齒輪，中間30齒，迷你銑床，金屬

Had some wobble with the plastic original, but this steel gear is solid as a rock—drives the rear shaft without any play. The 30 teeth mesh perfectly with the motor gear.

Installed this steel 30-tooth gear on my mini mill’s rear shaft, and it’s been running smooth with no more slipping like the old plastic one. The metal upgrade feels solid, and the fit matched perfectly with the motor shaft gear. Exactly what I needed for a reliable fix.

My mini mill was slipping with the old plastic gear, so swapping in this steel one was a direct replacement on the rear shaft. The 30 teeth mesh perfectly with the motor gear, and the machining is clean with no burrs. Feels rock solid now.