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

HSS-E annular cutter with FEIN Quick-IN DNHF-3 System 1

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

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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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DNHF-3

D.O.C. 35mm
Unit：mm
◎ 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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Type	Size
DNHF-30120	12*35
DNHF-30130	13*35
DNHF-30140	14*35
……‍	……
DNHF-30580	58*35
‍DNHF-30590	59*35
DNHF-30600‍‍	60*35‍

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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:Woodworking drills, classification, woodworking drills are those categories, the more specific the better: Because the wood is soft, so in the material above, generally choose easy processing brand S45C.However, some foreign countries use high-speed steel to manufacture woodworking drills in order to improve the tool efficiency.

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:The difference between steel teeth and inserted cone bit: The inserted three bit bit is a new kind of wear-resistant material with high strength and high toughness alloy tooth and steel tooth bit surface. It can increase the drilling speed of the bit while maintaining the high mechanical drilling speed of the steel tooth bit. Different specifications of cone bit, three cone bit, Jianghan rock bit, drilling wells with cone drill, oil cone bit, mine rock bit, geological rock bit, gas wells cone bit, PDC bit, diamond bit, imported composite drill, 5 wing PDC drill bit, 4 wing PDC drill bit, 8 blade PDC bit.

Q:How do you tell which materials are used in the test?: Cutting different materials depends more on the shape of the cutting edge. Different cutting edges are used for different materials. Experience is very important. Take a look at the schematic diagram of the drill edges.

Q:At present, the strongest oil drill bit, the deepest can drill how many meters?: Correspondingly, the specifications of ultra deep drilling machine can be divided into 6000 meters, 7000 meters, 8000 meters, 9000 meters, 10000 meters, 12000 meters and 15000 meters. The United States is the country with the longest history, the largest workload and the highest technology level in the world. It also has the largest number of deep drilling rigs. There are about more than 90 more than 9000 meters deep drilling in the world, the United States accounted for more than 80, of which 8 drilling more than 10668 meters deep.

Q:Why is the drill angle 118 degrees?: Standard angle has 118, 120, 130, 135, 140, processing material is different, drill top angle is not the same.

Q:By drilling with a bit, why is the hole drilled straight 2 larger than the diameter of the drill?: The drilling depth - to determine the guiding edge and drilling parameters of the drill: shallow ordinary drill, a set of parameters, if more than 10 long deep hole diameter ratio, cooling the drill bit will choose to guide blade, and soon after the first slow step feed, with 2 sets of parameters, the other through hole, then reduce the parameters in the proposal through;

Q:How do I take out an electric drill bit?: This kind of electric drill in your picture makes the end of the drill (zigzag) and the electric drill connect to the direction of the electric drill, then you can take it out

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.

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