TCT annular cutter with parallel DNTJ-5 System 1

TCT annular cutter with parallel DNTJ-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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DNTJ-5

D.O.C. 75mm
Unit：mm
◎ 31.75 Parallel shank for clamping strength and finish . Suitable foe large cutter above Φ61mm
◎ Selected special-purpose carbide tips with multi-cut geometry for ply-cutting and lower friction . Reduced damage of tip and improved performance of ships removal
◎ Applicable to hole cutting and process of annular groove on various magneric drills and press

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Type	Size
DNTJ-50500	50*75
DNTJ-50510	51*75
DNTJ-50520	52*75
……‍	……
DNTJ-51400	140*75
‍DNTJ-51450	145*75
DNTJ-51500‍	150*75‍

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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: What drills are used in stainless steel drilling?: Stainless steel cutting drill martensitic stainless steel 2Crl3, just wear E-E chipbreaker; while drilling of lCrl8Ni9Ti austenitic stainless steel, but also need additional A-A chipbreaker.The characteristics of S type carbide drill is: chisel edge can reduce the axial force of 50%; a former angle is positive, sharp edge; web thickness increases, increase the drill rigidity; two jet cutting fluid hole; arc cutting edge and the chip distribution is reasonable, easy cutting into pieces. In order to facilitate discharge.The characteristics of transposition of cemented carbide drill for shallow holes is equipped with two front end of the drill bit is asymmetric convex triangular blades, different parts of the chip removal hole, automatic centering, straight hole, and the cutting length is short; blade rake face is provided with a plurality of pit groove cutting, good performance especially reliable chip breaking, the chip is consistent with the broken chip cooling; the cutting fluid is directly sprayed to drilling surface, improve the cooling effect, chip very smooth; especially according to the hard alloy blade with different grades of workpiece materials, cutting speed is 80 ~ 120m/min, drilling is very brisk.

Q: Is the drill fast to feed, easy to break, or slow to feed, easy to break?: Therefore, the drill feed should be moderate, not only to ensure good broken, but also to ensure that the drill bit of cutting time.

Q: What are the weight specifications of the drill pile when the bridge pile foundation is constructed?: Impact drilling in two main forms, one for earth or soft rock using tubular hammer, one for hard rock is solid hammer, the general hammer is about 4-5t, if you want to increase, you can hammer on the steel bar plus counterweight.

Q: Who can do this? Put the drill into it: Change the hammer and steel ball to the service point. 3, time does not need, may not plug in, according to 1 of the method of force a few times just fine

Q: At present, the strongest oil drill bit, the deepest can drill how many meters?: Oil well drilling machine is mainly used for exploration and exploitation of underground oil and gas resources. It is composed of derricks, winches, rotary tables, big hooks, overhead cranes, taps, drill pipes, drills and so on. The drilling depth is 2-15000 meters.

Q: The maximum diameter of the hammer is fixed up? Can I open the hole? How does an electric drill screw in? How big is the drill bit?: Hammer of different sizes have different maximum diameter of the drill bit.

Q: 304 stainless steel material generally what kind of drill material processing?: Because of the difference in the chemical composition of the two, and make their corrosion resistance is different, ordinary stainless steel is generally not resistant to chemical medium corrosion, and acid resistant steel are generally stainless steel.

Q: Do you have a drill with a diameter of 2.2mm?: A drill with a small outside diameter, each of which varies in size from 0.1MM to 2.2MM in diameter. The drill bit is a commonly used specification and can be bought at will.

Q: Sharpening of drill angle when machining different materials: Generally, when drilling soft materials, the drill is best able to wear a bit of sharp, so that the drill bit centering, and drilling out of the hole size is not too bad. But if there is no special requirement, drilling with different angles can be used to drill different materials. In addition, the drill can be drilled at different angles on the same material as needed. For example, drilling on the same material, if the size of the hole requirements are relatively strict, the drill will have to sharpen a bit, so that the drill bit of centring is better, drilling out of the hole is relatively round. But if we drill deeper holes, it is better to wear them flat so that the bits are better and the chip is removed so that the cuttings in the deep hole can be smoothly discharged. In short, it is necessary to flexibly select different drilling bits according to the actual situation.

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