Identify the Mystery Object.

[BDR-529]

Let's continue with the round theme because I initially believed your image was one of these since they come in all symmetrical shapes and sizes too

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[Jeffcs]

Looks like a tool
Hone

 

[BDR-529]

Looks like a tool
Hone

Not a tool.

 

[Zapp]

Flywheel / pulley

 

[BDR-529]

Flywheel / pulley

Not a flywheel and it does not transfer power to a belt but you are getting somewhere here.

This is a part of something that most members of this forum own.

 

[cjoliprsf]

does it rotate? how fast?

 

[BDR-529]

does it rotate? how fast?

Yes, according to manufacturer up to 35 000rpm

This is a brilliant example of german over-engineering but it's also pretty clever. Single injection molded part has three functions whereas the ones forum readers own typically miss two of these.

 

[Brodhall]

Some form of wheel hub/ trim

 

[BDR-529]

Some form of wheel hub/ trim

This device is devoid of any wheels.

 

[Zapp]

Blender

 

[cjoliprsf]

Blender

Much too fast for a blender - 35 000 RPM is more akin to turbines!
I would be tempted by some sort of tool, but the OP said it was not.

 

[Harvey Melvin Richards]

Part of a vacuum? Very elaborate wrench?

 

[BDR-529]

Blender

First one. Clever design indeed. This joint between blade axis and motor is also a spring that softens sharp impacts and a clutch that slips if load becomes too heavy.

Damn, apparently I can't rotate this? Anyway, your turn!

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[BDR-529]

Much too fast for a blender - 35 000 RPM is more akin to turbines!
I would be tempted by some sort of tool, but the OP said it was not.

Since it's from Bosch and not Wish I have to trust what it says on the box. There are quite a lot of blenders with 30k+ rpm ratings. Bosch has even one called "VitaBoost High Speed Blender" which claims to have 45 000rpm and "speed over 400km/h". They didn't specify what exactly was going at that speed but forget the lid and you'll soon find out...

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[Zapp]

Thank you.

Round and round:

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[fishtug]

Fishing reel?

 

[Jeffcs]

Sander wheel

 

[chipshot713]

measuring tape ?

 

[Zapp]

Fishing reel?

Sander wheel

measuring tape ?

None of the above.

 

[Zapp]

Clue: no rotation of the object is needed to use it.