A lot of interesting data here:
https://www.clintonaluminum.com/6061-vs-7075/
On Sunday, June 2, 2019, 10:30:17 AM PDT, Richard Thorne
<rthorne@rthorne.net> wrote:
I've been following this subject as I need 4 each of the 3.5" sheaves so
I can finish up a TRX-80HD tower raising setup.
I have an HDX-589 and purchased it used, unfortunately it did not come
with the raising setup.
I'm filling out the on line custom order form on isheaves.com.
They are asking what type aluminum. Should I go with 6061-T6 or 7075-T6
aircraft grade.
Rich - N5ZC
On 6/2/2019 11:11 AM, Mac wrote:
> I did as Kim suggest below and did contact Isheaves and Ray/Raymond he
> writes back that YES they have this bearing, in fact 800 in stock and
> at 29.00 each with a 10% discount on orders of 12 or more.
>
> Considering my age and tower needs plus raising fixture i think i will
> order 12 or so, and my words not have to run this trap ever again, i
> have lost count how many my tower { UST-589 } needs/uses but its a few.
>
> My technology here is i know when a bearing is bad because the small
> aluminum filings pile up as the cable pass's across the sheave and
> drags a new rut in the original groove that is not turning or most
> often frozen in place...
>
> best: mac/mc w5mc
>
> On 5/25/2019 7:27 PM, 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@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
>>>
>>>
>>>
>>>
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