Mid-range HSS high-speed steel hole opener drill bit stainless steel hole opener metal sheet reamer 12-100mm

Scope of application: metal hole opener, can be in thin metal, iron plate, channel steel, aluminum alloy and other metal above the hole handling.

Instructions for use: at the beginning of drilling, the hole opener should slowly contact the object to be drilled and cannot hit the workpiece. The rotating speed should be low (the larger the hole opener, the lower the rotating speed). If conditions permit, coolant or water can be added. Please pay attention to slow down the feed speed when you are about to drill through.

1, the sword cutting material must be fixed, can not move, and the opening into a 90 degree right angle

2. When the positioning drill is drilled through, please wait a moment and then drill slowly.

3. If there is any abnormality or unsatisfactory cutting during the operating, please stop working and work after cutting.

4. Please do not use too much force when going up and down the screws, so as not to slide the screws.

5, can be used in pistol drill, used on drilling machines such as bench drill, magnetic drill and air drill