[TowerTalk] Request for replacement bearing information for tower raising fixture

[charlie at thegallos.com]

Is it a needle or a ball bearing?

https://www.amazon.com/K8-12-10-Consolidated-New-Needle-Bearing/dp/B01JVGV7AU

https://www.hendersonbearings.co.uk/k8-ball-bearing-brand-skf.html

If you have a local bearing supply house, you can take it there, they 
will tell you what you need

Interestingly, we are back to one of the BIG issues from the early days 
of ball bearing - failures of bearing that rarely move, out in the 
weather, under heavy load

Bronze bearing remained in common use in that situation for a LONG time, 
but need an oil reservoir.

My pet thing - again, is this is where the PROPER use of plastic bearing 
materials would probably be the best thing.



On 2019-05-25 20:27, Kim wrote:
> Scotty,
> 
> Contact Ray at isheaves.com
> 
> He's working with several hams to line up a run of pulleys to meet our 
> needs.
> 
> 73, Kim - WG8S
> 
> 
>> On May 25, 2019 at 2:49 PM Scotty <scotty at ashiko.com> wrote:
>> 
>> 
>> I have a US tower TX-455 that tilts over.
>> 
>> The bearing in the top of the raising fixture's sheave needs 
>> replacing.
>> 
>> The matching sheave on the tower has the same bearing and is still in 
>> good shape.
>> 
>> I can press out the old bearing and press in a new bearing.
>> 
>> Can someone please tell me the brand name and model number of the
>> 
>> bearing that they have used for this replacement?
>> 
>> Bearing bore size is about 12 mm.  OD is about 42 mm. Width is about 
>> 13 mm.
>> 
>> The worn out bearing says: NICE PHILA K8
>> 
>> Sincerely appreciate any help.
>> 
>> Scotty W7SW