The TC120, TC121 and TC122 Supreme new blind hole taps have been introduced by Walter.

WAL 323Click image to enlarge

These new entries in the Walter Supreme line combine maximum performance in steel with improved tool life and process reliability. They’ve been specially developed for machining steel, and cover all tensile strengths from 43-200 kpsi.

The TC120 Supreme with a 45° helix angle makes it possible to reliably produce threads up to 3 × DN in soft and medium-strength steels (ISO P, N). It stands out due to its partial TiN coating in the chamfer section which increases wear resistance and tool life, special geometry, good chip evacuation and an extra-long threaded section that results in significantly less fracturing in the guide section. It is available with internal cooling for improved chip evacuation.

The TC121 Supreme tap is suitable for threads up to 2.5 × DN in steels with medium tensile strengths between 112-177 kpsi (ISO P, M, K, N). The tap features a 40° helix angle and a geometry which ensures tightly rolled chips, TiAIN or TiCN coating, and combines maximum performance in steel in the medium strength range and maximum tool life with a high level of process reliability, with internal cooling for improved chip control.

The TC122 Supreme with a 15° helix angle ensures a long tool life in medium- to high-strength ISO steel and cast-iron materials. It can produce thread depths up to 1.5 × DN without internal cooling, while up to 2.5 × DN is possible with internal cooling. Internal cooling increases process reliability by flushing out the chips. This hardened tap features a special geometry for extremely short chips, as well as a TiCN coating.

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