Need welder to remove hardened steel excavator bushing

[BrokenBiker]

i have to ask...what is the normal way of removing this bush?

personally i would avoid any serious messing about buying a welder, then learning to weld, then finding out your method isnt going to work for whatever reason and just buy a cheap 240v die grinder and a long shank carbide burr and grind through top and bottom, then smack them loose with a big hammer and a cold chisel...

i know we dont do the voice of reason on here very often, but learning to stick weld isnt always a simple task for some and then having to produce welds strong enough to withstand a puller on what i imagine will be a fairly poorly fit up joint, its just going to be easier to cut the bush out.

by all means buy a welder and learn to weld, its a great skill to have for numerous applications, but for this application and the fact you are only working with 5mm thickness a die grinder will have that out in less time than it takes you to learn to stike an arc consistently

 

[Screwdriver]

Normally you would knock them out with a drift. 2mm lip should be plenty. Bit of heat would help but the key issue is to firmly mount the part and use an appropriate drift, perhaps ground to form a sensible radius.

 

[bricol]

I would be trying a suitable drift, that just passes through the centre, and if I had access, using a press.

You can get expanding bearing pullers - but whether they would be up to pulling those out, as I guess they are pretty long, I don't know.

 

[Pete.]

I am basically trying to replace the bushings in the bottom part of the image below. As you can see, it has a bushing pressed in each side (same internal diameter) and the casting is machined with a stop. The reason I mention the stop, is that there is basically no internal bushing edge available to help pull it out.

View attachment 528998

That's a binocular link round these parts.

Anyway, I would just weld a flat bar across the end and punching out with a piece of bar from the other end.