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The Morse taper end fits into a machine spindle and the Jacobs taper end is compatible with a Jacobs taper drill chuck.
For better control when drilling small holes with a drill press or milling machine, the attachment on these arbors lets you apply light feed pressure with your fingers while the machine rotates the bit.
These arbors are compatible with straight spindles, which are most often found on manual lathes and CNC machines.
Use with R8 taper spindles which are most often found on manual milling machines.
A ball-bearing design provides increased gripping force to keep bits from slipping, which allows these chucks to take on high-torque drilling applications. Also known as super chucks.
Use the included spanner wrench to tighten the chuck for up to three times the gripping torque of hand tightening.
After installing the R8 body in the milling machine spindle, tool holders can be switched out in seconds.