Glide bearing comparison

I’m comparing the linear glide bearings from Igus to a typical glide ball bearings. They are Ø30mm bearings and I’m trying to use the "Drylin" bearing RJM-01-30 in my linear SFX-100 actuator. The main focus is smooth and quite operation .

[@user-dc3pd7us6e]

Thank you for the comparison! Do you know if the polymer bearings will have a shorter lifespan than the metal bearings?

[@luigibonellifux1513]

Hello.I watched this video of yours with interest. I am about to make actuators similar to those of the sfx-100 project but with a 90x90 profile. I wanted to know if you think Igus bearings such as this or www.igus.it/product/1185 I can use this instead of the LMEK30UU bearing. for fixing it is not a problem because for example this www.igus.it/product/990 has an external diameter of 45mm and fits perfectly inside the 45x45 aluminum profile. What do you think about it?

[@vwkrebs]

I’m using also a 9090 Bosch Rexroth profile for my SFX actuators. As for the linear guide bearing I’m using a Igus RUM-01-30 ( for a Ø30mm shaft ) cut in half ~32 mm long. OD Ø47mm. ... pressed into the bottom plate and for good measures a M4x20 set screw from the side .

[@luigibonellifux1513]

@@vwkrebs Thanks for your reply.Does the igus RUM-01-30 linear bearing have the same robustness and load resistance characteristics as the LMEK30UU metal ball bearing? I mean ... if well inserted into the profile can it replace it without problems and moreover with the great advantage of being quieter?

[@vwkrebs]

@@luigibonellifux1513
Yes you can replaced it ... no problem. But there is virtually no wear on the bearing . It will last a very long time .

[@Trigenetic]

@@vwkrebs Do you happen to have an STL for inserting these to the SFX 100?