HSS-E annular cutter with FEIN Quick-IN DNHF-3

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Product Description:


D.O.C.  35mm
18mm Fein Quick-IN 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:Hammer can play with an electric drill steel, can you?
Hammer: a safety clutch of electric rotary hammer with a pneumatic hammer drilling mechanism. Hammer is the use of compressed gas piston, impact drill bit, need not make much effort, can open 6--100mm in concrete, brick, stone and other hard materials on the hole hammer in the above-mentioned materials on the opening of high efficiency, but can not open holes in the metal.
Q:How big is the drill bit for the 7mm hole?
If 7 holes are machined, 6.9 bit holes are used, and 7 reaming holes are used to obtain the qualified holes
Q:How big is the screw hole at the back of the torch chuck, Is it a rebound?
The bore of the torch chuck is a thread free bore with a degree of indentation. It is tight fit and not spinning!The drill chuck is in threaded buckle! Commonly used electric hand drill bit within 6 mm diameter 8 mm individual chuck Cocker!! 12-16 mm drill!The hole on the side of the chuck is the drill bit, the key, the axle hole, and no thread!
Q:Bit grinding, hair and technical requirements
There is now a knife grinding machine YN-01A+ drill grinding machine grinding twist drill on the market, SG fast drilling, DG long short blade edge deep hole drilling, in the processing of 3D within the hole, the ordinary twist drill into fast drilling, without positioning, direct drilling, hole position accuracy and the efficiency on the use of ultra fast; DG to the mill, if it is less than 10D or above according to the processing of materials and machine tools and other site by cutting and grinding method when less than 3D above 5D; worn by YN-01A+ zzm-a drill bit to meet the basic situation the essence of drill bit efficiency 2-3 times, the service life of the drill bit can provide 3-5 times; this machine operation is simple and fast, without experience in technology, one minute can grind a bit.
Q:Drills, drills, heating drills, will they be annealed?
When drilling cast iron, do not use or use 5% ~ 8% emulsion or kerosene. When drilling steel parts, use 3% ~ 7% emulsion. When deep hole machining or cutting speed is higher, feed amount should be large enough to supply enough cutting fluid to reduce the influence of thermal deformation on workpiece and improve the quality of machining.
Q:How big is the smallest bit?
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:What are the brands of homemade twist drills?
Twist drills are made of many different materials, and different materials have different hardness. The angle or just ordinary relatively low hardness, so in theory, as long as the geometric angle of precise angle quasi good drill, only poor material life is low. Because of this, so many people like fraudulent use of materials, or connecting the handle with other materials, the head good. But now there is a process called roast yellow, this process after the connection part of the defect, a look at it.
Q:How to polish drill bit?
Steel plate drilling should be light pressure, at any time pouring oil or water cooling.The impact of drilling concrete, to hold the drill, at any time will bring out the slag eye, to travel in a time not too long. Pay attention to the pipe line in the wall. Pay attention to the steel bar on the wall, it will drill body belt turn, wounding.
Q:I want to be in the stainless steel frame and fixed drill a few screws, with what bit and screw
However, Hui Shang building materials network reminds you that when drilling, the speed should be lower, the back angle of the drill to be larger, and side grinding, grinding narrow, in order to reduce the side blade and hole wall friction. In addition, when drilling, it is best to add some vinegar to the drill bit, so it will be easier to drill holes.
Q:What is the minimum specification for hollow drill bits?
The minimum specifications of the hollow bit are: 12mm in diameter, depth of drilling 25mm and depth of 35mm

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