All 4 carriages are the HSR25 type( although 2 have silver bodies and the other 2 are black). I have tried runnning the bearing on the both rails with the same result. One of the black carriages runs very smooth with .75lbs of force while the other runs rough and requires 4.75lbs(This is very rough using kitchen scales). The other silver bodied carriages run smooth but one requires 2.5lbs and the other 4lbs.
From a visual inspection all seem to have used the same grease. I thought this type was already preloaded and is their any easy way to fix the friction problem, excluding brinneling?
I only intend using the best 2 anyway but was just curious.
I appreciate the help thanks. |