Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Machining

SFT Search:   
Reply
 
Thread Tools Display Modes
  #1  
Old 02-19-2021, 09:47 PM
digr's Avatar
digr digr is offline
The Real Deal
 
Join Date: Apr 2005
Location: Duluth MN
Posts: 8,701
Default Drive shaft

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
Attached Thumbnails
Click image for larger version

Name:	DSCN5238.jpg
Views:	90
Size:	176.4 KB
ID:	159587   Click image for larger version

Name:	DSCN5239.jpg
Views:	87
Size:	188.3 KB
ID:	159588   Click image for larger version

Name:	shaft.jpg
Views:	81
Size:	50.1 KB
ID:	159589  
__________________
Drawing by Smartdraw
Reply With Quote
  #2  
Old 02-20-2021, 02:39 AM
LKeithR's Avatar
LKeithR LKeithR is offline
Hey...wait...is there a prize?
 
Join Date: Aug 2011
Location: Langley, B.C.
Posts: 5,411
Default

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?
__________________
Keith

Measure twice and cut once...or...wait, was that the other way around?
Reply With Quote
  #3  
Old 02-20-2021, 04:00 AM
GWIZ's Avatar
GWIZ GWIZ is offline
SFT Historian
 
Join Date: Feb 2006
Location: USA
Posts: 7,186
Default

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?
__________________
*
*
The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment. ~Warren G. Bennis

Last edited by GWIZ; 02-20-2021 at 04:39 AM.
Reply With Quote
  #4  
Old 02-20-2021, 03:40 AM
Rob65 Rob65 is offline
Member
 
Join Date: Apr 2010
Location: Sheffield UK
Posts: 149
Default

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
Reply With Quote
  #5  
Old 02-20-2021, 07:24 AM
toprecycler's Avatar
toprecycler toprecycler is offline
Administrator
 
Join Date: Jan 2009
Location: Petoskey, Michigan
Posts: 5,316
Default

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
__________________
Brian

You don't know what you don't know.

"It's what you learn after you know it all that counts." John Wooden
Reply With Quote
  #6  
Old 02-23-2021, 01:32 PM
digr's Avatar
digr digr is offline
The Real Deal
 
Join Date: Apr 2005
Location: Duluth MN
Posts: 8,701
Default

Its a done deal. Turned the end down to .075"with a over size bushing pressed on with loctite then turned to size.
Attached Thumbnails
Click image for larger version

Name:	DSCN5241.jpg
Views:	56
Size:	190.5 KB
ID:	159608  
__________________
Drawing by Smartdraw
Reply With Quote
  #7  
Old 02-23-2021, 02:14 PM
LKeithR's Avatar
LKeithR LKeithR is offline
Hey...wait...is there a prize?
 
Join Date: Aug 2011
Location: Langley, B.C.
Posts: 5,411
Default

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...
__________________
Keith

Measure twice and cut once...or...wait, was that the other way around?
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 12:15 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.