AC 110V or 220V Power Supply Speed Governor For ER11 Chuck CNC 500W Spindle Motor (Power Supply)

First is the good news. This controller actually works with treadmill motors and it's able to provide fine speed control at low speed. It's great to quick prototype. Be aware that treadmill motors are usually rated for 2HP, that's about 1500W, and this controller is only rated for 500W, I probably wouldn't push it beyond 250W, so light applications or prototypes only.I'm using it for powering a DIY pottery wheel. There is a 10:1 gear reduction so I'm hoping the power rating is enough for this application, we'll see. The motor controller that came with the tread mill motor is really bad at low speed. It's not linear and very unpredictable. Therefore, this controller would be a great replacement if they can make it be rated at 2000W.Now, the controller came with all the connectors detached from the circuit board due to bad soldering job. There is a serious quality control issue with this manufacturer. If you can solder, this is an easy fix, and after soldering everything back in place, the controller worked as expected.So 3 stars for being the only seller selling this product on Amazon, a product that is very useful to me.

So far so good, I replaced most of my controllers, I bought 4 of these, I built my own cnc.

1 day past return date and it stops working.

Wow they nailed it with this one. Only 15 days past the return date (45 days total) and this thing craps out. Way to go guys. You’ve really figured out how to rob people well.

Works great!