Carbide Compact Router max power, max torque and torque curve

[LiamN (Liam Newcombe)]

Hah, so, yes there was something I was missing, thanks;

So that’s confusing, not just the choice of plot axes.

Seems to be a motor with a no load (no torque) speed of 30,000 RPM, that comes down to about 16,000 RPM at 600mNm torque, where the max winding current seems to become the limit.

What is odd is that it appears to have a linear current / torque relationship, but I can’t tell if this is due to the speed regulator method or just applied torque slowing down the motor as the chart doesn’t clarify how the curves are derived.

[gmack (Gerald Mackelburg)]

That’s what surprised @ssnseawolf too.

[mikep]

@LiamN

Firstly,

“However, universal motors are usually relatively inefficient: around 30% for smaller motors and up to 70–75% for larger ones”

Yuck, the more I see the better the battery powered BLDC alternatives look

The difference is that the BDLC motor has a very different torque curve. BLDC is power efficient, but there is a trade off. At very low and very high speeds for a given motor, torque falls off considerably.

[gmack (Gerald Mackelburg)]

@gmack

Did you look at the info that I posted for the 1050W? Suhner router?

Here’s some more info on that router.