1. #1
    Quick question here. I have the two used rails shown in the picture along with the four bearing blocks. No use for them so I thought I'd offer the pair for sale, but I noticed that the linear bearings have significant movement axially on their own. What i mean is, if I grab a single block I can rock it quite noticably length-wise ont he rail. If however I put a pair together they become nice and firm, there's no radial play that I can detect by hand. Is this normal or does it indicate significant wear?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	roundrails.jpg 
Views:	343 
Size:	57.7 KB 
ID:	7101  

  2. #2
    Not sure about the bearings. There certainly shouldn't be radial play.
    More interestingly, what motor is that as it seems to have an encoder?
    Old router build log here. New router build log here. Lathe build log here.
    Electric motorbike project here.

  3. #3
    It's a 3-phase stepper. It has no encoder, though it has the facility for one.

Similar Threads

  1. Which way round to mount a FK12 bearing ?
    By EddyCurrent in forum Lead Screws, Nuts & Supports
    Replies: 6
    Last Post: 03-03-2014, 09:26 PM
  2. round rails
    By wilfy in forum Rails, Guideways & Bearings
    Replies: 51
    Last Post: 01-11-2012, 01:10 AM
  3. FOR SALE: 25mm round rail bearing blocks
    By D-man in forum Items For Sale
    Replies: 1
    Last Post: 31-10-2011, 09:26 AM
  4. THK linear bearing rails
    By Tonyel in forum Rails, Guideways & Bearings
    Replies: 0
    Last Post: 01-11-2008, 03:21 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts