Gear Hub Bushing?

[Spindle]

From the Kentucky Equine Research website:


Question

On a recent horse-buying trip to Europe, I noticed that silage is frequently fed to horses. Is this the same feedstuff fed to cattle in the United States, and is it safe for horses? What’s the difference between silage and haylage?

Answer

Silage is chopped forage that retains its succulence through anaerobic fermentation. Silage usually contains grain plants such as corn. Haylage is also a fermented forage but typically does not include grain plants; it’s made entirely from grasses or legumes. In the United States, silage is more often fed to cattle than horses, as you have observed. Horses are fed hay in the United States because the weather is typically dry enough to allow for mass cultivation. In countries such as England or Netherlands, rainfall may preclude the production of hay, and alternative forages must be sought.
When preserved properly, silage is an acceptable feed for horses. Silage should be green or greenish-brown, be uniform in texture and moisture content, and have a pleasant smell. Due to the high moisture content, silage may be an excellent feed choice for horses with respiratory problems such as chronic obstructive pulmonary disease (heaves).
If the fermentation process goes amiss, however, mold and bacterial toxins may proliferate in silage. Moldy silage has been implicated in cases of colic and botulism.
Therefore, horse owners must carefully weigh the benefits of feeding silage against the potentially fatal side effects of spoiled silage. Because of these risks and the abundance of hay available, silage is not commonly fed to horses in the United States.

[Black Forest]

Silage is what goes into the cow.

Poop is what comes out the other end,

and then goes back onto fields to make more silage.

You can't feed silage to non- ruminants,
as it takes 4 stomachs to digest the... stuff... into the other... stuff.
Giving off milk, burps, and pee as byproducts.

t
but I digress. Just a sheet metal shim would do the deal. On a farm.

Here in Germany a lot of horse people feed silage to horses. They are not ruminants. They do fine on it. I never did it myself as I don't like the smell of silage so my horses get hay. I have to qualify the silage statement. It is hay silage not corn silage.

[Spindle]

Yes, I familiar with them from 20 years ago, real nice website. Seems like most of the distributors have a common source from India and quality inspection before shipping isn't part of the business model. I just had a situation where I abandoned supplier X due to quality problems, switched to supplier Y only to discover their source was supplier X when I had to return a part bought from Y & returned to X for refund. Then I discovered Samwel from the Netherlands produces superb parts and now buy only from their US distributors.

[Willy]

Have you tried 45 Restoration Company?

Have hard decent luck in the past with most of their parts although stock suppliers and quality is often subject to change I suppose.
Also when shopping long distance you can't visually inspect the part, this can be an issue unless you can get quality level assurance before ordering.
They offer a pretty comprehensive downloadable catalog.

[Spindle]

Taking it all in my friends, also considering opening the hub, installing a plug and boring a fresh 1" hole w/ new key slot. Or possibly a different gear of larger diameter.

This is a 2nd tier project I work on while awaiting parts for primary job of rebuilding a 1941 WLA 3 speed transmission. Greatest challenge for that one is getting reproduction parts that are actually usable. Running @ a 33% reject rate.

[J Tiers]

A hammer key would be better than a loose one for that case. And, going up a key size might help as well.

[BCRider]

Let's keep in mind that the difference in sizes for this is 1 to 1.25". So the sleeve will have a 0.125 give or take wall thickness. And that means an added 0.125 to the key which no longer has a sharply defined shear plane. Instead if the bushing slips then the key will be spanning the slippage and will roll and make an absolute mess under load.

I do like Willy's idea but for any thickness other than a small % of the key height I think we're looking at a high risk of things going badly. The key is going to see a lot of tipping and rolling force instead of simple shear.

I'm thinking instead that for the high loads that this looks to be needing that the end of the shaft should be built up with weld then turned down and a new keyway to fit the gear. The gear is likely cast iron from the looks of the pictures. But typically the shafts are machined from steel so could be welded far more easily.

[Tobias-B]

Silage is what goes into the cow.

Poop is what comes out the other end,

and then goes back onto fields to make more silage.

You can't feed silage to non- ruminants,
as it takes 4 stomachs to digest the... stuff... into the other... stuff.
Giving off milk, burps, and pee as byproducts.

t
but I digress. Just a sheet metal shim would do the deal. On a farm.

[old mart]

I'm grateful for all the helpful responses here and need to apologize for not participating. Even though I subscribed to the thread and selected email notifications for new posts I'm not getting notified. Not in spam, trash, or inbox.
If I use a shouldered bushing, is there a need to make it large enough to install screws through the shoulder into the hub? Please stop me if I'm overthinking as I often do.

You certainly could, if there was space for it, but a JT says "probably overthinking".

[J Tiers]

probably overthinking. Does not sound like a really high stress usage, depending on pump pressure.

I was riding my motorcycle in a 45 mph cross wind from college one day, and a local hog farmer inadvertently.... was blowing silage that day. Got a face full of it, open face helmet.
A whole new meaning to "eating bugs"

Not sure if you are talking "silage" there....... Silage ain't sewage.

[Spindle]

I'm grateful for all the helpful responses here and need to apologize for not participating. Even though I subscribed to the thread and selected email notifications for new posts I'm not getting notified. Not in spam, trash, or inbox.
If I use a shouldered bushing, is there a need to make it large enough to install screws through the shoulder into the hub? Please stop me if I'm overthinking as I often do.

[nickel-city-fab]

You're on the right track--a lot of overthinking here. To make things a little easier I'd put the sleeve (with
a shoulder on it) and the key in the bore before assembling--that will keep the sleeve from springing and
the shoulder ensures that the shaft goes into the sleeve without pushing it out of the bore. No Loctite...

Ah, I see! putting the sleeve into the bore first, instead of on the shaft first. Yep, that is indeed a better idea.

[LKeithR]

Buncha dang machinists here, not mechanics. Put the sleeve with the keyhole on the shaft, put the key into it, slide the gear on and lock it in place. This isn't a 10,000 rpm pump and it doesn't need the sleeve locktited.

You're on the right track--a lot of overthinking here. To make things a little easier I'd put the sleeve (with
a shoulder on it) and the key in the bore before assembling--that will keep the sleeve from springing and
the shoulder ensures that the shaft goes into the sleeve without pushing it out of the bore. No Loctite...

[mochinist]

When you cut the slot for the key the sleeve *will* spring open and then you won't be assembling anything. You have to think like a machinist sometimes -- that is why loctite the sleeve onto the shaft, so it can't spring.

Done this exact thing many times when time was an issue, yeah it springs when you cut the slot, but you just “spring” it back into place when assembling everything back together, it can be a minor pain if you try and hold the split bushing to unnecessarily tight tolerances, but that is operator error/ignorance of whats needed. There are other better ways to do this already mentioned in this thread, but this way will work fine for this application imho.

[nickel-city-fab]

Buncha dang machinists here, not mechanics. Put the sleeve with the keyhole on the shaft, put the key into it, slide the gear on and lock it in place. This isn't a 10,000 rpm pump and it doesn't need the sleeve locktited.

When you cut the slot for the key the sleeve *will* spring open and then you won't be assembling anything. You have to think like a machinist sometimes -- that is why loctite the sleeve onto the shaft, so it can't spring.