The second, lower, thrust bearing is VERY handy when you need to remove the
rotator without first removing all the antennas on the mast above the top
thrust bearing.
Ed W0YK
Mike W0MU wrote:
The top one. There is very little chance that you can line the two
bearings up perfectly. I don't think you want to tighten the lower
bearing. I don't think you need the lower bearing. The bearing plate
should be sufficient.
On 4/10/2014 2:46 PM, Mike Fahmie wrote:
> I'm about to raise a 72' US Tower equipped with a pair of TB2US thrust
bearings spaced about 3'. I'll be using a TailTwister2 Rotator. Is there a
procedure for centering these components to preclude binding?
>
> I doubt there is a way to make the two bearings share the vertical load,
so which one should I choose. I'm thinking that the top bearing should take
the load and use the lower bearing to stabilize the mast laterally.
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