[TowerTalk] Which Thrust Bearing to Use

[jimlux]

On 12/9/16 8:06 AM, charlie at thegallos.com wrote:
>>  >I would expect either
>>> tapered roller bearings, or today, do what most of industry does, and use
>>> an engineering plastic bearing.
>>

> I mean nylatron is practically begging for that use.  No elevated temps
> (folks reading - elevated temps here means greater than 50C on a
> continuous basis aka 20 hours at a time - and even then, if we go
> reinforces with either glass or Molly, you can go 75c - just in case you
> want to paint your bearing black and put in in the sun in the Mideast),
> "moderate" loads per square inch, low rotational speeds, no seriously
> significant shock loads.  Never have to worry about the balls indenting
> the races like the Ham IV, never have to worry about rust etc.  MFJ could
> get rid of the two steel races, the balls, the retaining rings etc, and
> have a better product for probably less money
>
> ______

And in 2065, there will be people on eham, or the equivalent, 
complaining how their MFJ rotator has cheap plastic in the bearing 
instead of good old steel forged from ....

There's a lot of 50 year old ham gear out there