Author Topic: Bolton 12x30 has the shakes  (Read 42 times)

Jake Parker

Bolton 12x30 has the shakes
« on: November 07, 2018, 08:51:37 AM »
As the title implies, my Bolton 1230 has a vibration problem.
It has creeped in slowly, and now its affecting the finnish during a cut.
The bearings are tight (no back and forth@ the chuck)
Also the mounts are tight both at the machine and the floor.
Do any of you have a sugestion as to what to check before tearing into the head stock?
Thanks in advance.

4GSR

Re: Bolton 12x30 has the shakes
« Reply #1 on: November 07, 2018, 10:27:22 AM »
Get a stethoscope and try to pinpoint the source of the vibration if coming from the head stock. If the drive belts are flopping around, pull them and buy a new set, install and see if that helps.  If you tighten the spindle bearings too much and still causing vibration marks on the work piece, you may have trashed the bearings. Gearing can cause issues too.  Ken
Ken

Jake Parker

Re: Bolton 12x30 has the shakes
« Reply #2 on: November 07, 2018, 05:06:47 PM »
I will check the belts this evening.
I havent touched the bearings..... yet.  ;)

kvt85

Re: Bolton 12x30 has the shakes
« Reply #3 on: November 07, 2018, 05:14:19 PM »
One step at a time,   If you can take the belts off,   Run the motor,  if ok,  PUt the first belt back on.   Run that,   THen move to the next spot.   
Run with the gears off,   see if you have a problem in the drive,   put back in one piece at a time.   And like the stethoscope idea as well.   They can help pinpoint all the way down to a bearing grumbling.  I had a bad bearing and a bent shaft in the Quick change gear box.   Was causing problems with finish.   Redid the shaft and put in new bearings and looked and worked a lot better.   
Ken in SA TX

Jet 10x24 and Taiwan 10x24
Enco 30 mill
Sherline Lath and mill