Creality 3D Printer POM Wheel Plastic Pulley Linear Bearing for Ender 3/Ender 3 ProEnder 3 V2,CR-7,CR-8,CR-10,CR10S,S4,S5 (Pack of 10)

These wheels are extremely tight - they make it difficult to move the motors

I hate to say it but Ive finally found an official product from creality that isnt top quality. When I installed these to replace my worn ones (hadnt used that certain printer for along time and 2 of them got flat sides) and when i installed my first two, then four, then six, they all seemed to be not completely round. They seemed to cause wobbles/binding but luckily number 7 and 8 worked well and its been good ever since. I might recommend the clear ones better but not sure yet. Bought those and will update this is they are a much higher quality than these.

Several of the rollers have out of round side walls (the part that rides the guide). Doubled checked that the bearings were inserted correctly. The wobbly rollers made it impossible to level my bed. Ended up inspecting and comparing each until I found a straight set to install. 4 of the 10 were not usable. Had a similar issue with an off-brand set but that set had 8 of 10 unusable rollers.

wheels cause bed to wobble up and down

I was able to get enough working wheels out of this set to do what I wanted, but you can grab the center bearings and slide the plastic roller back and forth a bit. I dont think the shims between the rollers are precisely the same width as the shoulder inside of the roller, and that mismatch allows for some slop. Its a great value for the price, but test the ones that youre planning to use before you screw them in.

Why so many packs of 10? Popular Ender series have 13 Bad reviews - obviously not quality

A lot of reviews show the center ring is off, which people claim makes them unusable. There is a left and right bearing and a brass spacer in the middle. The wheels i got came with every center ring off center, but the ring moves just take a chopstick or something small, and push it to the center very simple, and it lines up the ring. It is a little loose and moves in shipping. I centered them all in 30 seconds. Ill updated once I install and test wheels. Amazing people into tech things cant figure this out.

When I replaced my stock wheels, it worked great for ~100 hours. A couple wheels had flat spots, once those were sorted out the rest worked great. They were not overly tight, but now have grooves and cant be tightened enough to prevent wobble on the y axis.

Worked great on my Ender 3x

Has to replace a few old wheels that kept locking up on my ender 3 and these worked perfect