Komatsu Drive Parts,Komatsu Final Drive Parts,Komatsu Final Drive Assembly,Excavator Final Drive Parts JINING SHANTE SONGZHENG CONSTRUCTION MACHINERY CO.LTD , https://www.sdkomatsudozerparts.com Holes often need to be rusted and ground during mechanical repair. In the absence of pickling, manual rusting and sanding are laborious, especially for holes with a pore diameter below φ150 mm, which is more difficult to manually grind and rust. In the work practice, we designed the tools shown in the figure to solve the above problems. The tool is a stepped shaft, and the small diameter portion is a handle, which is clamped on the hand drill. The large diameter end has a long groove of 1 to 1.5 mm wide in the axial direction. use