Ecotech Vortech MP40 Bearing Replacement

[enlighten]

I got packs of 10, so tried another one and it worked! Cheap bearings so probably not all were 100%

 

[Dburr1014]

I got packs of 10, so tried another one and it worked! Cheap bearings so probably not all were 100%

The cage on the bearings housing may not be set in right. Or sometimes if it has a metal shield, they can get dented and cause noise.