Befenybay Ball Screw Nut TBI SFU1204 (Diameter 12mm Pitch 4mm) for CNC Machine Parts

Having trouble loading this screw nut on to a shaft, I removed it and reused it. When the arbor arrived, it was slightly cracked, so it had to be somewhat forced over the shaft, but by wrapping it with 1-inch tube, it was able to be fixed. Immediately after the nut was tapped on to the thread, there were two layers of tape to hold it in place. Smooth rotation and snug fitting make this a very comfortable watch. For the price, this is a great product.

Alaiya Bean

| Apr 21, 2021

I cannot sleep. It wasn't a good fit for my shaft since the arbor was inserted in the middle. It appears the clear plastic one would have, but the dust cap ends were so bent and distorted that the clear one distorted when it was inserted. There were balls all over the place. This is my review after trying to repack the balls for over three hours. You should choose a different vendor if your time is valuable to you.

Carl Parker

| Aug 22, 2020