[AT] Gearbox help

[Stephen Offiler]

Hi Brad:

Surplus Center was my first thought too.  I also like your idea to
fabricate your own with chain & sprockets and pillow blocks.  Third thought
is repair of the existing box. Generic gears are available, for example:

https://www.mcmaster.com/gears/=b777cba355e3455d8bbf7ad54f7d148ck544bkb4

SO


On Tue, Jan 7, 2020 at 10:19 AM Bo Hinch <bohinch at gmail.com> wrote:

> You might check out this site as they have a lot to offer .
>
> https://www.surpluscenter.com/Gear-Reducers/Right-Angle-Gear-Reducers/Cast-Iron-Shaft-Input-Gear-Reducers/
>
>
> On Tue, Jan 7, 2020 at 8:52 AM Gunnells, Brad R <brad-gunnells at uiowa.edu>
> wrote:
>
>> This is semi-tractor related. I have a log splitter my dad built many
>> years ago that is 3 point mounted that runs off the tractor PTO. This past
>> weekend as I was splitting some firewood I heard some knocking (thought it
>> was tractor at first). Got everything shut down and started looking things
>> over and come to find the gearbox on the splitter was the issue.
>>
>>
>>
>> Dad picked this gearbox up at an auction probably 35 years ago so have no
>> idea what it may have been used on. This gearbox has a selector to run it
>> 1:1 or 6:1. We use the 6:1 ratio to up the speed of the PTO to the
>> hydraulic pump. Allows the tractor to run just above idle.
>>
>>
>>
>> Would anyone have any thoughts on where someone might find a reasonably
>> priced replacement for something like this? I’ve also thought I could
>> probably replicate it with pillow block bearings and shaft with some chain
>> sprockets. Make a chain drive that gives a similar change in ration. I have
>> a suspicion we may be over driving the pump at 6:1 so maybe something more
>> like 4:1 would also be better for longevity of the pump.
>>
>>
>>
>> I’m trying to add pics for reference as well.
>>
>>
>>
>> Thanks for any suggestions you may have.
>>
>>
>>
>> Brad
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