Thread Chaser Insert Holder Designed for Precision, Rigidity

Seco’s P1 and P5 thread chaser insert holders feature a special carbide-pin locating system combined with a patented pocket seat surface pattern and high-pressure coolant capabilities, enabling high precision and rigidity in threading operations that involve tough materials.

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Seco’s P1 and P5 thread chaser insert holders feature a special carbide-pin locating system combined with a patented pocket seat surface pattern and high-pressure coolant capabilities, enabling high precision and rigidity in threading operations that involve tough materials.

Working in unison with top and axial clamps, the holder’s locating system uses two horizontally oriented pins that rest at specific distances from the bottom of the insert pocket. This two-pin system ensures precise insert positioning from insert to insert, as well as contributes to the holder’s increased rigidity and insert support. As a result, the holder helps reduce the number of threading passes required to produce a full thread profile, the company says. 

The holder’s pocket seat surface pattern features milled scallops that provide additional chaser insert support. When the insert is mounted in the pocket, the clamping force acts on the scallop pattern and work-hardens the seat surface to a hardness of 54HRC.

High-pressure coolant is directed at key cutting areas of the insert, entering the holder from the back end, travelling through the insert cavity directly to the insert’s chipformer and into the channels between each tooth. Maximum output pressure is 3,046 psi (210 bar).

The P1 holder handles inserts 625" (15.875-mm) thick, and the P5 accommodates 0.984" (25-mm) thickness. Chipformers are available in 0.156" (3.97-mm) and 0.124" (3.18-mm) sizes.