3d printed a smaller pulley

[jimi]

18 minutes ago, stor said:

Slowest i could run on the slowest speed (500)

Thanks Stor, that looks good and slow. I have had this on my list for a while now also, maybe get around to doing it one day. the jack is also a little too fast for me. 

[stor]

6 minutes ago, jimi said:

Thanks Stor, that looks good and slow. I have had this on my list for a while now also, maybe get around to doing it one day. the jack is also a little too fast for me. 

No worries !
Maby one of the guys above can point you in the direction of a seller if you dont wanna go thru the pain of 3d printing one, but if you do wanna 3d print one let me know and ill send you the file.

[jimi]

1 minute ago, stor said:

No worries !
Maby one of the guys above can point you in the direction of a seller if you dont wanna go thru the pain of 3d printing one, but if you do wanna 3d print one let me know and ill send you the file.

Ok, thanks Stor.

[Joniboo]

I have recently been in contact with a supplier regarding this motor (JK-563A-1) and was told it is not possible to remove the pulley! As I read this thread I got confused. Did you find it easy to remove the pulley? Could you share the measurement for the inner diameter of the pulley? Was it straight of angeled?

Edited March 12, 2020 by Joniboo
Typo

[Constabulary]

Pulleys from Jack Servos are removable (I have two of em). The point is they do not supply smaller pulleys for this motor, so you have to modify a pulley with15mm straight bore. I guess thats why they say it is not removable. BTW why should it not be removable - some one assembled the motor and installed the pulley... so... 

Edited March 12, 2020 by Constabulary

[Joniboo]

20 minutes ago, Constabulary said:

Pulleys from Jack Servos are removable (I have two of em). The point is they do not supply smaller pulleys for this motor, so you have to modify a pulley with15mm straight bore. I guess thats why they say it is not removable. BTW why should it not be removable - some one assembled the motor and installed the pulley... so...  t

So weird right? My mind almost could not comprehend it so I created a scenario where they welded it to the shaft because reasons

So the shaft have a tapered shaft? So the straight bore pulley needs to be modified by a sleeve of sorts?

Edited March 12, 2020 by Joniboo
Forgot a question

[chrisash]

You could always design and fix the new pulley to the old one and just adjust the position of the motor to line up machine and new pulley

You would naturally need to keep it balanced

Edited March 12, 2020 by chrisash

[Sterlclan1]

found this on thingverse

50MM_V-Belt_Pulley.zip

[Gregg From Keystone Sewing]

On 3/12/2020 at 11:22 AM, Constabulary said:

Pulleys from Jack Servos are removable (I have two of em). The point is they do not supply smaller pulleys for this motor, so you have to modify a pulley with15mm straight bore. I guess thats why they say it is not removable. BTW why should it not be removable - some one assembled the motor and installed the pulley... so... 

Is it a tapered bore pulley?  Some new and old motors still used them, and you can get them in a variety of sizes if that's the case.

[jimi]

6 hours ago, Gregg From Keystone Sewing said:

Is it a tapered bore pulley?

No Gregg, it is a 13mm bore with a 2x4mm key way.

 I printed one out yesterday in two halves to avoid support material and time (and i am a noob at this...Lol..) and it works real slow and nice, BUT the needle positioner will give you a error5. So today after trying to figure it out i can only think that the chip is programmed to a certain time lapse??  it will trigger the error if the disk in the positioner takes longer to trigger the sensor ?? So it seems that a 50mm pulley Will work, I have just printed one and tried it. I dont know if a 45mm one will work?? So if anyone wants the Stl just say, but it is real easy to do.