View Full Version : Spindle bearing replacement

05-08-2003, 08:34 AM
I have a Bridgeport copy, an Induma vertical mill. I would like to replace the spindle bearings. Is this something that I could do myself, or is this something that is best left to the professionals? Is there a company that I could send the spindle ass'y to for replacement? Thanks.

05-08-2003, 11:57 PM
Ya do it your self,If it is a b-port clone then the tear down should be the same.The first thing you would want to do is swivel the turrent so the spindle is clear of the table,knee,etc.look at the left side of the head at the quill pinion there is usually a cover that encloses the return spring,carefully remove it by removing the screws,there should be a allen cap screw in the center of the pinion,if there is remove it,the pinion should be able to slide out of the right side of the head,but be sure and support the quill so it doesn't fall,you can use the quill lock to do this asuming you have one .Next slide the quill down and out of the head casting,its longer than you might think so you might need extra hands.Once it is out lay it on the bench and examine the splined end,it should have a spanner nut and a lock ring at the top of the quill housing ,bend the tabs of the lock ring out flat and remove the lock nut with a spanner wrench,remove the spanner,then there should be a second spanner nut that must also be removed,then on the spindle nose end there should be a large spanner nut threaded internally into the spindle housing,it is usually locked in place by a small setscrew drilled in radially close to the end of the housing,remove it,then unscrew the spanner,next use a hammer and a block of wood to tap at first on the splined end of the spindle and then if it doesn't move gently knock the hell out of it,with the wood for a cushion you won't hurt it,once the spindle is out of the housing you should be able to see the bearings the rest is self explainatory.P.S.you can usually find your replacement bearings on EBAY for a lot less than new shelf price.

05-09-2003, 04:03 PM
I can't vouch for the Weird One's details of diassembly, but his philosophy is impeccable!

Get your self a good illustrated parts break down, make sketches, use magic marker to mark EVERY part as you remove it, put parts in seperate cans and write what the cans hold and you can do it several times for what one re-build would cost. By several times , I mean if you mess up a part you can buy it again and again till you get get it right. And when all is said and done, you will KNOW more than before. Any one smart nuff to ask if it can be done is smart nuff to do it. Its those who take it all apart and put the parts in a basket that need to pay to have it done. Have at it!!!! Comments Alistair? http://bbs.homeshopmachinist.net//smile.gif

05-10-2003, 03:28 AM
Uh oh...

[QUOTE]Originally posted by docsteve66:
[B]snip> Its those who take it all apart and put the parts in a basket that need to pay to have it done. <snip

05-10-2003, 08:45 AM
I know nothing about these people, I picked up their card at an EASTEC show a couple of years ago, but for what it's worth:

Northland Tool & Electronics
Spindle Rebuilding Specialists
117 Gould Rd
Weare, NH 03281


1212 N. Divisiion St
Pontiac, IL 61764

05-10-2003, 02:32 PM
ABN: the real hard ones to fix are the ones where guy took it apart, put parts in a box, then took simular parts from a simular machine and added to the mix because "these parts might be of use, hate to buy new parts if the old ones will work a year or so- cause I don't really use this thing very much any way, I just have this one important thing to do and probaly won't turn the machine on for a long time afterwards- could we get it put back together tonight?"

We did!!! My jaws were torqued though. Dern near bit pipe stem into! http://bbs.homeshopmachinist.net//smile.gif happened this year.