Center Drill Holder

It gets into spaces that others can't even begin to. Because the holder is configured and located in the lathe turret like an OD turning tool, the only thing protruding in front of the turret face is the tip of the center drill. As a result, the center drill can be programmed to drop into the space between the end of the part to be center drilled and the tip of the live center in the retracted position, a space less than the travel on most tailstock quills. So, for shaft work, the part can be faced and center drilled and then the tailstock quill can be advanced to support the workpiece between centers for heavy duty OD finishing. The time consuming process of stopping the machine to reposition either the workpiece or the tailstock during the machining cycle is completely eliminated.

Unlike other center drill holding devices such as drill chucks or collet chucks, our center drill holder does not gobble up valuable Z-axis travel enabling the user to more fully utilize the full travel potential of the turning center.

Available in shank sizes of 3/4", 1", and 1-1/4", the EDI Center Drill Holder is manufactured from prehardened 4140 steel and is finished with a high quality black oxide coating for years of trouble-free service.

The 3/4" and 1" kits come complete with 1/2" OD bushings to accommodate standard center drills from #1 to #6, Bell type center drills for #11 to #16 and spotting centers up to 1/2" diameter.

The 1-1/4" kit comes complete with (5) standard 3/4" OD bushings, or if needed, 5 sizes of your choice.

Part Number	Description
CDH-750-500	3/4" shank / 1/2" Max Center Diameter
CDH1-500	1" shank / 1'2" Max. Center Diameter
CDH1-250-750	1-1/4" shank / 3/4" Max. Center Diameter