Drive shaft

[digr]

This is a drive shaft off a tractor 1 1/8" dia. and four feet long without a carrier bearing. The splined end is 7/8" that goes threw the clutch plate into a bearing in the flywheel. It is 030" under size and the grooves you see are from the milling of the spline. I don't have a clutch plate to fit. What do we think is the best option is? weld it up and turn it down (hard to do with the splines)

turn the end down to 5/8" and make press on sleeve and turn to size

drill and ream to 5/8" and press in a plug and turn to size

I was told it runs a brush hog

[LKeithR]

I'm not clear on what you're trying to accomplish. Is the shaft going back in the tractor? Or are you going to use it to drive something else? If you're thinking about turning the splines off you obviously don't need them. If you put a sleeve on that end what is it going to fit into?

[Rob65]

Is this shaft running in a plain bush in the end of the crankshaft?

Might it be easier to replace the bush with one made up with a smaller bore than the existing one to match the nose of the shaft?

Rob


Sent from my iPhone using Tapatalk

[GWIZ]

One thing is for sure ... I would not drill a hole into the shaft ... spline teeth may not hold up with a hole..... if they are case hardened they may crack off.

I would look for a pilot bearing maybe with a "smaller id", on some cars they have brass/oil-lite bushings.
the bearing only turns when the clutch is used.

If you go with a sleeve I would consider a 0.050 wall thickness, 0.125 is a bit much. ..... question comes up will the disk push the sleeve?

[toprecycler]

How hard are the splines? Can you make a mark in them with a file?

You will want to be careful with any heat used in welding.

I might be willing to try to turn it down a bit, to get at least a .030” wall sleeve pressed onto it, with at least 3-4 thousand press fit. Then finish turn it down to size.

You could do a couple tack welds on the end, preferably with tig to minimize any heat going into the splines, but probably not needed if the hole in the flywheel is closed.


Sent from my iPhone using ShopFloorTalk

[digr]

Its a done deal. Turned the end down to .075"with a over size bushing pressed on with loctite then turned to size.

[LKeithR]

In my first post I wasn't clear on what you were doing--thought you were talking about modifying the splines. Now that I realize you're just talking about the pilot end of the shaft it all makes sense. What you did is exactly how I would have done it--I've done the same thing a few times in the past...