Review on 623ZZ Double Precision Bearing Bushing by Damian Ray

As my tests showed, these bearings are excellent at reducing friction and provide smooth movement. The precision is on point for high-speed applications. The build quality seems excellent with good materials and finishes. The drawback is the cost, which is a bit high compared to some other products in the market. Overall I am very satisfied with the performance and it`s a great investment for improving any power transmission application. .