Introduced for CoroMill 331 is -M30 geometry, which is designed to optimise the groove milling of steel and cast-iron automotive parts. Available for size 11 inserts offering radius dimensions from 1.5 to 3.0 mm, -M30 geometry is defined by its light-cutting action. This tough geometry is particularly beneficial when machine shops want to boost security in weak set-up or long overhang applications, where it is said to provide reliability and increased competitiveness. Grade availability includes GC1130, GC1020, GC3040 and the latest GC4330 for steel milling.

Also launched is -L50 geometry, which is aimed at aerospace component machining, as well as parts in the oil and gas industry. Offered on size 11 inserts with radius dimensions from 3.0 to 6.3 mm, light-cutting action is also the principal attribute of the tough and sharp -L50 geometry, making it suitable for materials such as stainless steel, nickel-based super alloys and titanium. Optimised for use in good operating conditions and heavy application areas, GC1040, GC2040 and S30T are the available grade options.

“Groove milling is one of the most common application areas within indexable milling, and the new geometries are specifically designed to meet the demands of machine shops looking to improve process security, quality and cost,” says Jenny Häll Jansson, global product manager - milling, Sandvik Coromant.

As a point of note, alongside -M30 and -L50, size 8, 11 and 14 inserts with a 4.0 mm radius are being made available as standard in -WM geometry. Again intended to boost the milling of automotive parts, grade options include GC1130, GC1020, GC3040 and GC4330.

Far from just groove milling, CoroMill 331 is a universal concept that can provide machining in numerous face, shoulder, and side and face milling operations across all industry segments. A large assortment covers an extensive choice of diameters, widths, insert geometries, corner radii and grades.