5″ x 6″ Insert Surfacing Head — 6-Wing, Straight Bore

The IN657 combines a 5 in. diameter, a 6 in. cutting length, and six wings for smooth, high-feed surfacing of wider solid stock on mid-size moulders and planers. Its aircraft-aluminum body reduces weight, noise, and horsepower draw. The six wings carry four-sided solid carbide inserts in a staggered spiral pattern that shears the grain across the full width for a line-free finish on most machines, with 30 effective cutting teeth; the added edges over the four-wing IN654 let each tooth take a lighter bite, favoring finish and feed rate over raw stock removal. Inserts index to fresh edges or replace on or off the machine — no grinding, no knives sent out. A constant cutting diameter keeps setup minimal as inserts are rotated, and reduced cutting pressure supports faster feeds. Specify bore size when ordering.