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Geometry. The special shape of the cutting edge crest allows this tool to maintain a high degree of pitch diameter and true alignment accuracy.
Chips move forward through the helical taper lead area and are collected in the face relief (central chip hole).
This tap offers the advantages of cutting edge geometry for through hole tapping, therefore blind holes can be tapped down to the bottom of the hole.
Material. Designed for high-tensile and heat-treated steels, alloyed steel castings and stainless materials. Tensile strength should not exceed 174,000 psi (38 Rc). In case of higher tensile strength and pitch above 0.23 inches tap sets Robust 2X-VA have to be used.
Machining. As the cutting flutes are worked up to the guide section only, the coolant flow is cut off after completion of the first full operation. Therefore, we recommend that a coat of viscous cutting oil or a cutting paste be used in the hole. Blind holes should be filled with suitable cutting oil for optimum results. |
