NSK 6203-2RS 6203DDU Made in Japan 17X40X12MM Pressed Steel Cage,Deep Groove Ball Bearings 6203RS

I used this to replace a chirping tensioner pulley bearing on our Honda, and seems like a good quality bearing. It's nice and quiet and spins perfectly true and smooth. Time will tell how it holds up. I needed a press to get the old bearing out, but it saved me about 2/3 the cost of a replacement pulley from the local auto parts house.

Fit perfectly, smooth and quiet. If you know how to replace bearings correctly you can save a lot of money on your vehicles rather than buying an entire pulley, pump, etc.

These worked like a charm on our Sole Treadmill! The rear roller was so loud we were ready to throw it all away and buy a new one for $1800. But after watch YouTube, I took a chance and bought these bearings. The roller comes off the treadmill easily, BUT warning that the old bearings almost didn't get out. They are pressed into the larger roller at each end, and a bearing hammer puller thing would not budge them. I tried heating, cooling, pounding, etc. It was about 2.5 hours later that I finally just figured I would use the inner axel of the roller (that comes right out) and wedge it so that it pushed against the back of the opposite bearing, as I pounded the S#%$$%$ out of it with a sledge hammer. The neighbors must have loved it! A couple of hits and the first one flew out. The second one also came out. The reason I did NOT want to do this with the axel was it deforms the end of the axel. Oh well I thought, as my plan B was to return these unused bearings and buy the Sole roller/bearing/axel assembly :( But turns out the deformity caused by the hammer made no difference when I put in the new bearings and axel and put it back on the treadmill. These bearings brought the sound back to brand-new condition. They fitted into both ends of the roller with just a bit of pressure and gentle tapping. I hope they last but I still have 2 new ones. The Sole originals were just worn out and grinding terribly. I do not know how they froze those in that tube, but they obviously want you to pay the $$$ to buy the set. Thank you bearing suppliers for selling these. Really worked and saved me almost $2k :)

Good

These bearings were a perfect fit for my Pentair WhisperFlo 3/4 HP AOSmith pool pump motor. I replaced the two bearings and the pump is now whisper quiet again. The packaging looked to be original. Each bearing is packaged inside cardboard box with NSK sealing tape on the ends. The box was then inside a plastic envelope with a tear strip. Bearings were marked with the correct product number and Japan as place of manufacture. These look to be original and not counterfeit.

Like many other reviewers, the bearing that I received was not made in Japan, but in Poland. The engraving on the races looked pretty basic, not sure if a genuine NKS would look that way. The packing was somewhat worn, almost looked like it was recycled. But then, if someone wanted to make a fake NKS bearing, would the chose Poland as country to origin to disguise that? However, it fit well and hopefully will last. I used it to replace the tensioner pulley in my 2003 4Runner, since the OEM part from Toyota was no longer available. It turned out that the bearing that came out of the car was made in Canada. It lasted over 20 years / 160k miles and started to make screeching noises.

Good bearing. Genuine NSK

Awesome! Made in Japan! Bearing looks rough around the edges/ scuffed….