repair angle grinder gear?

[mikecwik]

its a Milwaukee 9".

as i was shutting a small drawer on my tool box the other day (not that the tools were relevant to the fix) i was sort of disheartened at the amount of money laying there and yet i really couldnt fix this.

my next idea was to use it as a stationary sander but its rotating the wrong way for that. 5000 rpm is a bit fast for a buffer? the motor bearing/bushings are not designed to take much of a load anyway so in the end it might be a waste of time.... i need to stare and think some more maybe.

[krv3000]

hi well if you rely wont to fix it have a look at other manufachers of this type of grinder and see if the gear is a replaceable one on other models IE my grinder is a Bosch and the gear on the end of the shaft is on a key way and can be replaced but saying that my grinder is over 10 years old

[f350ca]

Mike
Is there some way you could move the armature ahead or machine the end of the motor housing to use the un worn part of the pinion. Just a thought.
Greg

[mikecwik]

(05-30-2012, 08:08 PM)f350ca Wrote: Mike
Is there some way you could move the armature ahead or machine the end of the motor housing to use the un worn part of the pinion. Just a thought.
Greg

i thought i would move the unworn part ahead but had less room than i originally thought i had.

it would have been perfect to use a flap disc on but the rotation is wrong. if i could only get married and have children this full catastrophe would be complete.

[stevec]

(05-30-2012, 11:08 PM)mikecwik Wrote: if i could only get married and have children this full catastrophe would be complete.

Have faith, you may get there yet.

[doubleboost]

Cut the plug off then bin it
Shame we live in a throw away society
John

[EdK]

That is a shame, especially since it's a Milwaukee brand. Top of the line.

Ed

[DaveH]

(05-31-2012, 05:03 PM)EdAK Wrote: That is a shame, especially since it's a Milwaukee brand. Top of the line.
Ed

Seems to be the end of the line

DaveH

[November X-ray]

Quote: if i could only get married and have children this full catastrophe would be complete.

I'll trade you my wife and kids for your broken grinder! Believe me, I'd be money ahead on that!!!

I had a crazy thought about submerging the armature in a bucket of water and leave the shaft sticking out far enough to braze up the ruined gears. After building it up with brass sufficiently, and once cooled, chuck it up in the lathe and turn down the built up area. Once turned down to size, you could use a file, a die grinder with rasp cutter or even the mill and a small end mill and rotary table and try to re-shape the teeth. Then maybe a soaking in WD-40 to ensure all the moisture is gone and maybe it will work. OR, center drill a pilot hole past the good area, cut off the bad portion and then cut off the good area and make a spacer to place the good portion where the bad teeth were. Then solder this piece in place using the submerged armature trick.

[mikecwik]

i bet that there is a third world shop with 1/10 the tooling available than i have that could manage this repair and could use the tool ten times as productively as i could.

putting the gears back on while it would have been a challenge to me i think i could have pulled that off but it would have been a waste of time since i couldnt harden them.

i dont know what but im putting something direct drive onto that spent gear.