The ground, solid-carbide thread mills have a premium micrograin carbide and TiCN coatings for long tool life and multiple spiral flutes designed to eliminate chatter. The design incorporates a large cutter diameter with high profile correction to ensure true-to-gage threads and an extended milling section that allows for longer thread lengths as required for API line pipe threads.
The indexible insert thread mills, for tapered thread cutting applications, have hardened steel bodies with CNC-ground Weldon-type shanks or come in three bar sizes with integral CAT50 shanks. Internal coolant supplies exit radially at the insert cutting edge to optimize cooling, thread quality, tool life and to effectively evacuate small chips.
The inserts are made of micrograin carbide with a choice of either TiN or TiAlN coatings. They are ground with rake and relief angles that tolerate high chip-per-tooth loads. The company says the free-cutting geometry produces low radial cutting pressure to ensure true-to-gage threads. Each insert has four useable cutting edges for long tool life. Precision pockets with close dimensional tolerances are machined into the bodies' steel end faces to ensure precise insert positioning.