HOCENWAYUpgrade Metal Extruder Idler Arm with Groove Bearing Gear Compatible with 1.75mm SV01/ SV03 Prusa i3 MK3 Artillery Genius Sidewinder X1 Anycubic 4MAX Pro Chiron Titan Aero 3D Printer

Drops right in place. Good action.

Superbe pièce très pratique. A remplacé la mienne cassée sur la Chiron 3D. Faut juste limer le support qui tient le ressort car sinon la vis de réglage le touche. A utiliser avec le ressort d'origine sur la Chiron 3D. C'est parfait.

This is exactly what I needed for my Mega S. The plastic one that is stock is horrible and the first part to fail usually. The bearing rips right out of the plastic and becomes part of the motor shaft.Now keep in mind two things when using this on the Mega S. The stem that holds the spring has to be removed. It rendered the spring effect unusable on the extruder. So that's no good. I simply ground it right off. No issues. Seems to be aluminum so that's good.The second issue is that the wheel that cups the filament must be perfectly inline. So gear sprocket location on the motor shaft is crucial. Other that that, the bearing has stayed!!!

Installed on Artillery Genius, alignment was off a bit. Arm seems well made and machined. The bearing for the filament pressure roller failed after just 2 months.

I was able to get this item and tested. is as they said in the description. The product is metal and it does work great when trying to pull the filament down. I would recommend this product.