MartinVi

Yes, sent them an email on March 18th, all I got was an auto reply saying that a ticket has been created and thats it.

As I wrote, it is not just backlash, that I was trying to fix. The whole worm gear was dancing around causing free play in RA axes even when gears wouldn't move You're probably right, dealer and manufacturer have not responded to my queries. I can only assume they order whole blocks to be made in China and don't have spares lying around Sounds good but I'm out in the sticks and have no connections to such workshops That is what I was about to do, but before I take any risks of messing up threads even more I decided to try a much gentle method - I'm not gonna share pictures, because I'm a bit embarrassed of the craftsmanship, but basically I discovered that using some well lubed spacers (perhaps later on I will replace them with a bearing) I can wedge the worm gear on its drive gear side so that on the other side where this retainer sleeve nut used to be, I only needed to find a way to hold the bearing in its place. Since this side wouldn't need to carry any load anymore I then manufactured a small aluminum tube that I hot-glued into its position to make sure bearing doesn't go anywhere. By exercising the mount/gears, so far its holding up nicely but I haven't had a chance to test for real as it is cloudy. I do suspect that friction between spacers and in general their imperfect shape will cause some issues, but we will see. In long term I'm looking to upgrade away from it anyway, so In short term let's just call it a learning exercise Thanks to all your inputs

Hello All, I'm an owner of Bresser Exos 2 goto mount. Like many others, I've also experienced problems with significant backlash and free-play on this mount, I decided to tighten things up a bit and basically destroyed a screw in process.. I was not expecting them to be made of soft aluminum, I tore the threads off clean. Attached are two images - 1st is the location of the said screw - basically it retains worm gear and its bearing in place. There was also a nut sitting on top of it. Second image is of the screw (retainer collar?) itself. The diameter is roughly 14mm.. I'm looking for any info that would help me identify it and order a replacement - if there's a DIN number or the proper English name for it, any help will be appreciated.