Upgrade Extruder Idler Arm U Groove Gear Bearing Compatible with Sidewinder X1 X2 / Metal Titan Aero Extruder Prusa i3 MK2 4max pro Genius Chiron 3D Printer (Grooved +Black)

Fits and works great.Only note is i swapped the filament guide bearing from the stock idler arm; this replacement arm has a standard bearing instead of the 'grooved' bearing that comes on the stock one. Not sure if that's 100% necessary but seems to me that the grooved bearing guides the filament better.

I really just needed the spring after I lost mine while reassembling my extruder. I put this on and it performs as expected.

The original, plastic idler arm was leaning very far to the left and not feeding filament correctly. Technically is wasn't broken. Maybe bent? Thanks to another reviewer for pointing out that the bearing is flat on this unit, which is not correct for the Artillery Genius. I had to destroy the original idler arm to remove the bearing but was able to install it into the metal idler arm without any problems.Overall this unit is well made and instills much more confidence when feeding new filament. I also learned a lot about my printer while making this improvement. I took the opportunity to do maintenance, clean and tighten everything. The printer works better than new at this point.

Works much better than the original plastic arm. One suggestion that I would make is to swap out the flat bearing with the grooved bearing that is used on the original. Saw many reviews complaining about this and figured that would be the cheapest and easiest fix. Since swapping the bearing I've had no issues.

Exactly as described. Drop in replacement for original.

Perfect for the artillery sidewinder. Works great and better than the original part. It's been used for roughly 200+ hours and is incredible.

The hole that fits onto the extruder motor shaft is too small, so the servo will be locked in place and can damage your motor or extruder gears. In addition the idler pulley is flat instead of concave. Buy this elsewhere.

Works like a charm. The first upgrade I did to my Sidewinder X1. I'll never have to deal with a broken idler arm issue.

I bought this for my sovol sv01. I had to file a small amount away so it would work. Took 30 seconds. Its much beefier than the factory plastic one.

Leider hält das Kugellager nicht lange und die gerillte Rolle beginnt an den Rand zu wandern und blockiert dann ständig.

Excelente producto y al mejor precio, lo compre me llegó y a los 3 días se me rompió la palanca de mi artillery sidewinder x1 muy oportuna mi compra y de buena calidad la palanca de aluminio

Upgrade obbligatorio per la mia stampante 3d che dopo qualche mese il pezzo originale si rompe

tricky/fiddly to fit on my sidewinder, but holds better and doesn't move during prints. Great upgrade.