HSS-E annular cutter with Weldon shank DAHSK-2

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Product Description:

DNHX(K)-2 

D.O.C.  25mm
Unitmm

Weldon shank , with more stable clamping for stable cutting and finish of holes
Additional one hole on the shank of cutters≤40mm , fit arbors with 19.05 bore as well as quick-change system
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 magneric drills and press , like Alfra , Hougen , Jancy , Euroboor , BDS , Ruko


Type
Size
DAHK-2012012*25
DAHK-2013013*25
…………
DAHK-2065065*25


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Q:Method for processing coolant hole of internal cooling bit
About the processing of the inner cold hole, it depends on the material and the corresponding products. In general, cemented carbide is added to the core when the mold is fixed, and then the core material is different according to the hot melt type.
Q:Do we need drill bit for cast steel drilling?
The drill material is usually made of high speed tool steel or carbide, and high speed steel is often used in the factory. When drilling, it will be added coolant according to the different materials and rotating speed.
Q:What's the angle of a standard twist drill?
It is divided into 135 degrees and 118 degrees135 degrees vertex angle is mainly used for more hard workpiece, this design is to improve the positioning of the drill bit accurate (because 135 degrees need to open the back angle), broken cutting fastThe drill with a top angle of 118 degrees is mainly used for soft materials. The purpose is to drill holes and feed quickly. That is to say, drilling speed is very fast
Q:By drilling with a bit, why is the hole drilled straight 2 larger than the diameter of the drill?
Hardness of the machined material --- determine the size of the drill point: cast iron is used at 135 degrees - 140 degrees; aluminum alloy is about 120 degrees;
Q:Specification of plastic expansion plug and collocation of drill bits
A plastic expansion tube has a certain expansion. Also ensure that the initial plug is inserted, and the bore diameter is the same as or slightly larger than the nominal diameter.
Q:Why is the drill angle 118 degrees?
It is the projection angle of the two main cutting edges in the middle section. The smaller the vertex angle is, the longer the main cutting edge is, the load on the cutting edge of the unit decreases, and the axial force decreases, which has a strong axial stability to the bit. And the knife edge at the outer circle is increased, which is beneficial to dissipate heat and improve the durability of the cutter.
Q:Can an electric drill bit a wall
Common electric drill: used for drilling of iron, wood, plastic, etc.;
Q:How to change the drill bit of impact electric drill
Remove the drill: the impact drill upside down on the ground (bit upward), left hand holding down the drill root plastic ring, right hand holding the drill bit upward, provided when rotating around a bit can be taken out.
Q:What causes the drill bit to break at the end of the hole?
The cutting edge angle is not proper, and the iron chip blockage causes the resistance to increase.1) and the principle of uniform, when the edge angle is not appropriate, the drill operation must not only overcome the cutting resistance, but also overcome iron friction and pore wall blocking resistance, resistance and greater than two fold twist drill strength, also can cause the drill bit break.
Q:What is the four hole five hole hammer?
Five: refers to the pit slot number is five at the handle of hammer drill hole, three key and two ball groove, used in the five pit on the hammer. This drill is usually used in the heavy hammer.

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