The use of collet chucks for EOC collets represents a highly advantageous technical choice for applications where rigidity, clamping precision, and torque transmission are crucial in machining operations. When mounted on machining centers, these chucks allow tool clamping through EOC collets characterized by a narrow closure angle (6° total), capable of providing high and consistent clamping force along the entire contact surface of the tool shank. This feature gives the system excellent rigidity, making it particularly suitable for roughing operations, deep cuts, or large-diameter tools where system stability is essential to achieve reliable and repeatable results.

 

Chucks designed for EOC collets with DIN69871 shank are available in various sizes (e.g., SK40, SK50) to perfectly adapt to every type of machine tool in the workshop. The DIN69871 standard ensures high compatibility with both CNC and traditional machines, whether horizontal or vertical.

 

An additional strength of these chucks lies in their readiness for coolant flow according to the AD+B standard: this means that coolant can be conveyed both centrally through the spindle axis and radially via dedicated flange outlets. This dual configuration enables optimal tool cooling, improved chip evacuation, and significantly reduced tool wear, thereby enhancing the longevity and quality of the machining process.

 

EOC collets available on the market cover several standard sizes, such as EOC 25, EOC 32, EOC 40, each designed to accommodate cylindrical shank tools with very tight dimensional tolerances, generally under 0.05 mm. This makes the system ideal for clamping standardized tools, ensuring shank concentricity within 0.01 mm and uniform clamping force distribution. Moreover, due to the simple construction of the collet and the direct mechanical closure via locknut, tool changes are quick and reliable, with no need for special tools or complex torque wrenches.

 

The combination of the high rigidity of EOC collets, the precision of the DIN69871 shank, and the intelligent coolant management makes these chucks a complete and professional solution for all workshops aiming to improve their production performance and machining quality on any type of material.

 

For any technical needs, guidance in selecting the most suitable chuck, or application advice, Tadaah offers its specialized technical department to support every customer with expertise and promptness.

 

EOC clamp size	Collets range	Supplied with clamping nut
EOC16	2 ÷ 16	EOC Standard
EOC25	2 ÷ 25	EOC Standard
EOC32	3 ÷ 32	EOC Standard