[TowerTalk] Thrust Bearing Installation

john at kk9a.com john at kk9a.com
Tue Dec 22 07:00:20 EST 2020

Great answer Scott. I would just like to add with some rotators such  
as a K7NV Prop Pitch, it is recommended to have the full weight on the  

John KK9A

Scott K9MA wrote:

Probably one or the other, not both. That's "overconstrained", which
means anything just slightly out of true can produce very large forces.
The easiest way is usually to let the rotator take the vertical load,
assuming it is within its rating.

Scott K9MA  (Who took Statics 101 something over 50 years ago.)

On 12/21/2020 3:51 PM, krgoodwin at comcast.net wrote:
> Installing a thrust bearing in a tower - Dead weight (along the gravity
> vector) all on the rotator or all on the thrust bearing?  Seeing such things
> as sleeves for towers, I would surmise that all of the dead weight is on the
> rotator and only off-axis loads (perpendicular to the gravity vector)  are
> handled by the thrust bearing.  I use two thrust bearings in my tower which
> I don't believe effects the answer to the above question.  Ken K5RG

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