HSS-E annular cutter with universal shank DNHC-5

HSS-E annular cutter with universal shank DNHC-5 System 1

HSS-E annular cutter with universal shank DNHC-5

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 10 pc

Supply Capability:: 5000 pc/month

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DNHC-5

D.O.C. 75mm
Unit：mm
◎Universal shank for various magentic drills
◎Made of super tough high speed steel with mulit-cut geometry for ply-cutting and lower feiction to reach better performance of endurance and removal of chips
◎Applicable to hole cutting and process of annular groove on various magnetic drills and press.

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Type	Size
DAHK-50180	18*75
DAHK-50190	19*75
……	……
DAHK-50500	50*75‍

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Q:What is the four hole five hole hammer: The five pit is the BOSCH patent to produce this kind of hammer to buy patents to BOSCH can. Four pits are everywhere, and every household can produce it.

Q:What are the main points of drill grinding?: The edge of the drill must swing up and down, and the tail of the drill can not stand up. This is a standard bit grinding action. The main cutting edge swings up and down on the grinding wheel, that is, the hand holding the front of the drill must swing the drill bit up and down evenly on the grinding wheel surface. The handle of the hand can not swing, but also to prevent the rear handle to go up, that is, the tail of the drill can not be high above the horizontal center line of the grinding wheel, otherwise it will make the edge of the grinding blunt, unable to cut. This is the most crucial step, the drill is worn well and bad, there is a lot to do with it. At about the same time, start at the edge of the blade and rub it gently in the back, so that the back of the blade is more polished.

Q:Relationship between pump pressure and bit pressure drop: Liquids such as liquids, liquids, gases, and liquids containing suspended solids. Pump can usually be divided into three types of displacement pumps, power pumps and other types of pumps according to the principle of operation. In addition to the principle of classification, there are other ways

Q:What kind of steel do you need to drill?!: Drills are usually made of cemented carbide. The so-called carbide is based on tungsten carbide powder as a matrix, cobalt powder as binder, by compression and sintering. Usually containing tungsten carbide 94%, cobalt containing 6%. Because of its high hardness, very wear-resistant, has a certain strength, suitable for high-speed cutting. But the poor toughness, very brittle, in order to improve the performance of the hard alloy, with some hard carbide titanium carbide substrate in chemical vapor deposition of a layer of 5 to 7 microns (TIC) or titanium nitride (TIN), which has higher hardness.

Q:Why is the drill angle 118 degrees?: Standard angle has 118, 120, 130, 135, 140, processing material is different, drill top angle is not the same.

Q:How to install expansion screw? How big is the screw? What size is it? Or what? How do you see the size?: What size screws should be made with a large 2 millimeter head, and the diameter and length of the tail are the type

Q:By drilling with a bit, why is the hole drilled straight 2 larger than the diameter of the drill?: Equipment: drill precision, bearing wear and drill card precision drill conical burr speed selectionThe lateral and lateral deflection of the bit and the size of the back angleDrilling can only be used for fastening, for mating, for boring, for reaming

Q:How do I take out an electric drill bit?: Drill bit: with a key, insert the key into the side hole of the drill sleeve and loosen the bit to remove the bit.

Q:How big is the drill bit for the 7mm hole?: If the big point is OK, use 6.5 bit to drill a hole, and then use 7 bit reaming, we can get 7.0-7.1 hole, directly use 7 bit drilling, the hole error is the biggest. Hope to be helpful to you, please adopt.

Q:What's the difference between white, black, and yellow twist drills?: Black becomes nitrided and can be used to drill aluminum products, i.e., soft materials, after improved properties

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