Tap Holding System With One-Touch Axial Adjustment

NT USA Corporation's STM tap holding system features one-touch axial adjustment without the need for tools. With the system, tap projection length can be adjusted simply by hand-rotating the guide ring on the outside of the toolholder. Axial adjustment range varies depending on the size of the STM toolholder, but is as high as 15 mm (0.

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NT USA Corporation's STM tap holding system features one-touch axial adjustment without the need for tools. With the system, tap projection length can be adjusted simply by hand-rotating the guide ring on the outside of the toolholder. Axial adjustment range varies depending on the size of the STM toolholder, but is as high as 15 mm (0.591").

Taps are securely held in place by one-piece steel spring collets. Taps are further prevented from rotating by interchangeable preset drivers that secure the squares on the tap shanks. The combination of spring collets and interchangeable preset drivers provides two benefits: a variety of tap sizes can be used with a single toolholder and the system's higher accuracy than traditional spring-type collets.

The tap holding system is also designed to accommodate high-pressure coolant. The system can accommodate 1,000 psi of coolant pressure for tap sizes less than 19 mm (0.748") and 725 psi of coolant pressure for tap sizes 20 mm (0.787") and above. Coolant can be delivered either through the tap or along the side of the tap using the STM's one-piece steel collets.

The system is designed for use with machines that have a synchronized tapping function. The toolholders are available in CT, BT, HSK and straight shank styles. Tap collets are available to accommodate metric, unified and pipe-taper thread taps in a variety of sizes up to M30 (metric), 1 1/8 (unified) or 3/4 (pipe taper).

 

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