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The CARMEX 22ER6ACMEP30 is a solid carbide, uncoated laydown threading insert designed for cutting external Acme threads at 6 threads per inch (TPI). Built to the 22 ER insert style, it features a bright, uncoated P30 carbide grade suited for threading operations in steel workpieces. With a 1/2-inch inscribed circle and a thickness of 0.187 inches, this insert seats securely in compatible laydown-style toolholders. It produces right-hand external Acme thread forms and is intended for use by machinists and tool-and-die professionals requiring precise, repeatable thread geometry on threaded rod, lead screws, and similar components.
This insert is applied in CNC turning centers and manual lathes where Acme thread profiles are required. Acme threads are commonly found in power transmission applications such as lead screws, jack screws, and vises. The 22ER6ACMEP30 is well suited for shops producing or repairing steel components that demand accurate Acme thread forms at 6 TPI. Its uncoated carbide construction makes it a practical choice for low-speed threading passes or applications where coating adhesion could interfere with tight tolerances.
Designed as an OEM-style replacement or standard production insert compatible with 22 ER series laydown threading toolholders accepting a 1/2-inch inscribed circle insert.
Installation should be performed by a qualified machinist following the toolholder manufacturer's clamping specifications. Ensure the machine spindle is fully stopped and locked out before seating or removing the insert. Confirm proper insert orientation for right-hand external threading before beginning a cut. Do not exceed the toolholder's rated depth of cut or feed rate for threading applications.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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