindle. Had some run-out.. I changed to angular contact bearings and the run out was a lot less. Can't remember by how much anymore..
    If you can live with the run-out, leave it as is. If not, get higher grade bearings.

    Hub
    Current build: http://www.cnczone.com/forums/diy-cnc-router-table-machines/264838-new-machine-desing-quot-cnm13-quot.html
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