Indexable-Insert Tools

Indexable-Insert Tools

Dormer Pramet has expanded its indexable offer for turning and milling applications.

April 28, 2016

Dormer Pramet has expanded its indexable offer for turning and milling applications.


Designed for rough forging and castings, the new Pramet HR2 chipbreaker features a positive, stable geometry for improved tool life and performance. The single-sided inserts are ideal for working in steels, cast irons and stainless steels. The HR2 delivers increased productivity with reliable chip formation and evacuation at high feeds.

The NMR chipbreaker is another addition to the range, a double-sided chip breakers specifically design for stainless steel operations. This new geometry joins the current double-sided range, which includes the NM (medium turning) and NF (finishing turning) chipbreakers.​

The new W-FM and W-NM wiper inserts feature a positive front land for smooth machining. In straight turning and facing operations, the smoothing effect of the wiper results in improved quality of surface roughness. Single-sided positive inserts with the W-FM positive geometry are suitable for stainless steel and steels. The double-sided negative inserts with the W-NM highly positive geometry are ideal for machining stainless steel and low carbon steels.

The versatile T9226 is the newest grade and replaces the Pramet 6630 grade in heavy roughing and peeling operations. With reduced adhesion to the workpiece and greater cutting edge strength, the T9226 grade delivers operational reliability and longer tool life, according to the company.

The newest milling grade is the M6330, developed specifically to achieve longer cutting edge durability and reliability in a range of DTMM with and without coolant. Particularly suited to adverse cutting conditions, including interrupted cutting, the M6330 is available with many of Pramet's most popular inserts, including the ADMX, HNGX, LNGX, LNMU, OEHT and numerous other styles.

Glossary terms in this article

  • stainless steels
    Stainless steels possess high strength, heat resistance, excellent workability and erosion resistance. Four general classes have been developed to cover a range of mechanical and p…
  • carbon steels
    Known as unalloyed steels and plain carbon steels. Contains, in addition to iron and carbon, manganese, phosphorus and sulfur. Characterized as low carbon, medium carbon, high carb…
  • chipbreaker
    Groove or other tool geometry that breaks chips into small fragments as they come off the workpiece. Designed to prevent chips from becoming so long that they are difficult to cont…
  • cast irons
    Cast ferrous alloys containing carbon in excess of solubility in austenite that exists in the alloy at the eutectic temperature. Cast irons include gray cast iron, white cast iron…