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Address: No. 2861 / 22-23, 2nd Floor, Neelkanth Market, Ghasi RAM Street, Sirkiwalan, Hauz Qazi, New Delhi, New Delhi, Delhi, India, 110006
Country: [India]
Phone: - - 91-11-23251180
Mobile: - +(91)-9795875331
Fax: - - 91-11-23251180
home products Center Drill

Center Drill

Product Details:

Keywords Saw, Center Drill, , SHRI SAI TRADING COMPANY, India
Category Tools > Hand Tools >Saw
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Detailed Product Description

Center drill bits are used in metal working to provide a starting hole for a larger-sized drill bit or to make a conical indentation in the end of a workpiece in which to mount a lathe center. In either use, the name seems appropriate, as the drill is either establishing the center of a hole or making a conical hole for a lathe center. However, the true purpose of a center drill is the latter task, while the former task is best done with a spotting drill (as explained in detail below). Nevertheless, because of the frequent lumping together of both the terminology and the tool use, suppliers may call center drills combined-drill-and-countersinks in order to make unambiguously clear what product is being ordered.

Use in making holes for lathe centers

Centre drills are meant to create a conical hole for "between centres" manufacturing processes (typically lathe or cylindrical-grinder work). That is, they provide a location for a (live, dead, or driven) center to locate the part about an axis. A workpiece machined between centers can be safely removed from one process (perhaps turning in a lathe) and set up in a later process (perhaps a grinding operation) with what is often a negligible loss in the co-axiality of features.

Center Drill

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