HSS-E annular cutter with fein thread shank DNHL-4

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Product Description:


D.O.C.  50mm
M18*6/P1.5 thread shank , Suitable on Fein magnetic drills
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


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Q:The threaded hole M5 general drill big bottom
General drilling screw threads diameter can be directly check the manual or by the following formula:Brittle materials (cast iron, bronze): bore diameter D=d (thread outside diameter) -1.1P (pitch)Plastic material (steel, copper, etc.): drilling hole diameter D=d (L thread diameter) -P (pitch)
Q:How do you drill a bit?
Less grinding, first of all, "do not rub", get the drill, that is, grinding, certainly blind grinding. This is a very important step to lay a solid foundation for grinding the next step only when you put a good position before sharpening. The teacher in the demonstration process, according to the methods and skills of practice summed up in simple formulas form explanation and demonstration, students often listen to understand, to do the normal operation demonstration, step by step action demonstration, slow motion model, so that the students easy to accept. Here the use of four formulas to guide the grinding process. Better effect.
Q:What drills do we use to drill jade?
Process for drilling holes on the jade carving is the use of drilling needle method, with a needle, rotated on the jade carving, jade sand "," to grind a shallow pit on the surface, then the pit, until the jade material wear. The drilling period "jade sand" has been in the pit with rotating rubbing hole wall, so the upper hole than the lower part to bear "jade sand" friction, so that by this method to hit the hole, the hole is small in shape.
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: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:With what drilling steel
Tungsten steel (hard alloy) with high hardness, strength and toughness, good wear resistance, heat resistance, corrosion resistance and a series of excellent performance, especially high hardness and wear resistance of it, even at a temperature of 500 DEG C also remained unchanged, at 1000 degrees C still have high hardness.
Q:The difference between left and right drills used to drill holes
Difference upstairs has been said, the drill designed to be right-handed, there are 1 reasons, the main direction of the motor. 2 because of the relationship between the centrifugal force, designed to turn right, more labor-saving. Taps are designed solely for ease of use
Q:M6 threads need to drill much bottom?
A spiral shaped continuous raised part having a specified cross section on the surface of a cylinder or cone. According to its parent thread shape is divided into cylindrical and conical screw threads; according to their position in the matrix is divided into outer and inner thread, according to the section shape (teeth) divided into triangular thread, rectangular screw, trapezoidal thread, serrated thread and other special shape screw.
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:How to distinguish between electric hammer drill bit used
Use the hammer drill shank is square, drill shank is round. The hardware store that buys electric tools will find out in comparison.

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