Niagara Cutter ST540 from Seco Extends End Mill's Versatility
Seco Tools has expanded Niagara Cutter’s Stabilizer product line with the five-flute ST540 end mill designed to increase performance and versatility. The STS540, STSN540, STR540, STRN540 and STRCS540 solid carbide end mills together are said to provide a complete set of tools for machining processes ranging from slot milling to side mill finishing as well as operations involving up to 40% radial stepovers for fast material removal thanks to strong cutting edges and full eccentric reliefs.
In addition to smaller-diameter tools for high-performance milling and 140 new inch sizes, including a necked version for long-reach applications, the expansion also includes advanced helical chip splitters developed by Niagara Cutter to improve chip evacuation in even the most challenging applications. A special offset design is said to improve surface finish and make the tool an all-in-one end mill solution that can handle both roughing and finishing operations and is effective in materials including steel, cast iron, stainless steels and superalloys.
Liquid coolant offers advantages unrelated to temperature. Forced air is the fluid of choice in this shop...but even so, conventional coolant can't be eliminated entirely.
To make the transition to hard turning, you'll need to switch from carbide to CBN inserts, but that is easier (and more economical) than you might think. It's making the jump to much higher surface speeds that might scare you off. It needn't. Here's why.
Running rotary milling cutters at the proper speeds and feeds is critical to obtaining long tool life and superior results, and a good place to start is with the manufacturer's recommendations. These formulas and tips provide useful guidelines.