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)

OEM fits perfectly!

After replacing my throat, heat block, and fan, then tuning my PID, I finally took the plunge and replaced the wheels underneath my bed, all four. All of my prints instantly went from failed to successful. No more divots or blobs, just smooth surfaces. Could not be happier.

Half of the wheels had tiny nicks which feel like a flat spot in the wheel (which is the issue I was trying to fix when I bought them). They are all thrown into one bag. Wish they were packed better because from my experience if you don’t want any banding these wheels have to be absolutely flawless. Wish somebody made a better version. Would gladly pay more for higher quality wheels.

I had to replace two of the originals

these are good bearings took out a lot of noise and wobble in the Z axis.

These wheels worked like new, would recommend these to others.

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

Some of these may be OK, but after swapping the old wheels on my CR10 bed with these, I noticed a distinct catch in when moving the bed by hand (without the belt connected), and it repeats about every 70mm which is the approximate circumference of these 24mm wheels (where they contact the rails is less than 24mm). I winnowed the batch down to the best and the problem is reduced but it is still present. I have read that can be due to several factors, so I will update this review once I am sure of what the problem is.

Used on a robot arm. Works well

I have an Ender 3, and I wanted to have some backups of these in case I need them. I havent used any yet, but as they look identical to the stock ones, I cannot see how they can possibly fail.