Welding to an electric motor casing

[Shaun @ Tru6]

The spot welds on the mounting bracket to my tumbler motor all failed. Easy to weld it back on but should I pull the armature out of the motor first? It's a basic single phase 3/4 hp motor.

https://cmtopline.com/products/mr-deburr-db300-3-4-horsepower-single-phase-motor?variant=45313724645614&gad_source=1&gclid=CjwKCAiAhP67BhAVEiwA2E_9g5fjP0K-tu4ZlCkebJIgS2STdH0o38EYlKZaeCxyUKAmYKcJYuL2jhoC2U MQAvD_BwE

[oldE]

Knowing how easily the thin insulation on the windings can be compromised, I would strip it down to the casing before welding.

Best
Les

[Dpmulvan]

You don’t have to pull the armature.

[Tobra]

I know you are listening to Les

[Cajundaddy]

Heat is the enemy of electric motor windings so I would strip it down.

[911 Rod]

Cover should come off pretty easy without a major teardown?
But isn't the mounting bracket part of the motor itself?

[Shaun @ Tru6]

As I should have known, there's a bearing on both ends of the spindle and removing the pulley end one would have destroyed that one. So with both ends loose/off, I drilled new holes in the mount and sanded a clean finish on the case and welded away. Back together, works perfectly. That said, I measured the bearings and have ordered new ones so I can replace them at some point. Thanks for the replies.

[Shaun @ Tru6]

Originally Posted by 911 Rod

Cover should come off pretty easy without a major teardown?
But isn't the mounting bracket part of the motor itself?

Tthe mount/bracket/cradle is spot welded to the case.

[john70t]

What about glue + mechanical type fastener instead?
Anything nearby to grip onto?

(edit-too late)

[Shaun @ Tru6]

It's been working all day, and the tumbler has new vigor, so it must have been soaking up some of the oscillation for quite some time giving up the ghost today.