Replacing ST50 masthead anemometer bearings -how to

[fearmhuir]

Does anyone here know the size of the bearings that are needed? I have to do a job on my ST50 unit, and would like to have the bearings there when I take the unit down.
Great thread!

 

[Yngmar]

Does anyone here know the size of the bearings that are needed?

S693ZZ bearings (stainless 3x8x4mm shielded)

 

[fearmhuir]

Thabks yngmar - most appreciated!

 

[Upnorth]

Sorry to resurrect an old thread, but just used the excellent advice on renewing the bearing. However it recommends renewing the O rings but there is no spec on their sizes. Does anyone know the sizes? One of mine is broken
Ta in advance,
Mike

 

[Laysula]

https://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItemVersion&item=132233132329&view=all&tid=1574123616003

These are the ones that I used.

 

[Upnorth]

Thanks:encouragement:

 

[Roberto]

https://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItemVersion&item=132233132329&view=all&tid=1574123616003

do they indicate the oring thickness/inside and outside diameter? I do not have access to ebay.uk..

thanks

 

[Upnorth]

Roberto,
Only diameter as 1.87mm. I guessed ID is probably 18.77mm. As they are very cheap I have ordered 20.35mm as well. Note these are imperial sizes. Also link is for EPDM rubber. If you intend to lubricate with grease use Niton/Viton rubber instead. Same ebay supplier offers both types of rubber.
Mike

 

[Upnorth]

Also available on french ebay
https://www.ebay.fr/itm/Imperial-Vi...var=441587042132&_trksid=p2057872.m2749.l2649

 

[Roberto]

Thank you very much Mike!

regards, r.

 

[Sol_Sailing]

Could someone post picures or tell me where to find them? Great thread btw