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: How do the drills grind?: Grinding twist drill with four formulas, here using four formulas to guide the grinding process. Better effect.

Q: What's the difference between a twist drill and an impact drill?: A twist drill is a tool for cutting round holes in a workpiece by rotating it in a relatively fixed axis. It is named because of its shape of spiral groove. The spiral groove has 2 grooves, 3 grooves or more grooves, but the 2 groove is the most common. The twist drill can be held in manual, electric, hand-held drilling tools, or drilling machines, milling machines, lathes and even machining centers. Drill materials are generally high speed tool steel or carbide.

Q: I want to buy an electric drill with requirement is about 3MM bit penetration with ordinary bowl to eat what to buy an electric drill to much power and strength: At present, domestic electric drill clamping diameter to 10mm. The power in the 300W-750W range, but also with positive and reverse stepless speed, to your requirements for the use of 300W single direction can speed drill start steady good control, the price is slightly high. When punching to clamp is glass hole, mounted on an electric drill, follow light pressure in vertical direction, and the water cooling in the drill point. Main point: the workpiece must be fixed to the vertical force, the drill hole can not be aware of, suddenly shaking or will cause cracking of porcelain. For bulk opening, the best selection of drill. Optional hand drill type: J1Z-6A 230W 6mm J1Z-10A 300W the clamping diameter; and the clamping diameter above 10mm; J1Z-FF02-6A 230W reversible variable speed clamping diameter 6mm; JIZ-FF-10A reversible variable speed 300W and above the clamping diameter of 10mm. Add water tools can be an empty beverage bottle, a small hole in the bottle cap, after irrigation, gently pinch the bottle body, the water will be shot to the drilling hole, it is best to operate two people in order to ensure safe and smooth.

Q: What drill is used for machining holes with a diameter of 3mm?: In general, if the drill pointed to the comparison of the grinding, it is recommended to be smaller than the final hole 0.10mm, of course, this is the processing of steel parts, plastic and other processing holes will shrink back, generally take a little larger diameter. If the final size of the strict requirements, it is best to drill rough, such as 2.5 of the drill bit, and then 2.8-2.9 drill reaming, and finally reaming, precision reaming, usually with 3.0mmD5-D6 class. Drill what specifications have, in general, the first series of multi-point, second, third series less, large dosage, you can find manufacturers custom. Can not find the words, you can buy a larger diameter of their own in centerless grinding or grinding on the outer circle to change, but the effect will be worse, the drill has inverted cone, not necessarily grinding, and need experience.

Q: What's the difference between white, black, and yellow twist drills?: The yellowish brown drill, called cobalt cobalt drill in the industry, is the unspoken rule of the drill. Cobalt containing drills were originally white, produced by grinding, and when they were atomized at the later stage, they were made of yellow brown (commonly called amber), which is the best in circulation. M35 (Co 5%)

Q: What is countersunk drill, flat head drill?: The traditional processing method is to use the normal size and low hole drill out in shallow hole with a suitable flat drill out above or to the appropriate size hole cutter width! Now progress to this two processing into a processing!.

Q: Angle action and characteristics of standard twist drill: The helix angle, the beta helix angle, is the angle between the most outer spiral line of the drill bit spiral groove and the axis of the drill bit. Since the lead of each point in the spiral groove is the same, the helix angle of the drill bit at different diameters is different, the helix angle at the outside diameter is the largest, and the closer the central helix angle is, the smaller the helix angle is. Increasing the helix angle increases the rake angle, which is beneficial to chip removal, but the drill bit stiffness decreases. The spiral angle of a standard twist drill is 18 to 38 degrees. For smaller diameter bit, the spiral angle should be smaller to ensure the rigidity of the drill bit.

Q: Want to buy a hammer, with the decoration of the house, how much more appropriate aperture: Must choose the hammer with speed switch. Touch switch when speed is low, can help smooth the drilling machine (for example, on the surface of ceramic tile on the smooth drilling, can not only prevent the bit slip, also can prevent drilling, rupture) during normal operation can be used to ensure high working efficiency.

Q: What's the difference between an impact drill and an ordinary electric drill?: An electric drill is a drilling machine that uses electricity as power. Is the power tools in the conventional products, but also the largest demand for power tools products. The electric drill is only available in the form of rotation, especially for drilling on materials that require little force, such as cork, metal, brick, tile, etc.. Just rely on the electric motor drives the drive gear to increase the strength of the drill bit rotation, do scraping in metal, wood and other forms of perforated material.

Q: How long the hand-held electric hammer drill: Hammer is portable!Electric hammer drill know there are 1.2 meters, the longest not seen don't know

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