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DanishMan

PFAFF - size of balls for bearing

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Dear Friends

Anyone here, that know the size of the metal balls for this bearing?

Brgds

DanishMan

Bearing.jpg

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On 10/18/2019 at 4:20 PM, DanishMan said:

I believe they are 1/16"

That's what comes up in the description.  I don't envy anyone who gets into this part of the machine.

 

 

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I orderend som 1/16 balls for the bearing.

I hope they are not too dificult to fit

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Hello, @DanishMan

Can you tell me where this ball bearing part (91-019 657-05) goes? Is it housed inside that bushing part 91-019 656-05? I have to change my presser bar. I still haven't disassembled it yet, but now as it is I can't see this ball bearing part. Do you have any photos of this ball bearing 91-019 657-05? Perhaps when you were installing the little balls for the bearing?

Best Regards,

Hugo

Edited by hugocrafts

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I would suggest you use some sticky grease as part of the assembly process. I have had to use grease, tweezers, and a dental pick to assemble needle bearings.

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Hi Hugocraft

Sorry for my late response.

If you just remove the presser bar, the metal balls will fall out.

91-019 657-05 is housed inside 91-019 656-05. 

It has been a long time since I did change the metal balls of a machine, but I am going to pick up a 145 on Monday.

As I remember the ball size is 1/16 inch.

You can probably retain the metal balls inside the ball bearing part, if you insert a temporary piece of the same dimension as the presser bar.

Cheers

Søren

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On 7/21/2021 at 11:08 PM, DanishMan said:

Hi Hugocraft

Sorry for my late response.

If you just remove the presser bar, the metal balls will fall out.

91-019 657-05 is housed inside 91-019 656-05. 

It has been a long time since I did change the metal balls of a machine, but I am going to pick up a 145 on Monday.

As I remember the ball size is 1/16 inch.

You can probably retain the metal balls inside the ball bearing part, if you insert a temporary piece of the same dimension as the presser bar.

Cheers

Søren

Thanks for the reply, @DanishMan.

My goal is to replace just the presser bar without having to disassemble other parts If possible. So, I was thinking to pull the old presser bar from the above, If that's possible. Thanks for the warning and letting me know about the little bearing balls, I'll keep that in mind when I'll be doing the procedure. Maybe I'll try to put some grease If possible to keep the balls from jumping off and a small bar with the same thickness in diameter in order to hold them like you suggested.

If you have any other advice on that, don't hesitate to share it.

Best regards,

Hugo

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Probably better to take it the other way. And fit the new one, while removing the old one.

Cheers

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