Quick-Change Collet Chuck Doubles as Mandrel

SMW Autoblok’s hybrid Comot-AZ quick-change collet chuck features industry-standard diameter capacities of 42, 65 and 100 mm to accommodate a variety of workpiece sizes. The company says it is well-suited for bar and tubular stock machining that requires multiple changeovers daily. 

The Comot-AZ can be used in three ways: for OD machining using standard collets; for greater accuracy using high-precision collets with Comot-AZ/PA; or as an expanding mandrel for ID clamping using the EMX series. 

The chuck can be used for hard turning, gear grinding, drilling, milling and more. It provides low-deformation clamping of thin-walled workpieces and offers a selection of standard collets available in round, square, hexagonal and special configurations as needed.

The optional Comot-AZ/PA is said to enable users to change from a standard collet to a high-precision collet for holding workpieces from 3 to 100 mm with accuracy and repeatability. The EMX series extension mandrel is also available for internal workpiece fixturing.

For automated loading, Comot-AZ provides air sensing to ensure that the part is seated properly before the machine cycle starts. Other advantages include radial fine adjustment and a case-hardened body as well as internal parts for high resistance and long life.