Cospa high! It is saved because it is cheaper than genuine parts with frequently changing parts. I think that it can be satisfied even if the durability is bad even if it is genuine.
I replaced the bearings made in China here. Made in China is vulnerable to shocks, soon it is gorigori. Also, the smoothness of rotation is completely different.
I use it for kneading machines, but my boss' s word was cheap. When I was purchasing from outside, it seems that I used it a lot high on toluene and used it many times. Currently it seems to be thrown away after using it several times.