>>.. but, beware .. ya gotta get a T H R U S T bearing
I am getting at the phase in my tower assembly to install the mast and
wonder if a thrust bearing is really necessary. My installation consists
of an Orion 2800 rotator which specifies a vertical load capacity of 1800
pounds which exceeds the actual vertical load about 8 fold. The tower
has an 8-inch tight fitting collar at the top that the mast slides into. It
requires two people to jiggle and push the mast down through the
Although this collar is a tight fit, the bottom of the mast (when not
bolted to the rotator plate) does move horizontally when the top of the
mast is moved, I have a difficulty in believing that a thrust bearing
above the collar would be of much benefit for the horizontal load.
However, I have no experience with this size of rotator/mast/antenna
and will appreciate those who have had experience.