Rawiri Tapping Holder Collet Chuck Shank with Overload Torsion Protection Telescopic Buffer BT30?GT12?125L

Precision tapping holder designed to improve tool life and machining results. The body is manufactured to a 0.01mm accuracy for excellent concentricity, better processing outcomes, and higher efficiency. All holders are fitted with high-accuracy ball guide sleeves that reduce wear and further increase concentricity. These sleeves help prevent issues from excessively fast feeding or retraction during tapping, and reduce the risk of tap breakage and deformation under pressure control. The inner bore is finely ground and bright using a self-developed grinding stone. Heat treatment is performed in an advanced vacuum quenching furnace to achieve carbonitriding, which raises the hardness of the tool holder and improves body accuracy. Built-in torsion overload protection and a telescopic buffer help extend tap life, lower machine parameter demands, and enhance thread accuracy and surface finish. Micro-compensation synchronous tapping and optimized extrusion taps boost processing efficiency and make the holder especially suitable for fine teeth and inch teeth.