Multisize Straight Shank Twist Drill Bits For Drilling Metal Iron and Aluminum Drill Bit

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Multisize Straight Shank Twist Drill Bits For Drilling Metal Iron and Aluminum Drill Bit

Q: How big expansion screw does the 6mm bit have?: 6mm drills are generally equipped with 5mm expansion screws (the smallest specification).The relationship between the drill bit and the expansion screw is the drill diameter = the expansion screw diameter +2mm. For example, the expansion screw of 6mm shall be opened with 8mm drill bit.

Q: 1 inches of steel plate, what drill can drill through?: Mainly used in drilling machines, lathes, flashlights and other mechanical equipment for the processing of different diameter aperture. Generally speaking, twist drills are straight shank and taper shank twist drills. Straight shank drill: suitable for drilling diameter psi below 13.0mm small diameter, taper shank twist drill for aperture and torque big hole.

Q: What is the standard angle of the drill bit?: For example, HSS high-speed steel drill bit: vertex angle is generally 118 degrees, sometimes greater than 130 degrees; sharp blade; accuracy (blade height difference, symmetry, jitter) requirements are relatively low. There are many ways to correct the transverse blade. Hole roughing and less demanding, we generally use more. HM carbide drills: the top angle is generally 140 degrees; straight fluted drills are usually 130 degrees; and three edge drills are usually 150 degrees. The blade and nose (edge) are not sharp, often passivated, or inverted blade and chamfering, and require high accuracy. The horizontal edge is often into a S- shape, in favor of chip breaking

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: By drilling with a bit, why is the hole drilled straight 2 larger than the diameter of the drill?: Drill bit, drill out of the hole than the drill diameter, because drilling cuttings will increase the extrusion aperture; at the same time, for the convenience of a chip it is necessary to improve bit will increase; if the concentricity is not good, it will increase more.

Q: Do you have any special drill for aluminum alloy?: There are aluminum alloy bit, select M42, M35 or 6542 bit.

Q: How big is the screw hole at the back of the torch chuck? Is it a rebound?: If the chuck is to be assembled, stop the spindle from turning, and some have a rectangular edge that clamps the parallel edge with a thin, corresponding opening.

Q: What is a two center drill? What's the function?: There are two drill centers, one for passing through the casing and one for enlarging the diameterHey！ I can't help it! Specializing in the production of mine accessories. Cutter, cutter, drill bits, diamond mine anchor drill, cross wind drill, spiral drill pipe, anchor, mining machinery fittings, rock drilling tools

Q: What's the angle of a standard twist drill?: How much is the standard twist drill angle - 118 degrees, drawing (the threaded hole is a blind hole at 120 degrees) according to the draw.

Q: What is the four hole five hole hammer: Four: refers to the pit slot number is four at the handle of hammer drill hole, two key and two ball groove, used in the four pit on the hammer. This drill is usually used in the medium electric hammer.

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