It is currently Wed Aug 23, 2017 11:57 am

All times are UTC




Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Fri Jul 21, 2017 7:45 pm 
Offline
Member
Member

Joined: Mon Jul 17, 2017 9:18 pm
Posts: 2
I have aligned the XY mechanism carefully, but it is still stiff and doesn't move smoothly.
I couldn't see in the instructions anything about lubricating the XY linear bearings. The printhead bearings get a drop of oil as does the Z-axis threaded rod. Did I miss something? Is there a reason not to apply oil to the 8mm rods?

Grateful for advice as applying oil will be my next step unless there is a reason not to.


Top
 Profile  
 
PostPosted: Fri Jul 21, 2017 8:10 pm 
Offline
Senior Member
Senior Member

Joined: Tue Mar 27, 2007 12:24 am
Posts: 3431
Location: USA
Yes you should
You may also want to look at this link.
http://www.k8xxx-3dprinters.crimed.be/w/index.php?title=XY-Carriage_Alignment


Top
 Profile  
 
PostPosted: Tue Jul 25, 2017 3:44 pm 
Offline
Member
Member

Joined: Mon Jul 17, 2017 9:18 pm
Posts: 2
Thanks Wrong Way. I'd seen and implemented the carriage alignment; Also disassembled and reassembled the belts, pulleys, rods. Checked alignments etc pretty thoroughly. Then apply oil! What a difference, magic. All OK now.

Anyone: did I miss this step from the instructions or was this step simply missing? I've looked about five times.


Top
 Profile  
 
PostPosted: Tue Jul 25, 2017 5:36 pm 
Offline
Senior Member
Senior Member

Joined: Tue Mar 27, 2007 12:24 am
Posts: 3431
Location: USA
Glad to hear it's working.

I know I read about the oil somewhere but can't find it.


Top
 Profile  
 
PostPosted: Thu Aug 03, 2017 6:14 pm 
Offline
Member
Member

Joined: Thu Aug 03, 2017 6:09 pm
Posts: 1
These bearings should definitely not be lubricated. The iglidur bearings are "self lubricating". From the manufacturers FAQ (http://www.igus.co.uk/wpck/7823/iglidurFAQ#Section_8):

Quote:
An additional external lubrication with grease or oil is usually neither necessary nor practical.


If the XY carriage does not move smoothly, it rather is an alignment than a lubrication issue. I had similar problems and it turned out that the distance of the bearing assemblies at the end of the two rods was not perfectly chosen (they were two close together), so the rods and as a consequence the bearings were under constant stress.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group