Thread turning insert FANAR 22 ER 4.0 TR BMA, indexable carbide insert for external threading

Indexable thread turning insert FANAR 22 ER 4.0 TR BMA is designed for external threading operations on lathes and CNC turning centers. The insert corresponds to a 22 size with a 4.0 mm thread profile and TR geometry, supplied as a replaceable carbide tip that mounts in compatible toolholders to perform repeated precision thread turning with easy indexing and economical tool usage.

Advantages

The FANAR 22 ER 4.0 TR BMA insert provides stable cutting performance and consistent thread form thanks to carbide construction and a geometry optimized for external threading. Its indexable design reduces downtime by enabling quick rotation or replacement of the tip without regrinding, and the compact 22 size supports access to a range of workpiece diameters. The insert is suitable for production environments requiring repeatability and predictable tool life.

Suitable for

• External metric thread turning on lathes and CNC machines
• Series production with fast index changes
• Repair and maintenance of threaded components
• Applications where carbide inserts are preferred for wear resistance

Key specifications

• Insert size: 22 (nominal series size for compatible holders)
• Thread profile pitch: 4.0 mm metric thread
• Geometry: TR form optimized for external threading
• Material: indexable carbide cutting tip
• Mounting: designed for use in compatible indexable turning toolholders

How to use

Install the FANAR 22 ER 4.0 TR BMA insert into a matching external threading toolholder and secure it according to the holder manufacturer’s instructions. Set machine parameters for the workpiece material, entering with appropriate spindle speed and feed so that each pass achieves the required thread depth without excessive cutting forces. Use coolant or cutting fluid as recommended for the material and carbide insert to manage heat and improve surface finish. When wear or damage occurs, rotate the insert to the next index or replace it to restore thread quality.

Usage recommendations

For best results, select a toolholder specifically designed for 22-series external threading inserts and verify clamp torque to maintain accurate thread geometry. Adjust cutting speeds and feeds according to the workpiece material—lower speeds for stainless steels and higher speeds for non-ferrous alloys—and employ appropriate coolant to extend insert life and maintain consistent thread form.