RE: Quil Bearings.

> -----Original Message-----
> From: Paul Corner [SMTP:Paul.Corner@...]
> Sent: Monday, January 10, 2000 5:55 PM
> To: CAD_CAM_EDM_DRO@onelist.com
> Subject: [CAD_CAM_EDM_DRO] Quil Bearings.
>
> From: Paul Corner <Paul.Corner@...>
>
>
> A quick Question for the machine tool experts.
>
> How much radial play if any is acceptable in the quil bearings ?
>
> I had a DTI on the side of the collet chuck, and got a reading of one thou
> or
> 0.025 mm. Could it be my bearings are on the way out, if so, the EMC
> upgrade
> will have to wait until I've recovered from the fee Bridgeport will charge
> - I
> doubt it will be cheap.
>
> Regards, Paul.
>

Did you have the indicator clamped to the quill or to the head? The
quil in a bridgeport can deflect in its bore by that much. You might have
been measuring quill-to-head play and not bearing play. Just a guess.

Doug