Help Please: Gear and linear speed calculation

[Muzzer]

You aren't far off. I agree with 720rpm. For a 2" pinion, that's 4523 in/min (multiply by pi x D). Divide by 39 (inches per meter) and 60 (seconds per minute) and I get 116 m/min and 1.93 m/s.

If it's moving slower than that, you should check the actual motor speed perhaps?

[BigBrand]

You aren't far off. I agree with 720rpm. For a 2" pinion, that's 4523 in/min (multiply by pi x D). Divide by 39 (inches per meter) and 60 (seconds per minute) and I get 116 m/min and 1.93 m/s.

If it's moving slower than that, you should check the actual motor speed perhaps?

Its set to 4m/m for my rapids(?). However, i've spotted the max voltage of the motor is 140 according to an old pdf i found and i think the supply is only 100-110v approx. Also i can almost guarantee they are not set up correctly. I downloaded the settings from the drive when i bough it and this is what is still in place as i didnt want to touch it without a better understanding of what im doing.

I guess its also not just the hypothetical max speed but more the acceleration / deccel of the motor also that determines the real life performance.

Im not too concerned about the current motor setup as that will be getting binned off.. what im trying to work out is what speeds i could expect of some new motors in real terms if i kept the current belt pulley and pinion drive systems or maybe part of them.

The closed loop steppers im looking at claim 10nm and 1200rpm max speed. If i feed that back through the equation im getting 216rpm and 55nm at max stated speed which equates to 0.56m/s. However, what speed do you typically run steppers at knowing they lose their torque?

Anybody got any input on what is a happy medium. Do i need to bin off one of the sets of pulleys and maybe change to just 1 set of 1:3 for instance?