Re: [amsat-bb] G5400B Elevation ballbearings size ?

[Bruce Nolte N3LSY <brucenol@xxxxxxx>]

Frank Viggiano wrote:

>Does anyone know what size the ball bearings in the G5400B Elevation rotor
>are? I want to order them before I disassemble the rotor again.I forgot to
>get the size when I had it down for inspection in the early spring....
>
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The bearings are 1/4  inch (.250) . I miked them out when I replaced 
them last year in my Azimuth Rotor, the ones in the elevation rotor are 
the same.  BTW, Norm's Rotator service has them for about $15.00/100, 
which is probably more than competitive with your local hardware store. 
IIRC it takes about 100 to do the Azimuth rotor and probably about 75 to 
do the elevation rotor. If you haven't already done so, check the 
Azimuth rotor as well, sometimes water gets trapped inside and causes 
premature corrosion of the bearings. A drain hole can be drilled or 
enlarged to help the situaltion, so take care. You may want to consider 
Stainless Steel balls if the rotor is in a hard to service location, 
(such as the top of a tower), but they are harder to find and will be 
more expensive. Use White Lithium Grease to reassemble the whole works 
and you will be fine.

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