Tungaloy Launches Indexable Thread Milling Line For Tapered Pipe Threads

Tungaloy has expanded its ThreadMilling series with the release of an indexable thread milling solution for tapered pipe threads.

The indexable thread milling system allows various types of threading insert(s) to be fitted on a single cutter body, making the operations extremely economical. With the new multipoint threading inserts and cutter bodies, thread milling for NPT and NPTF threads as well as BSPT thread are now possible on machining centres using its spiral interpolation feature.

Thread milling techniques, in many respects, offer greater advantages over tapping with reduced cutting loads for higher reliability. Solid carbide taps pose higher risk of tool breakage, while HSS taps offer shorter tool life. In addition, insert screws are designed not to detach from the cutter body when completely loosened during insert setup so operators will have no concern dropping or losing the tiny screws in the machine.

There are three types of tapered threads available: NPT (for 11.5 and 14 TPIs) and NPTF (for 14 TPI) of the US standard as well as BSPT (for 11 and 14 TPIs), which is common in Asian markets. The threading inserts provide higher reliability and longer tool life over tapping method, and eliminate concerns for dropping or losing tiny insert screws during tool setup.

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