Creality 3D Printer Parts 5PCS Brass Extruder Wheel 40 Teeth Drive Gear for CR-10.CR-10S,S4,S5,Ender 3,Ender 3 Pro,Ender 3 V2

The stock stepper has a press fit gear which is challenging to remove once worn. Cut it off, dont bother with a puller. These replace the press fit gear on the arbor, but use two set screws with a vaguely 1.5mm hex hole to tighten them down. Tightening them down is problematic. Sometimes they hold fine, sometimes the set screws do not provide enough friction and the gear slips. If that happens then good luck diagnosing intermittent extrusion issues. One of mine finally slipped enough to stop extruding part way through a print. If you understand that problem and think it is solvable then this will be good value. I hit my arbor with a small diamond file to give the screws some purchase and that works very well. Up to you.

What an improvement. Pics show new one installed next to the old one. Best part is I now have spares in case I ever need to replace this one. Not hard to replace, just check out YouTube videos on replacement.

Easy to install and helps me with my CR10 issue

Good quality Extruder Wheel 40 Teeth Drive Gear

I got this new extruder for my ender 3 max, old one had worn a groove from filament. So far so good. Easy to install, just remove tension spring for access and turn the gear to access grub screws. Print quality had huge improvements.

These fit and works perfectly, just like OEM parts should, will buy again as necessary.

Good quality, used on Ender 3x

Great product.

I replaced my pressed-on gear after it stripped out. This got my rig working again but after a few weeks I see that the brass teeth are wearing down already. I think it won’t be long before I’m replacing it again. I think stainless gears would be better

These are a awesome addition to you fdm printer. These wheels will wear and stop pulling the filament to the extruder. Have these on hand as backups. You’ll thank me later