The angle grinder flange pair in UNF

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SUMMARY

The discussion centers around the challenges of finding a grinder flange pair with a 3/8" x 24UNF thread, as opposed to the more common M10 x 1.5. Participants emphasize that 24 TPI is too fine for a large flange nut, leading to potential over-tightening and locking issues. To address a jammed abrasive disc, heating the nut and disc to approximately 150 °C is recommended to collapse the polymer binder. Additionally, users are advised to consider fabricating adaptors for M14 and M10 threads to enhance compatibility with angle grinders.

PREREQUISITES
  • Understanding of thread specifications, specifically 3/8" x 24UNF and M10 x 1.5
  • Knowledge of angle grinder components and their functions
  • Familiarity with heating techniques for removing jammed components
  • Basic skills in fabricating mechanical adaptors
NEXT STEPS
  • Research the properties and applications of 3/8" x 24UNF threads in power tools
  • Learn about the design and use of adaptors for angle grinders
  • Investigate the effects of heating on polymer binders in abrasive discs
  • Explore the differences between thrust and radial bearings in power tools
USEFUL FOR

DIY enthusiasts, power tool users, and mechanical engineers looking to modify or enhance the functionality of angle grinders and drills.

abdulbadii
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TL;DR
is there's a grinder flange pair with thread 3/8" x 24UNF ?
Does anyone happen to know if there's a grinder flange pair, i.e. its spacer and fastener flanges, with 3/8" x 24UNF thread instead of M10 x 1.5?
 
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If you have not found one yet, I think it is most unlikely.

Can you better describe exactly what you are trying to do?

24 TPI is a very fine thread for use on such a large flange nut, and it will almost certainly over-tighten in use and become locked solid. You will probably then break the locking mechanism while trying to undo the flange nut.
To remove a jammed abrasive disc from a grinder, heat the nut and disc with a flame. At about 150 °C, the polymer binder in the disc will collapse, so it can be undone easily.

Some adaptors are available for M14 and M10, to fit a 3-jaw chuck or an extender to an angle grinder. You might fabricate a similar adaptor for your application. Take care.
https://www.ebay.com.au/itm/394148756308
This one has a 3/8" UNF.
https://www.ebay.com.au/itm/374202960408
 
Baluncore said:
If you have not found one yet, I think it is most unlikely.

Can you better describe exactly what you are trying to do?

24 TPI is a very fine thread for use on such a large flange nut, and it will almost certainly over-tighten in use and become locked solid. You will probably then break the locking mechanism while trying to undo the flange nut.
To remove a jammed abrasive disc from a grinder, heat the nut and disc with a flame. At about 150 °C, the polymer binder in the disc will collapse, so it can be undone easily.

Some adaptors are available for M14 and M10, to fit a 3-jaw chuck or an extender to an angle grinder. You might fabricate a similar adaptor for your application. Take care.
https://www.ebay.com.au/itm/394148756308
This one has a 3/8" UNF.
https://www.ebay.com.au/itm/374202960408
Need arose in making one of most common drill (here is mine) with 3/8" 24UNF shaft connector to function as grinder being able to use every kind of disc: cutting, grinding, wire disc, mounted straight onto it
 
You could keep the drill chuck with the drill and use the spindle from the second link I gave, or from a similar product.

Maybe you could thread the spindle adaptor to be 9/16" UNF, to eliminate the 3-jaw chuck.
 
There is a reason for the shape and speed of a regular grinder.
A drill will produce very different results.
 
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