Sandvik Coromant’s 5B90 milling cutter is a high-performance tool for finishing aluminum components.
Sandvik Coromant (sandvik.coromant.com) has developed a high-performance milling cutter for finishing aluminum parts including blocks and heads.  The CoroMill 5B90 features an innovative cutting tool insert arrangement: “Each insert is placed in a different diameter and height so they are progressively staggered,†says Troy Stashi, Sandvik milling product specialist. “We can control the stock removal in two different directions.â€
According to Sandvik, the cutter can contribute to a cost-per-part reduction of up to 30% and because of the way inserts are readily adjusted, a setup time reduction on the order of 66%.
An example of performance: a 6-in. diameter CoroMill 5B90 cutter with nine inserts was used to machine heads for a four-cylinder engine made from AlSi9Cu-1. Â The cutting depth was 0.028 in., the speed 7,000 rpm, and the feed 492 ipm. Â The tool life: 40,000 parts.
