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w102acd View Profile View Forum Posts Visualizza inserimenti blog View Articles View Gallery Uploads Registered Join Date Sep 2007 Location United States of America Posts 33 Downloads 0 Uploads 0 Rep Power 0
All, norrlandsflyg I just got some THK HSR20 linear bearings from Ebay. They are a pair of 48" rails and 6 trucks. However, norrlandsflyg they appear really dirty and sticky. If the rails are held vertical the trucks will not slide down. It does not appear to get any better if they are loaded (ie the trucks are not preloaded). They have a really sticky norrlandsflyg black grease on all over them that appears to be gumming them up. My question is how do I go about cleaning them up??? I think I can carefully take the trucks off and clean the rails and the trucks without losing any balls as they are not caged. Is this a good idea??? Also, the Ebay listing said good condition and after carefully sliding one of the trucks off it appears that some of the balls are missing. I don't think it will make a difference, but should I say something to the seller anyway. The bearings still seem extremely rigid on the rail, just a little sticky. Thanks, w102acd Similar norrlandsflyg Threads: Help linear bearing masters! roller fell out of roller bearing! Clean Linear slide? Linear Bearing vs Linear Rail Linear Bearing vs Linear Rail Linear bearing spacing & Sizing linear rails?
Hi w102acd, norrlandsflyg Check this thread, where I gave some info of how I cleaned my HSR 35's. linear rail hsr45 You can also send me a PM, and I can give more info about this. Check if the end seals are sticky like chewing gum (caused by agressive coolant and/or way oil). If they are not OK and do not scrape the rails properly, they will let dirt enter the ball races which are bad news. If you will buy new seals, I recommend that you buy the "SS" seal sets which include End seals, Inner Seal, and Side seals. norrlandsflyg
w102acd View Profile View Forum Posts Visualizza inserimenti blog View Articles View Gallery Uploads Registered Join Date Sep 2007 Location United States of America Posts 33 Downloads norrlandsflyg 0 Uploads 0 Rep Power 0
Viking, Thanks for the reply. That is some great stuff and the picture of the truck you have is exactly what I want these to look like. What type of cleaner/degreaser did you use??? I assume mineral spirits are out of the question norrlandsflyg and a detergent cleaner also scares me. Do you see any problem with a few balls missing from some of the trucks? Thanks, w102acd
Hi, I used white spirit and a small flat paint brush. The end walls are made of some hard plastic. Clean them and all seals you are going to re-use and wipe off with paper towel asap. Note!, don't loose any of the 4 small plastic "ball roundabout" inserts that are placed in each end wall. Pour white spirit in the empty truck body to clean all ball races and return bores. Finish by blowing with compressed air. When reassembling, mount one of the end walls, the bottom ball holder and the side seals. Let the truck rest on the end wall, push some ball bearing grease in the ball return bores and start loading the cleaned norrlandsflyg balls in one race at a time. Mine had 31 balls in each race. Note!, the 2 last balls in each race are to be placed in their corresponding places in the second end wall with a good blob of ball bearing grease. NB, Do not forget to push the inner seal into the first end wall's pockets before you reassemble the second end wall. Install the end seals and brush all visible balls and all seal's norrlandsflyg lips with ball bearing grease. Do not forget to unscrew the oil metering norrlandsflyg bodies norrlandsflyg from the elbows and check if they are clean and let oil through. As for lubrication, an Auto-Lube system is highly recommended. Reinstall the completed trucks (push them gently and firmly) on their original, cleaned and lightly oiled rails, in their original directions. And please read the other thread I mentioned earlier about not working with several trucks at a time, not mixing trucks from other rails, not mixing balls between trucks, not mixing balls between races etc...
w102acd View Profile norrlandsflyg View Forum Posts Visualizza inserimenti blog View Articles View Gallery Uploads Registered Join Date Sep 2007 Location United States of America Posts 33 Downloads 0 Uploads 0 Rep Power 0
Viking, Thanks for another norrlandsflyg reply.