sourcing map 2pcs 6203-2RS Bearing 17x40x12mm, Chrome Steel Double Rubber Seals Precision Bearing, Lubricated Deep Groove Ball Bearings, P6 (ABEC 3)

Spot on. I used these to replace the main bearings in my Kingrinder K6 manual coffee grinder, that had failed due to corrosion. These are an upgrade in my eyes from the ZZ bearings as they have a rubber seal, so shouldn’t fail as soon as the previous ones. They are slightly more draggy owing to the seal, but not an issue at all. Ideal.

Fitted them in my old concrete mixer. They work just fine. Used it for a few days no issues

Perfect to replace the one in my ornamental windmill it's spinning really well once again.

did what it said on the tin

Seems to be good quality. I replaced the sprocket carrier bearing on my 1998 ER500. Time will tell, but so far so good 👍

Good! Does the job

Brilliant

Not the best quality at all but cheap and got me out of a mess

Good

cheap bearings sold expensive. Ended up with only 6 usable bearings. very inconsistent inner diameter. 2 of them very loose on one shaft and one of them didn't even fit over the very same shaft. 2 of them were very "grindy" from the start and one of them turned quite heavily, which ended up in pulling twice the amount of the current in one of my brushless motors. Manufacturer is printed "xuchaohua" on them. Qualitywise I would not say these are ABEC3 quality. the ones I pulled out of my motors were labeled ABEC1 and although were already used they ended up running more smoothly. Look somewhere else for quality ones. Re: Only 1 star now, since the first 2 bearing lastet only half an hour before getting grindy as well.