Pafana TNMG 160408 STK FM30S indexable carbide turning insert TNMG 160408

Pafana TNMG 160408 STK FM30S indexable carbide turning insert TNMG 160408 is a rhombic negative-geometry cutting tip engineered for metal turning operations. The insert fits standard TNMG toolholders and is intended for external and internal turning, profiling and light roughing. Manufactured in a carbide grade specified as FM30S, it is designed to provide predictable wear behaviour and consistent cutting performance on a variety of steels and common alloys when the FM30S grade is appropriate.

Advantages

The rhombic TNMG shape offers versatile approach angles for contouring and finishing in a single tool position. Negative geometry combined with a carbide substrate provides strength at the cutting edge and resistance to chipping during interrupted cuts. The indexable design allows quick rotation or replacement of cutting edges, reducing downtime and toolholder regrinding. Consistent grade characteristics deliver stable cutting performance across a range of turning tasks.

Suitable for

• External turning of steels and general-purpose alloys
• Internal boring and light internal profiling
• Profiling and form turning with rhombic insert geometry
• Light to medium roughing operations where FM30S carbide is recommended

Key specifications

• Insert geometry: rhombic, negative-geometry TNMG form
• Cutting material: sintered carbide in FM30S grade
• Typical applications: external and internal turning, profiling, light roughing
• Indexable design with multiple usable cutting edges
• Compatibility: fits standard TNMG toolholders and clamping systems

How to use

Install the insert into a compatible TNMG toolholder and secure according to the toolholder manufacturer's instructions, ensuring correct seating and clamping torque. Select cutting parameters—cutting speed, feed and depth of cut—appropriate for the workpiece material and for the FM30S carbide grade. Use coolant or cutting fluid as required by the workpiece and machining operation. When an edge reaches wear limits or becomes damaged, index the insert to a fresh edge or replace it to maintain dimensional accuracy and surface finish.

Usage recommendations

For optimal tool life with FM30S carbide, use moderate cutting speeds and progressive feed increases when roughing; employ light finishing passes for improved surface quality. Monitor edge condition during interrupted cuts and when machining hard inclusions, and ensure proper clamping in the toolholder to prevent vibration and edge chipping.