Leadshine EM806 - Am I using them properly?

[Chaz]

The motor has the small pulley, the ballscrew the larger pulley.

[routercnc]

That would be 2:1 with 2 turns in gives 1 turn out

As written it sort of looks like a gearing up but that is the convention for gearing down to get less speed but more torque.

[Chaz]

That would be 2:1 with 2 turns in gives 1 turn out

As written it sort of looks like a gearing up but that is the convention for gearing down to get less speed but more torque.

Yep, counted the pulleys, 18 tooth on one, 36 on the other. So making the larger one bigger will give me more torque. Just need to look at space and belt options (assuming there is no problem elsewhere and the drive is working as well as possible).

[Chaz]

So I can go to a 72 tooth pulley but no standard belt size works if I want to keep the Centres similar distance. Going to a 60 tooth pulley will give me more torque and with a 400mm belt versus 330mm, is virtually the exact same distance between centres.

[Ger21]

If your spinning the motor faster to try and get more torque, you may actually end up with even less torque.

Those huge motors usually have very little torque over 500-600rpm.

[Chaz]

If your spinning the motor faster to try and get more torque, you may actually end up with even less torque.

Those huge motors usually have very little torque over 500-600rpm.

Thanks Ger. This is what has been recommended to me too. With the Acorn tuning where there are 2 parameters, it will thread OK.

My 2nd lathe has an issue with the encoder which I hope to fix today, will then test back to back and see.