Hello everyone,
I am in the process of tuning my Explore Scientific Exos 2 mount with the hope of improving the guiding enough so that I can switch my
Samyang 135F2 for my Sharpstar 76 EDPH which has considerably more reach ( 342mm ) and weights a bit more.
I have already polish the mating surfaces which made a significant difference when balancing the RA axis and now it is time to change the roller bearings.
For what I can see, they are cheap generic roller bearings, unbranded, and I can feel some friction and roughness when turning them by hand, so I expect some improvement by switching them for better one.
Following the advice on this post:
https://espmc-eight.groups.io/g/MOUNTS/message/518
I've alrealdy order hybrid ceramic bearings for the RA worm gear bearings.
But now I am wondering if I need to change all the bearings for ceramic ones, especially considering that these are costly.
So my questions are :
Are ceramic bearing worth it ?
If stick with steel ball bearings, what brand should I choose ? I was thinking of SKF
The orignal ones are "Z" bearings, they have protection against dirt, like this one : https://www.123roulement.com/roulements-6809-ZZ
Is it an issue to change them for "2RS" like these one : https://www.123roulement.com/roulements-6809-2RS-SKF
The reason being that I can't find "Z" one's from SKF
And lastly, do you have any advice one the grease to use ? I have some generic universal lithium grease, but it feels rather thick.
Thank you
Pablo
I am in the process of tuning my Explore Scientific Exos 2 mount with the hope of improving the guiding enough so that I can switch my
Samyang 135F2 for my Sharpstar 76 EDPH which has considerably more reach ( 342mm ) and weights a bit more.
I have already polish the mating surfaces which made a significant difference when balancing the RA axis and now it is time to change the roller bearings.
For what I can see, they are cheap generic roller bearings, unbranded, and I can feel some friction and roughness when turning them by hand, so I expect some improvement by switching them for better one.
Following the advice on this post:
https://espmc-eight.groups.io/g/MOUNTS/message/518
I've alrealdy order hybrid ceramic bearings for the RA worm gear bearings.
But now I am wondering if I need to change all the bearings for ceramic ones, especially considering that these are costly.
So my questions are :
Are ceramic bearing worth it ?
If stick with steel ball bearings, what brand should I choose ? I was thinking of SKF
The orignal ones are "Z" bearings, they have protection against dirt, like this one : https://www.123roulement.com/roulements-6809-ZZ
Is it an issue to change them for "2RS" like these one : https://www.123roulement.com/roulements-6809-2RS-SKF
The reason being that I can't find "Z" one's from SKF
And lastly, do you have any advice one the grease to use ? I have some generic universal lithium grease, but it feels rather thick.
Thank you
Pablo
