ER collet chuck is also called ER collet adapter or holders.
Made from 20MnCr5 & case hardened to 55HRC approx.
Assured premium quality.
An ER collet is a CNC tool holder for rnd mills drills etcin mill,they can also be used in a small micro lathe in the place of a chuck to clamp the workpiece. the ER collet system consists of a main shaft or body with a thread end a nut which screws onto the main body and interchangeable collets.
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