Rotary Hammer Drill Restoration | Makita HR3520

Rotary Hammer Drill Restoration Video I found this hammer drill from japan recycle shop 18$. It doesn't work because of the armature doesn't move. After the restoration, this hammer drill works very well. Power Tool Information --------------------------------- MAKITA HR3520 Max.In Concrete 35mm Core Bit Diameter(TCT) Max 79mm Min 25mm Joules 7.6Js Blows per Minute 3,300bpm No Load Speed 440rpm Input Wattage 840w Net Weight 5.8kg I hope you find something useful & enjoy from this video! Credit: Gear Show - https://www.youtube.com/channel/UCWKqh_3cb6cDiz2ICWc-5Sw