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Center Drills

What is Center Drills?
Center drill bits are used in metalworking 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 bit 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 bit is the latter task, while the former task is best done with a spotting drill bit .

HSS Center Drills, Plain Type


1. Plain Type HSS Center Drills are designed to produce accurate center holes in components which require machining between centers.
2. Spiral Flute, right hand, 60º included angle.
3.Left hand , 82º & 90º included angle are available.
4.Milled, Fully Ground are available.

HSS Center Drills, Bell Type


1. Bell Type HSS Center Drills are designed with an additional small 120º chamfer to protect the edges of the 60º hole.
2. Spiral Flute, right hand, 120º angle.
3.Milled, Fully Ground are available.

HSS Center Drills, DIN333 Type R


1. Type R HSS Center Drills are designed to reduce the bearing of the center hole and provide a protected centering seat while reducing the risk of breakage.
2. Spiral Flute, right hand.
3.Milled, Fully Ground are available.

 

For more details on Special Tools, please check catalogue or contact us.