PGN (2 Pack) 6203-2RS Bearing - Lubricated Chrome Steel Sealed Ball Bearing - 17x40x12mm Bearings with Rubber Seal & High RPM Support

Made clear that there were not many different sizes. They arrived quickly. They are well sealed from the environment

As others have stated, repack with grease before installing.

These felt like a good quality roller bearing, but unfortunately I wasnt able to use them. Even though the model number matched, they were the wrong size.

You cant beat these exact replacement bearings. Now my barrel fan will keep the animals cool for years to come.

Used two in a table saw rebuild. No complaints! Blade spins excellent. Held up well while being pursuaded into place with a hammer!

Bearing are as they were described, fit and work perfectly and at a very good price. Cant tell you about longevity since I just put them in.

Cheap bearing that didnt measure to the dimensions as advertised. If you need precision this wont do or maybe it will depending on the manufacturers quality control. I ended up paying 5 times more with McMaster-Carr but getting the precision for my application was worth it.

Ok

Good bearing for the price! So far so good!

I used one of these bearings to replace the original on a treadmill motor. There wasnt much in the way of grease inside the bearing as delivered. Just a limited amount of some clear substance - more like jelly, really. I removed whatever that was and repacked it with high-temperature grease before installing on the treadmill motor. It has been working flawlessly for a few days now. The motor is now very quiet.