HSS SALE annular cutter(High performance version) DAHK-4

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10 pc
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Product Description:


D.O.C. 50mm
Made of high quality & super tough high speed steel with multi-cut geometry for ply-cutting and lower friction to reach better endurance and less breakage . Applicable to hole cutting on hard-cut materials
TiN or TiAlN coating are available upon request
Applicable to hole cutting and process of annular groove on various magneric drills and press , like Alfra , Hougen , Jancy , Euroboor , BDS , Ruko


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Q:What size of drill should we use to drill 10 holes?
Use Phi 10 bit. Use drill chuck quality is good (without obvious shaking) electric drill hole, no margin problem.
Q:How do the front and back angles of the drill change? How does it affect drilling?
The front angle mainly affects the feed rate of the drill, which is determined by the hardness and abrasiveness of the metal.The rear angle mainly affects the cutting, cutting, the central axial force, reducing the force surface, so as to reduce wear.
Q:CNC machine tools I use 6.5 bit drilling out is 6.7, what method can be solved?
Also, bit clamping and grinding will also affect the drilling size to varying degrees.Remedy is:1, the size of the hole strict requirements of the workpiece, you can drill after the hinge.2, the hole size requirements are not too strict, with 6.5 or 6.6 drill directly drilling. In mass production, the first workpiece must be measured and checked.
Q:Types of impact drills
There are two types of drill hole two groove round handle (usually produced abroad and anti hammer production abroad is used), four hole square shank (general domestic production of electric hammer used) and five bit six bit long pit, angle etc.. Hope to be of help to you.
Q:What is the maximum diameter of the drill bit 1500W heavy hammer?
An electric rotary hammer drill with a safety clutch with a pneumatic hammer mechanism. Hammer is the use of compressed gas piston, impact drill bit, need not make much effort, can open 6--100mm in concrete, brick, stone and other hard materials on the hole hammer in the above-mentioned materials on the opening of high efficiency, but it is not a hole in the metal.
Q:M6 screws should drill big holes
Metric screw M6 applies m5de, which is also related to the thickness of your material. Two, if you turn the standard, you should give slightly larger, not too much, you can put ten screws
Q:How to recognize the quality of twist drills?
General twist drill, a variety of points. It seems to be divided into two major groups. One is pumping out the twist, one is full mill. Now there is a knife bar slotted on top with knife particles. Called fast drilling, this is the high-speed processing of relatively large holes, pumping out the twist drill hardness is not so good, slightly better edge. As long as the mother material is good, the grinding accuracy is high. Now many are using this, relatively speaking, the price is much more expensive.
Q:Tap 10 taps, what size drills do we use?
In general, with nominal diameter equal to the diameter of the bottom hole pitch reduction. 10-1.5=8.5, that's 8.5. However, if the quarterly demand is high, follow the formula below:D1=d-5H/8 H=0.866p:D1-- drilling diameterD - thread diameterH - theoretical height of threaded teethP - pitch
Q:The difference between left and right drills used to drill holes
If the twist drill is said to be left-handed or right-handed, this is related to the direction of rotation of the spindle. Regular drilling machines use the right-hand bit; in some special cases, the main axis of the drilling machine rotates opposite, and the left-hand drill is required.
Q:M3 threaded hole. The bottom should choose large diameter drill bit
What do you not know about screw diameter reduction? M3 the pitch is 0.5, that is, 3-0.5=2.5.. If it is a piece, it can be larger. Choose 2.55 to 2.6 of the drill bit. All other materials are 2.5.

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