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: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:What bits of percussion drills are made of?: Cemented carbide: an alloy material made from powder metallurgy by hard metals and bonded metals of refractory metals.

Q:How do you determine the speed of the drill? Is there any standard?: Different diameter of the drill bit, drilling speed, diameter smaller, higher speed, otherwise low;

Q:What's the difference between an impact drill and an ordinary electric drill?: Professional on the wall, concrete, stone top drilling, and multifunctional electric hammer, adjusted to the proper position with appropriate drill can replace the ordinary electric drill, electric use. The hammer is using bottom motor drives two sets of gear structure, a realization of it drill, and another one is to drive the piston, a hydraulic engine stroke, resulting in a strong impact force, along with drilling results. Strength can split rocks into gold.

Q:Why not hammer drill iron: Not because the iron hammer drill drill iron hammer drill bit hardness is greater than the capacity of.

Q:Can twist drills drill through wall tiles?: A drill bit (Drills) is a tool used to drill through holes or blind holes in solid material and to expand existing holes. The commonly used drills are mainly twist drills, flat drills, center drills, deep hole drills and casing drills. Reaming drill and countersink drill is not in solid material drilling, but it is also customary to put them in a bit.

Q:How to recognize the quality of twist drills?: The drill industry is a mixed bag, but only for experienced people. If it is just a bit industry contact, may refer to the following recommendations: currently recognized brand: imported good bits such as YG, SUS, and so on, the domestic first-line work, the amount of Kazakhstan, second tier, such as a river of Guanzhong, like other workers, there are some small scale manufacturers such as: Germany Tong, Lei, Del, st..

Q:Drill hammer type matching specifications: Four, five, six pit pit angle shank hammer respectively with four pits, five pits, six angle shank drill.

Q:How do you drill a sharpening bit?: By the back edge grinding behind. This is the slow grinding of the entire flank from the edge of the bit. It is easy to dissipate heat and grind. Based on the formula one or two to consolidate stability, this bit can be gentlyContact grinding wheel, a small amount of grinding, grinding, to observe the uniformity of the spark, to adjust the size of the pressure, and pay attention to the cooling of the drill. When the cooling start again after grinding, to set the position of the one or two formula,This is often difficult to master in the beginning, often involuntarily change the correctness of its position.Formula four: "the next swing tail don't tilt." This action is also very important during the sharpening of the drill, and the students often change the "up and down" into "up and down" in the process of grinding so that the other main blade of the drill is destroyed. withThe tail of the drill can not be raised above the horizontal center line of the grinding wheel, otherwise it will cause the edge to be dull and can not be cut.

Q:Is the drill fast to feed, easy to break, or slow to feed, easy to break?: The drill bit is fast to slow to feed off constantly does not matter much, mainly is the workpiece to be fixed, fixed, easily broken drill bit is tilted, fast heating feed is not easy to burn a bit empty, but also from the new rules, the drill bit, drill feed uneconomical, slow hair less heat, drilling accuracy high

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