The Econ LN from Chesterfield-based Dormer Pramet (www.dormerpramet.com) has been designed as a cost-effective and versatile milling option that can undertake numerous operations in most materials, while still producing high levels of surface finish.

Positive axial geometry on this universal 90deg cutter ensures lower cutting forces and smoother machining in steel, cast iron, stainless steel, non-ferrous metals and hardened materials.

Econ LN cutters provide an internal cooling capability close to the cutting edges, a combination of wiper inserts,
secure clamping and reduced power consumption. Compatible with the cutter are Dormer Pramet’s LNGX 12 and LNMU 16 inserts, which provide four cutting edges.

LNGX 12 inserts support helical interpolation, ramping and progressive plunging, while LNMU 16 inserts are said to deliver long tool life when machining steel and cast iron.

In a recent example in North America, an end user was face-milling gas-turbine end caps made of stainless steel on a large horizontal mill.

An Econ LN 80mm face mill with LNGX 12 inserts allowed the customer to use a feed rate that was 44% higher than the previous option.

The improved cutting data meant that the company ran the equivalent of three finished parts on the first edge, with the insert showing little to no wear.

Furthermore, the Econ LN reduced the cycle time by 18min for this operation alone.