fast delivery. thank you so much.
impressive product. by hand examination, shaft has no vertical play. er11 is very precise, i can't detect any slope by eye, i made test drill with 0.3mm drill bit and achieve perfect result. motor can drain 2.5A from 3.3V supply in stall state. in my opinnion 300w rating is the thermal limit. there is a small vibration at low speeds. i think the plastic cooling fan is not balanced and causes this vibration. motor itself is very silent, fan is the main source of noise. recommended product and seller.