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FAQ
- Why can't the tap be nitrided? Drill bits are available.
- Many imported taps are coated now. In addition to TiN, there are TiCN, TiAlN.
- How big a drill bit does the M6 screw hole need?
- M6 drilling, according to 0.85*6---0.9*6, this is a bit to see what interval selection, but also the rest of the material, and to what degree of precision, such as the country with the more stringent requirements you should check the mechanical manual hole base shaft tolerances, and the material is also related to comparison large, such as electric drill is to use wood to choose a smaller bit.
- Why not hammer drill iron
- Electric hammer drill (electric hammer drill), is the "two function drill" and "hammer" handheld electric tool, "rotary cutting drill", with the impact of the impact mechanism of driving impact drill bit, drill driven in rotation at the same time, there is a direction perpendicular to the rotation of the rotary drill the reciprocating motion of the hammer. For concrete, brick, tile, marble and other materials drilling. "Hammer" to drive the impact force of drill rod, used for concrete, bricks and other materials on the slotting, holes or broken concrete etc..
- How to distinguish between electric hammer drill bit used
- Shape: only two general electric hammer drill: head and head! The tail is square square. The tail of the round head is round.. Round head is mainly used with light hammer, the tail has two slots. The square is mainly used for heavy hammer!Size: use caliper to measure the diameter of the alloy steel on the head.
- An expansion screw with a diameter of 20. How much impact bit do you need to use?
- An expansion screw with a diameter of 20 requires an impact drill with a diameter of 26mm.
- What is the drill bit of the percussion drill, please?!
- Used of natural stones or concrete. The impact of drilling work in a drill chuck adjustment knob, adjustable normal electric drills and impact drills in two ways. But the impact of drilling is the use of internal gear to achieve mutual beat of impact, but the impact is far less than the hammer. It is not suitable for reinforced concrete drill.
- Why is the drill hole drilled out of the hole triangular?
- The drilled bit drilled out of the hole was triangular because:The center grinding deviation of the drill is also different from the sides. The drill material with large drilling thickness is big bore, and the drill plate appears triangular hole. The best drill bit is three edged thin grinding tip, smooth drilling burr less. Therefore, the first grinding drill, you need a master demonstration.
- 8mm iron expansion bolts with few drilling drill mm?
- It's a gross mistake to say 8 mm punching. As with a hammer smashed bolt can not. Strictly speaking, 12 mm bit should be used, but if the expansion bolt is not standard, you need to drill 10 millimeters, then twist the hole, it is best to use caliper to measure the diameter of the bolt and then decide
