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

‍

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: 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 are the differences between the center drill and the twist drill in its structure and use?: 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: What's the difference between a UC drill and an ST bit?: If it's UC's problem, it's simple, directly on the phone's UC site, and then there's a self-help help center that can find all sorts of problem solutions for yourself

Q: 8mm iron expansion bolts with few drilling drill mm?: It's a gross mistake to say 8 mm punching. As with a hammer smashed bolt can not. Strictly speaking, 12 mm bit should be used, but if the expansion bolt is not standard, you need to drill 10 millimeters, then twist the hole, it is best to use caliper to measure the diameter of the bolt and then decide

Q: Impact drill and electric hammer drill is what is the difference: 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 in the hammer on the opening of materials of high efficiency, but it is not a hole in the metal.

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: Specification of plastic expansion plug and collocation of drill bits: General use of drilling bit is slightly smaller than the expansion plug specifications, with 3.8 4 mm drill bit expansion plug can. If is the same specifications for concrete especially hard objects, if a bit drilling specifications, pulling the hammer a little shake.

Q: Use an electric drill or hammer installed TV rack?: Percussive drills work by rotating and impacting. A single shock is very slight, but a shock frequency of more than 40000 minutes per minute can produce continuous force. Used of natural stones or concrete. When the impact drill works, the drill chuck is provided with an adjusting knob, which can be adjusted in two ways: an ordinary hand drill and an impact drill. But the impact of drilling is the use of internal gear to achieve mutual beat of impact, but the impact is far less than the hammer. It is not suitable for drilling reinforced concrete.

Q: How long the hand-held electric hammer drill: Hard alloy electric hammer drill body made of high quality alloy steel, the knife head is welded with hard alloy.

Q: Sharpening of drill angle when machining different materials: For the sharpening of the drill, we should grind the drill at different angles according to the needs of the drilling. For example, a bit of drill bit drilled to a relatively hard material can grind larger (i.e. flat);

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