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Bosch and Scheeberger both offers metal plugs. I assume most linear rail mounting holes are same size that you can use these on other manufactures rails too. I haven't done it personally so i can't...

I see. well, maybe you can buy some other manufacture's caps. everyone makes them and the rail hole sizes are all the same. some european manufactures makes them in metal with rubber o-rings if you...

unless each components are interchangeable type, trying to use random pieces from preassembled sets won't guarantee proper fit. these are built to have only few microns of clearance or with preload....

open type blocks can take side load. only when it is reverse radial load pulling the block away from the rail, load capacity decrease by about 50%. I wouldn't know about cheap chinese knock offs and...

ball guides can get damaged rather easily with hard chips jamming into the track. Protection and proper lube maintenance will go a long way to have designed product life.

Bosch, INA, SKF,...

in reality, 20 micron positioning accuracy without feedback of linear screw is not easy to achieve without ground ball screw. Repeatability will be easy to achieve but not the positioning accuracy....

why don't you just hammer it in. it can't go deeper than the rail surface unless you are poking it in with something smaller than the cap.

Nice article.

I had some issues with ball screws in the past and it was on bearing journal end and a lock nut. If you spend money on angular contact bearings for bearing support, you need to make...

i assume you are going to use open type bearings with support rail.
H7 or J7 are pretty common for this type of housing bore.
some housings have slot with thread on it so you can adjust the radial...

Zimmer has round shaft clamp called HKR
http://www.zimmer-gmbh.de/index_en.php?page=products&flash=klemmelemente_manuell
not sure who is the rep for them in US.

linear bearings are just like radial bearings.
do you replace only balls in radial bearings? no you wouldn't because if balls are worn out, raceway where balls run will be worn out also.
just like...