Comot-AZ Collet Chuck Accommodates Different Capacities, Uses

SMW Autoblok’s hybrid Comot-AZ quick-change collet chuck features industry-standard diameter capacities of 42 mm, 65 mm, and 100 mm to accommodate a variety of workpiece sizes. The chuck is well suited for bar and tubular stock machining which requires multiple, daily changeovers. It can be used in three ways: OD machining using standard collets; greater accuracy using high-precision collets; or quickly transforming into an expanding mandrel for ID clamping using the EMX series.

The company says the collet chuck can be used for hard turning, gear grinding, drilling, milling and more. The collet is said to provide low deformation clamping of thin-walled workpieces and offers a large selection of standard collets available in round, square, hexagonal and special configurations when needed for virtually all spindle sizes.

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

For automated loading, the hybrid collet also provides air sensing to ensure the part is seated properly before the machine cycle starts. Other advantages include radial fine adjustment, and a case-hardened body and internal parts for high resistance and longer life, the company says.