Posts: 9
Joined: Wed 18 May , 2011 9:12 am
Does anyone know how to access the spindle bearings? I think they're fine but I've run my Novamill for about a year and I'd like to check them over. I've tried taking the cover off the head but it wouldn't budge. Is it one of those things where you have to use a lot of persuasion?
CNC Guru
CNC Guru
Take a look at these. The Novamill head is similar to the Starmiil.
viewtopic.php?f=45&t=3628
viewtopic.php?f=45&t=3632
viewtopic.php?f=45&t=3628
viewtopic.php?f=45&t=3632
CNC Apprentice
Posts: 51
Joined: Mon 21 Nov , 2011 12:12 pm
Hardware/Software: My Novamill, bought in Nov 11 without electronics, is now up and running under Mach3 with a home-build control box. I'm very pleased with the machine, only project so far is correcting a cheap small machine vice originally bought for a vertical slide to use on the machine - not a right-angle in it when bought!
CNC Apprentice
I'm surprised that the cover wouldn't come off, what is stopping it? Just unscrew 8 button head capscrews and it should lift off - I had mine off only yesterday. Once it's off bearing access is obvious. As far as I remember on mine the cover came straight off without needing any persuasion, but I suppose the paints might have stuck a bit. Try a gentle biff with a soft mallet?
Posts: 9
Joined: Wed 18 May , 2011 9:12 am
Got it off. Thanks chaps. It did just need a tap with a mallet, it looked like it hasn't been off for a while!
CNC Apprentice
Posts: 73
Joined: Tue 19 Apr , 2011 8:38 am
CNC Apprentice
Hi, They are quite chunky bearings on the spindle but easy to remove. You can see the lower one just by removing the cover plate located on the outside of the head.
I changed mine as I was getting a strange knocking noise. Cost about £80 for a pair of angular contact bearings from simplybearings. I think the original ones were ok though just not preloaded enough as the preloading nut (slotted nut) was not that tight.
Just remember to remove the key before trying to tap out the spindle like I didnt...ha
Mike
I changed mine as I was getting a strange knocking noise. Cost about £80 for a pair of angular contact bearings from simplybearings. I think the original ones were ok though just not preloaded enough as the preloading nut (slotted nut) was not that tight.
Just remember to remove the key before trying to tap out the spindle like I didnt...ha
Mike