Brace (tool)

A Bohrkurbel (also: brace or crank drill ) is a hand drill, the drilling manually crank technology holes (usually in wood). Your cranked axle by hand over a present on her, loosely mounted, outside the drilling axis circular handle role (usually from beech) driven. With versions in bold too, is mounted on ball bearings.

Operation

About the, the drill chuck (max. depending on the design span 16 mm, 2 -. 4 jaws ) opposing ball-bearing breast button ( also mostly from beech), the guidance of the drill and the feed will be provided. The so-called chest button, which is located in the drilling axis and in which the cranked axle turns, to potentially allow the contact pressure with the chest and so where necessary, thereby free up the non kurbelnde hand (eg to hold / counter holding the workpiece, self- assurance in difficult working conditions ). At the chuck are two switchable ratchets, which have the effect of a gun and thus help working under spatially more restricted conditions allow. The cantilevered bracket, take you through the leverage and depending on human power greater torque produced than other non-electric hand drills; and therefore can significantly deeper and wider drilling holes than this. Even compared to some electric hand drill, this reached a higher torque, but this machine also drills considerably slower. An electric motor driven hand drill can easily get to 2,000 or more turns per minute. A Bohrkurbel need for a same borehole therefore much longer. Also, it is hard to keep a brace when preparing a hole perfectly in the desired drilling angle, which makes them unsuitable for precision drilling. In addition to drills this simple machine can also record bitbestückte bit holder and bits long and thus serve the screws. Main advantage of Bohrkurbel to electric drills are the relatively low purchase price and the independence of electric current. Also, the unit takes up very little space and works almost silently. Their robust simplicity makes it reliable and largely maintenance free - only rare oils of ball bearings and the chuck are required. With appropriate material quality, processing and storage in the dry the Bohrkurbel lasts forever. It is both in manufacturing as well as managing the disposal easier and more environmentally friendly than their electric competitor. Their low image and brand value make their theft on top of that comparatively unlikely.

• Drill